Title:
ACOUSTIC SIGNAL PROCESSOR
Document Type and Number:
Japanese Patent JP3246327
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To perform an efficient eliminating operation of soundless portion by providing a detecting means for detecting a small sound lower than a predetermined signal level to include a soundless state and a means for interrupting the progress of write addresses.
SOLUTION: When an input signal is lower than a predetermined level, a small sound detecting section 34 outputs a small sound status signal SM in a high level state (small sound state) to a monostable multivibrator MM 19. In this case, when the signal SM changes from its low level state to a high level state (small sound portion or soundless portion), the MM 19 is triggered, a pulse SMu is outputted and supplied as a reset signal Pr2 from an OR circuit OR 22 to a set/reset flip flop RSFF 24. When a small sound state including non-sound is realized, by interrupting the progress of write addresses, a series of long block time listening processing is efficiently performed.
Inventors:
Katsuyuki Shuto
Application Number:
JP9939396A
Publication Date:
January 15, 2002
Filing Date:
March 27, 1996
Export Citation:
Assignee:
Victor Company of Japan Ltd.
International Classes:
H04N5/76; G10L19/00; G10L21/003; G10L21/007; G10L21/04; G10L21/057; G10L25/78; G11B20/02; H03M1/06; H03M1/66; (IPC1-7): G11B20/02; G10L11/02; G10L21/04; H03M1/06; H03M1/66
Domestic Patent References:
| JP7262687A | ||||
| JP3205656A | ||||
| JP883096A |
Attorney, Agent or Firm:
Takao Imama