The Effect Chirp Term In Audio Compression Using A Gammachirp Wavelet

摘要：

In this paper, we present a new design of a psychoacoustic model following the example model used in audio standard MPEG-1 layer 3 with the Gammachirp wavelet packet decomposition. The essential characteristic of this model is that it proposes an analysis by wavelet packet transformation on the frequency bands that come closer the critical bands of the ear that differs from the existing model based on an analysis by a shortterm Fourier transformation. This study shows the best performance of the Gammachirp coder using the highest chirp term.

关键词： Psycho-acoustic model FFT Wavelet Packet Decomposition Gammachirp Chirp term

作者: Khalil Abid Kais Ouni Nouredinne Ellouze

作者单位: Laboratory of Systems and Signal Processing (LSTS), National Engineering School of Tunis ENIT, BP 37, Le Belvédère 1002, Tunis, Tunisia

会议类型: 国际会议

会议名称: 2009 IEEE International Conference on Network Infrastructure and Digital Content(2009年IEEE网络基础设施与数字内容国际会议 IEEE IC-NIDC2009)

会议地点: 北京

会议语种:英文

页码: 774-778

在线出版日期: 2009-11-06（万方平台首次上网日期，不代表论文的发表时间）