A voice recorder doesn't need uncompressed Linear PCM audio. Compressed AMR would do fine. The iPhone framework built for recording audio is simple enough, but the only examples I've found for setting up the audio format (which come from Apple) use LinearPCM. I've tried various other combinations of values, but can't seem to get anyth...
Hi , I was trying to find an AMR Encoder for Iphone That I can integrate with my Voice recording application. Thanks, ...
It is possible to convert microphone data into AMR based data? ...
I've recorded audio in my Android application in its AMR format and I'd like to convert these to something that I can more easily use, such as WAV or MP3. I've found some online instructions for this, for instance: http://www.aquarionics.com/2004/08/04/how_to_convert_amr_files_to_mp3/ which say to start with the 3GPP reference solution...
I currently use the AudioTrack and AudioRecord classes in Android. I use the pure PCM data but I was wondering what my options are for other codecs? From this page it seems I can only encode and decode using AMR narrowband? I currently set up the Audio classes as follows: arec = new AudioRecord(MediaRecorder.AudioSource.MIC, ...
Hello friends, Is there AMR to WAV , WAV to AMR converter available written Java? I need to do conversion in realtime. Looking for open source, free or paid. Thanks. ...
hello friends I am using ffmpeg to convert amr to wav and wav to amr.Its successfully converting amr to wav but not viceversa. As ffmpeg is supporting amr encoder decoder, its giving error. ffmpeg -i testwav.wav audio.amr Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, widt...
source data is AMR-NB 5.9kbit/s (AMR_5.90) I've tried the below settings (and a dozen variations) but I'm getting nothing more than garbage audio. Does anyone know the correct settings for AMR? AudioStreamBasicDescription asbd; asbd.mSampleRate = 8000.0; asbd.mFormatID = kAudioFormatAMR; asbd.mFormatFlags = 0; asbd.mBytesPerPacke...
Is there an easy way to merge 2 3gp (amr) audio files into 1 single audio file? I need them to be synchronous/over top of each other not one after the other. I am using android to do this. I have heard somewhere that for some audio formats you can simply add the bytes (being careful that you dont get a too high or too low result). Is...
I have an application that plays back AMR audio files that it has downloaded and cached locally. This works fine the basic MediaPlayer does its job. However, the audio volume is generally very low, and manually increasing the volume with the hardware keys still doesn't make the playback quite loud enough. The behaviour seems to vary a...
Hi to all i want to find the duration of an audio file of type "amr" without converting it to other audio formats with any way? AK ...
I need to convert an AMR (Adaptive Multi-Rate) audio file recorded in a phone (as a Stream object) to a PCM uncompressed wav audio Stream so it can be processed afterwards for speech recognition. The Speech Recognition doesn't like the AMR format. This is going to be a server application using the Microsoft Speech Platform. I am not sure...
EDIT Updated code with solution I need to transcode amr to mp3, so i wrote a gstreamer pipeline in gstreamer-java. It looks like this: src ! amrparse ! amrnbdec ! lamemp3enc ! sink (actually built with the java API, of course), i start the transcode with Bus.connect(EOS, fn(){Gst.quit();}); setState(PLAYING); Gst.main(); It wo...