I have an external amplified speaker connected to a tablet via standard mini-jack.
The amplified speaker is always connected to its power supply.
I'd like to add a circuit that when an incoming call arrives to the tablet, the incoming audio signal will trigger the circuit and make it act as an automatic power on switch for the speaker.
As long as the conversation goes on, the speaker will be powered.
After a configurable time (let's say 3 minutes) of silence, the circuit should switch the speaker amplifier back to off.
Do you know if such a circuit exist ? or someone who can build it ?
Thanks in advance!
The amplified speaker is always connected to its power supply.
I'd like to add a circuit that when an incoming call arrives to the tablet, the incoming audio signal will trigger the circuit and make it act as an automatic power on switch for the speaker.
As long as the conversation goes on, the speaker will be powered.
After a configurable time (let's say 3 minutes) of silence, the circuit should switch the speaker amplifier back to off.
Do you know if such a circuit exist ? or someone who can build it ?
Thanks in advance!