ENCODING DEVICE, DECODING DEVICE, METHODS THEREFOR, PROGRAM, AND RECORDING MEDIUM

Title:

ENCODING DEVICE, DECODING DEVICE, METHODS THEREFOR, PROGRAM, AND RECORDING MEDIUM

Document Type and Number:

WIPO Patent Application WO/2016/121826

Kind Code:

A1

Abstract:

An encoding device according to the present invention uses frequency domains to encode a time-series signal for each prescribed time interval. The encoding device is provided with an encoding unit in which: a parameter (η) is set as a positive number; the parameter (η) corresponding to a time-series signal is used as a shape parameter of a generalized Gaussian distribution for approximating a histogram of a whitened spectral series, i.e. a series obtained by dividing a frequency domain sample sequence corresponding to the time-series signal by a spectral envelope estimated by considering the η power of the absolute value of the frequency domain sample sequence to be a power spectrum; any of a plurality of the parameters (η) can be selected for each of the prescribed time intervals, or the parameter (η) is variable; and encoding processing having a configuration specified on the basis of at least the parameter (η) for each of the prescribed time intervals is used to encode the time-series signal for each of the prescribed time intervals.

Inventors:

MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
HARADA NOBORU (JP)
KAWANISHI TAKAHITO (JP)
KAMEOKA HIROKAZU (JP)
SUGIURA RYOSUKE (JP)

Application Number:

PCT/JP2016/052365

Publication Date:

August 04, 2016

Filing Date:

January 27, 2016

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON TELEGRAPH & TELEPHONE (JP)
UNIV TOKYO (JP)

International Classes:

G10L19/02; G10L19/035; G10L19/06

Domestic Patent References:

WO2012046685A1

2012-04-12

Foreign References:

JPH08288852A	1996-11-01
JP2006304270A	2006-11-02

Other References: