US Patent:
20190349697, Nov 14, 2019
Inventors:
- Chicago IL, US
Charles B. Harmke - Huntley IL, US
Ellis A. Pinder - Davie FL, US
International Classification:
H04R 29/00
G08B 21/18
Abstract:
Systems and methods for validating the operation of a transducer and an audio signal path to the transducer. An example method includes switching, with an audio switch, the audio signal path between an audio power amplifier and an analog-to-digital converter. The method includes routing an audio signal received from the transducer to the analog-to-digital converter when the audio power amplifier is not enabled. The method includes, upon receiving a button signal, processing, with an electronic processor, a digital version of the audio signal received from the analog-to-digital converter to generate a sample. The method includes comparing the sample to a reference audio sample. The method includes generating an alert when the sample does not match the reference audio sample.