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US 11,638,078 B2Granted
Microphone device and system comprising the microphone device
AssigneeCirrus Logic, Inc.
InventorJohn Paul Lesso
Life of this patent
Estimating the term…
Abstract
There is described a switchable microphone device which may be switched between a digital output mode and an analog output mode. There is further described a system for use of such a device, which allows for the switching between analog and digital computing modes.
Claims11
A switchable microphone device comprising:
- an input to receive an input analog sensor signal indicative of sound pressure received by a transducer;
- a first analog-to-digital converter (ADC) to convert the input analog sensor signal to a first converted digital signal;
- a second ADC to convert the input analog sensor signal to a second converted digital signal, wherein the second ADC has a higher bandwidth than the first ADC such that a bandwidth of the second converted digital signal is greater than a bandwidth of the first converted digital signal, wherein the switchable microphone device is configured to enable the second ADC if the first converted digital signal is indicative that the input analog sensor signal contains particular audio content.
Dependencies are inferred from the claim text.