I’m not sure exactly why the reSpeaker 2-mic HAT was retired. Products are occasionally retired for a number of reasons which include:
Long lead times or intermittent availability in stock
Discontinued by the manufacturer
Superseded by a newer model
Low popularity
I can confirm they have been retired already and there is no local stock still to be cleared.
Much of that product description was published as we received it from Seeed, I agree with you that not everyone has as active forums or support lines as they would present to have, but we’ll do what we can to support you here on our forum.
I haven’t use the Adafruit voice bonnet or IQauidio codec zero myself so I can’t recommend one of those DACs. The IQaudio range are some of our newest units so I’d expect we will carry those for some time.
I’ll ask around the office and see if anyone else has worked on a voice assistant project and perhaps other members of the community will have more recommendations based on their voice assistant projects.
donald you could try email silicon chip or the other mag diyode both the aussie mags left now i think …
i`m shure i have seen something along those lines for your home assistant now from mem but cannot remember when exactly…r the original raspberry forum may give you some pointers there…
late note diy audio forum on tthe web…
If you’re satisfied with just using something else that’s great - problem solved! - though academically, I’d love to get to the bottom of it Pretty strange that the whine in the Voice Bonnet that was present earlier has disappeared!
Just to weigh in on the ground loop theory, it’s about the current draw through the traces on the PCB, not the capability of your supply - I agree the official Pi Power supply is more than capable enough!
Ground loops are a common source of hum and noise in Audio gear. The Wikipedia article on ground loops is pretty handy:
It’s even got a recording of a 50Hz hum - which is exactly what your hum will sound like if it’s being caused by interference from your house wiring:
If you’d like to figure it out, would you able to post a recording of the noise you’re hearing? It would help tremendously, a quick youtube video recorded on your phone would do.
To check whether the hum is present on the onboard 3.5mm jack you’d need to change over the audio output to that jack in software too.
If you’re happy with your solution for now, no worries - and glad we could be of some assistance!
FYI, IQAudio was actually acquired by Raspberry Pi Trading not long ago, so IQAudio products are now official Raspberry Pi gear.
Pretty strange that the whine in the Voice Bonnet that was present earlier has disappeared!
