Fujitsu Corporation

Socionext Inc.

Sosaku Moriki

Yoshiteru Tsuchinaga

Shusaku Ito

Miyuki Shirakawa

Yasufumi Sakai

Jun Ono

Mari Asami

Tomoya Fujita

Katsumori Hagiwara

An information processing apparatus includes: a memory configured to store program instructions to perform quantization on quantization target data; and a processor configured to execute the program instructions stored in the memory, the program instructions including: obtaining a distribution of appearance frequencies of a plurality of variable elements included in the quantization target data; and aligning a most significant bit position of a quantization position to a variable element smaller than a variable element of a maximum value among the plurality of variable elements based on the distribution of the appearance frequencies of the plurality of variable elements.

Information processing apparatus, method of processing information, and non-transitory computer-readable storage medium for storing information processing program

An encoding method executed by a computer, the method includes converting by the computer information about a transient included in a low-frequency component of an audio signal into information about a transient included in a high-frequency component of the audio signal, detecting, by the computer the transient of the high-frequency component of the audio signal based on the high-frequency component of the audio signal and on the information about the transient of the high-frequency component obtained by the converting; and encoding, by the computer the high-frequency component of the audio signal based on the transient detected by the detecting.

Encoding method, encoding apparatus, and computer readable recording medium

An audio signal coding device divides a frequency spectrum obtained from an input digital signal to a plurality of bands, scales and quantizes divided frequency spectra based on a scalefactor of each of the bands and a common scale which is common to the plurality of bands, and codes quantized frequency spectra. The audio signal coding device includes a band number determination unit configured to calculate a number of coding bands for coding the quantized frequency spectra, and a common scale estimation unit configured to estimate the common scale in accordance with the number of coding bands.

Audio signal coding device and audio signal coding method

Growing community of inventors

Fukuoka, Japan

Sosaku Moriki