An efficient masking model for audio coding exploiting spectro‐temporal masking

2008 ◽  
Vol 123 (5) ◽  
pp. 3162-3162
Author(s):  
Steven Van De Par ◽  
Jeroen Koppens ◽  
Armin Kohlrausch ◽  
Werner Oomen
Keyword(s):  
Audio Coding ◽  
Temporal Masking

scholarly journals Efficiently Synchronized Spread-Spectrum Audio Watermarking with Improved Psychoacoustic Model

2008 ◽  
Vol 2008 ◽  
pp. 1-5 ◽  
Author(s):  
Xing He ◽  
Michael S. Scordilis
Keyword(s):  
Spread Spectrum ◽  
Wavelet Packet ◽  
Audio Watermarking ◽  
Discrete Wavelet ◽  
Digital Audio ◽  
Discrete Wavelet Packet Transform ◽  
Time Frequency ◽  
Psychoacoustic Model ◽  
Temporal Masking ◽  
Watermarking Scheme

This paper presents an audio watermarking scheme which is based on an efficiently synchronized spread-spectrum technique and a new psychoacoustic model computed using the discrete wavelet packet transform. The psychoacoustic model takes advantage of the multiresolution analysis of a wavelet transform, which closely approximates the standard critical band partition. The goal of this model is to include an accurate time-frequency analysis and to calculate both the frequency and temporal masking thresholds directly in the wavelet domain. Experimental results show that this watermarking scheme can successfully embed watermarks into digital audio without introducing audible distortion. Several common watermark attacks were applied and the results indicate that the method is very robust to those attacks.

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