[mickael-menu]

Added

Navigator

• PublicationSpeechSynthesizer.Configuration has new speed and pitch properties.

Changed

Navigator

• Changing PublicationSpeechSynthesizer.config while playing restarts the current utterance with the new configuration, instead of applying it from the next utterance.

[Copilot]

🟡 Changes recommended

Rapid configuration changes can leave queued speech tasks suspended indefinitely, retaining the synthesizer and publication.

1 open issue

• Ensure queued TTS replacement resumes suspended restart task · New

What changed in this PR

Adds configurable speech speed and pitch to the toolkit’s publication text-to-speech support, with controls in the TestApp.

Changes:

• Passes speed and pitch settings through to the speech engine, including rate interpolation and pitch clamping.
• Restarts the current utterance when configuration changes during playback.
• Updates the user guide and changelog.

File	Description
TestApp/​Sources/​Reader/​Common/​TTS/​TTSView.swift	Adds speed and pitch controls and enlarges the settings panel.
Sources/​Navigator/​TTS/​TTSEngine.swift	Adds speed and pitch to speech requests.
Sources/​Navigator/​TTS/​PublicationSpeechSynthesizer.swift	Exposes settings and restarts speech on configuration changes.
Sources/​Navigator/​TTS/​AVTTSEngine.swift	Converts speed multipliers to speech rates and applies pitch.
docs/​Guides/​TTS.md	Documents settings and immediate restart behavior.
CHANGELOG.md	Records the new settings and playback behavior.

_{Review effort: Balanced}