MemberJune 3, 2021 at 11:58 am
@elliottdesigns – It can do limited, but when you compare the two, they are different classes. For example, there is more storage on the 1467 and it can do around just under 6x the instructions per sample. What this means, in part, is if you do not have the phase set correctly, you can do a much longer time delay to a channel off of the chip, thereby allowing for more forgiveness in your designs when using as an active crossover. It can use more advanced FIR filters, which also helps, as it can process more double precision per second, significantly more, which makes this night and day different.
And you are correct. Hell, I’m using the JAB5 boards because of the capabilities of the ADAU1701. It is in a lot of products and is a good chip. But Analog’s next gen chips are really that much better. Double the cost, and has to have the codec chip integrated separately, which increases costs, but it is a beast in comparison.
This is compared to their Sharc products and last generation (1401 for auto and 1701 for home) products. That doesn’t mean their other products are bad at all. Just wanted to mention the shear power of this new generation. With that said, all that are floating around are two or three different main variants of the developer boards at the minute, most being 8-channels. So if you use this as an active crossover, you can run stereo 3 or 4 channel speakers. Or you can use this to fine tune what is needed, then reverse engineer to a passive crossover for a home theater system, then use this as a DSP for the entire HTS.
Just want to be clear, I’m not speaking to what the ADAU1701 is capable of, which is still a fair amount. Instead, I am highlighting what the new generation is capable of, which is significant.
I include three links below, the first is a table from analog comparing specs, the second is the spec and product overview page for the 1467, and the third is a forum discussion on the ADAU1701 from years ago regarding autoEQ that I found to be a good read.