CODEWITHSUNDEEP
c#wavnaudio
Thawing
Thawing

Reputation: 11

Using NAudio how do I save Non-interlaced 32-bit float format to file

In C#, I am trying to save off PCM data to a WAV file. Using NAudio, I create a WaveFileWriter.

this.fileWriter = new WaveFileWriter(@"c:\temp\test.wav", new WaveFormat(this.audioParameters.SampleRate, this.channels));

I am capturing the PCM packet in a float array and write the samples.

var arraySize = noOfFrames * this.channels;
var buffer = new float[arraySize];
Marshal.Copy(data, buffer, 0, arraySize);
this.fileWriter?.WriteSamples(buffer, 0, buffer.Length);

The outputted audio file is of the proper length but the audio is sounds horrible. I can tell it is the same audio but it is not right.

// Non-interlaced 32-bit float format
// ChannelLayout = LayoutStereo
// FramesPerBuffer = 1024
// SampleRate = 44100
// channels = 2

In NAudio, how do I create a WAV file from a PCM stream with the above information?

Upvotes: 0

Views: 720

Answers (1)

Mark Heath
Mark Heath

Reputation: 49482

You are putting 32 bit floating point audio samples into a 16 bit WAV file. Use WaveFormat.CreateIeeeFloatWaveFormat(sampleRate, channels) for the WaveFormat of the WaveFileWriter.

Upvotes: 2

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