Papers

Quality Improvement Using a Sinusoidal Model in HE-AAC

International Conference
2006~2010
작성자
한혜원
작성일
2007-10-01 23:27
조회
1517
Authors : Jeng-Geun Kim, Dong-il Hyun, Dae Hee Youn, Young-Cheol Park

Year : 2007

Publisher / Conference : 123th Convention of Audio Engineering Society

Page : 7292

This paper identifies a phenomenon that a signal is distorted because noise floor is generated when restoring a tone in HE-AAC, which does not exist in the original input signal; and to solve this matter, it suggests how to restore only the original tonal components in decoding by adding a sinusoidal model to the HE-AAC encoder. In this process, the sinusoidal model is used to analyze a tone and to move it to the place where noise floor is reduced. The lower the bit-rate is, the lower the frequency where the restoration by SBR(Spectral Band Replication) is started becomes, and in the lower frequency, the distortion phenomenon by noise inflow can be sensed easily; thus, the effect of improvement in the suggested method is greater, and it is beneficial that no additional information or operation in the decoding process is needed.
전체 363
27 International Conference Jeng-Geun Kim, Dong-il Hyun, Dae Hee Youn, Young-Cheol Park "Quality Improvement Using a Sinusoidal Model in HE-AAC" in 123th Convention of Audio Engineering Society, pp.7292, 2007
26 International Conference Min-Ki Lee, Kyung-Tae Kim, Hong-Goo Kang, Dae Hee Youn "Speech Quality Estimation Using Packet Loss Effects in CELP-Type Speech Coders" in INTERSPEECH, pp.1697-1700, 2007
25 International Conference Chang-Heon Lee, Hong-Goo Kang "Improvement of Artificial Onset Reconstruction in VMR-WB Standard under Packet-loss Environments" in ITC-CSCC, 2007
24 International Conference Sun-kuk Moon, Tack-sung Choi, Young-Cheol Park, Dae Hee Youn "An Efficient Feature Selection Algorithm Based on Kullback-Leibler Divergence for Music Information Retrieval" in ITC-CSCC, pp.524-525, 2007
23 International Conference Min-Ki Lee, Sung-Wan Youn, Kyung-Tae Kim, Hong-Goo Kang "Speech Quality Degradation in Packet Loss Environment at Specific Speech Class" in ITC-CSCC, pp.781-782, 2007
22 International Conference Chi-Sang Jung, Bong-Jin Lee, Jeung-Yoon Choi, Hong-Goo Kang "AN ADAPTIVE SELECTION OF FRAME SHIFT FOR SPEAKER RECOGNITION SYSTEMS" in The Second Beijing-Hong Kong International Doctoral Forum, 2007
21 International Conference Min-Seok Choi, Young-Cheol Park, Hong-Goo Kang "A Soft-Decision Adaptation Mode Controller for an Efficient Frequency-Domain Generalized Sidelobe Canceller" in ICASSP, 2007
20 International Conference Yoomi Hur, Young-Choel Park, Dae Hee Youn "A New Structure for Stereo Acoustic Echo Cancellation Based on Binaural Cue Coding" in 122th Convention of Audio Engineering Society, pp.7094, 2007
19 International Conference Yoomi Hur, Young-Choel Park, Dae Hee Youn "A New Structure for Stereo Acoustic Echo Cancellation Based on Binaural Cue Coding" in 122th Convention of Audio Engineering Society, pp.7094, 2007
18 International Conference Jaseong Lee, Young-Cheol Park, Dae Hee Youn, Hong-Goo Kang "A Hybrid Warped Linear Prediction (WLP) AAC Audio Coding Algorithm" in 122th Convention of Audio Engineering Society, pp.7002, 2007