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Re: Basic sample code for FFT audio frequency spectrum?
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Re: Basic sample code for FFT audio frequency spectrum?


  • Subject: Re: Basic sample code for FFT audio frequency spectrum?
  • From: Cynthia Maxwell <email@hidden>
  • Date: Wed, 4 Jul 2007 12:19:39 -0700

Hey all, 

There is some sample code for doing exactly this is the WWDC Devleoper's seed of Leopard. 
in /Developer/Examples/Audio/SimpleSDK/SonogramViewDemo

There are some kinks in that version, but a better one will be included in Leopard along with documentation.

FYI, there are a couple of new classes included in PublicUtility in Leopard what will make forward and inverse FFT's very easy to do.

More to come,
Cynthia



On Jul 4, 2007, at 12:03 PM, email@hidden wrote:

Message: 2

Date: Tue, 3 Jul 2007 22:04:22 -0400

From: IgnisFatuus <email@hidden>

Subject: Basic sample code for FFT audio frequency spectrum?

To: email@hidden

Message-ID: <email@hidden">email@hidden>

Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed


Hello all,


I am looking and am still looking for some basic foundation sample

code to where I can load an audio file, press the button, and have the

frequency spectrum of the audio in a window in an NSView. Just the  

basics so

I can understand the process involved.


Then once I have a foundation understanding, i'll add multiple  

tracks, to view

for mixing purposes layered in an NSView of how the frequency  

spectrum of

individual tracks relate to each other.


Thanks for any feedback.



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