[VB.NET] Nearest Neighbor Algorithm compare audio two audio files exemple

I was looking for something related to manual recognition of two files per wave to identify something spoken, I found Nearest Neighbor Algorithm that takes something like that. i want to create my own voice recognizer on file. Well the idea is to do the following:

Compare the audio spoken in a wav or mp3 file with the audio in another file and then say if it is close or similar to the audio in file one with file two.

But I didn't find any example of Nearest Neighbor Algorithm with visual basic for simple purchases of photos, audios, bits, or numbers. While searching google engines, bing duckgo , search. I didn't find anything relevant related to bits or audio, Does anyone have deep understanding or a link that can help me about or an idea to do this otherwise without speech or voice recognition.

My goal with this is to get better results, even when a person speaks softly or with a changed voice where I can customize manually so VoiceRecognition is not useful for me to work on this project.
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