microphone

How can i read the sound data from the microphone? I don't want to record and then access the data, i want to be able to access the sound input live? You can record sound (PCM samples) from the microphone to very short memory buffers (as short as a few milliseconds in duration). That's as close to "live" as there is using iOS API's. Look at the aurioTouch example for low latency AudioUnit RemoteIO recording code, with live FFT analysis and display. Check this link: http://code.google.com/p/ios-coreaudio-example/ Captures from Microphone & plays through speaker. 来源： https://stackoverflow.com

Thanks in advance for the help. I am developing an android application for research purposes and need to disable the speech to text button on the soft input keyboard. The reason for this is due to concurrency issues that arise since the application I am developing uses the microphone. I understand that for a general application disabling keys is generally seen as impossible (since users may change default keyboards). I know for a fact that the default keyboard will be used. With this in mind is it possible to disable certain keys? I believe that at the least I should be able to specify the

I recording sound from Microphone in Windows Phone device. Using Xna.Framework.Audio.Microphone I store the sound in MemoryStream . I can save it to PCM format. However It will be much better to convert it to mp3 file. If converting to mp3 is impossible then maybe somebody at least knows how to convert it to wav. Thanks for your answers. Here is a brief example I created showing how to save wp7 recorded audio as a wav stream: http://damianblog.com/2011/02/07/storing-wp7-recorded-audio-as-wav-format-streams/ Here's a great thread which answers this question: http://social.msdn.microsoft.com

In my app, I will be using a microphone to do some recording. From iOS7.0 onwards, the user is asked to check the permission to access the microphone before starting the audio. I have a button 'Start Recording' in my app. Here it first checks the user's permission for recording. Here's the code to do this: if([[AVAudioSession sharedInstance] respondsToSelector:@selector(requestRecordPermission:)]) { [[AVAudioSession sharedInstance] performSelector:@selector(requestRecordPermission:) withObject:permissionBlock]; } #ifndef __IPHONE_7_0 typedef void (^PermissionBlock)(BOOL granted); #endif

We have an Android device on which we would like to use the microphone in 2 app simultaneously. In fact, we have a vocal command service that is running in the background (we are using the CMU Sphinx library). The problem is when we start a video recorder (camera application), we can't start the recording as 2 applications can't access to the microphone at the same time. Error 08-20 12:20:14.601: I/MediaRecorderJNI(7261): prepare: surface=0x59590668 08-20 12:20:15.916: E/MediaRecorder(7261): start failed: -38 08-20 12:20:15.916: E/com.example.CamcorderView(7261): Failed to start recorder. 08

In my Android App, I would like to take in some audio from the mic of the smartphone and play it immediately, live, like a microphone, with no lag. I am currently thinking of using AudioRecord and AudioTrack classes (from what I have read), but I'm not quite sure how to proceed. I checked out some other questions on Stack Overflow but they don't exactly answer what I would like to do. And most are from 2012. So how can I use these classes to input and output audio simultaneously? ALSO: I had a look at the MediaRecorder API , but from what I read, that requires you to save the audio to a file,