SpectroMic is a charge domain MEMs microphone with a smart activity detector which also converts sounds to a spectral image which can be analyzed by a connected AI engine.  SpectroMic draws only 19uA while listening, and can be setup to allow amplitude and frequency based interrupt triggering.  This  allows operation in noisy environments, minimizing false triggering compared to competitive systems.  Spectral conversion and activity detection is one of the most power intensive parts of key word and sound recognition systems.   Digital KWS systems can use hundreds of microamps to milliamps trying to detect such sounds, and suffer from significant false triggering on noise.  SpectroMic offers:  i) a high SNR microphone membrane; ii) a frequency and amplitude discerning activity engine; iii) 19uA always on current; iv) sound to spectral conversion with digital output; v) a programmable gain amplifier (PGA); vi) charge pump and interface components; vii) SPI interface; viii) on board 1.8v to 1.2v LDO regulator.  The AIS240A will operate with a supply voltage as low as 1.2V, and has an on board regulator for a 1.8V supply outputting 1.2V.   It is available in a 14 pin 5.4×5.4mm microphone package.