Matsushita Electric Industrial Co., Ltd.

Socionext Inc.

Panasonic Corporation

Matushita Electric Industrial Co., Ltd.

Kazutaka Abe

Shuji Miyasaka

Akihisa Kawamura

Masaharu Matsumoto

Takashi Katayama

Masahiro Sueyoshi

Takeshi Fujita

Kosuke Nishio

Kousuke Nishio

Katsumi Kobayashi

Yong Hwee Sim

Zong Xian Liu

Anh Tuan Tran

Tsuyoshi Nakamura

Eiji Otomura

Tsukuru Ishito

Yoshitaka Mizuno

Kenichi Terai

Naoki Ejima

Ryoji Suzuki

Yoshiaki Takagi

Masatoshi Shimbo

Isao Kakuhari

Yasuhito Watanabe

Gempo Ito

Ryoji Yamaguchi

Yoshinori Kumamoto

Ken Monda

Hiroshi Taniuchi

Shinji Kojima

Seigo Suguta

Makoto Meiarashi

Yasunori Naruse

Kakeshi Fujita

An audio communication device includes: a sound position determiner that determines sound localization positions for N audio signals in a virtual space having first and second walls; N sound localizers each performing sound localization processing to localize sound in the sound localization position determined by the sound position determiner, and outputting localized sound signals; an adder that sums the N localized sound signals, and outputs a summed localized sound signal. Each sound localizer performs the processing using: a first head-related transfer function (HRTF) assuming that a sound wave emitted from the sound localization position of the sound localizer determined by the sound position determiner directly reaches each ear of a hearer virtually present at the hearer position; and a second HRTF assuming that the sound wave emitted from the sound localization position reaches each ear of the hearer after being reflected by closer one of the first and second walls.

Audio communication device

A signal processing device includes one or more filter processors that perform sound localization processing of an input acoustic signal and generate output signals; a coefficient setter that sets, for the filter processors, a plurality of filter coefficients for use in the filter processors; an output data selector that selects, out of the output signals subjected to the sound localization processing by the filter processors, output signals to be output to a left speaker and a right speaker; a time measurer that monitors a time for switching the output signals; and a controller that causes the output data selector to select the output signals in accordance with the time for switching the output signals. The plurality of filter coefficients include filter coefficients generated under a plurality of hearing conditions.

Signal processing device and signal processing method for performing sound localization processing

An audio signal processing device includes a memory; and a processor configured to execute receiving a command to determine one set of parameters from among parameters calculated according to positions at which a sound is localized, the positions being set relative to positions of audio output devices; and processing a sound to be output from the audio output devices, by using the one set of parameters determined based on the received command.

Sound signal processing device, sound adjustment method, and medium

An acoustic system includes an audio output device configured to output a sound to a listener being still at least for a predetermined period of time, and an acoustic control device configured to perform signal processing for localizing, at a specific part of the listener, the sound that is output through the audio output device, wherein the audio output device is installed above the specific part of the listener.

Acoustic system and acoustic control device

An acoustic signal processing device includes: a front signal processor which generates first L and R signals by performing signal processing on a first signal which is a front channel signal; a first adder which generates a fourth signal which is a left channel signal by adding the first L signal and a second signal which is a left channel signal; and a second adder which generates a fifth signal which is a right channel signal by adding the first R signal and a third signal which is a right channel signal. The front signal processor generates the first L and R signals by signal processing in which the first signal is distributed and placed at predetermined positions when the first signal is a dialog signal, and distributed and placed at positions different from the predetermined positions when the first signal is not a dialog signal.

Acoustic signal processing device and acoustic signal processing method

An audio signal processor includes: a first amplifier that amplifies a first audio content; a mixer that mixes an output signal of the first amplifier and a second audio content; a second amplifier that amplifies an output signal of the mixer; and a setter that sets an amplification amount of the first amplifier. The setter sets an amplification amount in the first amplifier so that the amplification amount in the first amplifier cancels an amplification amount in the second amplifier.

Audio signal processor

An acoustic device that provides a stereophonic effect to a driver of a mobile object includes: a plurality of speakers (an L channel speaker and an R channel speaker) mounted on a steering wheel that controls a traveling direction of the mobile object; a steering angle detection unit configured to detect a steering angle of the steering wheel; and a signal output unit configured to output a plurality of output signals obtained by performing, on a sound signal, a process relating to the stereophonic effect and depending on the steering angle, respectively to the plurality of speakers.

Acoustic device and mobile object

A signal processor that performs crosstalk cancellation on an audio signal that is input, in a distorted acoustic space where two speakers are placed, the two speakers including an X-side speaker and a Y-side speaker, where X denotes one of left and right, and Y denotes the other of left and right. The signal processor causes the Y-side speaker to output a sound of the audio signal and causes the X-side speaker to output a sound of a signal obtained by processing the audio signal using transfer function GCY, where a transfer function between the Y-side speaker and the Y-side ear is defined as GYY, a transfer function between the X-side speaker and the Y-side ear is defined as GXY, and a transfer function obtained by dividing the transfer function GYY by the transfer function GXY is defined as GCY.

Signal processor

A signal processing device, comprising a high band attenuation filter which attenuates a signal component in a bandwidth of frequency higher than at least a predetermined frequency in an audio signal that is input, and a hearing aid processor which performs hearing aid processing on a signal output from the high band attenuation filter, wherein the predetermined frequency is determined according to the upper limit of a target bandwidth of frequency for hearing aid.

Signal processing device and signal processing method

An audio reproduction apparatus includes: a signal processing unit that converts an audio signal into N channel signals, where N is an integer greater than or equal to 3; and a speaker array including N speaker elements that respectively output the N channel signals as reproduced sound, wherein the signal processing unit includes: a beam formation unit that performs a beam formation process of resonating the reproduced sound output from the speaker array at a position of one ear of the listener; and a cancellation unit that performs a cancellation process of preventing the reproduced sound output from the speaker array from reaching a position of the other ear of the listener.

Audio reproduction apparatus and game apparatus

A device including a speech recognition function which recognizes speech from a user, includes: a loudspeaker which outputs speech to a space; a microphone which collects speech in the space; a first speech recognition unit which recognizes the speech collected by the microphone; a command control unit which issues a command for controlling the device, based on the speech recognized by the first speech recognition unit; and a control unit which prohibits the command issuance unit from issuing the command, based on the speech to be output from the loudspeaker.

Device including speech recognition function and method of recognizing speech

A signal processing device includes phase rotation units which rotate a phase of a signal A and generate two signals having a phase difference of &#x3b8;, and a control unit which performs transition of &#x3b8; over time. The control unit controls phases so that &#x3b8; is approximately 0 degrees at a time point Tand &#x3b8; is approximately 180 degrees at a time point T

Signal processing device

An input signal includes a channel-based audio signal and an object-based audio signal, and an audio encoding device includes an audio scene analysis unit configured to determine an audio scene from the input signal and detect audio scene information; a channel-based encoder that encodes the channel-based audio signal output from the audio scene analysis unit; an object-based encoder that encodes the object-based audio signal output from the audio scene analysis unit; and an audio scene encoding unit configured to encode the audio scene information.

Audio decoding device

An audio playback device which plays back an audio object including an audio signal and playback position information indicating a position in a three-dimensional space at which a sound image of the audio signal is localized, includes: at least one speaker array; a converting unit which converts playback position information to corrected playback position information which is information indicating a position of the sound image on a two-dimensional coordinate system based on a position of the at least one speaker array; and a signal processing unit which localizes the sound image of the audio signal included in the audio object according to the corrected playback position information.

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Osaka, Japan

Kazutaka Abe