在 .NET Core 中录制音频

问题描述

正如标题所暗示的，我希望从 .NET Core 中的麦克风捕获音频.对我来说重要的是它是跨平台的.我已经在 Windows、Linux 和 OSX 上的 OpenCV 中进行了大量视频处理.音频对我来说是一块缺失的拼图.

As the title suggests, I'm looking to capture audio from a microphone in .NET Core. It's important for me that it's cross platform. I'm doing a lot of video processing in OpenCV on Windows, Linux and OSX already. Audio is a missing piece of the puzzle for me.

推荐答案

OpenTK.NETCore 是一个非常好的 OpenTK 跨平台端口.

OpenTK.NETCore is a really good cross platform port for OpenTK.

使用它的 AudioCapture 类，我已经能够在不同的操作系统平台上捕获麦克风数据.

Using it's AudioCapture class I have been able to capture microphone data across different OS platforms.

using (var audioCapture = new AudioCapture(_recorders.First(), _sampling_rate, ALFormat.Mono16, buffer_length_samples))
{
    audioCapture.Start();

    int available_samples = audioCapture.AvailableSamples;

    _buffer = _pool.Rent(MathHelper.NextPowerOfTwo((int)((available_samples * _sampleToByte / (double)BlittableValueType.StrideOf(_buffer)) + 0.5)));

    if (available_samples > 0)
    {
        audioCapture.ReadSamples(_buffer, available_samples);
    }
    else
    {
        _pool.Return(_buffer);
    }
}

基于 OpenTK 示例中的 Parrot 项目.

Based on Parrot project in OpenTK samples.

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