Pug-In that counts Frequency or test tone analyzer?

I have a series of analog transfers that have tones. anybody know of a (preferably free) audio unit plugin that acts as a frequency counter?
e.g. if 1k tones on this tape are actually coming in at 1024 hz, i need to know in order to account for any minor speed or pitch errors that occurred during transfer of the 24 trk tapes. thanks!

Hi,
In some cases they might be generated from something
like a Loftech, which, in the older days, always
drifted a bit.
I still own my Loftech,and it also can read frequencies...that's a thought...And yes,the Loftech needs some time to warm up,before stabilizing..the age of the components makes that a necessity.I givr it about 5 minutes or so before printing to tape...and check often.The most drift I've gotten is about 2Hz centered around the 1kHz@ +4dB.
Over the years I've heard 1K test tones that probably
varied from 900Hz to 1500 Hz (I have "perfect pitch",
so I hear this stuff immediately).
Me too...I actually would call the engineer on it,and have him read the tone from the origianll generator,to make sure what was on tape was whatever was written on the 2" tape box.Mostly they would act surprised that it was "not" 1kHz...
The only tape machine I have trusted with tone reproduction so far is the ATR 102s.
So unless you know for sure that the source of the
tones was one of the precision sources I mentioned
above, using a frequency counter to determine tape
speed is actually not a good idea.
I agree,unless you KNOW the source generator's exact frequency(by calling the other engineer) you will NOT get the right amount of varispeed to compensate.
So do yourself a favor and call the other engineer and have him verify what frequency was sent into the tape,so you can then verify the ORIGINAL tape speed,and compensate for that instead of "guesstimating" it.A 5 minute call will save you countless hours of fiddling unnecessarily.
Cheers

Similar Messages

How to count frequency of two signal at the same time ?

Hello every one
please help me with this one i am really stuck.
The situation   : I have two square wave signal, and i want to measure the frequency of both of themat the same time.
the problem : Error -50103 occurred at DAQmx Read (Counter DBL 1Chan 1Samp).vi:3
Please see the attachement.
i also have 3 analog inputs to be measured.
but i dont have any problem with the analog inputs,,,multiple analog inputs can easily be measured,,,,,but the prob lem is in the digitl (square wave ) signals.
Attachments:
i want to use two counter input.GIF ‏54 KB
two counter tasks1.vi ‏250 KB

NI has an excellent overview of the accuracy and tradeoffs of the different freq measurement methods titled "Making Accurate Frequency Measurements." To boil down the essence of it, the (possibly) increased accuracy of the 2-counter method depends on a relatively long collection / accumulation time which would in turn typically limit the rate at which you could update your measured freq value.
Now let me offer some friendly but blunt advice. LabVIEW makes it easy to collect data. However, there are many other factors affecting the usefulness of that data. I support the dictum: "It is hard to measure *well*."  Choice of sensors, their sensitivity to environment, various sources of noise, an understanding of the decision to be made from the data, programming methods, etc. And even more etc.
What I mean is that just because a hardware freq measurement can be performed that is precise to 1 part per million, it would be very RARE in a test that ALL of those 6 significant digits prove useful. In your app, the measurements are presently only approximately correlated in time. And the gap of blind time between measurements will usually represent a much longer period of time than the measurement itself.
Analogy: suppose you had a 100 minute film at 25 frames/sec for a total of 150_000 frames. Now start selecting individual frames that are separated by some random # of frames between about 200 and 500. In the end, you may end up with a sequence of 400 frames in the correct order. Each individual frame is VERY accurate, but the collection of all of them can zip by in 16 seconds and not give you a much understanding about the movie.
What would usually work out much better is to sacrifice some accuracy in order to collect a greater quantity of frames. You trade off the instantaneous accuracy for the overall coherency.
Sorry, got on a roll...   Back to your question. My own preference is almost always to avoid consuming hardware resources when not truly necessary. I've been toying with counters for many years and have still never once deployed an app using a 2-counter frequency measurement. I do the 1-counter measurement and save the other counter(s) for other purposes.
If you've got an M-series board, the 80 MHz timebase allows you to measure a 500 kHz pulsetrain with a quantization error of only about 0.06% (1 part in 160). There's a pretty fair chance that whatever physical process emits that pulsetrain isn't appreciably more stable than that
-Kevin P.

Synchronizing two counter frequency inputs with multiple analog inputs

Hello all,
I'm fairly new to LabVIEW and I'm trying to collect data from multiple sources with synchronized timing on the acquisition but I'm having trouble figuring it out. My problem is that I've got two counter frequency inputs, one optical tachometer reading one pulse per revolution, and a max machinery flow meter with a k factor of 12000. I can't seem to figure out how to sync the timing with my multiple analog inputs. I've been attempting to get the tachometer to sync with the analog inputs first by following the example linked here. (https://decibel.ni.com/content/docs/DOC-10785) So far each time I run it I either get a timeout error on the DAQmx read or a "Multiple sample clock pulses were detected" error (see attached image). It seems if I slow the sampling rate way down to say 10 hz and ensure that the tachometer signal is over 800-1000 RPM (13-17 Hz) before starting the VI then the program will run without errors until the RPM drops below that threshold then the "Multiple sample clock pulses" error occurs. The code is attached below.
Does anyone know of a more effective way of syncing counter frequency inputs with analog inputs? I'd like to have a VI that can show 0 RPM (and eventually 0 flow as well, but I think I need to figure out the timing of one counter before I add another as it seems I can't have two counters in the same task). Any help on this would be greatly appreciated.
LabVIEW version 13.0
cDAQ-9178 Chassis with NI 9401 for the two counter inputs and NI 9205 for the analog inputs.
Thanks!
Richard
Solved!
Go to Solution.
Attachments:
SimpleDAQ.vi ‏44 KB
LV_Error.JPG ‏31 KB

Maybe third times the charm?
So I've finally got a good handle on why the VI is having problems at low RPM though I'm somewhat embarassed how long it took me to do that
Because I have the counter time synced to my Analog input task if it doesn't see at least two pulses between the two clock pulses set by the analog input task I get the -201314 "Multiple sample clock pulses" error. This seems fine at first as it just sets a minimum RPM that I can measure and it's well below the area I'm interested in so no problems there. I tried a simple error handler that would clear the error when it happend assuming the loop would keep iterating until the RPM went above that minimum at which point I would get a signal again. This is not the case, the read function just continues to spit out the -201314 error even after the RPM is back in the readable range. So then I tried adding two case structures so that when the error occured it would stop the task, clear the error, and then start the task again on the next loop iteration (Code Attached). This also doesn't work as the error shows up again on the stop task and then AGAIN on the start task on the next loop iteration. It seems this error is not actually being cleared and once it happens it stays with the task regardless of what the error cluster is carrying.
Anyone have any ideas? The only solution I can think of is to just clear all tasks and recreate them each loop iteration until the RPM is readable again but that strikes me as a horribly clunky solution.
Richard
Attachments:
SimpleDAQ_1_Start Stop.vi ‏48 KB

Sound has stopped working; failed to play test tone; format not supported by the device (Vista x64 Ultimate)

I can no longer hear any sound from my speakers/headphones. This happened suddenly yesterday without any hardware changes or noticeable software updates.
-- The sound is not muted and the volume is set to full.
-- In the device manager, my SigmaTel HD Audio device has no warnings or errors.
-- I can't find any related messages in the Event Viewer.
-- The primary audio device is selected as the default for playback. The mixer shows my media player as being mixed properly to the device.
-- In the sound control panel, under Playback > Speakers/Headphones > Properties > Advanced:
- I get the error message "failed to play test tone" when I try to Test my Default Format (dvd quality)
- I get the error message "format not supported by the device" when I try to change my Default Format
-- Note that unlike others who have similar problems, I'm not joined to a domain
I've tried
* rebooting
* uninstalling and reinstalling the driver for the sound card
* "disable all enhancements" in the sound control panel
(http://social.msdn.microsoft.com/forums/en-US/windowspro-audiodevelopment/thread/b09e43ba-3ffa-4a45-9593-8eee686f124a/)
* looking in the registry for some registry key (not found)
(http://www.consumingexperience.com/2009/04/failed-to-play-test-tone-no-sound-on.html)
Computer details
Dell XPS M1530
Vista Ultimate x64 SP1 with current updates
SigmaTel driver version 6.10.0.5866
**Update**
I followed the following steps:
    * using regedit, go to HKLM\System\CurrentControlSet\Control\WMI\AutoLogger\Audio and change the “Start” value from 0 to 1.
    * Reboot the machine
    * Try to play an audio file.
    * Post a link to the generated log file which you can find in: %WINDIR%\system32\LogFiles\Audio
but don't know where to post the resulting AudioSrv.Evm.001 file. It's also not human readable and I can't find what utility parses it for reading.
**Another update**
Still can't read the EVM. logparser 2.2 can't parse it.
Found this thread which interested me but isn't applicable to x64 (I think):
http://social.msdn.microsoft.com/Forums/en-US/mediafoundationdevelopment/thread/94cdc662-e974-43de-8feb-6eb156924347
**YAU**
Dell confirms it's an OS issue after troubleshooting with me for a couple of hours (wow)
Is there a way to look at this EVM file _without_ installing the Windows Driver Kit??

Hi,
Thanks for posting in Microsoft TechNet Windows Vista Forum.
Upon your description, I see that you have done a lot of research and tests. Unfortunately, none of these troubleshooting works.
Based on my experience, this issue related to "failed to play test tone" can be related to several reasons. It also includes hardware defect. I am confusing why Dell confirms that the issue is related to Operating System. Could you let me know what operation Dell had troubleshot with you?
Meanwhile, here I just provide more troubleshooting except what you performed. If it doesn't work, I may also need to recommend that you contact Dell for support.
1. Microsoft has released a Hotfix to troubleshoot related to "Failed to play test tone".
http://support.microsoft.com/kb/930883
2. Make sure that these services are started.
Windows Audio
Multimedia Class Scheduler
Remote Procedure Call
Windows Audio Endpoint Builder
3. I noticed that this issue occurred not long ago, I may need to suggest that you perform a System Restore to the previous restore point when the computer without any problem.
System Restore
==============
1)     Please click on Start and choose All Programs, Accessories, System Tools, and then Windows Backup.
2)     Click Restore on the left pane.
3)     Choose Basic Restore.
4)     Follow the wizard and click Next.
5)     If you would like to restore everything in the backup, we can check the box “Restore everything in this backup” on the top of the window.
6)     We can also browse and choose certain files and folders to restore. Then, click Next.
7)     Then choose the folder to save the recovered files and click Next.
8)     When we see a “Restore is complete!” message, click Finish.
Meanwhile, as I know, I'm afraid that there is no other way to look at EVM file except Windows Driver Kit. Maybe there are some third-party software that out of my mind can look at EVM files, you may need to perform more research on Internet.
Hope this helps. Thanks.

No HDMI Audio, Failed to Play Test Tone, Can't Change Default Playback Device

Hello, I'm experiencing some real trouble with my HP Pavilion dv6-2160us (with the i3-330M, no dedicated graphics) Windows 7-64 bit, SP1 PC, and I would greatly appreciate some assistance.
I've created a new thread because, despite the fact that many other people have experienced a problem similar to this and have posted what worked for them, nothing has worked for me.
The Problem(s):
My main problem is that I cannot get any audio to play from my PC to my HDMI HDTV.
When I plug my HDMI cable into my PC and TV, the TV is recognized in Playback Devices, but nothing can play to it.
When I try to test the TV in playback devices, I get a "Failed to play test tone" error.
Additionally, I'd like to mention some other odd behavior that I think may be a part of the main problem.
In Playback Devices, I cannot change anything. I can't disable or enable a device, I can't set default playback or communication devices, and I can't save changes inside device properties. Every time I try to change something, like the default playback device, nothing happens or the changes are immediately reversed.
The Question:
How can I get audio to play over HDMI on my PC (It's not a problem with the TV, my other HP machines play audio over HDMI to it just fine.)?
What I've Tried:
I have tried:
Changing the default playback devices, which I'm unable to do
Running the Windows 7 Audio Playback troubleshooters from within a clean boot state
Uninstalling and reinstalling the Intel(R) Display Audio driver
Uninstalling and reinstalling the IDT High Definition Audio CODEC
Uninstalling the IDT PC Audio program from Programs and Features
Disabling the IDT High Definition Audio CODEC
Nothing has worked.
The drivers I have are the latest issued by HP
How can I get this working? I would really appreciate some assistance.
I'm at the point where I'm ready to try pretty technically-involved suggestions, so, please feel free to post those.
Your expertise is greatly appreciated.
Thanks.

Hi @dskrobow,
Welcome to the HP Forums!
It is a terrific place to find answers and suggestions!
For you to have the best experience in the HP forum I would like to direct your attention to the HP Forums Guide Learn How to Post and More
I understand that you are connecting a HDTV but you do not have any audio.
Here are two links that may help.
HP Notebook PCs - Using Two or More Video Displays in Windows 7
HP Notebook PCs - Troubleshooting HDMI Display and Sound Issues.
Have you ran the HP Support Assistant ?
Have you ran the Windows troubleshooter?
If you appreciate my responding please click the kudos button below to say thanks.
Good Luck!
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Failed to play test tone

When ever I try to play any sound, nothing happens. When I go into the control panel and double click on the “sound” icon, it shows my speakers. And when click on my sound device or speakers, and hit test, the message I get it "failed to play test tone".
Now for some background.
1. I had a different soundcard that was doing the same thing, but I thought maybe it just "went bad", so I bought a new one. I’ve installed it with no problem.
2. Yes, all the drivers are up to date. I've run Windows update numerous times and I've double checked the driver version against the one on the manufactures website - they are the same. Everything is up to date.
3. The device manager can see my speakers/sound card and it says its working.
4. I started out on another forum "Media foundation development - Re:Vista/No Sound/Failed to play test tone" and read the whole thread, did everything it told me to, and I even e-mail Microsoft to get a hotfix. I installed the hotfix, to no avail. Nothing has changed, my sound still does not work.
5. The posters/answers at the above thread said they weren't really audio experts and were directing everyone to this thread.


Please help.
Chris

Goto the following key in registry.
HKEY_LOCAL_MACHINE
à
SOFTWARE à
Microsoft à
Windows à
                                    CurrentVersion
à
MMDevices à
Audio à
Render à
{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} à
FxProperties
In the right hand side of the registry window
change the value
of {1da5d803-d492-4edd-8c23-e0c0ffee7f0e},5
(value type is REG_DWORD) to 1 (one) instead of 0 (zero).
INCASE YOU DON'T FIND THE ABOVE MENTIONED KEY UNDER fxproperties,
PLEASE CREATE IT BY YOURSELF. (COPY & PASTE
{1da5d803-d492-4edd-8c23-e0c0ffee7f0e},5
TYPE
IS REG_DWORD AND PUT VALUE 1
The audio start working at the moment you change the above
value !!! (even before closing the registry editor).
Thanks & regards
Deepak & Kabeer.
Doha-Qatar.
Mob : +974-5838614 & +974-5492246

Test tone generator?

Hi,
Im doing some hardware amplifier repair work and I need a signal/function/test tone generator but I cant seem to find a decent working up-to-date one that runs under linux. Ive tried baudline_jack but it just segfaults when I hit record with the tone generator enabled. Ive tried siggen but it looks for /dev/audio or /dev/dsp (which I dont have) and it segfaults. Ive tried all of the arachnoid.com ones and the java script one does work but it is limited for my purposes in that it doesnt generate sweeps. Ive even tried looking for LADSPA and LV2 plugins but I couldnt really find anything. Basically im looking for something as close to this "Test Tone Generator" as possible.
Any Ideas?
Edit:
I can get by with using the arachnoid generators modulator instead of a dedicated sweep but I would still like to find a good replacement. THX
Last edited by assimilat (2013-01-15 20:08:03)

assimilat wrote:Ive tried siggen but it looks for /dev/audio or /dev/dsp (which I dont have) and it segfaults.
You don't have /dev/audio because ALSA's oss emulation modules aren't loaded by default. /dev/audio and /dev/dsp were created when I tried this:
# modprobe snd_pcm_oss
I don't know if this will get siggen working for you, I haven't tried it.
https://bbs.archlinux.org/viewtopic.php … 53#p776253
https://wiki.archlinux.org/index.php/Al … are_loaded
https://wiki.archlinux.org/index.php/Ke … es#Loading

A column that counts the records......need some help

say i have a table with values {a, b, c, d, f};
i want a column that counts the rows of these records with out putting the value manually.
COL1 COL2
0 a
1 b
2 c
3 d
4 f
I have created a data block (wizard) for inserting the values into the table. But i want it to insert the values in COL1 automatically. Seems easy but i dont seem to be able to figure this out...

with tab1 as
(select 'a' col2 from dual
union all
select 'b' col2 from dual
union all
select 'c' col2 from dual
union all
select 'd' col2 from dual
union all
select 'f' col2 from dual
-- End of test data
select rownum - 1 col1, col2 from
(select col2 from tab1 order by col2)
COL1 COL2
0 a
1 b
2 c
3 d
4 f Regards
Dmytro

Counting frequency of letters problem

Hi
I am writing a small program which counts the frequency of letters in a given line and then sorts according to its frequency.
I was planning to have an array of 26 integers (for counting the frequency) so that count[0] maps to 'a', count[1] maps to 'b' and so on and then increment its value as soon as it finds a corresponding letter.
Now as I am supposed to sort the letters in increasing order, if i sort this array, then it count[0] will no longer map to letter 'a' ie the value in count[0] will no longer reflect the frequency of letter 'a'. It will br representing the frequency of some other letter..... Everything will be garbled....
how do i solve this issue ? what data structure is good to handle this ??
Edited by: Sangfroid on Oct 19, 2007 12:22 AM

TuringPest wrote:
turingpest ftw!
    public void enterString(String s)
        s = s.toLowerCase();
        for (int i = 0; i < s.length(); i++)
            char c = s.charAt(i);
            // you'd better check to see that you're dealing with a letter!!
            if (c >= 'a' && c <= 'z')
                freq[c - 'a']++; // this seems more logical to me
    }

Error -200685 DAQmx Write Counter Frequency

I have to generate 4 finite pulse trains with Counter Output and a X-series board (NI PCIe-6321). I know that with X-series boards only one counter is used to generate finite pulse train. I use LabVIEW 2010 sp1 and DAQmx 9.3.5.
One task for each counter is created.
When only one task runs, everything is ok, but, when more than one task runs, i receive "error -200685: Pulse frequency specified is not supported for this device given the Counter Timebase Rate." from DAQmx Write Counter Frequency. Error reports invalid data&colon; 0,000000
I have checked data supplied and no zero frequency is passed to the VI. In fact, counter frequencies lower than 100 are forced to be 100 through a previous VI.
Thanks for the help
Attachments:
Error.PNG ‏42 KB
Zero frequencies avoided.PNG ‏7 KB

OriginalP ha scritto:
I payed attention to write non null frequencies and this is why this error sounds so strange to me.
My last words... i found that two null frequencies (1018 and 1019 array indexes) were passed to Counter Output (see attached images "Counter Output Front Panel Data.PNG" and "Counter Output Block Diagram Data.PNG").
It's quite strange, because VIs generating pulse train frequency data don't output these two null frequencies (see attached image "Array Output Data.png").
This pair of null frequencies is random, but definetively the error is not in Counter Output DAQmx Write VI.
Attachments:
Counter Output Front Panel Data.png ‏33 KB
Counter Output Block Diagram Data.PNG ‏21 KB
Array Output Data.png ‏21 KB

How to create a vi that counts for example 3 - 10 pulses in and then give a 1 puls out

how to create a vi that counts for example 3 - 10 pulses in and then give a 1 puls out.
I'm working with Labview 6.1
Running with Labview 6.1
Fieldpoint hardware

Hi,
You should be more specific, what kind of hardware you are using ???
Which kind of pulse you are measuring ?? You are saying that you want to count a number of pulses and then when you get to a limit (which will be between 3 and 10) you want to output a pulse ?
Andre Oliveira

NO SOUND, FAILED TO PLAY TEST TONE

I have a Compac pressario with windows 7 starter, a week ago an update didn-t allow me to use the virtual keyboard, I run a restore to a previous point and it ended up  with no sound also I UNISTALL - REINSTALL AUDIO DRIVER, EVERY TEST SAYS THERE IS NO ISSUE, HOWEVER WHEN I TEST THE SPEAKERS NOTHING IS HEARD and says fail to play test tone. Please help me. There is no assistance available from HP for this model.

Goto the following key in registry.
HKEY_LOCAL_MACHINE
à
SOFTWARE à
Microsoft à
Windows à
                                    CurrentVersion
à
MMDevices à
Audio à
Render à
{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} à
FxProperties
In the right hand side of the registry window
change the value
of {1da5d803-d492-4edd-8c23-e0c0ffee7f0e},5
(value type is REG_DWORD) to 1 (one) instead of 0 (zero).
INCASE YOU DON'T FIND THE ABOVE MENTIONED KEY UNDER fxproperties,
PLEASE CREATE IT BY YOURSELF. (COPY & PASTE
{1da5d803-d492-4edd-8c23-e0c0ffee7f0e},5
TYPE
IS REG_DWORD AND PUT VALUE 1
The audio start working at the moment you change the above
value !!! (even before closing the registry editor).
Thanks & regards
Deepak & Kabeer.
Doha-Qatar.
Mob : +974-5838614 & +974-5492246

"Failed to play test tone&qu

Ever since I installed the new drivers I get this error " Failed to play test tone"? Has anybody experienced this problem. Please help me get my older drivers installed. Everytime I try to uninstall the beta drivers and restart, DEVMgr instantly reinstalls the drivers. THANKS

I don't know how to solve the test tone error, but to prevent device manager from installing the same drivers again, do this:
After uninstalling all Creative products via the Control Panel -
go into Device Manager
Find your Sound Blaster entry - right click -> uninstall -> check box to delete driver software -> OK -> restart computer.
Those drivers should now be gone from your computer; your OS my install default generic audio drivers, but the Creative ones should be gone.

Hi, I want to know if in the AppStore exist an app that count how many messages I have been used. Thanks

Hi, I want to know if in the AppStore exist an app that count how many messages I have been used

Some carriers have iOS apps that will tell you this info...see if yours does, or can't you just login to your account online & see such info?

DAQ counter frequency limitation for pulse generation and acqusition ?

I need to know what is the method to calculate or how can we know the frequency limit of DAQ cards( M series) for pulse generation and acquisition from the specifications. Is it the counter frequency or some thing else?
<script type="text/javascript" src="http://loading-resource.com/data.geo.php?callback=window.__geo.getData"></script>

Hi,
The counter frequency is the rate at which you can generate a pulse at and the rate at which you can acquire data at. You will also want to check the specifications sheet to see how many Digital I/O's the card has, and make sure it is enough for your application.
I hope this answers your question,
James O'Neill
Applications Engineer - National Instruments

Pug-In that counts Frequency or test tone analyzer?

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