A hardware implementation of a new narrow to medium band speech coding

Fumitada Itakura; Tsutomu Kobayashi; Masaaki Honda

doi:10.1109/ICASSP.1982.1171426

A hardware implementation of a new narrow to medium band speech coding

Fumitada Itakura, Tsutomu Kobayashi, Masaaki Honda

Research output: Contribution to journal › Conference article › peer-review

18 Citations (Scopus)

Abstract

This paper will describes a digital speech signal processor(DSSP) designed for a narrow band and a medium band speech coding system, both of them are recently developed at the E.C.L., N.T.T.. The narrow band system is LSP(Line Spectrum Pair) vocoder, which is based on the frequency domain representation of LPC parameters. The LSP parameters are superior to conventional LPC parameters in view of its quantization and interpolation properties. The medium band system is a split band adaptive predictive coding with adaptive bit-allocation, APC-AB. This system can achieve a toll quality coding at 16 Kbit/s. We have made an extensive software simulation of LSP and APC-AB, and decided the specification of the DSSP. The DSSP can handle arithmetic and shifting operations in both 12 and 24 bit mode. Multiplications are done by a 12- by-12 parallel multiplier. Multiplier, ALU and shifters can operate concurrently in a pipeline mode at the minimum interval of 0.5 μs per multiplication-accumulation.

Original language	English
Article number	1171426
Pages (from-to)	1964-1967
Number of pages	4
Journal	ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume	1982-May
DOIs	https://doi.org/10.1109/ICASSP.1982.1171426
Publication status	Published - 1982
Externally published	Yes
Event	1982 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1982 - Paris, France Duration: 1982 May 3 → 1982 May 5

ASJC Scopus subject areas

Software
Signal Processing
Electrical and Electronic Engineering

Access to Document

10.1109/ICASSP.1982.1171426

Cite this

@article{933b52c5620f4c6abafb33ac7f1f850e,

title = "A hardware implementation of a new narrow to medium band speech coding",

abstract = "This paper will describes a digital speech signal processor(DSSP) designed for a narrow band and a medium band speech coding system, both of them are recently developed at the E.C.L., N.T.T.. The narrow band system is LSP(Line Spectrum Pair) vocoder, which is based on the frequency domain representation of LPC parameters. The LSP parameters are superior to conventional LPC parameters in view of its quantization and interpolation properties. The medium band system is a split band adaptive predictive coding with adaptive bit-allocation, APC-AB. This system can achieve a toll quality coding at 16 Kbit/s. We have made an extensive software simulation of LSP and APC-AB, and decided the specification of the DSSP. The DSSP can handle arithmetic and shifting operations in both 12 and 24 bit mode. Multiplications are done by a 12- by-12 parallel multiplier. Multiplier, ALU and shifters can operate concurrently in a pipeline mode at the minimum interval of 0.5 μs per multiplication-accumulation.",

author = "Fumitada Itakura and Tsutomu Kobayashi and Masaaki Honda",

note = "Publisher Copyright: {\textcopyright} 1982 IEEE.; 1982 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1982 ; Conference date: 03-05-1982 Through 05-05-1982",

year = "1982",

doi = "10.1109/ICASSP.1982.1171426",

language = "English",

volume = "1982-May",

pages = "1964--1967",

journal = "ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings",

issn = "1520-6149",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - A hardware implementation of a new narrow to medium band speech coding

AU - Itakura, Fumitada

AU - Kobayashi, Tsutomu

AU - Honda, Masaaki

PY - 1982

Y1 - 1982

N2 - This paper will describes a digital speech signal processor(DSSP) designed for a narrow band and a medium band speech coding system, both of them are recently developed at the E.C.L., N.T.T.. The narrow band system is LSP(Line Spectrum Pair) vocoder, which is based on the frequency domain representation of LPC parameters. The LSP parameters are superior to conventional LPC parameters in view of its quantization and interpolation properties. The medium band system is a split band adaptive predictive coding with adaptive bit-allocation, APC-AB. This system can achieve a toll quality coding at 16 Kbit/s. We have made an extensive software simulation of LSP and APC-AB, and decided the specification of the DSSP. The DSSP can handle arithmetic and shifting operations in both 12 and 24 bit mode. Multiplications are done by a 12- by-12 parallel multiplier. Multiplier, ALU and shifters can operate concurrently in a pipeline mode at the minimum interval of 0.5 μs per multiplication-accumulation.

AB - This paper will describes a digital speech signal processor(DSSP) designed for a narrow band and a medium band speech coding system, both of them are recently developed at the E.C.L., N.T.T.. The narrow band system is LSP(Line Spectrum Pair) vocoder, which is based on the frequency domain representation of LPC parameters. The LSP parameters are superior to conventional LPC parameters in view of its quantization and interpolation properties. The medium band system is a split band adaptive predictive coding with adaptive bit-allocation, APC-AB. This system can achieve a toll quality coding at 16 Kbit/s. We have made an extensive software simulation of LSP and APC-AB, and decided the specification of the DSSP. The DSSP can handle arithmetic and shifting operations in both 12 and 24 bit mode. Multiplications are done by a 12- by-12 parallel multiplier. Multiplier, ALU and shifters can operate concurrently in a pipeline mode at the minimum interval of 0.5 μs per multiplication-accumulation.

UR - http://www.scopus.com/inward/record.url?scp=85024310638&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85024310638&partnerID=8YFLogxK

U2 - 10.1109/ICASSP.1982.1171426

DO - 10.1109/ICASSP.1982.1171426

M3 - Conference article

AN - SCOPUS:85024310638

SN - 1520-6149

VL - 1982-May

SP - 1964

EP - 1967

JO - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

JF - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

M1 - 1171426

T2 - 1982 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1982

Y2 - 3 May 1982 through 5 May 1982

ER -

A hardware implementation of a new narrow to medium band speech coding

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this