Title:
ENCODING METHOD, DECODING METHOD, ENCODING APPARATUS, DECODING APPARATUS, PROGRAM AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2012/111512
Kind Code:
A1
Abstract:
In encoding, according to whether an index or indices representative of the degree(s) of the periodicity and/or stationarity of input time sequence signals satisfy a condition for indicating that the periodicity and/or stationarity is high or whether the index or indices satisfy a condition for indicating that the periodicity and/or stationarity is low, a switching is performed between numbers of bits that are to be assigned to a code corresponding to a noise or pulse sequence obtained on the basis of a prediction analysis of the time sequence signals included in a predetermined time interval, thereby obtaining the code corresponding to the noise or pulse sequence. In decoding, a switching is performed between methods for decoding the code corresponding to the noise or pulse sequence included in the code corresponding to the predetermined time interval on the basis of the same criterion, thereby decoding the code corresponding to the noise or pulse sequence, thereby obtaining the noise or pulse sequence corresponding to the predetermined time interval.
Inventors:
MORIYA TAKEHIRO (JP)
HARADA NOBORU (JP)
KAMAMOTO YUTAKA (JP)
HIWASAKI YUSUKE (JP)
FUKUI MASAHIRO (JP)
HARADA NOBORU (JP)
KAMAMOTO YUTAKA (JP)
HIWASAKI YUSUKE (JP)
FUKUI MASAHIRO (JP)
Application Number:
PCT/JP2012/052884
Publication Date:
August 23, 2012
Filing Date:
February 08, 2012
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
MORIYA TAKEHIRO (JP)
HARADA NOBORU (JP)
KAMAMOTO YUTAKA (JP)
HIWASAKI YUSUKE (JP)
FUKUI MASAHIRO (JP)
MORIYA TAKEHIRO (JP)
HARADA NOBORU (JP)
KAMAMOTO YUTAKA (JP)
HIWASAKI YUSUKE (JP)
FUKUI MASAHIRO (JP)
International Classes:
G10L19/035; G10L19/125; G10L19/16; H03M7/38
Foreign References:
| JP2006211243A | 2006-08-10 | |||
| JP2002268696A | 2002-09-20 |
Other References:
"AMR speech codec; Transcoding functions", 3RD GENERATION PARTNERSHIP PROJECT (3GPP), TECHNICAL SPECIFICATION (TS) 26.090, March 2001 (2001-03-01)
See also references of EP 2660811A4
See also references of EP 2660811A4
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
Naoki Nakao (JP)
Naoki Nakao (JP)
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Claims: