error Piper TTS speaker parameter can't be None

[franciscosanchezn]

Some Spanish models are not multispeaker and requires sending None as --piper_speaker argument. However, current repository does not allow a null value

[p0n1]

Thanks for reporting. Did you try with the piper binary directly? How do you pass the speaker argument in command line for those Spanish models?

epub_to_audiobook/audiobook_generator/tts_providers/piper_tts_provider.py

Lines 198 to 214 in f387291

	cmd = [
	self.config.piper_path,
	"--model",
	voice_model_path,
	"--speaker",
	str(self.config.piper_speaker),
	"--noise_scale",
	str(self.config.piper_noise_scale),
	" --noise_w",
	str(self.config.piper_noise_w_scale),
	"--sentence_silence",
	str(self.config.piper_sentence_silence),
	"--length_scale",
	str(self.config.piper_length_scale),
	"-f",
	tmpfilename
	]

Looks like the piper project is similar to our current implementation.

https://github.com/rhasspy/piper/blob/6583b9ce421ac7bd46f658d72c9fc4c037d6553b/src/python_run/piper/__main__.py#L40

[franciscosanchezn]

Hi! In order to make it work locally I did the following workaround

            cmd = [
                self.config.piper_path,
                "--model",
                self.config.model_name,
                "--sentence_silence",
                str(self.config.piper_sentence_silence),
                "--length_scale",
                str(self.config.piper_length_scale),
                "-f",
                tmpfilename,
                "--debug",
            ]
            if self.config.piper_speaker:
                cmd.extend(["--speaker", str(self.config.piper_speaker)])

Because I needed to send a null value. I tried with 0 and was not working properly. With above snippet change in the provider of piper tts it worked properly every time i used it. Just wanted to report and maybe also contribute to solve it for the rest

Edit:

I will try to replicate the original error later and provide more context just to check if it was some error during the command or if it is code-related