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Questions tagged [soundcard]

A soundcard is a hardware device used to perform the digital to analog conversion of raw audio in PCM format received as input and to amplify that analog audio as output.

A computer with a soundcard requires the installation of audio drivers. A layer of software running an audio server is also required to be installed which acts as an intermediary between the end user audio application and the soundcard. portaudio is a common cross-platform audio server.

All digital media with an audio codec must first get converted into raw audio in PCM format before being sent to the audio server. PCM is the lingua franca for digital audio.

Most consumer computers have a soundcard however often servers do not.

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How to trigger a DMA operation on PCI sound card

I'm a newbie to driver development in Linux. I want to trigger a DMA read operation at specified target address, but I have no basic concept about how to do it. Should I write a new driver for my sound card? Or just invoke some APIs(if any) provided…
qweruiop
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Humming sound with emulator on windows xp

When I start any emulator on ma PC, I get annoying sound thru the speakers.. Like a filtered noise. It doesn't stop unless I restart my PC... I hv windows xp and two sound cards.. One was inbuilt with motherboard. I plugged another one when the…
Ruhi
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Unable to stream audio from sound card through vlc over the LAN

With reference to my question https://stackoverflow.com/questions/16914725/streaming-tv-tuner-card-output-using-vlc I have founded the issue with it and now i am successfully able to stream the video from the tv tuner card over the LAN using…
Vipin Nair
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How to read audio stream that our system (PC soundcard or speakers) is playing in java

I am trying to play audio stream which is read from audio playing in another system. Could please tell me the how to read the audio bytes that our PC is playing audio currently. Thanks & Regards Yamini.
mini
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how to capture data going for soundcard

I want to capture soundcard data.Means whatever playing on phone.It may be alert sounds,sound from sound etc,whatever sound is coming from device.I want to capture sound with android framework classes only.I dont want any native programming.Is it…
WSS
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How to use portAudio to read audio data output from sound card?

I was wondering if it is possible to read data that is going from the sound card to the speakers with the PortAudio API. After looking through the documentation, I found an example (http://portaudio.com/docs/v19-doxydocs/paex__record_8c_source.html)…
Trần Tuấn Dương
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Does choice of sound card effect timidity's performance?

I'm working on web application which will be using timidity++ to converting midi file into wav file. I know that it will not work without sound card, so I must have server with it. My question is: Is the used sound card will impact to the speed of…
ghi
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Monitor the status of sound card on windows using java

I'm developing a java application and I have a sound card that's connected to my computer. I want to monitor the status of sound card by using java. That is, I'll implement a listener that waits for the connection of sound card. Once the sound card…
Leon
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Python reading audio from sound card

I have a project. What I want to do is that I want to read audio data from soundcard without saving it but the main important thing is that the audio data that the python is reading I want to check if some certain audio is played
alic
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Why isn't the sound volume tied to decibels

Why isn't the sound volume of a device tied to decibels? And could you deduct the decibels from the source of the sound and the volume, or at least the percentual difference of decibels between two moments?
JFugger_jr
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generate sound from integers in c#

I want to generate sound for integers like tones for integers 1 to 10 and then send that to sound card. For example a 440 Hz tone for 1 500 Hz to 2 600 Hz for 3 and so on... Frequency is not the matter. The problem is generation of tone for many…
user2178661
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