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Post by rodney on Nov 25, 2019 6:49:30 GMT
I can't find out yet what spectrum ranges are available for this device.
It is intended for RF but might be persuaded to do audio.
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Post by lukylutte on Nov 25, 2019 8:27:22 GMT
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Post by rodney on Nov 25, 2019 22:36:24 GMT
Can run on 5v, by the look of it.
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Lugia
Wiki Editors
Ridiculously busy...ish.
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Post by Lugia on Nov 25, 2019 22:50:27 GMT
The Banggood display probably can't be used for audio without some considerable modification. It's apparently designed for scanning the 2.4 GHz wifi spectrum's 200 MHz span, probably wants to see RF signals at a much lower voltage than typical synth-level signals.
Now, that audio spectrum display is more along the right lines...but what's _really_ needed in a display of that sort to make it useful for synthesis work would be a waterfall display, showing changes in amplitude across the AF spectrum across a specific interval of time. That way, you can observe what's going on as different partials decay at different rates, how modulation and/or effects are altering a signal, and so on. I'm betting that something like that should exist, although it'll be a lot rarer (and more expensive) than the basic eye-candy RTA-type display that's there.
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Post by rodney on Nov 26, 2019 3:57:52 GMT
just ordered one - will report back once it is installed.  |
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Post by rodney on Nov 26, 2019 3:59:49 GMT
The Banggood display probably can't be used for audio without some considerable modification. It's apparently designed for scanning the 2.4 GHz wifi spectrum's 200 MHz span, probably wants to see RF signals at a much lower voltage than typical synth-level signals.
Now, that audio spectrum display is more along the right lines...but what's _really_ needed in a display of that sort to make it useful for synthesis work would be a waterfall display, showing changes in amplitude across the AF spectrum across a specific interval of time. That way, you can observe what's going on as different partials decay at different rates, how modulation and/or effects are altering a signal, and so on. I'm betting that something like that should exist, although it'll be a lot rarer (and more expensive) than the basic eye-candy RTA-type display that's there.
Yes, a waterfall display would be wonderful. Perhaps a teensy 3.2 would have enough grunt for that. I'll investigate.
Meanwhile, I'm for the eye-candy!  |
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Post by slowscape on Nov 26, 2019 20:02:01 GMT
Yesss a waterfall would be awesome
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Post by rodney on Nov 27, 2019 0:44:55 GMT
Yesss a waterfall would be awesome I'm guessing a Pi Zero would be the easiest thing to make a live 3D graph like that (maybe even PureData and one of its associated graphics libraries?) |
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Post by rodney on Nov 27, 2019 0:47:16 GMT
The Banggood display probably can't be used for audio without some considerable modification. It's apparently designed for scanning the 2.4 GHz wifi spectrum's 200 MHz span, probably wants to see RF signals at a much lower voltage than typical synth-level signals.
Now, that audio spectrum display is more along the right lines...but what's _really_ needed in a display of that sort to make it useful for synthesis work would be a waterfall display, showing changes in amplitude across the AF spectrum across a specific interval of time. That way, you can observe what's going on as different partials decay at different rates, how modulation and/or effects are altering a signal, and so on. I'm betting that something like that should exist, although it'll be a lot rarer (and more expensive) than the basic eye-candy RTA-type display that's there.
The RF one gets me thinking about pointing a camera at it and using WiFi plots for some pixel-based scan-synthesis. |
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andy
New Member
Posts: 38
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Post by andy on Nov 28, 2019 11:57:09 GMT
Following the link to the LANTIANRC thingy I stumbled upon this one and couldn't resist the temptation, so I ordered it yesterday: www.banggood.com/Lusya-NEW-MINI-0_96-Inch-OLED-Spectrum-Display-Analyzer-Dual-Channel-Color-Music-Spectrum-Display-Module-G4-003-p-1587917.html?rmmds=detail-left-hotproducts__2&cur_warehouse=CNTakes 5v input (USB is one option, but can also be fed directly from AEM via the respective pin, or 12v if you are an eurorack guy/gal), two channels, so both mono and stereo mode, has a 3.5mm jack socket. 50Hz - 18kHz, which is just about perfect for audio purposes. I find the OLED display lovely. I guess if you shave the sides of its plastic case a bit, you could probably fit two of these vertically in 1U space in the AEM. Or if you leave it as it is, it would probably just sit nicely on the edges of the adjacent modules. I don't mind it sitting vertical, I am running a small sequencer that way, but if you are OK with wasting 2U space, you can stack three of these on top of each other and take the looks of your AEM a step closer to Star Trek standards Of course it will take probably a couple of years to make it from China to Bulgaria, so if I am still alive when it shows up, I'll do some testing and let you good people know whether it's of any use... |
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Post by rodney on Nov 29, 2019 3:26:05 GMT
Of course it will take probably a couple of years to make it from China to Bulgaria, so if I am still alive when it shows up, I'll do some testing and let you good people know whether it's of any use... I feel your pain! definitely the case when I lived in Tasmania. |
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