Multichannel Delay capability of ADAU1452

Am I asking something which shouldn't be asked ?

Or is the answer so difficult to answer

Can anyone answer my question please?

you can do multichannel delay using this IC. What's your sampling rate?

This will help dictate the internal memory requirements. There is also an external SPI memory access library.

Please comment.

Miguel

48khz and I can use external memory also I think.

now much total delay do you need?

Miguel

Variable set from pot-->>0-400mS full bandwidth per channel, if possible 8 channels total

With internal memory you have 40k samples to distribute using internal memory (~1s). A newer part coming soon will allow you to do (~2s reunning @ 44.1kHz).

If this is not enough you can use external memory. although there is a bandwidth limit on how many channels you can access simultanouly using SPI.

Regards

Miguel

Thanks Miguel,

Lets suppose if I add external memory upto 1mb thru SPI interface, how to estimate the bandwidth limit or in other words how many full bandwidth channels will it support for 400mS delay per channel?

When to expect the newer part to arrive and be made available for customers to test?

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Thank you,
EZ Admin

200mS per channel, 4 channels total