I want to compress my audio file in matlab. I have done it with dct transform but it is not giving me proper results  and it only shows the results of original file and last compressed file not showing the results of compression factor 2 , compression factor 4.

I also want to know where the values of compressed audio file is saved after compression, anyone who knows please respond.

Anyone who has any code or link for compression of audio file in matlab, please share it here it need it for my work

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