Exploiting Excess Masking for Audio Compression
Ye Wang, Miikka Vilermo · 1999
In order to improve audio coding performance, excess masking has been employed for the compression of complex audio signals. A new algorithm is developed to classify and pre-process maskers. A psychoacoustic model is used to estimate simultaneous masking threshold. This masking threshold is used for quantizing audio signal coefficients in the frequency domain. Preliminary test results show improved coding efficiency.