Hey folks,
I'm one of those old folks that know a little about a lot of things, so be nice.
I have a project that requires what the title says.
"I need to turn on something when there is sound coming from a speaker."
One of the first considerations is cost, as I am hoping to manufacture a sizable quantity of devices utilizing this function.
My first thought was to utilize the speaker voltage directly, and then I turned to the sound itself being detected and amplified to the point of firing the relay.
Am I missing something ?
Is there a simpler solution that could cost less ?
Thanx,
Grampa Rich (not Rich Grampa as my kids think)
I'm one of those old folks that know a little about a lot of things, so be nice.
I have a project that requires what the title says.
"I need to turn on something when there is sound coming from a speaker."
One of the first considerations is cost, as I am hoping to manufacture a sizable quantity of devices utilizing this function.
My first thought was to utilize the speaker voltage directly, and then I turned to the sound itself being detected and amplified to the point of firing the relay.
Am I missing something ?
Is there a simpler solution that could cost less ?
Thanx,
Grampa Rich (not Rich Grampa as my kids think)