filter mp3s by average loudness in csharp

main.cs
using NAudio.Wave;
using NAudio.Wave.SampleProviders;

// Define the minimum and maximum loudness values to filter by
const float minLoudness = -25.0f;
const float maxLoudness = -10.0f;

// Define a function to calculate the average loudness of the audio
float GetAverageLoudness(string filePath)
{
    var reader = new Mp3FileReader(filePath);
    var sampleProvider = reader.ToSampleProvider();
    var sampleBuffer = new float[reader.WaveFormat.SampleRate * reader.WaveFormat.Channels];
    int samplesRead = 0;
    float sum = 0;

    while ((samplesRead = sampleProvider.Read(sampleBuffer, 0, sampleBuffer.Length)) > 0)
    {
        for (int i = 0; i < samplesRead; i++)
            sum += Math.Abs(sampleBuffer[i]);
    }

    var rms = (float)Math.Sqrt(sum / sampleProvider.WaveFormat.SampleRate);
    var db = 20 * (float)Math.Log10(rms / 1);

    return db;
}

// Define a function to filter MP3s by average loudness
List<string> FilterMp3sByLoudness(string[] filePaths)
{
    var filteredFilePaths = new List<string>();

    foreach (var filePath in filePaths)
    {
        var loudness = GetAverageLoudness(filePath);

        if (loudness >= minLoudness && loudness <= maxLoudness)
            filteredFilePaths.Add(filePath);
    }

    return filteredFilePaths;
}
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