How to pack multiple audio channels to send it over a cable and cover a long distance?

Hello KKSL,

I am guessing you saw an application of the AES67 standard. All of these different standards have their advantages and disadvantages. The trick is to pick the right one to do the job for the least costs and or difficulty of design.

The basic answer to your question is Yes, A2B is designed to do a similar application. The questions I would have are things like this:

How long would you need to run?

How many channels in each direction?

What sampling rate?

What bit depth (word size)?

I will see if I can get you connected with someone in the A2B group to be able to help you with more details. Getting the answers to the above questions will help a lot.

Thanks,

Dave T

Thank you for your early reply.

1. The cable needs to run at least 90-100 ft before I can use any from of repeater/ signal booster

2. At least 10 channels in either direction

3. At least 48KHz

4. At least 24-bits.

Thank you!

While Dave is chasing that down I'll do a bit of shameless self promotion for an old article series that explains A2B: https://audioxpress.com/article/r-d-stories-getting-started-with-automotive-audio-bus-part1 (there's 4 parts).

What console did you see this on? Dante is sort of the standard for audio over ethernet over long distances. There are other AES-67 based systems out there but the details are nuanced.

The newer AD2437 A2B part can get you 30m between nodes so it's sort of at your length request.

Hello KKSL, my name is Eric and I am an applications engineer working with A2B. Our latest transceiver (AD2437) can do all of those things without the need for ethernet phys and other expensive components. With a single CAT5e or XLR cable, you can connect up to 32 channels of bidirectional 48kHz/24bit digital audio, I2C and SPI, as well as up to 50W of bus power up to 30m (100ft). I would be happy to answer any of your questions either here or via email. You might also be able to find what you need here:

https://www.analog.com/en/products/ad2437.html

Thanks,

Eric

eric.cline@analog.com

Thank you both for your replies.

Brewster: The link you sent can be a good starting point and I'll go through the article. Thanks again!

Eric: I'll go through the part you recommended.

I am in process of getting my requirements down and once that happens, I'll send an e-mail and then we can detail it out.

Thank you!!