Some questions about sigmastudio

drugoimir Question

Dec 18, 2012 00:00

Hi everybody,

i have some questions / bug reporting about sigmastudio:

-why on the download page, while i see that in the readme.rtf the latest sigmastudio version is 3.8.2, when

i download it is still 3.7?

-i cannot expand the probe window frequency axis above 22khz...often i work above this frequency and i

don't know how to do.

-it seems that the strings are too long (or the fonts too big) in ADAU1442 hardware configuration page (see attached picture).

The fact is that it's very annoying to use the tool in this way.

-about the "window zoom" issue: once you had to restore 100% from the view menu, now you have to press ctrl+shift+f6.

Wouldn't it be possible to correctly quantize the zoom steps so that i can go back to 100% using the wheel (actually i can

get back to 99.3145% or 101.075%) or just have a "reset view" command under the right-click popup menu?

Many thanks!

Tom

Audio Signal Processors

adau1442

SigmaDSP Audio Processors

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KJBob Reply

Dec 22, 2012 00:00

Hi Tom,

A workaround to get high-frequency Stimulus-Probe simulations is to build your filters at 48KHz sample rate (1/2 or 1/4 your final sample rate), setting them to 1/2 or 1/4 their desired frequencies respectively . Use Stimulus-Probe to view and tweak your filters as desired. When satisfied with your filters, reset your sample rate to 96 or 192K, and multiply all your frequencies by 2 or 4. Q's remain the same, as do FIR coefficient arrays.

Bob

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drugoimir Reply

Dec 25, 2012 00:00

Thanks Bob,

yes, it obviously works but i often use external tools, like matlab, to design my filters and it's very annoying to have to try them in such a way.

Anyway, many thanks !

Tom

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KJBob Reply

Jun 24, 2013 00:00

Hi Tom,

Stimulus / Probe now runs up to fs/2 in v3.9 Beta. There may still be issues with the x-axis showing 1/2 or 1/4 the correct frequency, but that's much easier to work around.

Bob

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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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