Audio | Notion

Audio Resources:

Voice Hat and Hat Mic Schematics

Play Local Files on AIY Speaker

I had challenges with getting the local audio files to play through the AIY speaker. I met with Pedro to work through those but the fix ultimately did not work as I was not able to add my files to a particular file. For this iteration, I tested and documented the process that was previously done through office hours with Pedro. Ultimately, I was able to successfully have audio played via local commands through the AIY speaker. Below are the tests and discoveries made in the process.

Test 1: OMXPlayer

def visualization():
		say('Take some time and visualize!')
		subprocess.call('omxplayer /home/pi/Desktop/BIB_AnimalVisualization.mp3'. shell=True

This test resulted in the mp3 playing through the monitor's speakers. Also, I was not able to stop it once it had started even when I quit running the script.

Test 2: -o local

I tried setting omxplayer to play locally via -o local

def visualization():
		say('Take some time and visualize!')
		subprocess.call('omxplayer -o local /home/pi/Desktop/BIB_AnimalVisualization.mp3'. shell=True

This test resulted in the audio file playing out of the headphone jack while the text within say('Take some time and visualize!) was heard from the AIY speaker.

Test3: omxplayer -o alsa:hw:0,0 file.mp3

Tested out code provided by Pedro during an earlier office hour.

def visualization():
		say('Take some time and visualize!')
		subprocess.call('omxplayer -o alsa:hw:0,0 /home/pi/Desktop/BIB_AnimalVisualization.mp3'. shell=True