SPEECH ENCODING DEVICE, SPEECH DECODING DEVICE, SPEECH ENCODING METHOD, SPEECH DECODING METHOD, SPEECH ENCODING PROGRAM AND SPEECH DECODING PROGRAM Russian patent published in 2016 - IPC G10L21/02 G10L19/02 

Abstract RU 2595951 C2

FIELD: information technology.

SUBSTANCE: present invention relates to the means of encoding and decoding a speech signal. A linear prediction coefficient of a signal presented in a frequency domain is obtained by performing linear prediction analysis in a frequency direction by using a covariance method or an autocorreletion method. Once the filter strength of the obtained linear prediction coefficient is adjusted, filtering may be performed in the frequency direction on the signal by using the adjusted coefficient, whereby the temporal envelope of the signal is formed. This reduces the occurence of pre-echo and post-echo and improves the subjective quality of the decoded signal, without significantly increasing the bit rate in a band extension technique in the frequency domain, represented by a spectral band replication (SBR).

EFFECT: to reduce pre-echo and post-echo and improve the quality of the decoded signal without increasing the bit rate.

4 cl, 50 dwg

Similar patents RU2595951C2

Title Year Author Number
SPEECH ENCODER, SPEECH DECODER, SPEECH ENCODING METHOD, SPEECH DECODING METHOD, SPEECH ENCODING PROGRAM AND SPEECH DECODING PROGRAM 2010
  • Tsudzino Kosuke
  • Kikuiri Kej
  • Naka Nobukhiko
RU2498421C2
SPEECH ENCODER, SPEECH DECODER, SPEECH ENCODING METHOD, SPEECH DECODING METHOD, SPEECH ENCODING PROGRAM AND SPEECH DECODING PROGRAM 2010
  • Tsudzino Kosuke
  • Kikuiri Kej
  • Naka Nobukhiko
RU2498422C1
SPEECH ENCODER, SPEECH DECODER, SPEECH ENCODING METHOD, SPEECH DECODING METHOD, SPEECH ENCODING PROGRAM AND SPEECH DECODING PROGRAM 2010
  • Tsudzino Kosuke
  • Kikuiri Kej
  • Naka Nobukhiko
RU2498420C1
SPEECH ENCODING DEVICE, SPEECH DECODING DEVICE, SPEECH ENCODING METHOD, SPEECH DECODING METHOD, SPEECH ENCODING PROGRAM AND SPEECH DECODING PROGRAM 2012
  • Tsudzino Kosuke
  • Kikuiri Kej
  • Naka Nobukhiko
RU2595915C2
SPEECH ENCODING DEVICE, SPEECH DECODING DEVICE, SPEECH ENCODING METHOD, SPEECH DECODING METHOD, SPEECH ENCODING PROGRAM AND SPEECH DECODING PROGRAM 2012
  • Tsudzino Kosuke
  • Kikuiri Kej
  • Naka Nobukhiko
RU2595914C2
SPEECH DECODER, SPEECH ENCODER, SPEECH DECODING METHOD, SPEECH ENCODING METHOD, SPEECH DECODING PROGRAM AND SPEECH ENCODING PROGRAM 2018
  • Kikuiri, Kei
  • Yamaguchi, Atsushi
RU2674922C1
SPEECH DECODER, SPEECH ENCODER, SPEECH DECODING METHOD, SPEECH ENCODING METHOD, SPEECH DECODING PROGRAM AND SPEECH ENCODING PROGRAM 2018
  • Kikuiri, Kej
  • Yamaguti, Atsusi
RU2679973C1
SPEECH DECODER, SPEECH ENCODER, SPEECH DECODING METHOD, SPEECH ENCODING METHOD, SPEECH DECODING PROGRAM AND SPEECH ENCODING PROGRAM 2012
  • Kikuiri Kej
  • Yamaguti Atsusi
RU2599966C2
SPEECH DECODER, SPEECH CODER, SPEECH DECODING METHOD, SPEECH ENCODING METHOD, SPEECH DECODING PROGRAM AND SPEECH CODING PROGRAM 2019
  • Kikuiri, Kei
  • Yamaguchi, Atsushi
RU2718425C1
SPEECH DECODER, SPEECH CODER, SPEECH DECODING METHOD, SPEECH ENCODING METHOD, SPEECH DECODING PROGRAM AND SPEECH CODING PROGRAM 2020
  • Kikuiri, Kei
  • Yamaguchi, Atsushi
RU2742199C1

RU 2 595 951 C2

Authors

Tsudzino Kosuke

Kikuiri Kej

Naka Nobukhiko

Dates

2016-08-27Published

2012-07-17Filed