Digital Audio Center record

I upgraded to WIN2000 recently and I can not get the Digital Audio Center to record anymore.
It worked fine under WIN98. I did the reinstall everything else works fine. Does anyone have any advice?
The CTREC works fine but that does not do MP3 format.
Message Edited by mysbli've on 04-26-2006 08:09 PM

Since you are only looking at one line, and you are looping frequently (10/second), set your DAQ acquisition to a singe boolean 1 sample.
Feed that value into a shift register. If the new value is not equal to the old, then execute the true case where you have the write to measurement file VI.
See attached.
Message Edited by Ravens Fan on 06-11-2007 11:40 PM
Attachments:
digital read.PNG ‏33 KB

Similar Messages

Recording Digital Audio via Optical Line-in

Hi,
I've been trying for the past hour to record Digital Audio from my XBOX 360 via an Optical Cable, into my MacPro's Optical line-in.
However all I get it huge amounts of noise / static / clicking all of the time.
Any ideas?
Thanks,

I suspect the audio from your XBOX is encoded in surround sound. The Mac will not decode this type of audio directly from the optical in port. You may need to try and change your XBOX preferences to standard stereo.

Lapel Microphone with a Digital Audio Recorder?

I am looking for a device that would look a lot like the microphone and transmitter portion of a wireless microphone system.
Instead of the transmitter unit there would be a smaller digital recorder.
For wedding videography I put a traditional wireless lapel microphone on the groom and connect the receiver to my camcorder.
Sometime there is noise and/or cutouts in the audio from this system.
I know it is possible to take a digital audio recorder (DAR) and connect a pre-amped lapel microphone to it but the DAR has a useless microphone on it and the pre-amped lapel microphone is heavy and clumsy.
All this has to be stuffed into the groom's pocket.
It would be great if there were a plain wire lapel microphone and a small recorder unit that you could set to record and let the groom go about unencumbered before the ceremony.
During editing you can sync the groom's audio with the ceremony video if you have remembered get the system back from him.

Do you believe that my AZDEN 35BT system is not up to the task?
I was in the balcony of the church about 100 feet from the groom with a straight line of sight to him.
There were some noise and cutouts in the transmission
I thought it might have to do with the officiant's transmitter in close proximity to the groom.
Maybe I could have adjusted the frequency before the ceremony.
I would have to find the priest, get him to fire up his wireless microphone system, and then holler up test adjustments to someone manning the receiver end.
Rather than using an iPhone how about a less expensive iPod touch?
I found an external microphone for the iPod Touch.
Amazon.com: SIMPLE LAV- MOBILE Omnidirectional Lavalier-Lapel Condenser Samsung Galaxy, Apple iPhone-iPad Mic, Super Qua…

Supplemental digital audio recorder drifts out of sync

Dear All,
I have just purchased a Sony ICD-UX70/UX80 digital audio recorder to use as a back-up emergency audio source and it works very well in capturing stereo digital audio. However, when trying to edit this audio source into my video, the audio keeps "drifting," I assume because of the difference in the frames per second between video and audio. Is there any "quick fix" to keep both audio sources in sync...a "make fit" that will adjust the audio to the space allotted to the video? Any suggestions?
Thanks
Barb

Video runs at 48khz. The unit may record at 44.1khz. If that's the case, you need to resample the audio to match the sequence settings.
Resampling can be done in QT Pro, iTunes, Soundtrack Pro, Peak or any number of audio editing programs.
Good luck,
x

Recording 48Khz digital audio

I'm having trouble transferring audio from DAT at 48kHz to my new Mac Pro. The Apple audio input changes back to 44.1kHz regardless of what I set it to. I've tried three different software options (Amadeus Pro - my usual tool, and also Sound Studio and Audacity)
I used to use my MacBook Pro to do the same task, but I've since sold it. I tried a new Aluminium MacBook as well with the same effect. Is this a bug that's crept in in recent Apple software or hardware, or is it just me?
I checked the digital audio output from my DAT deck (which I'm converting from Coax to Optical) via my Denon AV Amp and also via my Minidisc recorder and they both play it back fine.
Very Frustrating...

Hi,
i've tried to find the apple support document without success. Essentially I had a problem with sample rates and the new MacPro, though in play back rather than recording. Returned one machine and got another. Better, but essentially limited to 44 and 48, possibly 96, definitely not 88. The support document I can't find now said something to the effect that in some MacPro's the sample recording rate was limited. I don't know if it's hardware, hope that it's software and will be fixed. With a new machine you could try contacting apple support, but this is a fairly specialized problem, on the other hand, MacPro users usually have a specialized task, and require a machine that will perform it.
Please post back if you get an answer or a solution,
Good luck,
Ray

Digital audio recording

Hi,
I will be doing some audio-only interviews which I will need backed-up and then transcribed. I won't be using this audio for an actual video piece, but don't want lousy sound. Does anybody have any suggesions about what type of recording device I should use? I heard that Mini-Disk recorders have the best sound, but I don't know how to get the files onto my computer. And wouldn't I need to buy MANY disks which would add up $-wise? What about MP3 recorders? How's the sound? Do any interface with Macs? And how would I break up any LONG tracks (over 80 minutes) to move onto CDs?
Thanks for your advice!
Eve

Last summer I did a bunch of "man-on-the-street" interviews for a documentary I was shooting. I borrowed an hhb minidisc recorder and plugged a very high-quality Sennheiser broadcast hand-held mic into it.
The whole thing was about the size of a standard-size hardcover book. Only weighed a couple of pounds, too.
I was stunned at the excellent quality of the results. This rig plugged right into the Firewire port on my Mac, and I just dragged the audio files over via Finder copy on to my working hard drive.
The audio files opened right up in my audio editor app. i was able to up-rez them, EQ and tweak them, and then bring them right into FCP. It was very straight forward.
For some of the interviews that were done with video as well as audio, I recorded the audio on the minidisc and wild sound on the camcorder. For sync we just used the time-honored method of shooting a clapboard slate at the from of each segment. Worked great!
I guess this is what radio news guys are using these days for location recording.
However, I agree with the previous poster who emphasized that using a good mic, and putting it in the correct position relative to the subject, is probably 70% of the solution. Regardless of what medium you use to record the audio. Proper technique is always almost everything.
Good luck.

[Solved] Difficulty getting digital audio to play in all applications

This is probably a noobish question...
My motherboard supports digital audio out via S/PDIF cable (optical), as well as standard analog audio. I have a stereo receiver that I've plugged my optical cable into.
When I go to systemsettings > Multimedia > Phonon > Audio Playback, I put the "HDA Intel S/PDIF Digital" device on top and clicked Test. I could hear the test tone (playback source is PCM).
However, if I go to play an MP3 or whatever, I have to go into the settings for each application and tell it to use that particular device. Some applications (such as Firefox) do not have obvious settings for audio playback. Is there a way to solve the problem once and for all (tell the audio system "send everything through the digital device all the time")?
(I read the relevant section of the wiki, but it is focused on getting sound out of your digital device, not making it the default.)
Any other advice or gotchas about using digital audio would also be appreciated.
Thanks!
Last edited by nathanb (2012-01-25 20:58:42)

Bah, I did a system update and rebooted and now digital out doesn't work at all!
[nathanb@nathanb-box ~] aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
front:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
Front speakers
surround40:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
HDA Intel, AD198x Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Intel,DEV=0
HDA Intel, AD198x Digital
IEC958 (S/PDIF) Digital Audio Output
Devices don't seem to have changed...
[root@nathanb-box nathanb]# amixer | grep IEC -A 8
Simple mixer control 'IEC958',0
Capabilities: pvolume cvolume pswitch pswitch-joined cswitch cswitch-joined penum
Playback channels: Front Left - Front Right
Capture channels: Front Left - Front Right
Limits: Playback 0 - 39 Capture 0 - 31
Front Left: Playback 39 [100%] [0.00dB] [on] Capture 31 [100%] [12.00dB] [on]
Front Right: Playback 39 [100%] [0.00dB] [on] Capture 31 [100%] [12.00dB] [on]
Simple mixer control 'IEC958 Default PCM',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'IEC958 Playback Source',0
Capabilities: enum
Items: 'PCM' 'ADC1' 'ADC2' 'ADC3'
Item0: 'PCM'
Channels still seem to be there...
My .asoundrc looks the same as above. But just for fun, I also tried removing it and restarting alsa, with no change.
I'm testing output by going to systemsettings > Multimedia > Phonon and clicking the Test button with "HDA Intel (AD198x Digital)" selected. Nothing comes out through SPDIF, though it does play through analog (I have two separate pairs of headphones plugged in, one to the analog jack and one to a headphone amp plugged through the digital port) so I can tell which port the audio is coming from).
I've checked the hardware volume, and it appears to be in order. The amp is not reporting any audio signal on the optical port. I tried switching out the cable just to be paranoid, and still nothing. I believe this is a software problem.
Any ideas?

Won't Change Back to Regular Audio After Setting "Encoded Digital Audio"

I have a first generation Mac Pro, and I've just recently upgraded to Lion. I used to play a fair bit of DVDs on the computer, but recently I've slacked off doing that. Today I popped in a DVD to play and then opened DVD Player up. Everything worked fine as it was supposed to. I've got the DVD player set to send digital audio out so I can get surround sound through my receiver. When I quit DVD player I don't get sound anymore through the optical out unless it's encoded digital audio. I've had that problem before, and to solve it I'd go to Audio Midi Setup and change the format to what it was prior to being set to "Encoded Digital Audio" by DVD Player. However, now with the upgrade to Lion it will not switch back. The option to do it is there, and I can click on 16, 20, or 24bit audio all day long and I won't get audio output from that port unless I restart the computer.
This is obviously a system bug that needs to be reported to Apple if they aren't aware of it already, but what I'm wanting to know is how can I avoid restarting to get audio back? Restarting Core Audio doesn't do the trick as I've already tried that.

From the iPod's Main Menu choose Videos -> Settings and make sure TV Out is set to Off.
Otherwise, try a hard reset as well. To do this, press and hold both the Select (Center) and Menu buttons together long enough for the Apple logo to appear.
B-rock

How to use the Digital Audio in & out RCA jacks a6010n

On the lower right of the back of my Pavillion a6010n desktop, above the mouse and keboard connections and below the monitor connection are two RCA jacks labeled Digital Audio in and out. The top one has an orange insulator and is labeled "out", and the lower one has a black insulator and is labeled "in". I have been unable to find any information about these or how to use them. Can anyone please tell me or direct me to information about this? I have Vista Home Premium 32 bit and have added a Sound Blaster Audigy sound card which is cheap but has a better S/N ratio. In Control Panel --> Sound the digital output for the sound card is listed but there is nothing about the Digital Audio jacks I would like to be able to use. Thank you all.

Yes there is. I suggest trolling these boards for the 3rd party remote solutions that will free you to use the remote in ANY application like Winamp, Notepad, Windows Media Player, etc.
Just my two opinionated cents...

Digital audio recorders

Are there any digital audio recorders that are compatible with iTunes for Windows? (No, I don't want to stick an accessory on my iPod.)
iMac G5 Mac OS X (10.4.4)

The one I have records to unprotected WMA files and those drag / drop in fine to iTunes — though I do tend to use the application that came with it to convert them to WAV first and then drag them into iTunes. Most audio recorders should do something similar.
Mine is a Olympus DS-2 Digital Voice Recorder and I've been happy enough with it. If you're looking to do a podcast on the road, it's been good enough for that — though I bought a good mike to go with it.

Losing Digital Audio Ouput from Mini SPDIF

I have a 2010 Mac Mini connected to my HDTV/AV Receiver. I send digital audio to the av receiver with an optical cable. I have sleep disabled for OTA DVR. I have not tried to see if it will wake the mini to record.
I have it working, but often upon using the mini the next day, the device changes away from the Digital Out to the Soundflower 2 channel output device. This virtual output is used by one of the rogueamoeba applications to catch audio streams.
At night the AV receiver is turned off, so the mini may think the digital output has failed and does some sort of failover to the next device.
Any ideas?
Ebola.

Welcome to the Apple Discussions!
You need to start your own discussion concerning your issue. You are committing an infraction, it is called a threadjack. Digital audio from a Mac's audio outport is a very different issue from digital audio over USB.
So return to here; http://discussions.apple.com/forum.jspa?forumID=1317&start=0
Then press *Post New Topic* from the top left of the page, give your topic a title, and explain your issue as clearly and in as much detail as you can. Include everything that you have already tried to resolve the issue before posting here in the ADs.
Good luck!

Looking for forums for Sony digital video camera recorder DCR-TRV 11

I've been thinking hard and decided that I WILL use my Sony digital video camera recorder DCR-TRV 11. (I was being tempted by a smaller Sony that has a 40x optical zoom.
Question: Do you know of where I can find a good forum for this brand and model? I Googled it but would like personal recommendations.
Thank you.
-L

Bengt Wärleby wrote:
Hi
Don't know of any other forum else this (and FinalCut)
Your Camera NEED an FireWire-Cable FW-800 <--> 4-pin or FW-400 <--> 4-pin
I have a FireWire cable.
The supplied USB-Cable will not work with iMovie or FinalCut - Sorry.
Yours Camera also can record Audio as 12-bit or 16-bit Audio.
Please - SET IT TO 16-bit (now) - else severe audio sync problems in iMovie
(FinalCut - might be able to Capture 32kHz audio)
How do I set my Sony digital video camera recorder DCR-TRV 11 to 16-bit?
Also, I do not have or use Final Cut.
Thank you for the warning about 16 bit. I wish you would tell me why it is important to set to 16 bit, though.
Thank you,
-L
Yours Bengt W
Don't know of any other forum else this (and FinalCut)
Your Camera NEED an FireWire-Cable FW-800 <--> 4-pin or FW-400 <--> 4-pin
The supplied USB-Cable will not work with iMovie or FinalCut - Sorry.
Yours Camera also can record Audio as 12-bit or 16-bit Audio.
Please - SET IT TO 16-bit (now) - else severe audio sync problems in iMovie
(FinalCut - might be able to Capture 32kHz audio)

Digital Audio Input Specs

I'm looking for detailed specs or info about the digital audio input (mini 1/8" hybrid input) on the MBP. More specifically, I would like to know if the audio passed through (at up to 24 bit/192kHz) is free at the receiving end (within Logic) from sample rate conversion and work length truncation as well as handled "transparently" (without going through internal level control, dithering or noise shaping of any kind).
In other words, Is the 1/8" spdif audio input "transparent" and suitable for professional audio recording via a high end AD converter?
Thanks to anyone who has some info on the subject.

thanks for the link to that doc, actually had seen it already. it's good but it doesn't really give exactly the information audio pros are looking for.
as for the wordclock via BNC, that is not necessarily true. word clock is also a part of the spdif spec, it can be included in the stream. back in the day, eons ago when I had a DAT recorder and a yamaha 03D digital mixer, I would always make sure that the DAT recorder was the clock master, and the 03D synced to it. there was never any need for a BNC connection, it all went through the spdif itself. sending wordclock through BNC cables is really for when you have many digital devices and you need to chain them together to sync wordclock, it's not necessary for just going between two devices.
but, do you know for a fact that somehow the spdif on the MBP simply leaves out wordclock data? if that's the case, then why does it give you options for choosing which source to use as the clock? if it were only possible via BNC cables, then having that option would be pointless unless there were BNC ports on the MBP, last time I checked there weren't any.
...I guess we really need proper info on this..

Ghastly digital distortion while recording

I ran into a really bad problem tonight when trying to record and could use some sage advice.
I'm getting a lot of digital distortion when recording any audio on any audio track using either of the mic inputs on my Presonus Firebox interface. There's no noticeable distortion when monitoring the recording using hardware monitoring through the Firebox, but it's very noticeable on playback.
I've confirmed that this is not a gain-staging problem (the Firebox clipping indicator does not come on and the levels going into Logic were all well below -6dBFS), it's not a problem specific to a mic or to any mic, and it's not a mic cable problem either: it happens with DI'd guitars, vocals, you name it. It does not happen when recording an audio instrument, nor does it happen when playing back previously recorded tracks, nor does it happen when playing streaming music. I don't have an easy way of checking the line-level inputs on the Firebox, but if need be I can look into that tomorrow as well. I recorded with the setup successfully this morning, so the problem would have developed this afternoon or evening when I fired everything back up. And, FWIW, since running into the problem tonight I've successfully moved files to and from the Firewire hard drive I record to. If it's significant, I typically hot-plug the Firebox when shutting it down for the evening since it doesn't have a power switch .
I obviously have a nice long wait on hold with Presonus and / or Apple tech support to look forward to tomorrow, but for the meantime I'd love it if any of you could help me determine whether the problem is with my Macbook or with the Firebox. And if you are in possession of The Answer, please share it with me.
Thanks,
Trent

I've had a problem with going from GarageBand to Logic. Total distortion of audio in playback (didn't record anything new, just played existing audio). The simple fix is to open Audio Hardware and Drivers preferences and uncheck/recheck core audio. The handshake seems to take care of it. Not sure if this applies to you or not. I've a 002 rack for an interface.
Another topic: The Seatle Logic user group is meeting tomorrow night 8 pm at the University Village Apple Store. Drop in if you can and commiserate with fellow Logicians.
G5 2x2 Mac OS X (10.4.8) 6.5 gig RAM
Doug

What are the iTunes digital audio levels in and out

I am having a lot of trouble with finding out and setting the audio levels in and out of iTunes.
Digital audio has 16bits at '1' with an analog signal level of +12dB, 24bit has all'1's at +18dB. Making the overhead capability for CD 16bit 12dB and that for HD 24bit 18dB.
I would like to record (using SoundStudio) a set of standard audio tones from 20-20kHz with digital levels of "all 1's" 16bit, or +12 dB analog level, "all 1's" 24bit ditto, and the same for levels of analog 0dB (-12dB digital) for 16bit and 0dB(-18dB digital) for 24bit.
What I am finding is that if I get Sound Studio to inert a tone at what it calls 0dB, save it as AIFF, then the output it from iTunes I get a much higher level, around +8dB or so!
Any ideas?

As an addition to my first question. I asked the makers of Sound Studio about levels. They tell me that the Mac standard is to have all '1's in the digital stream defined as 0dB.
Which helps as I can now record a tone at the CD level of -12dB and the HD audio level of -18dB. And if I make recordings I know to keep the input levels well into the green, not yellow and definitely not up to the red.
As you say the output of iTunes is boosted, and from my measurements this boost is in the analog circuitry and is about +8dB.
I woul dnot recommend turing down the iTunes volume control as this brings in the digital volume reduction, which depends on the algorithm they have implemented. This is not so bad for iTunes as the Audio Core software works at 32bit and can handle 16bit volume changes fairly well. But on the iPad it is different as iOS is only 16bit audio so the volume algorithm is poor. So always leave the volume at maximum and turn down your HiFi volume control!
Or use a digital output to an external DAC as the iTunes volume control is then disabled. Set Audio MIDI for 24bit output and you are ready to go with HD Audio.

Digital Audio Center record

Similar Messages

Maybe you are looking for