RELATIVE EXCITATION FEATURES FOR SPEECH RECOGNITION

摘要

Relative Excitation Features, in all conditions, are far superior to conventional acoustic features like Mel-Frequency Cepstrum (MFC) and Perceptual Linear Prediction (PLP), and provide much more speaker-independence, channel-independence, and noise-immunity. Relative Excitation features are radically different than conventional acoustic features. Relative Excitation method doesn't try to model the speech-production or vocal tract shape, doesn't try to do deconvolution, and doesn't utilize LP (Linear Prediction) and Cepstrum techniques. This new feature set is completely related to human hearing. The present invention is inspired by the fact that human auditory perception analyzes and tracks the relations between spectral frequency component amplitudes and the “Relative Excitation” name implies relative excitation levels of human auditory neurons. Described herein is a major breakthrough for explaining and simulating the human auditory perception and its robustness.

主权项

1. A method for extracting acoustic features, comprising:
estimating spectral component amplitudes of an acoustic signal; and computing coefficients by utilizing an amplitude comparator function, wherein the coefficients are the quantitative measures of the relationship between the amplitudes of the spectral components that are being compared.