Electret mic and Goertzel ?
Rayman
Posts: 13,861
Anybody get an electret mic working with P2 yet?
Think this circuit is right?
I'd love to be able to reproduce the @"Phil Pilgrim (PhiPi)" Goertzel speech recognition.
https://forums.parallax.com/discussion/115725/goertzel-based-speech-recognizer-now-with-source-code/
Maybe can be done better with P2?
Maybe can use smart pins to help?
Thinking could use up to 7 smart pins to monitor the ADC output of the same physical I/O pin...
That might be overkill though. Maybe better to just use software?
Comments
That schematic looks right.
Yes, the Goertzel could monitor for certain frequencies, or a sequence of frequencies. Whistling a certain tune could open a lock.