Make an exact frequency analysis (Spectrum)

j_apopo's picture

Hi, yesterday I tried to make some audio visualization not by midi, but by frequency analysis. I used the spectrum of the Audio Input and made some parameters variations of a shape. Then, the problem is that the spectrum give so many values, and they are not stable at all, they change so fast that the shape looks like "nervous". Also if you download of the many tutorials of how to make a sound spectrum, or frequency analysis, you can see that the bars are never really still, i mean they continue to move also if you send the auido by line in. Thats cause the spectrum gives so many values and they change so fast.

Someone know how to fix that?

Thank you jaco

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toneburst's picture
Re: Make an exact frequency analysis (Spectrum)

You could start by adding Smooth patches to the outputs of each frequency-bin.

a|x

franz's picture
Re: Make an exact frequency analysis (Spectrum)

You could also start by plugin your spectrum structure in an Audio Processor patch. This will give you "only" 3 parameters: Low / Med /High frequencies.

If the values are changing too fast, try lowering the "Increasing scale" on the audio input.

--- im assuming you're using the built-in patches ---

j_apopo's picture
Re: Make an exact frequency analysis (Spectrum)

Thanx guys! but the pathces you speaking about are on Quartz ona leopard (osx 10.5)? I have a tiger and the old version of Quartz and on the audio input patche I dont have an increase scale parameter. audio processor patch is a kineme patch?

franz's picture
Re: Make an exact frequency analysis (Spectrum)

try this comp for example (leopard)

if you're on tiger, you should consider upgrading --- and always specify you're using it in your posts, as 99% of QC user have switched at least to leopard.

PreviewAttachmentSize
_audio processor expl.qtz36.63 KB

j_apopo's picture
Re: Make an exact frequency analysis (Spectrum)

yes you are right sorry, then i will upgrade to leopard

thank you

SomeKid's picture
Re: Make an exact frequency analysis (Spectrum)

toneburst wrote:
You could start by adding Smooth patches to the outputs of each frequency-bin.

a|x

How do you go about grabbing the individual bins? The Bins are the 16 members coming out of the Spectrum?