Search found 10 matches

by duncanh
Thu Aug 24, 2017 3:43 am
Forum: Stereo soundcard for the Raspberry Pi
Topic: Audio injector zero kickstarter is live !
Replies: 22
Views: 7193

Re: Audio injector zero kickstarter is live !

And if you're after on board mics then these Knowles ones might be interesting, picking up to 80khz at least
by duncanh
Wed Aug 23, 2017 4:54 pm
Forum: Stereo soundcard for the Raspberry Pi
Topic: Audio injector zero kickstarter is live !
Replies: 22
Views: 7193

Re: Audio injector zero kickstarter is live !

The current mic I'm using is one of these electrets
by duncanh
Sat Aug 19, 2017 6:03 pm
Forum: Stereo soundcard for the Raspberry Pi
Topic: Audio injector zero kickstarter is live !
Replies: 22
Views: 7193

Re: Audio injector zero kickstarter is live !

Good news. I managed to find one of the old Cirrus cards to work with but they're difficult to find and can be tricky to set up.

Duncan
by duncanh
Wed Aug 09, 2017 8:10 am
Forum: Stereo soundcard for the Raspberry Pi
Topic: Click at start of mic recording
Replies: 2
Views: 1933

Re: Click at start of mic recording

Thanks. I'm away until next week but will try it when I get back
by duncanh
Wed Aug 02, 2017 7:16 am
Forum: Stereo soundcard for the Raspberry Pi
Topic: Click at start of mic recording
Replies: 2
Views: 1933

Click at start of mic recording

Hello Everything seems to be set up and working well except I get an audible click when recording from my mic. It's a small electret soldered to a wire approx 30cm long connected to a screw terminal which I soldered to the board. The click lasts for approx. 0.75 seconds and then the rest of the reco...
by duncanh
Tue Aug 01, 2017 4:29 pm
Forum: Stereo soundcard for the Raspberry Pi
Topic: Audio injector zero kickstarter is live !
Replies: 22
Views: 7193

Re: Audio injector zero kickstarter is live !

Thanks for the reply, I'm looking forward to reading about it.
by duncanh
Thu Jul 27, 2017 5:22 am
Forum: Stereo soundcard for the Raspberry Pi
Topic: Audio injector zero kickstarter is live !
Replies: 22
Views: 7193

Re: Audio injector zero kickstarter is live !

And the reason for it all - I do a few bat surveys for an ecology company (I work for a wildlife trust so do lots of wildlife work) and this detector seamed like a cheap way to learn more about bats - this type of kit usually costs a lot
by duncanh
Thu Jul 27, 2017 5:16 am
Forum: Stereo soundcard for the Raspberry Pi
Topic: Audio injector zero kickstarter is live !
Replies: 22
Views: 7193

Re: Audio injector zero kickstarter is live !

I'm new to it all really, but I found this detector and thought I'd try making it. It should probably more be called a recorder. It's likely to do various things, but the main one seams to be recording ultrasound (UK bats tend to be low 20kHz up to just over 100kHz but in the area I live they're gen...
by duncanh
Thu Jul 27, 2017 1:55 am
Forum: Stereo soundcard for the Raspberry Pi
Topic: Audio injector zero kickstarter is live !
Replies: 22
Views: 7193

Re: Audio injector zero kickstarter is live !

Thanks for the reply. Yes, clearly a different product.

Thanks

Duncan
by duncanh
Mon Jul 24, 2017 2:07 am
Forum: Stereo soundcard for the Raspberry Pi
Topic: Audio injector zero kickstarter is live !
Replies: 22
Views: 7193

Re: Audio injector zero kickstarter is live !

I have a stereo injector and the smaller size of the zero is appealing. However, I'm looking for something which can sample at the same rate (or faster) as the no-longer available Cirrus Logic card, which apparently supported up to 192kHz. The project I'm trying to make is a bat detector Any plans t...