Multi-band limiter, sound recording apparatus, and program storage medium

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United States of America Patent

PATENT NO 9899981
APP PUB NO 20170117865A1
SERIAL NO

15335127

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A multi-band limiter, a sound recording apparatus, and a program are provided having a multi-band limit function with a flat frequency characteristic while removing a dead zone of a multi-band limiter. A cross-over filter unit divides an input sound signal into a low-band component, a middle-band component, and a high-band component so that the adjacent bands cross at −6 dB. An overlap filter unit includes a low-band filter element, a middle-band filter element, and a high-band filter element that respectively divide the input sound signal into a low-band component, a middle-band component, and a high-band component, and applies a limit process to divide the input sound signal in such a manner that the low-band component and the middle-band component overlap each other and the middle-band component and the high-band component overlap each other by setting a high-band side cutoff frequency of the low-band filter element to be greater than or equal to a low-band side cutoff frequency of the middle-band filter element and setting a high-band side cutoff frequency of the middle-band filter element to be greater than or equal to a low-band side cutoff frequency of the high-band filter element, and set a control gain by a CG for each band, and an adder combines the components.

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Patent Owner(s)

Patent OwnerAddress
TEAC CORPORATION1-47 OCHIAI TAMA-SHI TOKYO 206-8530

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adachi, Shigeyuki Tokyo, JP 60 252
Shimada, Hirotoshi Tokyo, JP 9 16

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