On Dec 28, 2014, at 12:05 PM, Raglan T. Tiger <[email protected]> wrote: > > Is it possible with Cocoa to generate a tone of a specified frequency and > duration to play synchronously? > > > -rags >
You can use Audio Unit Framework from Objective-C or Swift to generate sound on the fly. For example, a sine wave of a specific frequency and duration. There used to be a really good example (sample code) of this in the developer library, but it seems to have been removed, and some supporting functions deprecated in favor of doing things the iOS way. There is a much more complicated example in the developer library now but it’s not clear how this would be used in a stand-alone program (i.e., not an AU plug-in). I’ve created an application for both iOS and OS X that uses Audio Unit Framework to generate sounds. If I can find the time to rip out the essentials in a stand-alone demo (I cannot give away proprietary code), then I’ll pass it along. In the meantime this link is what the working code is based on: https://developer.apple.com/library/mac/documentation/AudioUnit/Reference/AudioUnit_Framework/_index.html Paul
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