If you are using the Swift command line application to process text, or almost any application that calls Swift directly, you are using our native interface.
There are several ways to affect pronunciation, and which one to use depends on how you are using the application. More information can be found on on the W3's SSML 1.0 specificiation page.
For example, with SSML, one can alter prosody attributes, such as rate, pitch, and volume, insert pauses of any length, change the speaking voice while reading, and control many other aspects of how the text is read by the synthetic voice. SSML, or Speech Synthesis Markup Language, provides users with a standardized method for controlling different aspects of speech synthesis output.
