Use your sound card as an oscilloscope, event counter, spectrum analyzer etc..

If you enjoy using your computer equipment for as much as possible, here is something that I have wondered about for some time ... how easy is it to adapt your good-quality sound card to use it as an audio-range oscilloscope, event counter etc..
I stumbled across this product last week and it looks quite neat (sorry if this is already well known in this group .. i've been away form some time :-)
?Daqarta
(I have no direct interest or relationship with this company).
?- Mitch

stlarch wrote:Hi, did you install alsa-utils and add alsa to your daemons array in /etc/rc.conf? Also, you need to add yourself to the audio group, #gpasswd -a yourusername audio. The wiki has an article on alsa that should help, or check the beginners guide.
Yes, of course, alsa-utils is installed (so is alsa-firmware, and alsa-oss). I'm in audio group.
ewaller wrote:can you post the output of
cat /proc/asound/cards
Also, you should have a directory /proc/asound/card0/  Which should have one or more files with names of the form codec#n, where n is a sequential integer starting with 0.  If those files are not hellaciously long, post them here (With code tags).  Otherwise, could you pastebin them and provide a link?
Edit: fixed typo
~ $ cat /proc/asound/cards
--- no soundcards ---
The directory /proc/asound/card0 doesn't exist :
~ $ lsi /proc/asound/
total 0
-r--r--r-- 1 root root 0 Mar 5 12:38 cards
-r--r--r-- 1 root root 0 Mar 5 12:38 devices
-r--r--r-- 1 root root 0 Mar 5 12:38 hwdep
-r--r--r-- 1 root root 0 Mar 5 12:38 modules
dr-xr-xr-x 2 root root 0 Mar 5 12:38 oss/
-r--r--r-- 1 root root 0 Mar 5 12:38 pcm
dr-xr-xr-x 2 root root 0 Mar 5 12:38 seq/
-r--r--r-- 1 root root 0 Mar 5 12:38 timers
-r--r--r-- 1 root root 0 Mar 5 12:38 version
Thanks for helping !

Similar Messages

  • How do you use your sound card and sound VI to get sound levels off a microphone​.

    We are using LabVIEW 5.0 and we want to capture sound from a microphone. Is the sound VI and a sound card enough to do it, or do you have to get more materials.

    If you are in Microsoft Windows platform, you can just record the sound with the sound recording feature of windows.
    You can do the same with LabVIEW, but it actually a little more difficult, though you do have more flexibility.
    Try looking at your sound examples included with LabVIEW. There should be a few examples on how to acquire audio that may be exactly what you are looking for (always look at the examples, they cover the gammit of LabVIEW capabilities and are a great way to solve something to which the answer is not immediately availabe. I don't know of any other software package out there that provides this kind of sample program database.)

  • Want to use 2 sound cards

    I have been checking around and have noticed on some of the web cast sites that there are possibility in using multiple sound cards on one machine. The basic functionality is possible pending IRQ and BIOS settings.
    I currently have an older SBLive Platinum W/ Live drive and have tweaked it out pretty nicely for basic I/O.
    I was capable of getting most of the routing possibilitys working on that EMU Chipset with an opensource program I found a while back along with the Audigy drivers. I would like to keep using the card and the bay. Could revert very easily back to the original software and drivers.
    Enter problem........
    I have been made aware of the possibility that the X-Fi Platinum is "in the cards" for X-Mas. And I am intrigued by the newer functionality. Then I start thinkin' see....
    2 bays
    2 cards
    2 midi in
    2 midi out
    2 headphone
    etc. etc. etc.
    What about 2 seperate sets of control software that is used for each card. Main output from one, monitor output from the other. Control room out from one, Tape out out the other. ASIO, ASIO, ASIO Hmmm.
    I have no experience using two cards in one machine but considering I was given' the first card to begin with and now I may be gettin' a second one of higher quality I wonder If anyone has any data concerning the 2 card issue.
    Thanks for any responses in advance.

    Hey....
    Interesting that this post has a view of 77 and the response I get is a question...... but cool.
    I will try to help.
    Not that familiar with the 2000 Platform but I would start by doing a full uninstall of the current drivers and software for the SB Platinum. Download the LiveDrive-Uni Pack from the update link. Getting rid of your old audio drivers is a fairly importaant step.
    http://us.creative.com/support/downloads/downloadive
    Then DL the software if you want all that stuff.
    I remember that when I first started fiddling with this unit I had a similiar situation where I could not get the audio on the front bay to function properly.
    I think the driver update took care of the issue.
    At any rate .... I have just done a clean install of XP, got the video card screamin, and I am going to re-install the Platinum with the drive tonight. I am going to try with a minimum of the bundled software so driver and AudioHQ with Creative mixer are about all I am interested in.
    The Emu 10kx drivers are supported on this card as well as the Audigy, with that said the Kx drivers from Lugosoft might be of interest if you cant get the Creative stuff working.
    I will post again with the process if all goes well.
    There is a whole slew of settings that could go wrong with this IMHO 'GLITCHY' card.
    I am gonna' get it to work with the new X-FI If my life depends on it.
    http://kxproject.lugosoft.com/index.php?skip=1

  • Audio-noisy clicks,+popping -using external sound card & Traktor software

    I have a Macbook with OS 10.4.10
    I purchased it so that I may install Traktor "DJ" software on it nd use it through a professional pa system as i have seen other people use the macbook.
    I previously had a dell latitude which was very noisy so I switched to the Macbook.
    However it is even noiser then the Dell.
    Ihave checked the latency settings and I am aware I may need to tweek the settings of the laptop
    Can anyone suggest what tweeks I can perfrom to remove the clicks and pops and allow a good quality sound
    cheers
    adriant

    Hi adriant,
    try to visit both external soundcard website and traktor (native instrument) and download the most recent driver that support intel / universal.
    http://www.native-instruments.com/index.php?id=niosxtut&nitr=1&lsrc=updates&tsrid=36252
    And try not to cranck the output level to much on macbook / your sound card but amplifiedt he sound on your PA mixer board.
    Good Luck.

  • Can windows xp use a different sound card for itunes - I want to use a sound card for itunes and another for all other apps

    Can Windows XP use a different sound card for itunes - I want to use a sound card for itunes and another for all ther apps

    To the best of my knowledge, Windows is not capable of setting a specific sound card based on the app being used, it's all or nothing.
    Try a google search or search the Microsoft site.

  • Can I do a sampling with a rate of 96000hertz using a sound card?

    I have a question about sound card.I supposed to collect signal using a sound card which says supporting a sampling rate of 96000 hertz.But VIs about sound card in Labview can only do sampling with a maximum rate of 44100 hertz.I try to modify the VI,however,it says there are some wrong choiced numerics.
    What I want to ask is how can I change the software to adapt to my target.Is that possible?If it is,can someone give me an example?
    Thank you very much!

    The native LabVIEW sound VIs are limited to the sample rates in the enums. If you want a different sample rate (or more control, or a different format...), you will need to make API calls using the call library node or ActiveX. A search of this forum should point you in the right direction.
    This account is no longer active. Contact ShadesOfGray for current posts and information.

  • I want to use the sound card with LabView

    Hi. Who can help me, I want to use the sound card with LabView, I have found the function but I can't use it. Thanks.

    Christi,
    In LabVIEW 6.1 I found some examples they use those sound VIs. They are located in \examples\sound folder. Those examples should give you a good overview how to use the VIs.
    Hope this helps
    Roland

  • Using PC sound card as a signal source

    hi,
    i am a university student, and really want to know if
    it is possible to using the sound card on a PC as a signal generation source?
    i did use labview sound VI to generate a single tone, but the measured signal is not a sine waveform,the negtive period is missing.
    is there anybody can help me? thanks!

    Dear Jianshi,
    Attached is a link that you might find interesting:
    http://digital.ni.com/public.nsf/websearch/4A62AC2DB5BDDB3E86256E12003755C2?OpenDocument
    Kind Regards
    LouisP
    Applications Engineer
    NI-UK

  • Why use your credit card to download apps?

    Why use your credit card to downlaod apps ffs?

    Apple verifies your account via the credit card. This is how the Apple ID account works.

  • Getting real audio into gb2... using my sound card?

    hello,
    Ok. I have my garageband2 going and i pretty much have got the hang of making music using virtual and real instruments. I just don't know how to get Real REAl sound (such as my vocals) into it. my g4 has no mic imput but I have a didgidesign 01 sound card that i would want to use.
    where to start?

    Try going into your utilities folder and look for Audio/Midi setup utility. This may be where you would set the soundcard as your input.

  • Soundtrack Pro (randomly?) disables my Black-Magic card I use as Sound Card

    I uprgraded to 5.1 FCP and now my woes begin. Before Sountrack worked seamelessly. But now, sometimes it will play back (be audible) through the video card I use as my sound card also - a Black-Magic Decklink, and sometimes it won't. It does play though the internal speaker.
    But on a few occasions, with no apparent intervention on my part, the sound does come via the sound card.
    I have gone to my general preference, I have gone to Sountrack Preferences. I have tried the manual, but the manual search, you know, doesn't ever list any searches that bear at the moment at hand.
    Also, Soundtrack Pro disables the card. for instance, to hear iTunes through the card, I had to quit Soundtrack Pro. Of course Apple wants to charge me for "help" with this. For myself, no idea, very stymied.

    I also have the intensity settings in the mac system preferences set to y, r-y, b-y video & analog RCA Audio.
    I am still stumped!

  • HT201209 Can you use an iTunes gift card to purchase something actually in an app? (Like buy coins in the app and use your gift card)

    Can you use an iTunes gift card to purchase things actually in an app? (Buy "coins" using the gift card?)

    No idea, but it seems like you should be able to. You can give it a try, but will have to figure out some way around the automatic 1-click ordering that the App Store now does by default.
    It certainly seems like something deserving of a feedback form submission, though ...
    FEEDBACK FORM
    http://www.apple.com/feedback/ipad.html

  • Why isn't using your debit card an option?

    Hi,
    I so desperately need an app! But I can't get it because I don't own a credit card! I tried pay pal but it only offers the debit card option for American users! I'm stuck! And I NEED this app! Please if people from Blackberry app world or whatever see this. Make it an option! Please! I beg you!
    Thanks for reading!

    mikemccullagh,
    What is the mail app that you use to open PDF attachments on your iPad?  Apple Mail or something else?
    You can take a look at the following FAQ document to use the "Open in" feature.
    How to open PDF documents in Adobe Reader for iOS (iPad on iOS 7 or 8 version)
    Please note that various Google apps for iPad/iPhone do not usually support "Open in".  For example, the Gmail app for iPad/iPhone does not provide a straightforward way to open a PDF attachment in other apps that support the PDF file format.
    How do I save a PDF attachment from Gmail to Adobe reader?
    Is that the problem you have with Google Docs?
    If you can provide more details about which app you are currently viewing a PDF document, we can figure out how to open it in Adobe Reader for iOS.

  • Using SO Write to play a continuous waveform using PC sound card. (Circular Buffers?))

    How can I play a continuous, repeating waveform using SO VI's (that isn't choppy)? I gather that I need to buffer the waveform, and I see examples using AO VI's, but how do you buffer using SO Write? What are Circular Buffers and might I use this technique to solve my problem?
    Windows ME
    Dell Inspiron 5000e
    LabView 6i

    Hi MGS!
    MGS writes:
    > How can I play a continuous, repeating waveform using SO VI's (that
    > isn't choppy)? I gather that I need to buffer the waveform, and I see
    > examples using AO VI's, but how do you buffer using SO Write? What
    > are Circular Buffers and might I use this technique to solve my
    > problem?
    >
    I've tried to do the same, i.e. synthesize a wave for continuous,
    non-choppy output, and have some un-solved problems.
    A buffer is sent to SO Write, which is then transfered to the device
    driver and the sound output hardware. The problem is how to refill the
    buffer that is sent SO Write, before the internal buffers of SO Write
    and/or the device driver or hardware empties their buffer, which would
    result in silence. We need a warning that the buff
    er is almost empty,
    so that more samples can be constructed. I've found no way to do that
    using LabView 5.1.
    However, we now how fast samples are consumed, so they can be produced
    at the same rate, or perhaps a little faster. If they are produced
    much faster, the memory will fill up, but if the difference is small,
    the program can run for quite a while. It was a year ago, or so, that
    I did this, so I don't remember the details.
    A circular buffer can be used in a multi-thread producer-consumer
    program. I've done it in C and C++, from some tutorial I found on
    threads, or maybe it was from the OSS (open sound system) for
    Linux. It is a buffer with a write position and a read position. The
    addresses wraps around, so it works a bit like a conveyor belt. The
    writer must check that the buffer is non-full, and the reader that it
    is non-empty. I'm not sure how to implement it i LabView, or if it's needed.
    Helge Stenstrom
    [email protected]

  • HT201209 Can u use your gift card to download APS

    Can you use an apple gift card to purchase apps such as books and games

    Let's clarify what gift card you're referring to. You can use an iTunes gift card to purchase anything in the iTunes Store other than other gifts. If you are referring to an Apple Store gift card, that cannot be used directly in the iTunes Store, though you could use the Apple Store gift card to purchase iTunes gift cards.
    Regards.

Maybe you are looking for

  • I can not open a file. Please help.

    I subscribed to Acrobat.com and it still will not work. I am using a MAC OS 10.5.8. I can not upgrade my computer and therefore can not get a new version of Acrobat. That being said I have the same problem on my iPad and updated that Adobe app. The e

  • Add AEX to Time Capsule

    Hello- I just bought Time Capsule and it works great. I would like to use my old Airport Express to extend the network so I can also stream music from iTunes. Does anybody know how to do this? Thanks.

  • Date Function.

    Hi all, I have requirement to increase the given date for 3 months(ie., 01-jan-2011, 01-apr-2011,etc) that should be handled in RTF Template. can anyone help me in giving date function for increasing the date. Regards, Vinoth.

  • Language support for Palm PDA Tungsten E2

    I am using Palm PDA Tungsten E2 which supports the following languages: English, Deutsch, Spanish, French, Italian and Portugue  I would like to know if I can use Vietnamese language on this PDA by downloding any additional software. Any kind of sugg

  • Validation rules P_VAL_YTD(.., ..., ...)

    I have a request to work on: Check the carried forward of balance sheet profit of the last years against appropriation of earnings of the last year. So I made a rule: VAL_YTD( balance sheet profit LY)  = P_VAL_YTD( appropriation of earnings LY , 12 ,