MMM-AssistantMk2

Sun

@sean I would like to know more about MMM-Gaction regarding the deviceModelId - this should be done since register the device in mmm-assistantmk2. What about deviceInstanceId, where and how to?

A Former User

@sun read this page carefully.
https://developers.google.com/assistant/sdk/reference/device-registration/register-device-manual#get-access-token

A Former User

@sun But In most cases, you might not need instance, because your mirror might be only one instance of your project. Instance is needed when action should select specific device for response. Try without instanceid first.

Sun

@sean Thank you so much.

jomwells

@sean Yes, the pm2 error logs show some alsa related errors, I assume this is why the assistant doesn’t produce audio?

/home/pi/.pm2/logs/MagicMirror-error.log:

[../deps/mpg123/src/output/alsa.c:90] error: initialize_device(): cannot set format S16_LE
MESA-LOADER: failed to retrieve device information
libGL error: MESA-LOADER: failed to retrieve device information
[../deps/mpg123/src/output/alsa.c:94] error: initialize_device(): cannot set 1 channels

I have a pretty fresh install of MagicMirror so shouldn’t be an issue of too many modules, im using an RPI3, and a USB sound card, thanks
on a side note, to get the Hotword and Assistant module to choose the correct microphone, I have had to change the input device to

device: 'plughw:1',

however each time I reboot, the input devices change order and I need to edit the config file again, is there a way to stop them changing device number?

A Former User

@jomwells
Frankly says, I’m not an expert of system administration. Especially Alsa configuration is out of my ability.
Anyway you should success this test.

arecord -d 10 test.wav & aplay test.wav

It should record your voice and play again.

It means, your mic and speaker should be default device.

jomwells

To anyone having issues with RPI3 and a USB sound card, the solution to this was to change ‘/home/pi/.asoundrc’ to:

pcm.!default {
  type plug
  slave {
    pcm "hw:1,0"
  }
}

ctl.!default {
    type hw
    card 1
}

(where the USB device is card 1)
Thank you @Sean for your help, it is now working brilliantly, this is by far the best voice assistant module for MM!
Is there any way to configure how long the result card displays on screen before hiding itself? If not, could this be added in a later version? thanks!

A Former User

@jomwells
Card display time is decided by card itself. Maybe I can hook the duration, but with some painful effort, not even clearly.
The card itself is hardcoded, so there isn’t enough margin to manipulate. Originally the card would be planned to be used on specific device - smart tv, so ours has some limitation for full usage.
For example, In smart tv, a user can decide to play or not the result of a YouTube search by remote controller, but we haven’t. That is why I implement YouTube player in this module. Other functions are the same.

jomwells

@sean Ah I see, its not essential at all! one minor bug I seem to have, that I have noticed does not occur for you in your demonstration video is that now, having finished the audio reply, there is often a very short sound, it sounds like the last half a second of text is repeated, sometimes it is more of a ‘buzz’, I attempted changing the encodingOut setting to one of the other options (MP3 or OPUS_IN_OGG) but both of these just give white noise (like an old tv with no signal) in place of any audio, is this something you have come across at all, and is there anything you can suggest to fix it? maybe getting the alternative encoding to work? thanks

A Former User

@jomwells
I’m not sure.
Voice output is just buffered stream, so just piping it to the speaker is all of mechanism. So at the moment I have no idea why last data is duplicated(?) in your environment.
Voice output stream comes chunked, so there is some possibility of the time gap between incoming stream chunks.

Maybe instead piping Linear16 to speaker directly, writing response stream to mp3(or ogg) file then playing that file could be one of solutions.(sorry, I didn’t implement that)