Invention Grant
- Patent Title: Sound reproduction device
- Patent Title (中): 声音再现设备
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Application No.: US11188879Application Date: 2005-07-26
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Publication No.: US07693290B2Publication Date: 2010-04-06
- Inventor: Tomoaki Mizuno
- Applicant: Tomoaki Mizuno
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Posz Law Group, PLC
- Priority: JP2004-236540 20040816
- Main IPC: H03G3/00
- IPC: H03G3/00

Abstract:
A sound reproduction device such as a radio receiver or a cellular phone includes an antenna, a control unit and a speaker. The control unit determines whether a radio wave receiving condition is satisfactory. The receiving condition is represented by field strength of the radio wave or a degradation of a sound signal in the radio wave. If the receiving condition is not satisfactory, the control unit adds an acoustic effect to the sound signal thereby to notify listeners of degradation of receiving condition. The acoustic effect may be a changing of sound image localization, a changing of a frequency characteristic and a changing of a reverberation characteristic. The acoustic effect is stopped for a specified period after the acoustic effect is added, even when the receiving condition is not satisfactory.
Public/Granted literature
- US20060034464A1 Sound reproduction device Public/Granted day:2006-02-16
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