Apple

Hello,

This is my first post to the list but I’m a long time listener.

I’d like to share an open source project just completed, called audioGraph.

http://zerokidz.com/audiograph

video demo at: http://www.youtube.com/watch?v=ApJktPS02-Q

the free-app version is awaiting review from app store.

Have fun. thanks. tz

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From the README file:

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iOS audio processing graph demonstration

AudioGraph is a superset of Apple's MixerHost application.

Features include:

* Mono and stereo mic/line input
* Audio effects including:
     o Ring modulator
     o FFT passthrough using the Accelerate vDSP framework.
     o Real-time variable pitch shifting and detection using STFT
     o Simple variable speed delay using a ring buffer
     o Recursive moving average filter with variable number of points
     o Convolution example with variable filter cutoff frequency
* Stereo level meter
* Synthesizer example - sine wave with an envelope generator
* iOS 5 features (from Chris Adamson) including:
     o MIDI sampler audio unit
     o file player audio unit
     o audio unit effects
* Runs on iPad, iPhone, and iPod-Touch
* Basic audio session management including detection of input devices and available channels
* Commented source code.
* Original music by Van Lawton
* Plus everything from MixerHost

Requirements:

* A device that runs iOS 5.x
* Headphones.

Instructions:

Launch the app and press Play.
Source code, documentation, support:

http://zerokidz.com/audiograph
email@hidden

Credits:

This project is derived from work by:

Chris Adamson
Stefan Bernsee
Michael Tyson
Stephen Smith
Contributors to the Apple Core-Audio mailing list
Contributors to stackoverflow.com
Apple's IOS developer program

Thank you.

Tom Zicarelli

12/4/2011