pcm

i use eclipse with android sdk 4.0.3 api lvl 15 to create a basic music player application. I read and found that there are two main classes to play sounds. MediaPlayer and SoundPool. SoundPool has more flexibility regarding sound priority and rate of played sound. I would also like to draw a visualization graph of the audio. is there a way to get raw PCM data from the loaded audio asset in order for me to be able to draw the graph ? is there a way to manipulate the raw data before it's being played on realtime? for example if i want to add real time effects. is that possible with these

EDIT: I've updated the code below to resemble the progress I have made. I'm trying to write the .wav header myself. The code does not work properly as of now, the audio is not being written to the file properly. The code does not contain any attempts to convert it to a .flac file yet. I am using a Raspberry Pi ( Debian Linux ) to record audio with the ALSA library . The recording works fine, but I need to encode the input audio into the FLAC codec. This is where I get lost. I have spent a considerable amount of time trying to figure out how to convert this raw data into FLAC , but I keep

I have raw-headerless wav audio data as MemoryStream s. Stream rawAudioStream = Producer.GetRawAudioFileStream(...); I know those streams data format: // WaveFormat(int rate, int bits, int channels); WaveFormat waveformat = new WaveFormat(8000, 16, 1); What I want is to add programmatically right header info for those memory streams without writing them to a physical file. How can I do that? PS: I checked the NAudio Library but only found a way to create a header by writing streams to really-physical files which is not suitable for my situation . var waveformat = new WaveFormat(8000,16,1); var

I have a pcm file, and I want to convert it to a wav file. Is there any suitable api or code for this? devflow it's My Code /** * Write PCM data as WAV file * @param os Stream to save file to * @param pcmdata 8 bit PCMData * @param srate Sample rate - 8000, 16000, etc. * @param channel Number of channels - Mono = 1, Stereo = 2, etc.. * @param format Number of bits per sample (16 here) * @throws IOException */ public void PCMtoFile(OutputStream os, short[] pcmdata, int srate, int channel, int format) throws IOException { byte[] header = new byte[44]; byte[] data = get16BitPcm(pcmdata); long