Invention Grant
US07657039B2 Sound quality enhancement circuit for audio signals and audio amplifier circuit using the same
有权
声音增强电路用于音频信号和音频放大电路使用相同
- Patent Title: Sound quality enhancement circuit for audio signals and audio amplifier circuit using the same
- Patent Title (中): 声音增强电路用于音频信号和音频放大电路使用相同
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Application No.: US10960087Application Date: 2004-10-08
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Publication No.: US07657039B2Publication Date: 2010-02-02
- Inventor: Takashige Miyashita , Hiroyuki Saito
- Applicant: Takashige Miyashita , Hiroyuki Saito
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Mattingly & Malur, PC
- Priority: JP2003-354647 20031015
- Main IPC: H04R1/40
- IPC: H04R1/40 ; H03G5/00 ; H03G3/00 ; H04B3/14 ; H03G5/02
Abstract:
The present invention comprises a circuit having at least not less than three cascade connected phase shift circuits and wherein the phase characteristic of the circuit is determined in such a manner that the phase of the audio input signals is gradually delayed depending on logarithmic increase of frequencies in a range of audible frequencies and a phase delay in a range of 450 degree˜600 degree in total in the range of audible frequencies is caused.
Public/Granted literature
- US20050084117A1 Sound quality enhancement circuit for audio signals and audio amplifier circuit using the same Public/Granted day:2005-04-21
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