Thermoacoustic device
US8325949B2 · kind B2 · utility
6Cited by
25References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jan 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2205/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.