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I record the sound of on iPhone using AvAudioRecorder (xamarin). How convert audio file to .FLAC format using C# (for google speech api) ?

Artem Polishchuk
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  • AFAIK there is no built in way to do this. You'll have to use some third party library or write the code to do it yourself. – Jason Jun 05 '14 at 16:53
  • Also related http://stackoverflow.com/questions/9733064/how-to-convert-the-wav-ogg-file-to-flac-file-in-android – Nikolay Shmyrev Oct 25 '16 at 16:50

2 Answers2

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There isn't a C# wav-to-flac converter right now.

You could simply use FLACiOS with wav-to-flac files embedded into a project in xcode.

Then use native binding of 

public partial class NativeMethods 
{
    [DllImport("__Internal", 
        EntryPoint="convertWavToFlac", 
        CallingConvention = CallingConvention.Cdecl)]
    public static extern int FlacEncode(
        [MarshalAs(UnmanagedType.LPStr)] string wav_file, 
        [MarshalAs(UnmanagedType.LPStr)] string flac_file) ;

}

and just use bound native method to convert your wav to flac.

Maxim V. Pavlov
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0

There are number of open source C# managed encoders, please check FlacBox or C# Flake. See also Discussion on the latter

Nikolay Shmyrev
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