Title: Volume adjusting apparatus
Application Number: 200580016567 Application Date: 2005.05.24
Publication Number: 1957637 Publication Date: 2007.05.02
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04R3/02;H03D3/00
Applicant(s) Name: Matsushita Electric Ind Co., Ltd. Address:
Inventor(s) Name: Onizuka Kazuhiro;Matsumoto Izumi
Attorney & Agent: lujin hua huangqi hang
Abstract:
    A volume adjusting part (20) adjusts the volume in accordance with the operational amount of a volume operator (44). A howling detecting part (52) detects the occurrence of a howling accompanying a volume change using the volume adjusting part (20). A filter characteristic establishing part (54) of a control part (40) establishes a frequency characteristic of a howling suppressing filter (50) so as to suppress the howling detected by the howling detecting part (52). A volume adjusting function of a volume adjusting apparatus (10) is utilized as a howling adjusting function. The procedure of howling adjustment can be simplified.
Time: 12
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