Power over Ethernet Speaker

[Andy]

Version: 1
Status: Complete
License: BSD

The aim of this project was to transport both digital audio and power to a speaker using a single Ethernet cable. Transmitter/Receiver PCBs were designed and software written for the L1 64 pin device.
A lightweight software stack transmits audio from S/PDIF over Ethernet, recovers a clock at the receiver and outputs/amplifies the audio using a digital input Class D amplifier.
This project was submitted as a final year project on the MEng Computer Science & Electronics course at the University of Bristol.
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[phalt]

Can we get some demo videos up so we can see it working? :D

[lilltroll]

Any more info about it, like a thesis, github etc ?

[infiniteimprobability]

This looks brilliant - I notice it's L1 based so really looking forward to seeing how you squeezed stuff in, which protocols you are using, general specs etc. etc.

[phalt]

Do you have something you could upload for us to download and play with? Its something that could be really helpful to the community.

[xk2600]

So does this device actually transmit the audio via Framed Ethernet Protocol (DIX/802.3) or is this simply utilizing Cat5/6 8-conductor twisted pair to transmit the signal as well as power to a speaker?

[Andy]

Yes, it transmits audio via standard Ethernet packets. It's not transmitting analog audio across Cat5.

[emonticelli]

Hi Andy,
 
Great project !
Is AVB compliant ?
If not, are you working on an AVB version ?
Bye
Emanuel