Saturday, 9 March 2019

How to boost audio volume coming from a telephone


So I have this circuitry


Circuitry


Purpose is to connect the soundcard with a telephone to also play computer generated samples over phone.


It works with one drawback: The Headset's speaker is low volume. How to boost the Headset's speaker's volume? When picking up the telephone handset the volume is high enough but using the Headset's speaker it isn't.



  • 4p4c goes to a telephone plug

  • LSteil means the part of the telephone that emits audio data, ie the speaker


  • Mikroteil means the part of the telephone that receives what is being spoken ie the microphone

  • KopfhörerEingang goes to a Socket to put a Headset's headphones plug in

  • the connector at the bottommost goes into the headphones output at a computer's soundcard

  • Übertrager 1:6 is an audio transformer/transducer

  • Masse is ground

  • Links is left

  • Rechts is right

  • Signal is signal




No comments:

Post a Comment

arduino - Can I use TI's cc2541 BLE as micro controller to perform operations/ processing instead of ATmega328P AU to save cost?

I am using arduino pro mini (which contains Atmega328p AU ) along with cc2541(HM-10) to process and transfer data over BLE to smartphone. I...