TY - GEN
T1 - Improvement of packet loss concealment for MP3 audio based on switching of concealment method and estimation of MDCT signs
AU - Ito, Akinori
AU - Konno, Kiyoshi
AU - Itot, Masashi
AU - Makino, Shozo
PY - 2010/12/28
Y1 - 2010/12/28
N2 - This paper describes packet loss concealment methods for MP3 audio. The proposed methods are based on estimation of modified discrete cosine transform (MDCT) coefficients of the lost packets. The estimation of MDCT coefficients of lower dimensions is performed by switching two concealment methods: the sign correction method and the correlation-based method. The concealment methods are switched based on redundant side information calculated subband-by-subband for reducing MDCT prediction errors. Next, a method for improving estimation of MDCT coefficients of higher dimensions was proposed. The method estimates the absolute value and sign of an MDCT coefficient independently. The subjective evaluation experiment proved that both of the improvement methods for lower and higher dimensions effectively improved the subjective audio quality.
AB - This paper describes packet loss concealment methods for MP3 audio. The proposed methods are based on estimation of modified discrete cosine transform (MDCT) coefficients of the lost packets. The estimation of MDCT coefficients of lower dimensions is performed by switching two concealment methods: the sign correction method and the correlation-based method. The concealment methods are switched based on redundant side information calculated subband-by-subband for reducing MDCT prediction errors. Next, a method for improving estimation of MDCT coefficients of higher dimensions was proposed. The method estimates the absolute value and sign of an MDCT coefficient independently. The subjective evaluation experiment proved that both of the improvement methods for lower and higher dimensions effectively improved the subjective audio quality.
KW - MDCT
KW - MP3
KW - Packet loss concealment
UR - http://www.scopus.com/inward/record.url?scp=78650506475&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650506475&partnerID=8YFLogxK
U2 - 10.1109/IIHMSP.2010.132
DO - 10.1109/IIHMSP.2010.132
M3 - Conference contribution
AN - SCOPUS:78650506475
SN - 9780769542225
T3 - Proceedings - 2010 6th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2010
SP - 518
EP - 521
BT - Proceedings - 2010 6th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2010
T2 - 6th International Conference on Intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2010
Y2 - 15 October 2010 through 17 October 2010
ER -