Title:
SPEAKER DEVICE AND SIGNAL PROCESSING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/137299
Kind Code:
A1
Abstract:
The present invention is a speaker device having: an amplifier; a protection circuit connected to an input side of the amplifier; and a capacitive load connected to an output side of the amplifier. The protection circuit has: a clipper for clipping the level of an input signal to a level lower than a prescribed level; and a filter unit for removing harmonics included in an output of the clipper.
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Inventors:
SUZUKI NOBUKAZU (JP)
Application Number:
PCT/JP2019/045957
Publication Date:
July 02, 2020
Filing Date:
November 25, 2019
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04R3/00; H03F3/181; H03F3/217; H03G9/02
Domestic Patent References:
| WO2007119362A1 | 2007-10-25 |
Foreign References:
| JP2009065427A | 2009-03-26 | |||
| JP2012217026A | 2012-11-08 | |||
| JP2018507608A | 2018-03-15 | |||
| JP2012217010A | 2012-11-08 | |||
| US5737432A | 1998-04-07 |
Attorney, Agent or Firm:
SUGIURA, Masatomo et al. (JP)
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