I have an MP4 file which I am looking to convert to WAV file, containing signed 16-bit PCM samples. I have ffmpeg at my disposal, and looking at previous SOF posts, I have tried: ffmpeg -y -i input...

I'm trying to dynamically generate a small MP4 audio+video file directly from my Android app. My original plan of attack: The user enters some basic song data (a chord progression, etc) and the...

I'm using AudioRecord to record 16 bit PCM data in android. After recording the data and saving it to a file, I read it back to save it as .wav file. The problem is that the WAV files are recogniz...

I have a .wav file. I want to get the PCM data from that sound file, so that I can get the individual data chunks from the sound and process it. But I don't know how to do it. Can anyone tell me ...

I am creating a Discord.js bot using Node.js that records the audio of users in a voice channel. It joins a channel and starts listening to each user separately. It records to a .pcm file (so only ...

When I'm talking on a voice channel the bot says 'I'm listening to xxx', But when I check the /recordings folder there is a .pcm file there but its length is 0 so basically saving an empty .pcm fi...

I am using a media codec class in Android (Jelly Bean) to encode PCM format to AAC. The file was encoded but no music player is able to play that file. I was not able to find any working code or pr...

I have raw-headerless wav audio data as MemoryStreams. Stream rawAudioStream = Producer.GetRawAudioFileStream(...); I know those streams data format: // WaveFormat(int rate, int bits, int chann...

The situation I am using VAD (Voice Activity Detection) from WebRTC by using WebRTC-VAD, a Python adapter. The example implementation from the GitHub repo uses Python's wave module to read PCM dat...

I am currently developing an Android Application that has audio recording and playing. I am new to dealing with audio and I'm having some trouble with encoding and formats. I am able to record an...

I've trying to mix together 2 16bit linear PCM audio streams and I can't seem to overcome the noise issues. I think they are coming from overflow when mixing samples together. I have following fun...

After some research, I find out this is possible to capture the audio data in libaudioflinger of Android. I think the audio data is being written to HAL in here: ssize_t framesWritten = mNormalSi...

As a small experimental music piece I am attempting to program a song in standard C. The code outputs a raw PCM file which can be imported into Audacity. At the moment everything works as expected,...

I currently record audio using MediaRecorder to produce .m4a, .mp4, .acc and .3gp, and also visualize the output data of each recording with VisualizerView. Now I would like to do the same thing...

I googled this issue for last 2 weeks and wasn't able to find an algorithm or solution. I have some short .wav file but it has MULAW compression and python doesn't seem to have function inside wave...

I'm using FMOD to develop an application which would immediately start playing the recording of the next/previous sentence exactly from its beginning in a MP3 file which contains speech, without mu...

I have a small app that accepts incoming audio stream from the internet and I'm trying to find the frequency of a tone or continuous beep. At the time of the tone / beep it is the only thing that w...

I have a stream of u-Law compressed PCM data I am extracting from a Camera, I need to play this out the speakers? Anybody know how? I've tried decoding the u-Law into normal WAV Data and then use S...

I am a beginner in working with sound processing and AVAudioEngine in iOS, and I'm developing an application that captures the audio samples as a buffer and analyzes it. Furthermore, the sample rat...

I have an audio file which is stereo. Is converting it to mono just a case of skipping every other byte (after the header)? It's encoded in 16bit signed PCM format. I've got javax.sound.sampled ava...

I have tried to convert pcm files to wav, but keep getting a FAIL format error, no matter how many (or few) options I try. I am wondering what I need to do to get the file handler for pcm files. In...

I am writing an app to manipulate audio where i need to convert a file (wav, MP3, etc) to raw data (samples are presented as float) at the first place. I use ffmpeg in cmd: ffmpeg -i test.wav -f...

I'm currently using ffmpeg to convert FLV/Speex to WAV/pcm_s16le, successfully. However, I now need the output format to be RAW, that is, PCM signed 16-bit little endian, without the WAV head...

I'm developing an application in c to read simple PCM WAV files. My question is, how should I interpret the samples from the data chunk, so that I can extract the sample's frequency? Given a WAV e...

I want to exchange 16kHz pcm --> 48kHz wav using sox. however, pcm file isn't applied in sox. so, I just changed pcm to raw, and then sox -r 16000 -e signed -b 16 -c 1 test.raw -r 48000 out.wav ...