Pitch quantization in low bit-rate speech coding

Thomas Eriksson, Hong Goo Kang

Research output: Contribution to journalConference article

9 Citations (Scopus)

Abstract

This paper describes a new pitch quantization method for low bit-rate speech coding systems. The logarithm of the pitch period is quantized in a combination of two uniform quantizers, one working directly on logarithmic pitch values and the other working on the difference between current and previous logarithmic pitch. The best of the two output values is transmitted to the receiver. This scheme can exploit both redundancy in the signal and properties of the ear to achieve an efficient quantization. Listening tests show that the proposed scheme allows the pitch parameter to be quantized using 4 bits, with no degradation in audible quality.

Original languageEnglish
Pages (from-to)489-492
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume1
Publication statusPublished - 1999 Jan 1

Fingerprint

Speech coding
Redundancy
Degradation

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

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Pitch quantization in low bit-rate speech coding. / Eriksson, Thomas; Kang, Hong Goo.

In: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, Vol. 1, 01.01.1999, p. 489-492.

Research output: Contribution to journalConference article

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N2 - This paper describes a new pitch quantization method for low bit-rate speech coding systems. The logarithm of the pitch period is quantized in a combination of two uniform quantizers, one working directly on logarithmic pitch values and the other working on the difference between current and previous logarithmic pitch. The best of the two output values is transmitted to the receiver. This scheme can exploit both redundancy in the signal and properties of the ear to achieve an efficient quantization. Listening tests show that the proposed scheme allows the pitch parameter to be quantized using 4 bits, with no degradation in audible quality.

AB - This paper describes a new pitch quantization method for low bit-rate speech coding systems. The logarithm of the pitch period is quantized in a combination of two uniform quantizers, one working directly on logarithmic pitch values and the other working on the difference between current and previous logarithmic pitch. The best of the two output values is transmitted to the receiver. This scheme can exploit both redundancy in the signal and properties of the ear to achieve an efficient quantization. Listening tests show that the proposed scheme allows the pitch parameter to be quantized using 4 bits, with no degradation in audible quality.

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