Hi folks,
I need a way to hear the audio frequencies produced by today's electronic devices. I'm almost deaf as a post to the tones they produce. I don't have one of those expensive hearing aids yet nor can I replace all the beepers in my house. Any ideas?
Just some thoughts and none of this is intended to be humorous.
A microphone and amplifier to serve as a hearing aid of sorts.
Add filters or graphic equalizers to the above to be more selective.
Add some kind of flasher to the output of the amplifier - with a threshold level. Random blinks would suggest accidental trips - a periodic pattern might be the beeper(s).
A variation of the above might be to tirgger a beeper that is at a frequency that you can hear.
Add a tone decoder that matches the beeper frequency - possibly several. I think a 567 is a decoder but I may be remembering it wrong.
A little far fetched but maybe not - feed audio into your computer sound card and have software that would "recognize" the pattern of beepers.
Place small mic/amp right at the source or beeper with flashing light on output that would respond to that beeper.