/// <summary>
///
/// </summary>
/// <param name="wavInfo"></param>
/// <returns></returns>
public static double CalculateMaximumAmplitude(WavInfo wavInfo)
{
// Max expects at least 1 item in array.
if (wavInfo.Samples.Length > 0)
{
return(wavInfo.Samples.Max());
}
return(0);
}
/// <summary>
/// Subsamples audio.
/// </summary>
/// <param name="interval">
/// Keeps every <paramref name="interval"/> sample.
/// </param>
/// <param name="wavInfo">Wav info.</param>
public static WavInfo SubSample(WavInfo wavInfo, int interval)
{
if (interval <= 1)
{
// no changes required.
return(wavInfo);
}
int length = wavInfo.Samples.Length;
int newLength = length / interval;
double[] newSamples = new double[newLength];
//want length to be exact mulitple of interval
length = newLength * interval;
// copy only required samples
for (int i = 0; i < newLength; i++)
{
newSamples[i] = wavInfo.Samples[i * interval];
}
return(new WavInfo(newSamples, wavInfo.Channels, wavInfo.BitsPerSample, wavInfo.SampleRate / interval));
}
