Sound field controller and control method

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The Matsushita Electric Industrial Co., Ltd. patent solves the following problem:

The present invention relates to a sound field controller for use in audio-visual (AV) equipment, and a method used in such a sound field controller. Particularly, the present invention relates to a sound field controller for sound reproduction with a greeting in front by controlling the distance on the view and the feeling of expansion of a sound image , and with more natural reproduction frequency.

Our analysis of this patent is as follows:

Matsushita Electric Industrial Co., Ltd.’s patent US 5742688 A deals with Sound field controller and control method.
A sound field controller of the invention reproduces a sound field that gives a distance perspective depending on a position of a sound image for an audience. The sound field controller includes: an A / D converter; a signal processing section for processing the digital signal using the predetermined parameters, and to generate a voice signal; an input device for inputting conditions including a position in a voice of local and some distance from a listener; a standard controller to make arguments in the section signal processing so that the voice signal with attributes according to the input conditions; a D / A converter; and a reproducing unit for expanding and copying the signal output from the D / A converter.

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