Audio processing involves the study of mathematical and signal processing techniques to understand or alter the nature of audio signals. The different kind of audio signals under study include speech, music, environmental audio and computer audio. Audio is analyzed in the temporal or spectral domain by applying various filters.
Questions tagged [audio-processing]
473 questions
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What does "frame blocking" mean?
I'm curious about "frame blocking" which is the first step of feauture extraction as i saw in web site. It says that these steps should be follow for feature extraction of an audio:
frame blocking
windowing
fft
mel-frequency…
Cengaver
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Removal of Noise from a wav file when I have the original audio
So for university I'm supposed to remove noise from a audio file. I have the original audio file and the teacher added some noise on top of it and I'm supposed to get rid of it using python. We have learnt the concepts on basic signals but I'm…
nuub
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Why is my output different when the code is same?
I am currently putting together a band-pass filter using the following code: https://ipython-books.github.io/116-applying-digital-filters-to-speech-sounds/
I made few edits to the above code, namely the file is no longer pulled from an url but…
PaperRockBazooka
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How can i analysis the output of the three machine learning model so that i only get the one result?
I am trying to do genre based classification of the song.
I have extracted the audio features ( MFCC, Pitch, and Rhythm) for a song.
I trained the three model (ANN, SVM, SVM ) by each features. Three model give the three output (genre of the song).…
Someone
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How to get audio levels of an audio file extracted from a video file?
The frame rate of a given video is 24fps. For audio sampling rate equal to 44.1Khz and 22050 (Fs/2) samples of audio are present in every second of audio. i.e. for every video frame, 22050/24≈919 audio samples are present.
This is the matlab code I…
Animesh Pandey
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how to read an MP3 file for audio processing in Delphi?
When I want to process an audio in a byte level, I always convert it in .wav format and then do my processing. For example in my last project, I was trying to generate a kind of special waveform image of my audio file to use it in a video clip. Then…
Mohammad Ahmadzadeh
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Which developer roles or titles are needed to build a software DAW?
So far, I've used many different Audio Production software on Mac and Windows platforms. Often times, I ponder on the idea of creating my own DAW, but I realize that would be an extremely difficult challenge for a single person to undertake…
bigp
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plotting volume-time graph of .wav file
I'm trying to get volume-time graph of .wav file. First, I recorded sound (patient exhalations) via android as .wav file, but when I read this .wav file in MATLAB it has negative values. What is the meaning of negative values? Second, MATLAB experts…
fatima zubaidi
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