Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: Mixed-signal speech processing system has been used in microphone-embedded portable electronics. Speech codec is the core of such a system. In speech codecs, sigma-delta modulator is one key block which converts analog voice signal into pulse density modulation (PDM) output for further digital signal processing.  shows the design of a triple-mode switched-capacitor sigma-delta modulator for speech codec. High mode (20 kHz signal bandwidth), low mode (4 kHz signal bandwidth), and sleep mode are implemented by addressing a flexible operation current. In order to realize a fully integrated solution, por management circuits dedicated to the modulator are also implemented, which includes frequency detector, LDO, bandgap and reference voltage buffers. The ASIC is fabricated in a 0.18-um CMOS process. In high mode measurement, an A-ighted signal-to-noise ratio (SNR) of 78 dB with −2.5 dBFS input is achieved under 138 uA. In low mode measurement, an SNR of 78 dB with −2 dBFS is achieved under 100 uA. In the standby condition, a sleep mode with current less than 10 uA is realized, so that the battery life is extended.
['Lei Zou', 'Marco De Blasi', 'Gino Rocca', 'M. Grassi', 'P. Malcovati', 'A. Baschirotto']
I am writing a research paper on a idea Fully integrated triple-mode sigma-delta modulator for speech codec
[{"from": "human", "value": "I am writing a research paper on a idea Fully integrated triple-mode sigma-delta modulator for speech codec"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: Mixed-signal speech processing system has been used in microphone-embedded portable electronics. Speech codec is the core of such a system. In speech codecs, sigma-delta modulator is one key block which converts analog voice signal into pulse density modulation (PDM) output for further digital signal processing.  shows the design of a triple-mode switched-capacitor sigma-delta modulator for speech codec. High mode (20 kHz signal bandwidth), low mode (4 kHz signal bandwidth), and sleep mode are implemented by addressing a flexible operation current. In order to realize a fully integrated solution, por management circuits dedicated to the modulator are also implemented, which includes frequency detector, LDO, bandgap and reference voltage buffers. The ASIC is fabricated in a 0.18-um CMOS process. In high mode measurement, an A-ighted signal-to-noise ratio (SNR) of 78 dB with \u22122.5 dBFS input is achieved under 138 uA. In low mode measurement, an SNR of 78 dB with \u22122 dBFS is achieved under 100 uA. In the standby condition, a sleep mode with current less than 10 uA is realized, so that the battery life is extended."}]