Resampling Audio With NAudio

Question

I would like to resample a IEEE floating point ISampleProvider at 44100Hz and get another ISampleProvider at 16000Hz, but I can't seem to get NAudio to do the conversion.

This is what I have tried so far.

var myReader = new AudioFileReader(filename);
var resampledAudio = new WaveToSampleProvider( 
                          new MediaFoundationResampler(
                               new SampleToWaveProvider(myReader),
                               new WaveFormat(16000, 2)){ ResamplerQuality = 60 });

When I run this code I get an ArgumentException with a message saying:

the input argument must already be floating point

Does anyone know how I can solve this issue?

Answer 1

You should solve your problem using this:

WaveFormat.CreateIeeeFloatWaveFormat(16000, 2);

Instead of:

new WaveFormat(16000, 2)