setRate method
rate
Play rate, default AudioRate.rate100 is 1.0
Implementation
Future<String> setRate(AudioRate rate) async {
if (_preprocessing().isNotEmpty) return _preprocessing();
const _rates = [0.5, 0.75, 1, 1.5, 1.75, 2];
rate = rate;
double _rate = _rates[rate.index].toDouble();
return await _channel.invokeMethod("rate", {"rate": _rate});
}