Sony Corporation

Yuuji Yamada

Koyuru Okimoto

Toru Nakagawa

Toshiyuki Nakagawa

Yoshio Ohashi

Homare Kon

Juri Sakai

Provided is an acoustic transducer which is used by being fitted into an ear of a listener, is formed in a compact and lightweight shape, and preferably prevents re-reflection of a sound wave. An acoustic transduceris formed of a film-shaped material having an expanding and contracting action and includes a cylindrical acoustic transducing element. The cylindrical acoustic transducing elementalso functions as a sound guide tube. The acoustic transducing elementprevents re-reflection of the sound wave reflected by an eardrum when the sound wave has been generated and prevents localization phenomenon and a feeling of pressure in auditory sense. Also, since the acoustic transducing elementis formed in a compact and lightweight shape, the acoustic transducing elementgenerates the sound wave for directly reaching the eardrum or collects the sound at a place near the eardrum without a feeling of foreign materials in a case where a person wears the acoustic transducing elementthe an ear.

Acoustic transducer

An audio-signal processing device includes a decoding unit that decodes a compressed audio stream to obtain audio signals for a predetermined number of channels; a signal processing unit that generates 2-channel audio signals including left-channel audio signals and right-channel audio signals, on the basis of the predetermined-number-of-channels audio signals; and a coefficient setting unit that sets filter coefficients corresponding to the impulse responses for the digital filters, on the basis of format information of the compressed audio stream. The signal processing unit uses digital filters to convolve impulse responses for paths from sound-source positions of the channels to the left and right ears of a listener with the corresponding predetermined-number-of-channels audio signals and adds corresponding results of the convolutions for the channels to generate the left-channel audio signals and the right-channel audio signals.

Audio-signal processing device, audio-signal processing method, program, and recording medium

The present technique relates to a sound processing apparatus, a sound processing method, and a program which are configured to obtain higher quality sound. In order to obtain an objective characteristic, the sound processing apparatus previously holds a characteristic of the sound processing apparatus, generates an inverse characteristic filter of the characteristic of the sound processing apparatus, and generates a correction filter from the obtained filter and a filter having the objective characteristic. The sound processing apparatus uses the generated correction filter to subject a sound signal to be reproduced to filter processing, and reproduces sound based on the obtained sound signal. Therefore, a characteristic to be originally obtained can be achieved. The present technique can be applied to the sound processing apparatus.

Sound processing apparatus, sound processing method, and program

There is provided an audio signal processing device for setting, upon outputting audio signals from a left speaker and a right speaker each having an identical amplitude-frequency characteristic and a phase characteristic, and from one center speaker arranged between the left speaker and the right speaker, listening points between the left speaker and the center speaker and between the right speaker and the center speaker, the audio signal processing device including an inverse filter processing unit configured to provide inverse characteristics of an amplitude-frequency characteristic and a phase characteristic of the center speaker, and a speaker characteristic adding processing unit configured to correct the amplitude-frequency characteristic and the phase characteristic of an audio signal of the center speaker that have been processed by the inverse filter processing unit in a manner that they correspond to characteristics of the left speaker and the right speaker.

Audio signal processing device and audio signal processing method

A headphone apparatus includes sound reproduction units which respectively reproduce sound signals and are arranged so as to be separated from ear auricles of a headphone user, wherein each of the sound reproduction unit is configured by a speaker array including a plurality of speakers.

Headphone apparatus and sound reproduction method for the same

A sound-image control device includes a sound-image controller that processes a left sound signal and a right sound signal to localize a sound image at a predetermined position. The sound-image controller performs control for enhancing a sense of depth to a sound image originally included in an input sound signal.

Growing community of inventors

Tokyo, Japan

Yuuji Yamada