channel samples into array from WaveStream
I've been struggling with this for quite some time now and I couldn't find a working solution.
I have a wav file (16 bit PCM: 44kHz 2 channels) and I want to extract samples into two arrays for each of the two channels. As far as I know the direct method for this does not exist in NAudio library, so I tried to run the following code to read a few of interlaced samples but the buffer array stays empty (just a bunch of zeros):
using (WaveFileReader pcm = new WaveFileReader(@"file.wav"))
{
byte[] buffer = new byte[10000];
using (WaveStream aligned = new BlockAlignReductionStream(pcm))
{
aligned.Read(buffer, 0, 10000);
}
}
Any help on this will be much appreciated.
BlockAlignReductionStream is unnecessary. Here's one simple way to read out of your buffer and into separate 16 bit left and right sample buffers.
using (WaveFileReader pcm = new WaveFileReader(@"file.wav"))
{
int samplesDesired = 5000;
byte[] buffer = new byte[samplesDesired * 4];
short[] left = new short[samplesDesired];
short[] right = new short[samplesDesired];
int bytesRead = pcm.Read(buffer, 0, 10000);
int index = 0;
for(int sample = 0; sample < bytesRead/4; sample++)
{
left[sample] = BitConverter.ToInt16(buffer, index);
index += 2;
right[sample] = BitConverter.ToInt16(buffer, index);
index += 2;
}
}
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