18 USD pedal with Tuner, Distortion, Chorus, Phaser, Delay, Reverb, IR, USB ???

[Vivek]

How can you fit Tuner, Distortion, Chorus, Phaser, Delay, Reverb,  IR, USB Audio out, into a USD 18 pedal ?

Which chips fit into that budget ?




CUVAVE CUBE BABY

https://cuvave.en.alibaba.com/product/1600077608141-816574388/CUVAVE_Electric_Guitar_Combined_Effect_Pedal_Chorus_Phaser_Delay_Reverb_8_IR_CAB_9_AMP_Combined_Guitar_Effects_Recording_Battery.html

Steve Vai tone :
https://www.youtube.com/watch?v=MHTF7GJVwI4

[iainpunk]

i guess an STM 32x micro controller or something like that, and a simple analog distortion circuit.

cheers

[Mark Hammer]

Are you sure it isn't "Six easy payments of $18"?

[Vivek]

Their Alibaba says :

$25.00 Min. Order : 1 Piece
$23.00 50-199 Pieces
$22.00 200-499 Pieces
$18.00 ≥500 Pieces

[garcho]

Vivek, your interest seems to be more "diystompboxcompany" than "diystompboxes". 

Audio isn't going back to analog anytime soon and for making anything more than a 1-off, digital designs are much more efficient in terms of COGS. Considering how many venues have digital boards, that most audiences won't even bother paying 99¢ for a track, and that they're going to listen to music via MP3 and earbuds, the magic of analog doesn't mean much anymore anyway, at the very least, from a profitable company's point of view.

[quad4]

Wish there was an open source version of this.

Something that I could install my own software on and use the hardware.

[garcho]

^ check this out from a fellow forumite:

http://blackaddr.com/products/

[quad4]

There's also the plug style version.

https://www.thegearpage.net/board/index.php?threads/cuvave-h8-mfx-headphone-amp-tuner-usb-bluetooth-w-third-party-cab-ir-loader.2251512

[ElectricDruid]

i guess an STM 32x micro controller or something like that, and a simple analog distortion circuit.

Agree, but I very much doubt there's analog distortion in there. At that price, "features" is winning over "quality", so they've used some basic distortion generation algorithm and left it at that. And while STM32 might be what we'd use for such a job, if I was in Guangdong, I might use some Chinese uP which we've never heard of, and get it even cheaper.

[Vivek]

They did mention that their distortion is Analog

Could a STM32 do Reverb + Chorus + Delay +IR + USD Audio out, all at the same time, with different knobs to control each effect ?

[ElectricDruid]

They did mention that their distortion is Analog

Oh, ok. I stand corrected. I missed that. That's one less thing for the uP to do then!

Could a STM32 do Reverb + Chorus + Delay +IR + USD Audio out, all at the same time, with different knobs to control each effect?

Dunno, I've never tried it. If the FV-1 can do most of that running at 4MHz, then I don't see why not. I'm not sure what's involved in USB audio, but if the processor has some hardware for the USB port (and some do), that would make life a lot easier.

[garcho]

Could a STM32 do Reverb + Chorus + Delay +IR + USD Audio out, all at the same time, with different knobs to control each effect ?

The PJRC forum might be a better place to ask that but if I had to guess, I would say, yes they might be able to do all that. Using a Teensy (ARM Cortex-M7 at 600 MHz) I just made an 8-voice poly synth with 4 oscillators per voice, filter, trem, vibrato, different tunings, presets, 9 LFOs, 3 envelopes, 8 encoders, 2 pots, 20+ switches via shift register and USB host (not audio through USB a la audio interface), blah etc. and I hear no clicks, no static, no hiss, no glitches, no problems. Of course, time-based effects are heavy on the processor but again, check out Blackaddr for what can be done in pedal world. A little cheap extra memory might be all you need. I have that blackaddr teensy pedal development board but I haven't messed with it yet, that will be one of this summer's projects.
If that kind of thing entices you, you'll have to patient, what with the global chip shortage (ICs, not fried potatoes!)

[EBK]

They did mention that their distortion is Analog

My first thought: If you use shitty parts, analog distortion is free, even in an all-digital design.