How to export the generated waveform as an audio file?

[JossPabloPC]

Once I have my sequencer rendered, how can I tranform it to a Wav file ? I am using this example:

// Create the synthesizer.
var sampleRate = 44100;
var synthesizer = new Synthesizer("TimGM6mb.sf2", sampleRate);

// Read the MIDI file.
var midiFile = new MidiFile("flourish.mid");
var sequencer = new MidiFileSequencer(synthesizer);
sequencer.Play(midiFile, false);

// The output buffer.
var left = new float[(int)(sampleRate * midiFile.Length.TotalSeconds)];
var right = new float[(int)(sampleRate * midiFile.Length.TotalSeconds)];

// Render the waveform.
sequencer.Render(left, right);

[sinshu]

This is an example code to export the waveform as a WAV file. Note that you need NAudio to compile this code.

meltysynth/Workspace/Examples.cs

Line 153 in 092cf25

private static void WriteWaveFile(float[] left, float[] right, int sampleRate, string path)

[sinshu]

Your code looks fine. Could you share the MIDI file?

[JossPabloPC]

Sure, I am using various midi files. I am also adding the soundFont used. Github would allow me to upload them so I am sharing a drive link: [https://drive.google.com/drive/folders/14YxIxVj5sxeVD6pdWeadzVobiiki8KbC?usp=sharing]

[sinshu]

The combination of TimGM6mb.sf2 and A.mid worked in my environment 🤔
I don't know much about Unity, so it may be difficult to give further advice...

[JossPabloPC]

How strage, maybe is the .NET version Unity uses. Thank you so much for your help.

[CodeSmile-0000011110110111]

Note: when you create or modify a file, you don't refresh the entire AssetDatabase, scanning all (!) files for changes and unloading unused resources along the way.

You only need to call AssetDatabase.ImportAsset(fileThatWasModified)

[nickgal]

If you are using Unity, there is a SavWav gist (one of many forks) that can be used to add the wav header from an AudioClip and avoid adding all of NAudio.

sequencer.RenderInterleaved(buffer);

var clip = AudioClip.Create(trackName, lenSamples, channels, sampleRate, false);
clip.SetData(buffer, 0);

SavWav.Save(wavPath, clip);