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AUSpeechSynthesis.component

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AUSpeechSynthesis.component

Subject: AUSpeechSynthesis.component
From: Ryan Roberts <email@hidden>
Date: Sun, 14 Dec 2008 14:18:07 +0000

I am trying to do speech synthesis from text using Speech Synthesis Manager straight into a memory buffer. As far as I can see the Speech Synthesis Manager API itself does not provide for this. However, I've found a component in /System/Library/Components called "AUSpeechSynthesis.component" (on leopard at least). The auval utility recognizes it as an AudioUnit so I'm assuming it can be instantiated and has a property that can be passed a string.

The trouble is, there seems to be no documentation anywhere on the internet and probing various properties of the AU with AudioUnitGetPropertyInfo() / AudioUnitGetProperty() has left me none the wiser.

Can anybody give me any pointers on how to use this AU? Or better yet, an alternative method for synthesizing text into a memory buffer?


Kind Regards,
Ryan Roberts
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