Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ACOUSTIC SIGNAL ENCODING METHOD, ACOUSTIC SIGNAL DECODING METHOD, PROGRAM, ENCODING DEVICE, ACOUSTIC SYSTEM AND COMPLEXING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/171049
Kind Code:
A1
Abstract:
Provided is an acoustic signal encoding method capable of encoding even acoustic signals that have many channels at a sufficient bitrate. The acoustic signal encoding method is implemented by an encoding device 1, and encodes a multichannel acoustic signal. First, a masking threshold corresponding to the spatial auditory masking effect is calculated. Then, the amount of information to be allocated for each channel of the multichannel acoustic signal is determined using the calculated masking threshold. Thereafter, the multichannel acoustic signal is encoded using the respectively assigned amounts of information. Thus, it is possible to encode even multichannel acoustic signals at a sufficient bitrate.

More Like This:
WO/2022/156556BIT ALLOCATION METHOD AND APPARATUS FOR AUDIO OBJECT
JP5918249A load value function deciding device which has the degree of low complicated for quantizing a linear-predictive-coding coefficient, and a method for the same
WO/2022/192217AUDIO CODEC WITH ADAPTIVE GAIN CONTROL OF DOWNMIXED SIGNALS
Inventors:
NISHIGUCHI MASAYUKI (JP)
KATO KODAI (JP)
Application Number:
PCT/JP2020/006211
Publication Date:
August 27, 2020
Filing Date:
February 18, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
UNIV AKITA PREFECTURAL (JP)
International Classes:
G10L19/002; G10L19/008; G10L19/035
Foreign References:
JP2016524726A2016-08-18
JP2015531078A2015-10-29
JP2016518788A2016-06-23
JP2014016625A2014-01-30
JP2016224472A2016-12-28
Other References:
KODAI KATO, MASAYUKI NISHIGUCHI, KANJI WATANABE, SHOUICHI TAKANE, KOJI ABE: "Study on 3D audio coding based on spatial auditory masking", IEICE TECHNICAL REPORT, vol. 118, no. 497, 7 March 2019 (2019-03-07), pages 271 - 278, XP009530393
ANDREAS SPANIAS ET AL.: "Audio Signal Processing and Coding", 2007, WILEY-INTERSCIENCE, JOHN WILEY & SONS, INC.
See also references of EP 3929918A4
Attorney, Agent or Firm:
HORI, Shiroyuki et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: AIRTIGHT TERMINAL AND PRESSURE-RESISTANT CONTAINER

Next Patent: ELASTIC WAVE DEVICE