microphone

I've got a problem where I need to "simulate" microphone output. Data will be coming over the network, decoded into PCM and basically needs to be written into the mic - which then other programs can read/record/whatever. I've been reading up on alsa but information is pretty sparse. The file plugin seemes promising - I was thinking of having a named pipe as "infile" which I could then deliver data to from my application. I can't get it to work however (vlc/audacity just segfault). pcm.testing { type file slave { pcm { type hw card 0 device 0 } } infile "/dev/urandom" format "raw" } Are there

I have a requirement where I need audio from both the mics on my android phone simultaneously in order to do some signal processing using Eclipse. Do you think it is possible to do this? Also can you suggest a method to start recording for both mics realtime simultaneously? For two instances of class AudioRecord, if I pass audio source as MIC and CAMCORDER respectively, will I be able to capture two separate mic inputs simultaneously? I am not sure if the mics will work in parallel, and also do not know how to get them to start recording at the same time. Any input regarding this will be

I need to capture audio from a PC with Windows 7 with a C# program. I need to get all the frequencies until 20 khz. Do you know if there are a way to do it? You could take a look at the NAudio Library at codeplex http://naudio.codeplex.com . A nice project for recording mic input with NAudio can be found here http://voicerecorder.codeplex.com/ . I found some links that could help you Visit http://www.codeproject.com/Articles/2615/DirectShow-NET ? Or http://www.codeproject.com/Articles/4889/A-full-duplex-audio-player-in-C-using-the-waveIn-w ? Or You could use Matalab and Link it with .Net using

I have a problem, i have set MediaLocator to microphone input, and then created Player. I need to grab that sound from the microphone, encode it to some lower quality stream, and send it as a datagram packet via UDP. Here's the code, i found most of it online and adapted it to my app: public class AudioSender extends Thread { private MediaLocator ml = new MediaLocator("javasound://44100"); private DatagramSocket socket; private boolean transmitting; private Player player; TargetDataLine mic; byte[] buffer; private AudioFormat format; private DatagramSocket datagramSocket(){ try { return new

I want to develop a virtual microphone driver. Please, do not say anything about DirectShow - that's not "the way". I need a solution that will work with any software including Skype and MSN. And DirectShow doesn't fit these requirements. I found AVStream Filter-Centric Simulated Capture Driver (avssamp.sys) in Windows 7 WDK. What I need is an audio part of it. By default it reads avssamp.wav and plays it. But this driver is registered as WDM streaming capture device. And I want it in Audio Capture Device. There are some posts in the web but they are all the same: http://www.tech-archive.net

I'm looking to build a Morse decoder (and eventually a coder) in C. I'd like to use the audio port as input, and sample the incoming voltage on the port. How do I go about reading the voltage on a microphone audio port in Windows using C? The simplist way is to use the waveIn functions provided by the Win32 API. You can read Recording and Playing Sound with the Waveform Audio Interface for an overview, or just dive into the API documentation . 来源： https://stackoverflow.com/questions/1897042/capture-microphone-audio-stream-in-windows-using-c