Comments on: Drawing Waveforms

By: GW Rodriguez

GW Rodriguez — Tue, 24 May 2011 21:56:31 +0000

This post is great! Got one questions, above he mentioned that he kept the data set of the maximum zoom (50 samples per pixel) and later he say's that he uses CGPoints. I am curios as to how to keep all that data in a nice neat place?

I am assuming its an array of CGPoints but how do you define such an array with a variable and unknown element size?

Thanks GW

By: Audio recording and wave form drawing on ios | Applerr.com All about Apple Products

Wed, 20 Apr 2011 10:21:53 +0000

[...] and after recording I want to draw a wave form of the recorded audio. I’ve found a nice article about wave form drawing, but it first I need the frequencies at a certain sample rate as floats, [...]

By: Jared

Jared — Wed, 16 Feb 2011 03:21:34 +0000

Arrived via a pointer Volker dropped into Apple dev forums; so nice of each of you to take the time to help people understand this stuff.

By: John Myers

John Myers — Tue, 02 Nov 2010 06:34:22 +0000

Can you elaborate on the ExtAudioFile extraction process? Specifically, specifying your desired client format? I can get the data out but it seems to be random numbers which I suspect is because I am interpreting it wrong.

By: Bastian

Bastian — Fri, 26 Mar 2010 17:27:46 +0000

Your post just solved a huge problem I was struggling with for the last few days. Thanks a lot!

(There really is not too much information out there on these topics)