How to merge two wav files into one using OpenTK?

Question

Audio

We need to mix two wav files into one in .net core. To do this, I use the OpenTK OpenAl wrapper for C#.
1) I load wav like in this example
2) I create two byte[] arrays:

var sound_data1 = LoadWave(path1, FileMode.Open), out channels, out bits_per_sample, out sample_rate);

var sound_data2 = LoadWave(path2, FileMode.Open), out channels, out bits_per_sample, out sample_rate);

3) I write the averaged sum of bytes to the result_sound_data array:

for (int i = 0; i < sound_data1; i++)
{
result_sound_data[i] = (byte)((sound_data1[i] + sound_data2[i]) / 2);
}

4) Then I play result_sound_data

AL.BufferData(buffer, GetSoundFormat(channels, bits_per_sample), result_sound_data, result_sound_data.Length, sample_rate);

AL.Source(source, ALSourcei.Buffer, buffer);
AL.SourcePlay(source);

The output is a "hissing" "broken" signal. How to merge two wav files?

Answer 1

https://www.codeproject.com/Articles/29676/CWave-A...
well, as I understand it, you can't just take two files and send the average data to another array ..
headers. number of channels, sample rate.
that is, your version of "banal" gluing will work in fact only for "same-type" files. Yes, and probably the same length.