用NAudio录音时，如何使声音变得更大？

var waveIn = new WaveInEvent();
waveIn.DataAvailable += OnDataAvailable;
waveIn.WaveFormat = new WaveFormat(44100, 1);
waveIn.StartRecording();

private void OnDataAvailable(object sender, WaveInEventArgs e)
{
    for (int i = 0; i < e.BytesRecorded; i += 2)
    {
        short sample = (short)((e.Buffer[i + 1] << 8) | e.Buffer[i + 0]);
        float sample32 = sample / 32768f;

        // Apply gain here
        sample32 *= gain;

        sample = (short)(sample32 * 32768f);
        e.Buffer[i + 0] = (byte)(sample & 0xFF);
        e.Buffer[i + 1] = (byte)(sample >> 8);
    }
}

var waveIn = new WaveInEvent();
waveIn.DataAvailable += OnDataAvailable;
waveIn.WaveFormat = new WaveFormat(44100, 1);
waveIn.StartRecording();

private void OnDataAvailable(object sender, WaveInEventArgs e)
{
    var compressor = new Compressor(e.Buffer.Length);
    compressor.Process(e.Buffer, e.BytesRecorded);

    // Process the compressed audio data
}