Title :
Different Quantisation Noise Shaping Methods for Predictive Audio Coding
Author :
Wabnik, Stefan ; Schuller, Gerald ; Hirschfeld, Jens ; Kraemer, Ulrich
Author_Institution :
Fraunhofer Inst. for Digital Media Technol., Ilmenau
Abstract :
The paper presents a comparison of a previous and a new approach to shape quantization noise in low bit rate predictive audio coding. The previous approach uses an adaptation of the step size of a uniform quantizer, the new approach uses a quantizer with clipping. Both approaches are evaluated using a predictive audio coding scheme. The presented results of a listening test show the improved performance of the new approach
Keywords :
audio coding; data compression; predictive audio coding; quantisation noise shaping methods; Acoustic noise; Audio coding; Bit rate; Decoding; Delay; Frequency; Masking threshold; Noise shaping; Quantization; Testing;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1661243