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1.6.2
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Contents
Status
written 21 October 2014
Author
Jeanne Spellman
Success Criteria
1.6.2 Speech Pitch and Range: If synthesized speech is produced, the user can specify the following if offered by the speech synthesizer: (Level AA)
- Pitch (average frequency of the speaking voice)
- Pitch range (variation in average frequency)
Note: Because the technical implementations of text to speech engines vary (e.g. formant-based synthesis, concatenative synthesis), a specific engine may not support varying pitch or pitch range. A user agent should expose the availability of pitch and pitch range control if the currently selected or installed text to speech engine offers this capability.
Tests
Test Procedure 1
- Determine if the user agent produces synthesized speech. If not, select Not Applicable.
- Identify methods of adjusting features of the synthesized speech. (e.g. by exploring the UI or consulting Help documentation).
- Open a test document that contains text.
Sample HTML test document: Text Customization - Listen to the speech qualities of some of the text.
- Adjust these qualities of the speech produced so that you will be able to hear the difference:
- Pitch
- Pitch Range
- Check that the synthesized speech produced conforms to these new settings.
Expected Results 1
- Check #6 is true