Abstract
Objective and subjective evaluations of SPAC(Speech Processing system by use of Auto-Correlation function) in improving the quality of speech corrupted by additive white noise have shown a fairly good improvement in overall speech quality. The primary objective of this work is to verify quantitatively the subjective speech-to-noise-ratio (SNR) improvement achieved by SPAC. A pair comparison test was conducted to evaluate the SNR improvements for speech signal degraded by additive white noise and coding noise of a low bit-rate ADM codec by comparing to additive and multiplicative noise reference signals respectively. Experimental result shows that SPAC provides the statistically significant SNR improvement for both additive noise and coding noise of ADM at the low quality range. The improvement reaches about 6 dB for -5 dB SNR input having additive noise and about 13 dB for 6.7 kHz ADM which is equivalent to the speech signal of about 0 dB SNR having multiplicative noise.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
