Title:
SOUND REPRODUCTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/135854
Kind Code:
A1
Abstract:
This sound reproduction apparatus (1) is equipped with: a switching circuit (10) for switching whether to subtract a correction signal from an input signal and output the same as a first signal, or to output a test signal as the first signal; a first amplitude regulator (41) for regulating the amplitude of the first signal and outputting the same as a second signal; a second amplitude regulator (42) for regulating the amplitude of a third signal which has passed through a speaker system (110) and outputting the same as a fourth signal; a correction value calculator (60) for adjusting one or more parameters for the first amplitude regulator (41) and the second amplitude regulator (42), on the basis of first frequency amplitude properties of the second signal and second frequency amplitude properties of the fourth signal when the test signal is outputted as the first signal; and a property correction circuit (80) for generating the correction signal on the basis of the difference between the second signal and the fourth signal.
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Inventors:
OKUDA TADAYOSHI
Application Number:
PCT/JP2022/032741
Publication Date:
July 20, 2023
Filing Date:
August 31, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H04R3/04
Foreign References:
| JP2010288119A | 2010-12-24 | |||
| JP2012186676A | 2012-09-27 | |||
| JPH07222276A | 1995-08-18 |
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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