Sony Corporation

Masahiro Okuno

Shigeru Tanaka

Akira Sakamoto

Hiroyuki Arai

Koji Kobayashi

Toshiaki Sato

Akira Shinada

Tomohisa Takaoka

Ippei Tambata

Katsuhiko Nunokawa

Hiroaki Okajima

Yasuyuki Kino

Tokihiko Sawashi

Hiroyuki Chigasaki

Hideyuki Ishihara

Hiroyuki Okuda

A sound field measurement apparatus includes a signal generating unit for outputting a burst signal, a driving unit for driving a speaker using the burst signal, a microphone for picking up an audio output from the speaker, an analog-digital converter for performing analog-digital conversion processing on an output signal from the microphone and outputting picked-up audio data, a filtering unit for performing filtering processing on the picked-up audio data, and an analyzing unit for determining a propagation time of the audio output from the speaker to the microphone in accordance with data output from the filtering unit. In this sound field measuring apparatus, the filtering unit is an IIR filter configured to filter the picked-up audio data forward and then backward along a time axis, or an IIR filter configured to filter the picked-up audio data backward and then forward along the time axis.

Apparatus and method for measuring sound field

In an information transmitter () which is a portable personal information device, a system control circuit () analyzes information on vibration obtained from an acceleration sensor (), information on temperature obtained from a temperature sensor (), or external information such as user's personal information obtained from a communication section () and selects a light-emission pattern of LEDs (and), a vibration pattern of vibrators (and), and a sound generated by a sound-reproducing section ().

Information transmission apparatus, information transmission method, and monitoring apparatus

A file management method displays representations of files belonging to a predetermined folder and representations of files belonging to a subfolder of the predetermined folder in a virtual form in which the representations of the files belonging to the predetermined folder and the representations of the files belonging to the subfolder belong to a single folder so that the file of desired content can be easily and securely found. The file management method, a program for performing the file management method, a recording medium containing the program, and a file management apparatus are intended for use in car-mounted apparatuses.

File management method, program therefore, recording medium containing the program, and file management apparatus for performing the method

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Kanagawa, Japan

Masahiro Okuno