SYSTEMS AND METHODS FOR COMPRESSING A DIGITAL SIGNAL IN A DIGITAL MICROPHONE SYSTEM |
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| 申请号 | PCT/US2014033314 | 申请日 | 2014-04-08 | 公开(公告)号 | WO2014168939A3 | 公开(公告)日 | 2015-01-29 |
| 申请人 | CIRRUS LOGIC INC; | 发明人 | MELANSON JOHN L; TUCKER JOHN C; | ||||
| 摘要 | In accordance with embodiments of the present disclosure, a digital microphone system may include a microphone transducer and a digital processing system. The microphone transducer may be configured to generate an analog input signal indicative of audio sounds incident upon the microphone transducer. The digital processing system may be configured to convert the analog input signal into a first digital signal having a plurality (e.g., more than 3) of quantization levels, and in the digital domain, process the first digital signal to compress the first digital signal into a second digital signal having fewer quantization levels (e.g., +1, 0, -1) than that of the first digital signal. | ||||||
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| 说明书全文 | |||||||
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