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Analysis of the Reconstruction of Sparse Signals in the ...
https://ieeexplore.ieee.org/document/8327444#:~:text=The%20discrete%20cosine%20transform%20%28DCT%29%20can%20provide%20highly,signal%20processing%20using%20the%20CS%20theory%20and%20methods.
Audio Compression using DCT & CS - IJERT
https://www.ijert.org/research/audio-compression-using-dct-cs-IJERTV4IS010061.pdf
study on compressed sensing of real, non-sparse, audio signals. With the help of spectral analysis and properties of the DCT, we can treat audio signals as sparse signals in the frequency domain. CS has been traditionally used to compress certain sparse images. DCT used as a signal preprocessor in order to
Audio Signal Compression using DCT and LPC Techniques
http://ijettjournal.org/2015/volume-21/number-5/IJETT-V21P247.pdf
Inside the loop take dct () of the input and compressed signal i.e convert the signal in form of frequencies. Then get the signal back by applying the idct () and plot the audio signals also plot the portion of audio signals as expanded view and plot the spectrogram of audio signal save to wave file and play the files.
DCT-compressive Sampling of Frequency- sparse …
http://www.iaeng.org/publication/WCE2011/WCE2011_pp1553-1556.pdf
Abstract—The discrete cosine transform (DCT) and the compressive sampling (CS) are two signal processing techniques with many applications on a great number of engineering fields. In this paper, we propose to apply both techniques to the compression of audio signals.
Steganography in Audio Signals using Variable Bit ...
https://www.ijert.org/research/steganography-in-audio-signals-using-variable-bit-replacement-method-in-dct-domain-IJERTV3IS041231.pdf
reducing the size of the signal without reducing the quality of . the signal. Since we are working on audio signals here, we focus on the DCT of a 1-D sequence, especially DCT-II and its respective inverse, IDCT-II.Following are the definitions of the DCT-IIand IDCT-II [15]: A. DCT-II G= ( G) ( G)cos 𝜋2 J−1 G−1 2 , G=1
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