This publication describes systems and techniques for a microphone with an improved dynamic range. Electronic devices, including smartphones, generally include a microphone to enable users to interact with the electronic device vocally. Microphones in electronic devices, especially portable electronic devices, are often operated in a low-power mode to conserve battery power. In a low-power mode, the microphones are generally operated with reduced bandwidth and may not accurately detect communications outside that bandwidth. The disclosed systems and techniques provide a microphone that uses an adaptive sigma-delta modulator to improve its dynamic range in low-power mode.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Lyon, Dick, "Microphone with Improved Dynamic Range", Technical Disclosure Commons, (November 04, 2020)