Natural quality two-band LPC coding of speech at 880 bit/s with frame interpolation
Woo-Jin Han, Eun-Kyoung Kim, Yung‐Hwan Oh · Electronics Letters · 2002
A novel frame interpolation technique for two-band linear predictive coding (LPC) vocoders is proposed for maintaining natural speech quality at bit rates below 1 kbit/s. Experimental results show that the speech quality of the proposed vocoder is quite natural at bit rates 880 bit/s and comparable to that of 4.8 kbit/s CELP.