The aim of this article is to show an efficient algorithm of signal processing which will allow one to have a competent system of sound fingerprinting and signal recognition. I'll try to come with some explanations of the article's algorithm, and also speak about how it can be implemented using the C# programming language. Additionally, I'll try to cover topics of digital signal processing that are used in the algorithm, thus you'll be able to get a clearer image of the entire system. And as a proof of concept, I'll show you how to develop a simple WPF MVVM application.
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// Sound Fingerprinting framework
// git://github.com/AddictedCS/soundfingerprinting.git
// Code license: CPOL v.1.02
// ciumac.sergiu@gmail.com
namespace Soundfingerprinting.AudioProxies.Strides
{
/// <summary>
/// Incremental stride
/// </summary>
public class IncrementalStaticStride : IStride
{
/// <summary>
/// Increment by parameter (usually negative)
/// </summary>
private readonly int _incrementBy;
private int _firstStride;
/// <summary>
/// Incremental stride constructor
/// </summary>
/// <param name = "incrementBy">Increment by parameter in audio samples</param>
/// <param name = "samplesInFingerprint">Number of samples in one fingerprint [normally 8192]</param>
public IncrementalStaticStride(int incrementBy, int samplesInFingerprint)
{
_incrementBy = -samplesInFingerprint + incrementBy; /*Negative stride will guarantee that the signal is incremented by the parameter specified*/
_firstStride = 0;
}
#region IStride Members
/// <summary>
/// Gets stride size
/// </summary>
/// <returns>Negative stride</returns>
public int GetStride()
{
return _incrementBy;
}
public int GetFirstStride()
{
return _firstStride;
}
#endregion
public void SetFirstStride(int firstStride)
{
_firstStride = firstStride;
}
}
}
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Interested in computer science, math, research, and everything that relates to innovation. Fan of agnostic programming, don't mind developing under any platform/framework if it explores interesting topics. In search of a better programming paradigm.