Expand description
eSpeak NG playback library
The main use of this library is to create and configure a Speaker
which in turn creates a SpeakerSource that implements a rodio::Source.
For example, here is how you would synthesize a simple phrase:
use rodio::{OutputStream, Sink};
let speaker = espeaker::Speaker::new();
let source = speaker.speak("Hello, world!");
let (_stream, stream_handle) = OutputStream::try_default().unwrap();
let sink = Sink::try_new(&stream_handle).unwrap();
sink.append(source);
sink.sleep_until_end();You can tweak the speaker’s parameters via Speaker::params.
Each change will only affect the given speaker. This is unlike
eSpeak NG’s API where a parameter change is global:
let mut speaker = espeaker::Speaker::new();
speaker.params.pitch = Some(400);
speaker.params.rate = Some(80);This library also supports callbacks that can be used when certain
speech landmarks like words or sentences are spoken.
Use the SpeakerSource::with_callback method to create a new source
that dispatches the callback:
let mut speaker = espeaker::Speaker::new();
speaker.params.rate = Some(280);
let source = speaker.speak("Hello world, goodbye!");
let source = source.with_callback(move |evt| match evt {
espeaker::Event::Word(start, _len) => {
println!("'Word at {}'", start);
}
espeaker::Event::Sentence(_) => (),
espeaker::Event::End => {
println!("'End!");
}
});