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Audio compression and decompression - MATLAB & …
https://www.mathworks.com/matlabcentral/answers/385045-audio-compression-and-decompression
Suppose you are to compress by 74%. Then fft () and extract and retain (100-74) = 26% of the fft coefficients. You will have removed 74% of the information, so that will be compression. To reconstruct the signal, know the original number of samples, and create a vector of zeros that long, and write the saved coefficients into that vector in the ...
Audio Compression using Wavelets in MATLAB | Haar …
https://www.electronicsforu.com/electronics-projects/audio-compression-haar-wavelet-matlab
MATLAB is one of the best signal analysis and signal processing tools. Audio compression is a very good example of speech and signal processing. We use the Internet for various purposes including entertainment. Audio is common in all entertainment applications. If an audio file size is large, it takes more space to store.
Audio Compression Using Matlab Project Code ~ Matlab ...
https://matlabprojectcodes.blogspot.com/2019/03/audio-compression-using-matlab-project.html
Audio Compression Using Matlab Project Code. ... speech into an efficiently encoded format that can later be decoded to produce a close approximation of the original signal. The merits of the compression technique are reduction in storage space, bandwidth, transmission power and energy. An efficient algorithm Discrete Wavelet Transform (DWT) is ...
DCT for Speech Signal Compression - MATLAB & Simulink
https://www.mathworks.com/help/signal/ug/dct-for-speech-signal-compression.html
DCT for Speech Signal Compression. Open Live Script. This example shows how to compress a speech signal using the discrete cosine transform (DCT). Load a file containing the word "strong," spoken by a woman and by a man. The signals are sampled at 8 kHz. ... Run the command by entering it in the MATLAB Command Window.
Dynamic range compressor - MATLAB
https://www.mathworks.com/help/audio/ref/compressor-system-object.html
Compare Limiter and Compressor Applied to Audio Signal. Compare the effect of dynamic range limiters and compressors on a drum track. Create a dsp.AudioFileReader System object and a audioDeviceWriter System object to read audio from a file and write to your audio output device. To emphasize the effect of dynamic range control, set the operational threshold of the limiter …
Audio compression using DCT - MATLAB & Simulink
https://www.mathworks.com/matlabcentral/answers/615013-audio-compression-using-dct
Likewise your later code overwrites all of frame1. X=dct (y,32768); Your y is a vector so your X is a vector. A=idct (X,32768); Your X is a vector so your A is a vector. [rows,columns]= size (A) extra = rows*ceil (numel (A)/rows) - numel (A); That is a waste of code. numel (A) is always going to be exactly divisible by rows unless rows is 0, so ...
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