Digitally Controlled Audio Splitter Switch

  • Thread starter Thread starter preston8
  • Start date Start date
  • Tags Tags
    Audio Switch
Click For Summary
SUMMARY

The discussion focuses on creating a digitally controlled audio splitter switch using a Raspberry Pi to manage intercom signals for eight different rooms. The user intends to develop a touch-screen interface that allows selection of individual rooms or broadcasting to all simultaneously. The setup involves amplifying a microphone signal and outputting it through a 3.5mm jack to a splitter, potentially utilizing GPIO pins for signal management. The LE-D Airphone intercom substation is identified as the receiving device.

PREREQUISITES
  • Understanding of Raspberry Pi GPIO pin functionality
  • Knowledge of audio signal amplification techniques
  • Familiarity with 3.5mm audio output connections
  • Basic concepts of intercom systems, specifically the LE-D Airphone model
NEXT STEPS
  • Research Raspberry Pi audio output configurations
  • Explore audio amplification circuits compatible with Raspberry Pi
  • Investigate GPIO pin programming for audio signal control
  • Learn about interfacing with the LE-D Airphone intercom substation
USEFUL FOR

This discussion is beneficial for hobbyists, audio engineers, and developers interested in building intercom systems using Raspberry Pi technology.

preston8
Messages
18
Reaction score
0
Hello,

I'm needing to send an intercom signal from a lobby to one of eight different rooms. I am creating a touch-screen interface with a Raspberry Pi under the hood that acts as an intercom. The user needs to be able to select any room they wish to speak to (even all of them at the same time). The receiving end is a LE-D Airphone intercom substation:

Manual
http://www.aiphone.com/home/assets/Uploads/downloads/documents/products/instructions/LE-D,%20LE-DA%20Instr.pdf

I'm going to use the Raspberry Pi to accept and amplify a microphone signal before sending the signal out through the 3.5mm output port to a splitter of some sort.

Are there any devices I can make or buy that would do this?
 
Engineering news on Phys.org
Could you use the GPIO pins on the Pi to send out your signals?
You could either to DtoA on the pi and then amplify the signals to the rooms or run the pins to an AtoD chip and then do the amplification.