Title :
Audio quality measurement by using digital watermarking
Author :
Cai, Libin ; Zhao, Jiying
Author_Institution :
Sch. of Inf. Technol. & Eng., Univ. of Ottawa, Ont., Canada
Abstract :
We present an objective audio quality measurement scheme by using semi-fragile digital audio watermarking. The scheme is based on the digital wavelet transform (DWT) and quantization. The original audio signal is not needed. The watermark is a PN-sequence generated from a secret key. We also discuss the optimization of the quantization step for different audio signals by employing an adaptive control method.
Keywords :
adaptive control; audio coding; cryptography; quantisation (signal); sequences; watermarking; wavelet transforms; PN-sequence; adaptive control; audio quality measurement; digital watermarking; digital wavelet transform; optimization; quantization; secret key; semi-fragile digital audio watermarking; Adaptive control; Additive noise; Discrete wavelet transforms; Distortion measurement; Filtering; Gaussian noise; Low pass filters; Object detection; Quantization; Watermarking;
Conference_Titel :
Electrical and Computer Engineering, 2004. Canadian Conference on
Print_ISBN :
0-7803-8253-6
DOI :
10.1109/CCECE.2004.1345326
