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Audio Signal Compression using DCT and LPC Techniques
http://ijettjournal.org/2015/volume-21/number-5/IJETT-V21P247.pdf#:~:text=Discrete%20Cosine%20Transform%20can%20be%20used%20for%20audio,in%20effective%20reduction%20of%20data.%20used%20in%20DCT.
Audio compression using DCT - MATLAB & Simulink
https://www.mathworks.com/matlabcentral/answers/615013-audio-compression-using-dct
frame=y ( [ (framesize* (i-1)+1):framesize*i]); end. end. You overwrite all of frame in each iteration. If that is your intention, you might as well do only the last iteration, i=M. 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);
A simple code for Audio Compression using DCT - File ...
https://www.mathworks.com/matlabcentral/fileexchange/69263-a-simple-code-for-audio-compression-using-dct/
A simple code for Audio Compression using DCT version 1.0.0 (118 KB) by Majid Farzaneh A simple code for Audio Compression using Discrete Cosine Transform (DCT) and evaluating by psnr, mse
DCT for Speech Signal Compression - MATLAB & Simulink
https://www.mathworks.com/help/signal/ug/dct-for-speech-signal-compression.html
y = him'; Y = dct (y); [YY,ind] = sort (abs (Y), 'descend' ); need = 1; while norm (Y (ind (1:need)))/norm (Y)<0.999 need = need+1; end ypc = need/length (Y)*100; Set the rest of the coefficients to zero and reconstruct the signal from the compressed version.
MATLAB: Audio compression using DCT – iTecTec
https://itectec.com/matlab/matlab-audio-compression-using-dct/
y is your original signal, of whatever size it is. You took a 32768 point dct to build X and Mu comes out the same as X, so MU is going to be a vector of length 32768. And it happens that both y and Mu are column vectors. But they are different lengths, y being the original size and MU being the 32768 length. You have a subtraction problem.
Audio compression using DCT - MATLAB & Simulink
https://www.mathworks.com/matlabcentral/answers/398982-audio-compression-using-dct-but-i-get-same-size-of-files-after-inverse-dct
Audio compression using DCT - but i get same size of files after inverse DCT. Hi I have a file ( 1.wav) - I'm trying to compress the first two seconds for this audio by using Discrete cosine transform . I attached the code , but when i use the command ( whos ) for the original samples and reconstructed samples after inverse DCT i get the same ...
Audio Compression Based on Discrete Cosine Transform, Run ...
https://www.ijeit.com/Vol%204/Issue%201/IJEIT1412201407_08.pdf
a simple discrete wavelet transform & DCT based audio compression scheme. It was implemented using MATLAB, the experimental results indicated that in general there is improvement in compression factor and signal to noise ratio with DWT based technique [8]. In this paper we introduce a
help needed::audio compression (DCT) using matlab | Forum ...
https://www.edaboard.com/threads/help-needed-audio-compression-dct-using-matlab.82129/
audio compression matlab hi all, i have been given an assignment, to write matlab code for an audio file compression using DCT but using no inbuilt functions available in matlab. After taking DCT, i have to explicitly state and give reasons for how many samples have been sent for compression and how many discarded.
Audio Compression using DCT & CS - IJERT
https://www.ijert.org/research/audio-compression-using-dct-cs-IJERTV4IS010061.pdf
signal but we prefer DCT. If we use FFT or DWT for getting sparse signal then this representation has real and complex parts, which result in a difficult reconstruction due to the phase angle changes . III. BLOCK DIAGRAM OF AUDIO COMPRESSION SYSTEM . Figure.2 shows that Block Diagram of Audio Compression using DCT and CS.
Technology World: AUDIO COMPRESSION IN MATLAB
https://techiworld4u.blogspot.com/2011/12/audio-compression-in-matlab_09.html
This discrete cosine Transform Audio Compression is performed in MATLAB. It takes a wave file as input, compress it to different levels and assess the output that is each compressed wave file. The difference in their frequency spectra will be viewed to assess how different levels of compression affect the audio signals.
2-DCT Image compression - MATLAB & Simulink
https://www.mathworks.com/matlabcentral/answers/427708-2-dct-image-compression
I tried implementing Discrete Cosine Transformation compression using matlab. Input image would a jpg image (Lena) having a size 512 X 512. There are two stages namely compression and decompression.
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