ACOUSTIC SIGNAL WAVEFORM INTENSIFIER AND INTENSIFYING METHOD

Title:

ACOUSTIC SIGNAL WAVEFORM INTENSIFIER AND INTENSIFYING METHOD

Document Type and Number:

WIPO Patent Application WO/1998/018203

Kind Code:

A1

Abstract:

Input acoustic signals are subjected to integration of the order of an even number by one or plurality of even-number order integrators and the input acoustic signals are subjected to differentiation of the order of an even number by one or plurality of even-number order differentiators. The even-number order integration signals subjected to the even-number order integration and the even-number order differentiation signals subjected to the even-number order differentiation are added to the input acoustic signals with the same phases or opposite phases. Thus, the expected frequency-gain characteristics can be obtained while the phase relations between the frequency components of the input acoustic signals in particular the intermediate audio frequency range, a part of the low audio frequency range near said intermediate audio frequency range, and a part of the high frequency range near said intermediate frequency range are maintained, so that the high grade sound quality can be achieved.

Inventors:

KAKUMOTO JUN-ICHI (JP)
AKAMATSU NORIO

Application Number:

PCT/JP1997/003815

Publication Date:

April 30, 1998

Filing Date:

October 22, 1997

Export Citation:

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Assignee:

KAKUMOTO JUN ICHI (JP)

International Classes:

H03G5/10; (IPC1-7): H03G5/02; H03H11/04

Foreign References:

JPS59161110A	1984-09-11
JPS61295710A	1986-12-26
JPS495371B1	1974-02-06
JPS63276311A	1988-11-14
JPS56132804A	1981-10-17
JPS5349953U	1978-04-27

Other References: