Invention Grant
- Patent Title: Thermoacoustic device
- Patent Title (中): 热声装置
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Application No.: US12756872Application Date: 2010-04-08
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Publication No.: US08325949B2Publication Date: 2012-12-04
- Inventor: Li Qian , Yu-Quan Wang , Chen Feng , Liang Liu
- Applicant: Li Qian , Yu-Quan Wang , Chen Feng , Liang Liu
- Applicant Address: CN Beijing
- Assignee: Beijing FUNATE Innovation Technology Co., Ltd.
- Current Assignee: Beijing FUNATE Innovation Technology Co., Ltd.
- Current Assignee Address: CN Beijing
- Agency: Altis Law Group, Inc.
- Priority: CN200810191730 20081230; CN200810191733 20081230; CN200810191734 20081230; CN200810191735 20081230; CN200810191736 20081230; CN200810191738 20081230; CN200910000259 20090115; CN200910169652 20090828; CN200910170294 20090911
- Main IPC: H04R25/00
- IPC: H04R25/00
Abstract:
An amplifier circuit for thermoacoustic device includes a peak hold circuit, an add-subtract circuit, and a power amplifier. The peak hold circuit is configured to accept an audio signal and output a peak hold signal. The add-subtract circuit is configured to accept the audio signal and the peak hold signal, and output a modulated signal after a comparison operation of the audio signal and the peak hold signal. The power amplifier is configured to accept the modulated signal, amplify the modulated signal, and output an amplified voltage signal.
Public/Granted literature
- US20100195849A1 THERMOACOUSTIC DEVICE Public/Granted day:2010-08-05
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