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Gear / Technical Help => Recording Gear => Topic started by: heathen on January 08, 2019, 10:50:10 PM
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For a while I've been toying with the idea of a Raspberry Pi as a bit bucket, which is certainly not a novel idea. I recently got the last piece I needed to try it out, and tonight I successfully tested it running eight channels. My setup was purely a "proof of concept" sort of thing, and by no means ready for field use as-is. Now that I know it can work, though, I'll probably take the next step of trying to get it into the field. Here was my test setup:
* 8 mics running into a Zoom F8 in USB interface mode
* USB cable from the F8 to the Raspberry Pi 3
* Raspberry Pi connected to the official Pi touchscreen and a USB keyboard
* Pi powered with wall wart
I was able to record all eight tracks at 16/48 on the Pi using Audacity. For the moment I am not quite sure how to change to 24-bit. It might require using different software, or I may have just not found the right setting yet. Or maybe it's not possible at all with this setup. I didn't try a higher sample rate, but Audacity gave the option.
Anyway, I don't know if this is all that interesting, but it's a fun little project that I'm finding mildly amusing.
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Not really convinced by the sonic qualities (e.g. shielding) of the RPi. But you might want to consider running something like ecasound (https://ecasound.seul.org/ecasound/Documentation/examples.html) from the shell (or even remotely via SSH from your phone). It's capable of recording in 24 bit and would remove the need for the USB keyboard and the touchscreen.
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For a while I've been toying with the idea of a Raspberry Pi as a bit bucket, which is certainly not a novel idea. I recently got the last piece I needed to try it out, and tonight I successfully tested it running eight channels. My setup was purely a "proof of concept" sort of thing, and by no means ready for field use as-is. Now that I know it can work, though, I'll probably take the next step of trying to get it into the field. Here was my test setup:
* 8 mics running into a Zoom F8 in USB interface mode
* USB cable from the F8 to the Raspberry Pi 3
* Raspberry Pi connected to the official Pi touchscreen and a USB keyboard
* Pi powered with wall wart
I was able to record all eight tracks at 16/48 on the Pi using Audacity. For the moment I am not quite sure how to change to 24-bit. It might require using different software, or I may have just not found the right setting yet. Or maybe it's not possible at all with this setup. I didn't try a higher sample rate, but Audacity gave the option.
Anyway, I don't know if this is all that interesting, but it's a fun little project that I'm finding mildly amusing.
That is actually very interesting. I've been wanting to mess w/ a Pi for sorta same purposes.
Fairly certain that the next-gen recorder we all want is gonna come from TS.com. Will be modular to fit everyone.
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Using a pi3 with an ECHO2 every now and then, controlling the pi3 over wifi from an iPhone.
It works nicely with alsa and 'sox' [which does the actual recording], all from commandline using a simple shell script.
One thing needed to fix dropouts in writes to the SDcard was to set the I/O scheduler to 'cfq' mode.
Also, have to keep the pi3 a bit away from mic.cables/echo2 because the wifi signal is quite strong and noticable in the signal.
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Good to know there are others working on a Pi recorder. I am working on a pi zero bit bucket for my V3 also using Sox. I’ll have to make a post if I end up doing anything that works out.
How was setting up the Pi the record with a usb audio device?
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Good to know there are others working on a Pi recorder. I am working on a pi zero bit bucket for my V3 also using Sox. I’ll have to make a post if I end up doing anything that works out.
How was setting up the Pi the record with a usb audio device?
It was pretty much just plug and play. Really easy, to the point that it hardly felt like I accomplished anything. It might be different with another USB device, but I'm just speculating there.
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This is nothing I’d attempt but a picture of one In Action would ld be cool.
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Fascinating!
If only the F8 maintained full 100% functionality in all ways while being a USB interface, then this would be a great solution for a quick and cheap back up of everything.
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i will get a tiny usb mixer that has a usb interface, and try to add a raspberry pi zero w to it for a "integrated recorder" (and run everything from batteries)
but, how limited are those portable recorders when using usb interface for recording?
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i will get a tiny usb mixer that has a usb interface, and try to add a raspberry pi zero w to it for a "integrated recorder" (and run everything from batteries)
but, how limited are those portable recorders when using usb interface for recording?
I apologize but I don't understand your question.
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This is nothing I’d attempt but a picture of one In Action would ld be cool.
Recording a reconstructed french baroque pipe organ.
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This is nothing I’d attempt but a picture of one In Action would ld be cool.
Recording a reconstructed french baroque pipe organ.
Cool. Omni's on floor for boundary effect?
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This is nothing I’d attempt but a picture of one In Action would ld be cool.
Recording a reconstructed french baroque pipe organ.
Earthworks omnis?
Would you please give us a hardware list?
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I apologize but I don't understand your question.
"If only the F8 maintained full 100% functionality in all ways while being a USB interface"
what functionalities are lost when using usb interface?
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This is nothing I’d attempt but a picture of one In Action would ld be cool.
Recording a reconstructed french baroque pipe organ.
Earthworks omnis?
Would you please give us a hardware list?
No, not Earthworks; found these in a music shop, they look like a silver colored version of the 'Monheim omnis'.
They turn out to be quite useful, some lift at 10kHz and less noisy than Superlux ECM999.
Chain: omnis @36cmAB angled out +-20' -> ECHO2 -> RaspPI3; powered by usb.battery [10.000mAh, runs for hours].