TY - GEN
T1 - DCT-compressive sampling of multifrequency sparse audio signals
AU - Moreno-Alvarado, R. G.
AU - Martinez-Garcia, Mauricio
AU - Nakano, Mariko
AU - Pérez, Héctor M.
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/2/12
Y1 - 2014/2/12
N2 - In this paper, we propose to apply the discrete cosine transform (DCT) and the compressive sampling (CS) techniques to audio signal compression. Using spectral analysis and the properties of the DCT, we can treat audio signals as sparse signals in the frequency domain. This is especially true for sounds representing tones. Thus, we propose the use of DCT as a preprocessor in order to sparsely represent a signal in the frequency domain, combined with CS to obtain an efficient representation of the signals. We show that the subsequent application of CS represents our signals with less information than the well-known sampling theorem.
AB - In this paper, we propose to apply the discrete cosine transform (DCT) and the compressive sampling (CS) techniques to audio signal compression. Using spectral analysis and the properties of the DCT, we can treat audio signals as sparse signals in the frequency domain. This is especially true for sounds representing tones. Thus, we propose the use of DCT as a preprocessor in order to sparsely represent a signal in the frequency domain, combined with CS to obtain an efficient representation of the signals. We show that the subsequent application of CS represents our signals with less information than the well-known sampling theorem.
KW - Audio signals
KW - Compression
KW - Compressive sampling
KW - Discrete Cosine Transform
KW - Frequency sparse
UR - http://www.scopus.com/inward/record.url?scp=84946691086&partnerID=8YFLogxK
U2 - 10.1109/LATINCOM.2014.7041859
DO - 10.1109/LATINCOM.2014.7041859
M3 - Contribución a la conferencia
AN - SCOPUS:84946691086
T3 - 2014 IEEE Latin-America Conference on Communications, IEEE LATINCOM 2014
BT - 2014 IEEE Latin-America Conference on Communications, IEEE LATINCOM 2014
A2 - Velasquez-Villada, Carlos E.
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th IEEE Latin-America Conference on Communications, IEEE LATINCOM 2014
Y2 - 5 November 2014 through 7 November 2014
ER -