TY - GEN
T1 - A hybrid warped linear prediction (WLP) AAC audio coding algorithm
AU - Lee, Jaseong
AU - Park, Young Cheol
AU - Youn, Dae Hee
AU - Kang, Hong Goo
PY - 2007
Y1 - 2007
N2 - We propose a hybrid warped linear prediction (WLP) AAC audio coding algorithm. The proposed algorithm employs a warped linear prediction processor to construct a perceptual pre and post-filter for the MPEG-4 AAC. The WLP residue is applied to the MDCT filter-bank and the signal to mask ratio of the corresponding block is modified to set a masking threshold for the WLP residues. In the decoder, the reconstructed residual signal is through a modified WLP synthesis filter to restore the audio signal. Subjective tests show that the proposed audio codec operating at 50kbps has comparable perceptual quality to the conventional MPEG-4 AAC operating at the 58kbps.
AB - We propose a hybrid warped linear prediction (WLP) AAC audio coding algorithm. The proposed algorithm employs a warped linear prediction processor to construct a perceptual pre and post-filter for the MPEG-4 AAC. The WLP residue is applied to the MDCT filter-bank and the signal to mask ratio of the corresponding block is modified to set a masking threshold for the WLP residues. In the decoder, the reconstructed residual signal is through a modified WLP synthesis filter to restore the audio signal. Subjective tests show that the proposed audio codec operating at 50kbps has comparable perceptual quality to the conventional MPEG-4 AAC operating at the 58kbps.
UR - http://www.scopus.com/inward/record.url?scp=84866492648&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866492648&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84866492648
SN - 9781604231403
T3 - Audio Engineering Society - 122nd Audio Engineering Society Convention 2007
SP - 678
EP - 684
BT - Audio Engineering Society - 122nd Audio Engineering Society Convention 2007
T2 - 122nd Audio Engineering Society Convention 2007
Y2 - 5 May 2007 through 8 May 2007
ER -