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http://dx.doi.org/10.7776/ASK.2006.25.6.282

A Very Low-Bit-Rate Analysis-by-Synthesis Speech Coder Using Zinc Function Excitation  

Seo Sang-Won (충북대학교 전파공학과)
Kim Jong-Hak (충북대학교 전파공학과)
Lee Chang-Hwan (충북대학교 전파공학과)
Jeong Gyu-Hyeok (충북대학교 전파공학과)
Lee In-Sung (충북대학교 전파공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.25, no.6, 2006 , pp. 282-290 More about this Journal
Abstract
This paper proposes a new Digital Reverberator that models Analog Helical Coil Spring Reverberator for guitar amplifiers. While the conventional digital reverberators are proposed to provide better sound field mainly based on room acoustics, no algorithm or analysis of digital reverberators those model Helical Coil Spring Reverberator was proposed. Considering the fact that approximately $70{\sim}80$ percent of guitar amplifiers are still with Helical Coil Spring Reverberator, research was performed based not on Room Acoustics but on Helical Coil Spring Reverberator itself as an effector. After performing simulations with proposed algorithm, it was confirmed that the Digital Reverberator by proposed algorithm provides perceptually equivalent response to the conventional Analog Helical Coil Spring Reverberators.
Keywords
Very low bit rate speech coder; Zinc function; CELP; Prototype waveform; Analysis by sytnthesis structure;
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