Invention Grant
- Patent Title: Apparatus and method for noise reduction and sound recording
- Patent Title (中): 用于降噪和录音的设备和方法
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Application No.: US12833563Application Date: 2010-07-09
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Publication No.: US08626500B2Publication Date: 2014-01-07
- Inventor: Koichi Washisu , Masafumi Kimura , Fumihiro Kajimura
- Applicant: Koichi Washisu , Masafumi Kimura , Fumihiro Kajimura
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Cowan, Liebowitz & Latman, P.C.
- Priority: JP2009-174740 20090727
- Main IPC: G10L21/02
- IPC: G10L21/02

Abstract:
A sound recording apparatus having a driving unit generates a sound signal from an input sound, detects the level of the sound signal, adjusts the level of the generated sound signal at an amplification factor corresponding to the detected level, and processes the adjusted sound signal to prevent an amplified sound signal from containing a sound signal generated upon driving the driving unit. The sound recording apparatus controls to replace a sound signal in a predetermined period after instructing driving of the driving unit with a signal calculated from a sound signal in the first period after the predetermined period, and to substantially equalize an amplification factor when driving of the driving unit is instructed and that in the first period.
Public/Granted literature
- US20110022403A1 SOUND RECORDING APPARATUS AND METHOD Public/Granted day:2011-01-27
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