Home Assistance Voice: Preview Edition no sound

Hi, I have bought the Voice Assistant Preview Edition. I have Home Assistant on Raspberry Pi and it easily connected over Bluetooth. I went through dialog and it smoothly configured.

I want have local setup with Whisper and Piper.

But the problem is, it plays no sound back. I tried both czech language and default English but nothing worked.

The device is doing light signal when it “speaks” but no actual sound is coming out of the Audio Out port.

Piper seems to work, here is the log:’

DEBUG:wyoming_piper.handler:Synthesize(text='Hello. How can I assist?', voice=SynthesizeVoice(name='en_GB-alan-low', language=None, speaker=None))
DEBUG:wyoming_piper.handler:synthesize: raw_text=Hello. How can I assist?, text='Hello. How can I assist?'
DEBUG:wyoming_piper.process:Stopping process for: cs_CZ-jirka-low
DEBUG:wyoming_piper.process:Starting process for: en_GB-alan-low (1/1)
DEBUG:wyoming_piper.download:Checking /data/en_GB-alan-low.onnx
DEBUG:wyoming_piper.download:Checking /data/en_GB-alan-low.onnx.json
DEBUG:wyoming_piper.process:Starting piper process: /usr/share/piper/piper args=['--model', '/data/en_GB-alan-low.onnx', '--config', '/data/en_GB-alan-low.onnx.json', '--output_dir', '/tmp/tmps56lr4qu', '--json-input', '--noise-scale', '0.667', '--length-scale', '1.0', '--noise-w', '0.333']
DEBUG:wyoming_piper.handler:input: {'text': 'Hello. How can I assist?'}
DEBUG:wyoming_piper.handler:/tmp/tmps56lr4qu/1737290254446159098.wav
DEBUG:wyoming_piper.handler:Completed request
DEBUG:wyoming_piper.handler:Sent info
DEBUG:wyoming_piper.handler:Sent info
DEBUG:wyoming_piper.handler:Synthesize(text="Sorry, I couldn't understand that", voice=SynthesizeVoice(name='en_GB-alan-low', language=None, speaker=None))
DEBUG:wyoming_piper.handler:synthesize: raw_text=Sorry, I couldn't understand that, text='Sorry, I couldn't understand that.'
DEBUG:wyoming_piper.handler:input: {'text': "Sorry, I couldn't understand that."}
DEBUG:wyoming_piper.handler:/tmp/tmps56lr4qu/1737290324427174460.wav
DEBUG:wyoming_piper.handler:Completed request

I am aware of the Troubleshooting Assist - Home Assistant and the automatically configured IP is correct so I assume it shall work.

Does anyone please have some hints how to debug it and make it work?

I should also add the trying the TTS from Settings → Voice Assistant → Local Assistant works
(but it speaks through the computer and not the Nabu device of course)

After I set the URL specifically and restarted the device one of the voices started to work (but not the other for some reason).

I am not sure if it started to work because of the restarts or the URL settings:
image

Same here. This solution should be added to the quick start guide.