adau1446 white noise

SigmaDSP & SigmaStudio tek66tim Jun 7, 2013 00:00 3 replies Original on forum ↗

tek66tim Question

Jun 7, 2013 00:00

Hi,

I'm starting a design for a speech privacy system and my customer needs white noise sources that will run for a minimum of 215 hours without repeating. Is this possible on the 1446 chip, if so how do I set up the white noise generator for this?

Thanks,

Tim

Audio Signal Processors

adau1446

SigmaDSP Audio Processors

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ADIApproved Reply

Jun 8, 2013 00:00

Hi Tim:

One of the current white noise implementation allows user to enter a seed. If the periodicity provided is not sufficient for one algorithm. You can always multiply 2 of them that use a different seed (a separate prime number for both would be best).

Miguel

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tek66tim Reply

Jun 8, 2013 00:00

Thanks Miguel,

Can you tell me how to calculate this (the period) based on how the 1446 generates the noise. I put one of the white noise sources with seed in my design, but I don't see a place to enter the seed value. It looks like Sigma Studio is generating a different number for this value every time it's switched off then on from the Sigma Studio GUI.

Thanks,

Tim

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EZAdministrator Reply

Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

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