A Simple Perceptual Method for Quantizing Wavelet Packet Coefficients of Wideband Speech

摘要：

In this paper an efficient and low complexity perceptual method is proposed for quantizing the wavelet packet coefficients of high quality speech signals. The performance of the proposed method is compared, using the same codec, with the case where all coefficients are quantized using a fixed number of bits. The results on 500 TIMIT files show that this method based on some basic perceptual considerations achieves about 15-35％ reduction in the average bit-rates with almost the same or even better perceptual qualities.

关键词： wavelet packet transform perceptual quantization psychoacoustic properties wideband speech coding

作者: Omid Ghahabi M.H.Savoji

作者单位: Department of Electrical and Computer Engineering, Shahid Beheshti University Evin Sq., 1983963113, Department of Electrical and Computer Engineering, Shahid Beheshti University Evin Sq., 1983963113,

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 466-469

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）