An improved regular-pulse-excitation/long- term-prediction speech coding scheme

Shenghui Zhao; Jingming Kuang; Botao Liu

An improved regular-pulse-excitation/long- term-prediction speech coding scheme

Shenghui Zhao^*, Jingming Kuang, Botao Liu

^*Corresponding author for this work

Beging Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

On the base of the study of Regular-Pulse-Excitation/Long-Term-Prediction (RPE-LTP) speech coding scheme (the bit rate is 13 kbit/s) an improved scheme with the bit rate of 7.4 kbit/s is described which greatly reduces the coding rate. In the improved scheme a partially searching method is used instead of the original one in LTP analysis, and vector quantization is applied to quantize the residual signal of the prediction. Its hardware implementation is done on TMS320C30 EVM with a single DSP chip TMS320C30. The experimental results show that the synthesized speech quality of the improved scheme is close to that of the original one.

Original language	English
Pages (from-to)	199-204
Number of pages	6
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	15
Issue number	2
Publication status	Published - 1995
Externally published	Yes

Keywords

Vector quantization hardware implementation
Voice coding/regular-pulse-excitation/long-term-prediction

Cite this

@article{433b0d059a4e4894bfad1e82944ed7b4,

title = "An improved regular-pulse-excitation/long- term-prediction speech coding scheme",

abstract = "On the base of the study of Regular-Pulse-Excitation/Long-Term-Prediction (RPE-LTP) speech coding scheme (the bit rate is 13 kbit/s) an improved scheme with the bit rate of 7.4 kbit/s is described which greatly reduces the coding rate. In the improved scheme a partially searching method is used instead of the original one in LTP analysis, and vector quantization is applied to quantize the residual signal of the prediction. Its hardware implementation is done on TMS320C30 EVM with a single DSP chip TMS320C30. The experimental results show that the synthesized speech quality of the improved scheme is close to that of the original one.",

keywords = "Vector quantization hardware implementation, Voice coding/regular-pulse-excitation/long-term-prediction",

author = "Shenghui Zhao and Jingming Kuang and Botao Liu",

year = "1995",

language = "English",

volume = "15",

pages = "199--204",

journal = "Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology",

issn = "1001-0645",

publisher = "Beijing Institute of Technology",

number = "2",

}

TY - JOUR

T1 - An improved regular-pulse-excitation/long- term-prediction speech coding scheme

AU - Zhao, Shenghui

AU - Kuang, Jingming

AU - Liu, Botao

PY - 1995

Y1 - 1995

N2 - On the base of the study of Regular-Pulse-Excitation/Long-Term-Prediction (RPE-LTP) speech coding scheme (the bit rate is 13 kbit/s) an improved scheme with the bit rate of 7.4 kbit/s is described which greatly reduces the coding rate. In the improved scheme a partially searching method is used instead of the original one in LTP analysis, and vector quantization is applied to quantize the residual signal of the prediction. Its hardware implementation is done on TMS320C30 EVM with a single DSP chip TMS320C30. The experimental results show that the synthesized speech quality of the improved scheme is close to that of the original one.

AB - On the base of the study of Regular-Pulse-Excitation/Long-Term-Prediction (RPE-LTP) speech coding scheme (the bit rate is 13 kbit/s) an improved scheme with the bit rate of 7.4 kbit/s is described which greatly reduces the coding rate. In the improved scheme a partially searching method is used instead of the original one in LTP analysis, and vector quantization is applied to quantize the residual signal of the prediction. Its hardware implementation is done on TMS320C30 EVM with a single DSP chip TMS320C30. The experimental results show that the synthesized speech quality of the improved scheme is close to that of the original one.

KW - Vector quantization hardware implementation

KW - Voice coding/regular-pulse-excitation/long-term-prediction

UR - http://www.scopus.com/inward/record.url?scp=71149112750&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:71149112750

SN - 1001-0645

VL - 15

SP - 199

EP - 204

JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

IS - 2

ER -

An improved regular-pulse-excitation/long- term-prediction speech coding scheme

Abstract

Keywords

Other files and links

Fingerprint

Cite this