Title:
SURROUND CIRCUIT AND AUDIO OUTPUT DEVICE
Document Type and Number:
Japanese Patent JP2013017046
Kind Code:
A
Abstract:
To provide a surround circuit and an audio output device, capable of enhancing a stereo effect and playing back sounds having a depth feeling and a spread feeling.
The surround circuit, for inputting a sound signal and enhancing a sound field feeling when played back, comprises: a feed forward circuit 100 which enhances a sound spread feeling by multiplying an inputted sound signal by a feed forward adding gain G5; a high pass filter 30 which cuts a low-pitched signal out of a sound signal outputted from the feed forward circuit 100; and a feedback circuit 200 which enhances a sound depth feeling by multiplying a sound signal outputted from the high pass filter 30 by a feedback gain G3.
Inventors:
YOKOYAMA YASUTOMO
Application Number:
JP2011148454A
Publication Date:
January 24, 2013
Filing Date:
July 04, 2011
Export Citation:
Assignee:
ROHM CO LTD
International Classes:
H04S1/00
Domestic Patent References:
| JPH07107598A | 1995-04-21 | |||
| JP2000341798A | 2000-12-08 | |||
| JPS59202499A | 1984-11-16 | |||
| JP2010213135A | 2010-09-24 | |||
| JPH0990965A | 1997-04-04 | |||
| JPH0527800U | 1993-04-09 | |||
| JPH07107598A | 1995-04-21 | |||
| JP2000341798A | 2000-12-08 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Keishin Terayama
Hiroyuki Miyoshi
Ichitaro Ito
Keishin Terayama
Hiroyuki Miyoshi
Ichitaro Ito
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