Analog sound signal no digital sound

I have a A660-BT2G25 laptop which includes DOLBY® Advanced Audio. I connected it via an HDMI cable to the back of my Denon receiver and set the receiver to receive either digital sound input or analog sound input from the laptop that I am currently using as part of my entertainment center. All items in my device manager are operating properly (the system shows NVIDIA High Definition Audio under sound four identical times with all divers identical in each, all with normal operation & no conflicts-not sure if this is normal). The computer recognizes the Receiver as an Denon AVAMP-3 in the sound setup in Control Panel. Further, I have set it as the default and run test after test. The properties there indicate the device is operating normally and shows DTS, Dolby Digital and Dolby Digital Plus. w/HDCP supported, up to 192 sampling rate, 16 & 24 bit. Here is the rub. My receiver is only receiving analog signals under PCM (analog signal) and not DTS (digital) so while the sound is good and clear per my receiver upgrading the signal, there is no digital splitting of the signal to the 5.1 channels. If I force the receiver to take only DTS signals over the HDMI cable there is no sound at all. There is nothing wrong with the receiver. Anybody have any suggestions???

Hi, I just purchased a Mac Pro and am running 10.5.2. I am seeing the exact same behaviour when using the optical digital out from the Mac Pro to a Teac Receiver. It takes about 5 seconds for the audio to start playing from a "silence". If there is continuous playback there are no problems, but if there is ever a significant pause in the audio the receiver shows "unlock" on the display and stops playing out audio.
It certainly does seem like the digital stream is getting interrupted which then causes an issue with the receiver.
I haven't been able to find a solution yet.

Similar Messages

Convert a rpm waveform to digital/analog tach signal. Sound & Vibration

Hello,
my question is: How to convert a rpm waveform to
digital/analog tach signal for use with SV application?
Or is it possible to modify the SV - VIs for the use of
a rpm waveform or a speed signal?
Thanks a lot for coming answers.
Thomas Nuding

Typically an RPM waveform is the analog view of a tachometer, such as a proximity probe over a key or keyway, or an index pulse from an electric motor. In most rotor dynamics applications, the phase of the tachometer waveform is compared to the phase of other waveforms, such as vibration, to determine the angular position of the shaft when the other waveform occurs.
The sound and vibration tools have a function for calculating RPM from an analog tachometer waveform. The order analysis toolset go further to add a counter as an tachometer input. The OAT tools also allow for selection of rising edge or falling edge and voltage level for the "trigger". A time instance is recorded when the edge occurs. This time instance is used for phase measurements and for resampling the other waveforms into the angular domain, ie. 360 measurements per revolution.
Preston Johnson
Principal Sales Engineer
Condition Monitoring Systems
Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
National Instruments
[email protected]
www.ni.com/mcm
www.ni.com/soundandvibration
www.ni.com/biganalogdata
512-683-5444

Analog Signal to Digital a Primer

Many users have analog material sitting around, and they would like to get it into digital form, so that it can be edited. As this material is below SD (Standard Definition) quality, I will address the methods for digitizing it, so that it can be best edited in a DV Project. The output can be a DVD-Video, or other format, depending on what one wishes.
The process of getting this analog material into a digital form, is referred to as Capturing, and it is digitizing the analog material and writing it to a file, that can be edited.
One will need some method of getting the analog signals into digital form, and for connecting the analog output from their analog playback device to the computer. Though the analog signal could come from all sorts of devices, I’ll use a VHS tape deck in this example.
Since a VHS tape deck does not have an A-D (Analog to Digital) processor, and also does not have a a digital signal Out, one needs something in between it, and the computer. That “something” serves two needs: mechanical connection of cables and the ability to convert the analog to digital for use in an NLE (Non Linear Editor). That “something” can be a digital video camera with pass-through capabilities, a device, called a “bridge,” or a capture card inserted into a bus slot in the computer. All three have pluses and minuses.
The first two methods rely on one having a FireWire connection on the computer and will use the Capture module in the NLE software.
The digital video camera route is good, as one already owns it. Having one with pass-through capabilities is getting more difficult. The camera also has to have FireWire (FW, IEEE-1394a, or iLink) output, and the computer must have a matching connection.
An A-D bridge will do the same thing: allow one to connect the analog cables to one end/side, process the analog signals to digital and then output via FW to the computer. There are various such bridges available and two of the most often recommended makes/models are: the ADS-Pryo, and theCanopus/Grass Valley ADVC-110. Products, like the Dazzle lineup, just do not seem to work, or work well. I would avoid such.
A dedicated capture card performs the same task, with one exception. The card will mount into an empty PCI slot on the MoBo, and have inputs for the analog cables. The card will have chips on it, to digitize the analog signals and feed these to the computer via the PCI slot. These do not connect via FW, but have one drawback: they must, in virtually every instance, use additional software to do the actual Capture, as most NLE’s cannot directly see and work with them. Some of the included software Capture programs are better, than others. One common issue with many of these cards is a loss of sync, between the Audio and the Video. This is usually static OOS (Out Of Sync), in that it is usually off by a fixed number of frames, and does not drift over time. This can be fixed in the NLE, but is extra work. This ARTICLE will give you tips on correcting OOS.
Now, we are ready to begin the Capture, as our equipment and cables are all ready to go. We have a big decision in front of us - what format/CODEC do we use to Capture our digital files? Since we are doing an SD Project with non-HD (High Def) material, there is one fine choice: DV-AVI Type II w/ 48KHz 16-bit PCM/WAV Audio, using the DV/DVC CODEC. These files will be approximately 13GB / hour of Duration. Storage will need to be considered. These files are also I-frame, meaning that each “Frame” is rendered and available, so that frame-accurate editing is possible. The NLE will not need to do any processing, or conversion of these files, as even the Audio is ready for DVD-Video. Note: there will still be Conforming and the generation of PEK (Waveform Display) files, but the NLE will be able to do this quickly and efficiently.
Using AVI Uncompressed will get you nothing that you can see, other than larger files. Do NOT use any compressed format/CODEC, like MPEG-2, WMV, MOV, etc., as these will loose data from an already inferior source, and will then need conversion to be used, either with a stand-alone conversion program, or internally by the NLE. You loose quality and then have more work to be done. Do not let the temptation of smaller files lure you into using anything but DV-AVI Type II, and just accommodate the larger file sizes.
With the file format/CODEC decision made, the cables and devices hooked up, we’re ready to start the Capture. The exact operation will depend on what our equipment choice has been. See above for talk about additional Capture software, if one uses a capture card. Otherwise, we should be able to use the Capture module of our NLE. The first issue is that we will NOT have Device Control, as we would with a Capture from a miniDV tape-based digital camera, where we can control the mechanical aspects of the camera, during this process. As our VHS deck is hooked up to the A-D bridge, or digital camera w/ pass-through, via analog cables, our control signals cannot be sent to it. One would cue up the tape in the VHS deck, and then choose Record/Capture in the NLE’s Capture module, starting the Capture. Instantly, they would hit Play on the VHS deck, or via that deck’s remote control. This is easier the second time that one does it. I sit with the mouse in my right hand, poised over the Record/Capture button, and the VHS deck’s remote in my left hand, finger hovering over Play. It’s then a 1 - 2 push, and all starts. One can stop the Capture, if an unwanted section of tape comes up. The Capture module of the NLE will direct us on how to proceed from there, should more Captures be wanted. Some will just start up at a later point, and write an additional file for that portion of the tape, but some might require that one basically sets up a new Capture session One should investigate just what their NLE will require for doing multiple Capture sessions from one VHS tape.
When done, one closes the Capture module, and then navigates to the location that these DV-AVI Type II files have been stored in, and Imports them into the Project. This differs slightly from doing the Capture from a miniDV tape camera, as those Captured files are already in the Project.
Edit away, and Export/Share to the necessary output settings, file type and CODEC.
What about those VHS - DVD decks, the ones that will burn a DVD directly from the VHS tape? They seem so simple to use, and for the most part are. However, those DVD-Video discs, contain pretty heavily-compressed MPEG-2 AV streams. These MPEG-2's, besides being compressed, are in aGOP structure and are muxed (Multiplexed into one file with both a Video & Audio stream), plus there is often some Menus and navigation in the first VOB, the main container components of a DVD-Video. Many NLE’s can Import the VOB’s, and basically rip the MPEG-2 out of them, but that first VOB can be highly problematic, due to the way that most of those decks do the Menus and navigation. It is seldom 100% DVD-compliant by the DVD-specs. This can be a major problem. This ARTICLE will give you some background and tips on DVD VOB's.
Those dual-decks are good for doing one thing, regarding the DVD’s that they produce - provide one with an archival DVD-Video of the VHS tape, and not to be edited. However, the VHS side of these works well with an A-D bridge, just like a pure VHS deck does. I would strongly recommend that one does NOT use the DVD-Video portion of these, if editing will be desired. They cause many more problems, than they solve - just use them for an “archive” copy of the tape to a DVD-Video, for playback on a computer via DVD software or a set-top player, hooked to a TV.
What about film? Well, film is obviously analog, and one needs to digitize this to edit on the computer. The process of this digitizing is referred to as telecineing the film. While one can buy equipment to do this, it is expensive, and involves a lot of setup and testing to get the job done. There are many service bureaus, that offer telecining. Some are better than others. The main considerations are: care in handling of fragile film, how the telecining is done, i.e. frame by frame w/ a liquid gate, or just by straight projection, and then output format for the digitized files. Some of these services will offer a DVD-Video disc. Do not be tempted to do this. See above. Others will offer to write these digitized files to a miniDV tape, and this is just fine. One does then need a miniDV camera, or miniDV tape deck, to then do the Capture from, but the quality and editability will be preserved. The final delivery format would be to put these DV-AVI Type II files onto an external HDD. This saves one from having to do the Capture from miniDV tape, having to have a miniDV camera, or miniDV deck, and only Importing of those files would be required to get them into the Project. Many of these service bureaus will either sell you the external, or use one provided to them. Check out specifications for things like format of the external. FAT-32 will limit the file sizes to ~ 4GB max, and NTSF will have no such limitations. However, if the service bureau is on Mac, and you’re on the PC, their Mac’s can ONLY see FAT-32 HDD’s. Talk this over with the service bureau first, so that there are no surprises later on.
Hope that this helps,
Hunt
PS - also see this FAQ Entry for more detail.

the_wine_snob wrote:
Products, like the Dazzle lineup, just do not seem to work, or work well. I would avoid such.
Although I now have a Canopus ADVC300 I previously used a Magix 'Movies on DVD' USB device. I found the results from this to be particularly good and, to my ageing eyes, I see very little quality difference.
I think this is because Magix use their proprietary high quality codec (from their Pro products) to capture the footage. Like DV-AVI it runs around 10GB+ per hour. This can then, very simply, be exported to DV-AVI Type 2 for use in PRE. Note that there are some sound synchronisation issues with the 'out of the box' settings - but the fix is quick and I posted details to the Magix forum.
Would I revert if I could return my ADVC300 bridge? Probably not - the firewire connection and the PC seeing the box as a camcorder adds to ease of use. In fact I am pleased to have both. There are some things Magix does better than PRE7 (batch exporting each scene as an individual DV-AVI file being just one) and it has smart-rendering which is handy for quick clip splitting/exporting.
Cheers,
Neale
Insanity is hereditary, you get it from your children

Analog sound out of SPDIF

Analog sound out of SPDIF' I have connected a digital coax cable from the digital out to a Harman Kardon stereo receiver. The cable has been run to another room in order to watch downloaded shows/movies in my living room.
I receive DTS and DD sound just fine using this connection however PC sounds/MP3s and other analog sounds do not work. Is there a way to get this to work without having to add cables? Being forced to manually switch the output signal on the computer and on the stereo receiver is not a very good option.
If this is not supported are there any other sound cards that do support this? I can't imagine I am the first person to want to be able to watch DTS movies and listen to MP3s on a stereo receiver without having to swtich inputs/use a different set of cables.

? I just wanted to what I have experienced based on my digital spdif connection:
After looking at the support site for stereo receivers, I see the following statement:
"If you are going to connect from the Digital Out on your Sound Blaster to the Digital Input on your receiver, you will only receive multi channel audio when your are playing DVD games, or DVD movies, or standalone AC3 files. You will only hear stereo (front left and right channels) when playing MP3, MID, AVI, WAC, or WMA et."
This statement is confusing bc the last sentence leads me to believe that I will hear MP3, and WMA audio from the digital out but it will only be in stereo sound, not surround sound. That is fine with me, I simply want to be able to hear sound from a single cable.
Can someone clear that statement up from the support site? Will any MP3, AVI, or WMA? sound play on a stereo using the digital coax input?

5.1 analog sound for games with dtt2500

Hello,
For the sound on my PC, I have the material following, illustrated by the images below: an audio sound card Crative X-Fi extreme PCI express OEM connected with my decoder Crative Desktop Home Theatre 5.1 (which manages digital Dolby but not DTS) itself connected with my 5 HP and my subwoofer.
For the sound of a DVD, no concerns, thanks to an adapter, I can connect the optical grip of my sound card with the grip AC3 SPDIF of my decoder and obtain a digital sound dolby in 5.1.
On the other hand, for the resulting sound of video games, I do not know one single which take advantage of 5.1 digital but only 5.1 analog. I know thus how to connect my sound card via the black links (rear) and green (front) in my decoder to obtain an ANALOGICAL sound in 4.1. But impossible to obtain a sound in 5.1. I do not know how to connect my exit center/subwoofer via an orange-coloured cable in my decoder, which does not possess this entrance.
As a result, not possible to obtain from the analogical sound 5.1 for the games. I thus thought of this solution, the decoder DTS-610 from Creative http://us.creative.com/products/product.asp?product=49
It decodes the signal resulting from three cables (orange, black and green) or 6 "ways" to convert it in DTS on the HP. I thus connect it between my sound card and my decoder via 3 analogical cables and a yellow optical coaxial cable. BUT, as my decoder does not manage the DTS, will it still work ? Could I thus obtain an ANALOGICAL sound 5.1 coming from games instead of the sound 4.1 Or is there another solution?
Thank you for your help
DTT 2500 : http://images.google.ie/imgres?imgurl=http://alive.singnet.com.sg/features/dtt2500/dtt2500-logo.gif&imgrefurl=http://ali've.singnet.com.sg/features/dtt2500/&usg=__BZhNYMDU5LTI59e_JQzadorEhCI=&h=46&w=328&sz= 8&hl=en&start=&um=&tbnid=6k6Tn9SPJlOKDM:&tbnh=53&t bnw=8&prev=/images%3Fq%3DDesktop%2BHome%2BTheatre%2B5.%2BDTT25 00%2Bconnections%26um%3D%26hl%3Den
2) PCI Express Card : http://support.creative.com/kb/showarticle.aspx?url=http://ask.creative.com/SRVS/CGI-BIN/WEBCGI.EXE?New,Kb=ww_english_add,Company={D0F9C6-3B20-4E69-BC69-7F7087373D},t=prod_tree,varset=ws:http://us.creative.com
Message Edited by didierh on 02-10-2009 06:28 AM

hi davebeme,
Welcome to Lenovo Community Forums!
That Logitech x530 is meant for a Desktop Audio that support Surround 5.1 channel that has 3 ports as you mentioned (Blue, green and orange)
You will need a USB Audio Adapter like this
http://www.usbgear.com/USBG-SOUNDX.html
Like the Diagram, the Surround 5.1 sound effect is your Logitech device
Hope this helps
Cheers!
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How Can I Get An Analog Sound From Logic's Plug-In's?

Hi all,
I'm working on an 80's New Wave influenced project, for which Logic has many plug-in's -- unfortunately most all of them have a distinctly digital clean sound to them.
What are some ways (filters, compressors, etc?) that I can alter some of these sounds to sound more like they did on 80's analog recordings?

Well, 80's New Wave music was known for lots of things, but clean analog sound wasn't necessarily one of'em in my opinion.
The 80's was the first "digital decade", and as all the new toys showed up musicians everywhere went wild using and abusing them. Hence the 80's proliferation of digital reverb, gated drums, drum machines, buzzy synths and grainy samples.
I'd say that sound would be best approximated with Logic's Silver or Platinum verb, or Space Designer with some old Lexicon patches... And maybe the 'bit reduction distortion' plug, whatever it's called (in the distortion directory).
Are we talking Elvis Costello, Joe Jackson "New Wave", or Duran Duran, Thomas Dolby, Human League kinda new wave? There were lots of variations... But again, the over-use of digital effects and synthetic elements is what generally what makes the 80's sound like the 80's.
(at least, that's the way I remember it.... I'm still mad at the guy who convinced me to sell my Jupiter 8 coz that "buzzy" sound was dead now that DX7's had the 'clean digital sound of the future'. !!!)

Analog sound

i make music on my macbook but i want that analog sound,i dont like the digital sound its too clean and predictable,what kind of output gear should i get to bring me back the analog feel in my recordings,does logic pro have plug ins that are worth a try

The first thing I would say is that ALL Logic plug-ins are worth a try to see what they do. There is a very rich and diverse world awaiting you.
Second, you must get a decent audio interface. The built in audio in and out was never designed for high end music production... otherwise we would all be paying a lot more for our macs. I use the RME fireface at work, and like it a lot. On my Macbok Pro at home, I use the Focusrite Saffire LE, and I like that a lot as well, especially because it comes bundled with some very useable plugs.
Then there are any number of 3rd party plugins you could try. Great bang for buck, simple plugins can be found at airwindows.com. Many there are free to whet your appetite. They have no fancy graphic interface or metering, but they sound really good and are quite unique. A plug called "iron oxide" will give an analogue warmth that you will like, and there are others as well.
If you're really serious, though, you would get an external card made by Universal Audio, called the UAD2. The plugs that are available for that are a class above.
Happy hunting.
And BTW, get great monitors or phones, because the sound you are currently making might actually sound better than you think.

How to convert a analog signal to digital signal

Hello,
How to convert an analog signal into digital signal such that every sample of analog signal corresponding to 1.2V will be represented as '1' in digital signal and other samples of analog signal(that are not 1.2v) will be represented(converted) as '0' in digital signal.
And how to display both wavefroms or signals in graph indicators.
Thanks.
Solved!
Go to Solution.

If you have 1000 samples, and you want to convert to digital, you are going to get 1000 digital values. Attached is what I mean.
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.
Attachments:
Analog_to_Digital Hooovahh Edit.vi ‏52 KB

Converting analog signals into digital signals

I have been transferring analog video cassettes to iMovie for further editing by using a digital camcorder (Canon MV960) between the 8mm video camcorder (analog camcorder) and iMac. I have always done this without any cassette in the digital camcorder, i.e. I have been using the digital camcorder as an analog/digital converter only.
I recently acquired iMovie HD 6 but this most recent version of iMovie refuses to import any signal from the analog camcorder via the digital camcorder. The window in iMovie is empty with an error message saying that "no tape". Well, it's true, there is no tape, there never was any tape when I used the previous version of iMovie!
Does this mean that I have to convert the analog video tape into digital video tape and, once recorded in digital format, the digital tape can be imported in iMovie HD 6?
All cable connections are OK:
- the analog film could be seen in the screen of the digital camcorder:
- digital video tape could be imported to iMovie HD 6.

Hi 5480:
try running a permissions repair (which should actually be done before and after upgrading software). You will find it in applications / utility / disk utility.
Also, this is a copy of how Matti Haveri (iMovie Guru) sets up analoge to DV:
My Analog to DV passthrough settings memo:
1. Take the tape out of the camcorder
2. Connect the analog device's audio and video to the camcorder's minijack, use the S-Video jack for video if the output device supports S-Video
3. Put the camcorder into VTR-mode
4. Select A/V->DV out: ON, in VTR mode's menu choices
5. Disable the info display on the the camcorder by toggling its DISPLAY button
6. Put iMovie (or other DV application) to the Camera Mode
The analog image should now appear on the camcorder's screen as well as on the iMovie's screen.
Note that if you have a tape in the camcorder, you have to put the camcorder's VTR into REC mode (you may pause the tape) but this is not advisable because it produces wear to the tape.
* Note that the SCART which comes with the European nEUtered TRV320E camcorder is Out-only.
Sue

Directly convert the analog signals into digital without passing through FPGA

To whom it may concern,
I am using a SCB-68 board R-series and I have a couple of technical questions:
In my system at the moment 8 analog channels are connected to the 8 input analog ports and then data are sent to a FPGA (PXI system 7852R). I am planning now to add other 4 channels to the system. Since over the total 12 channels I just need a very fast acquisition mode (using the FPGA) for 6 of them, while the other 6 can be sampled in a ms scale, I was wondering if you can suggest me something that I can use to directly convert the analog signals into digital and in this way used many unused digital signals provided with this model.
Thanks in advance.

yes it is correct, what do you need is:
software + (pc) + PXI + cable + chassis + C-series module
With embedded controllers, there’s no need for an external PC
With PXI remote control kits, you can control PXI systems directly from desktops, laptops, or server computers.
What Is PXI?
To configure a complete PXI System please go to: Build Your PXI System

Read analog trigger signal gated by digital pause trigger

Hi!
I want to use and analog trigger together with digital pause trigger. At the same time i want to see on the scope the analog trigger signal which was gated by gate signal. Is it possible? Can i somehow wire the gated trigger to one of the outputs of the board?
Thanks in advance.

Hi Sergei_phys,
Thank you for the forum post!
I have a few questions about your post:
What hardware are you using? Is it NI or 3rd party? You mention using a scope, is that a NI piece of hardware/module?
In theory you can have a analog trigger to start the acquisition and a digital trigger to pause , but it depends of the hardware.
Thanks,
DanC12

Switching of analog measurment signals

Hello,
in our LabView applications we have to measure several voltages and
currents. We use a AT MIO 16 E 10 DAQ card, but it is not good enough
for 2 voltages 2 currents. Therefore, we use exernal GPIB measuring
instruments for them (Keithley 2000 a.a.).
However, I think we could come along with only one Keithley 2000 since
the timing is no issue (1 scan per sec is enough). I need some switch
controlled by LabView that switches the analog measuring signals to
two Keithley 2000 (analog) inputs (one for voltage, the other for
current measurement, respectively).
I found out that I can't do this with the DAQ card alone. I can't use
the analog outputs since I don't want a A/D - D/A conversion included.
Note that the measuring volta
ges can be ~100 mV.
But I could be wrong since I am actually a software guy so please
correct me if this is possible with the DAQ card only.
My idea is as follows:
I could use the digital outputs of the DAQ card and connect them to
some opto coupler or relais with TTL input. The opto couplers or
relais would switch the analog measuring signals according to the
digital outputs of the DAQ card and finally according to LabView.
I couldn't find such a switcher board in the NI catalog. They have
switchers, but they seem to switch voltages >3V only. But maybe
someone suggests a board from another company which suits better.
I just wouldn't like so much soldering my own board since my knowlege
of opto couplers, relais and hardware in general is really limited.
Best regards
Johannes

Hi Marcus,
thanks for your answer.
I was probably not clear about what I want. The solutions you suggest
seem to be far to complex. As Nirmal pointed out, I actually only need
high quality optocouplers, no more.
On Thu, 25 Mar 2004 09:30:26 -0600 (CST), Marcus G wrote:
>Hello Johannes,
>It sounds like you're setting up a system that requires four analog
>inputs (two voltage and two current), and you would like to use an
>analog trigger to switch between which signals are measured.
No. I just want to use the digital outputs of the DAQ card to switch
optocouplers. The optocouplers will switch between several analog
measuring signals. They should route these signals to one analog input
of a Keithley 2000.
>There are
>several options of
how you can set up such a system.
>In terms of measuring the four analog inputs, you should be able to do
>this with a DAQ card alone. Many of our cards, including the
>AT-MIO-16E-10 (also called a 6020E), have 16 analog input channels
>that have an input range of +/-10V.
I don't want to measure the four analog inputs with the DAQ card since
it isn't precise enough. The input range is too high for some of the
analog inputs and the resolution is too low. Also, I can't modify the
input range of the DAQ card at runtime. Therfore, we are using
external instruments (Keithley 2000 a.a.) for the measurements. My
idea was to only use one instrument for the four analog input signals.
Then I must provide the switching between the four analog inputs. The
idea was to control (switch) some optocouplers with the digital
outputs of the DAQ card. The optocouplers should route one of the four
analog signals to one Keithley 2000. I set the digital outputs of the
DAQ card in the LabView program. Also, t
he LabView program configures
the Keithley 2000 and reads the measuring values from the GPIB. That's
all.
Regards
Johannes

Imported 1hr of analog video (converted to digital). It requires 3 dvd's!

I imported 1 analog tape (1 hour) using a Sony camcorder to convert the signal to digital. When it was done, it took almost 25GB of HD space and I knew that it wasn't going to fit on 1 DVD. Sure enough, when I went to save it to DVD, it said there wasn't enough space. I had to delete 2/3rd's of the files in order to get it to fit.
So, my question is this: Is there a way to compress the digital video when your downloading it to your HD? I used iMovie but didn't look to see if there are any settings for compression. (I have iMovie 3)
Thanks to all who answer.
- Mark

Analog tapes are typically two hours and digital tapes one hour. So if you imported a full single analog tape, it was more likely a two hour tape. Since DV formatted video takes up about 12-13GB per hour, your report of your project taking up 25GB sounds about right for a two-hour tape. So are you sure it was one-hour?
iDVD version 4 (what version do you use) has two settings in the preferences. One is for Best Performance and the other is for Best Quality. Best Performance limits your iDVD project to 60 minutes or less. Best Quality lets you create projects up to 120 minutes in length. Best Performance (up to 60 minutes) is the default setting of iDVD.
So if you really have a two hour project and iDVD is set to Best Performance, it makes sense you would have to delete a lot of your project to make it fit. If you change the setting to Best Quality you likely can fit everything on there although you still may need to trim down you movie just a bit. "Two Hours" is the nominal length of the tape but in reality it might really come it at, say 124 minutes or something like that. In addition, menus, audio added to menus, etc. all eat up a little of the available time for your project. So a 120 minute movie won't fit if your menu includes a 2 minute song or something like that. The most time you can have with iDVD4 with all the menus is 15 minutes, so if your imported movie was 1 hour and 45 minutes, it would fit for sure. Longer will fit if you don't use the full 15 minutes of menu space or add other extras like iDVD slide shows and such.
Patrick
eMac, 1.25GHz, Superdrive Mac OS X (10.3.9) 1G RAM, 250GB FW Drive, Epson 740 Printer

Does Mini Displayport to DVI adapter support analog VGA signal?

I'm just about to buy a macbook pro. Since the MDP (mini displayport) to DVI and MDP to VGA adapters are £20 a pop, I can only afford to get one. Obviously DVI is better in general, but VGA supports more older hardware, CRTs, and the spare VGA input on one of my displays (where the desktop uses the DVI).
What I'd like to know is does the MDP to DVI adapter also support the analog VGA signal on certain pins (like most physical desktop DVI ports do)? If it does, since I have about 3 or 4 DVI to VGA adapters lying around, I can get the MDP to DVI adapter and use the DVI to VGA adapters with it if necessary, but if it doesn't I might be better off getting the MDP to VGA...

No. Unlike DVI, which in the DVI-I configuration has both digital and analog pinouts, DisplayPort (and mini-DisplayPort) are purely digital. Mini-DP to DVI then DVI to VGA will not work. If you look carefully at the Apple Mini-DisplayPort to DVI adapter, you'll notice it's a DVI-D connector - digital pins only.
The Apple mini-DisplayPort to VGA adapter contains a digital-to-analog converter.
So, you'll have to choose. If you want VGA, get Apple's mini-DisplayPort to VGA adapter.

How to get analog Tacho signal in PCI 6250 NI card

Dear All,
Iam using Labview 8.6.1 and NI PCI 6250 card. In my application i need to get order power spectrum for particular speed and accelerometer signal. For that iam using labview example program Order power spectrum(Analog Tacho).VI. In my PCI6250 card i configured AI0 as Accelerometer signal and AI 1 as speed signal for analog tacho signal. In that example program i can get Amplitude of Acclerometer signal But i cant able to get Speed Profile. For Speed iam using encoder, from that encoder Digital pulse i connected to analog channel 1. Whether this connection is correct? Instead of giving digital pulse directly i tried analog signal based on 0-10v for 0-1500rpm. This configuration also is not working. Encoder PPR is 1000. Can any one help me to solve my problem.
Regards,
Vijay.
Solved!
Go to Solution.

At 1800 RPM you are rotating at 30Hz. for your encoder pulses are coming at 30,000 Hz. You need to sample the analog encoder channel at 100,000 Samples per second or more. Graph your analog inputs on a time waveform graph to see if you are getting a clean signal.
With the analog tacho vi, you need to provide the number of pulses per revolution, so it can determine the correct speed.
Preston Johnson
Principal Sales Engineer
Condition Monitoring Systems
Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
National Instruments
[email protected]
www.ni.com/mcm
www.ni.com/soundandvibration
www.ni.com/biganalogdata
512-683-5444

Analog sound signal no digital sound

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