Tyler Heshka
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Background audio over existing business infrastructure

Tyler Heshka · https://heshka.com/work/casebook/background-audio

Work / 11

  • System Trace
  • Audio · Telephony · Physical infrastructure
  • 1 min read

I built a background-music application that connects an online audio stream to an existing PA system.

Tyler Heshka

Projects in this story

My part

Application development, telephony/PA configuration and audio-system integration.

  1. Online audio source
  2. Custom application

    Select source · Start / stop · Scheduled restart

  3. Audio format conversion
  4. RTP multicast
    Local listening
  5. PA paging adapter
    PBXPA paging adapterExtension connection

    Configured priority: emergency alerts above background music

  6. Amplifier
  7. PA speakers
From an online audio source to existing PA speakers, with a paging adapter connecting the network and physical audio system.

01

An online stream, existing speakers

The network and PA system were already in place. I built the background-music application, configured its server environment and connected it to the receiving equipment.

An operator can choose a station or enter a stream address. The application checks the address format and checks web-stream reachability before starting.

02

The paging adapter makes the connection

I used VLC to convert the incoming audio and send it as an RTP multicast stream. The PA paging adapter listens for that stream and feeds the speakers through an amplifier.

I configured the adapter, its connections to the PBX and PA/amplifier environment, and the surrounding PBX behaviour. The adapter is also a PBX extension, with emergency paging and alerts configured to take priority over background music.

03

Start, stop, listen

The application provides start and stop controls, status messages, optional local listening and a configurable scheduled restart.

Local listening can be stopped without stopping the outgoing stream.

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