A phaser with PWM, should it distort as it does?

[jrc4558]

But it might impress las senoritas de Chile though

You mean like DIY-groupies... 
I'm still waiting for this new world order to come true.

HHHHAAAAHAAAAAAA!!!!!!!!

[jrc4558]

Its a wonderful soundclip! Now I wonder how hard would it be to build one.

[MartyMart]

Sounds really great Miguel, a project well persued
Could you limit the freq even a tad more ? 17Khz seems a little high unless you want to put some
VERY sparkley digital synth through it ! ..... or cymbals .....

[bioroids]

Hi everybody!

Tap tempo may not be all that for things that have an LFO that runs all the time. It's not because the tap tempo doesn't work, it's because you can't tap it perfectly accurately. If your tapping doesn't match the song tempo exactly, the LFO and song tempo wander out of phase.

I see your point, I was thinking also resynchronising the lfo with the engaging of the effect. So when you press the switch the LFO kicks in at the lowest point of the sweep.

You mean like DIY-groupies... 
I'm still waiting for this new world order to come true.

I think that will never happen 

Its a wonderful soundclip! Now I wonder how hard would it be to build one.

Not hard at all, if you have an avr programmer... I suppose I could send programmed chips to anyone who wants to try it, by mail, but I live in Argentina and the shipping costs can get ridiculous. The same chip should serve to implement tremolo, chorus, flanger or other modulation pedals too (though the speed range is not equal in all those effects).

Sounds really great Miguel, a project well persued
Could you limit the freq even a tad more ? 17Khz seems a little high unless you want to put some
VERY sparkley digital synth through it ! ..... or cymbals .....

Lol you never know what use you can give to your pedals... The fact is the PWM is running at 30Khz (checked on my pc scope once I realized my soundcard goes to 96Khz! ) so the limiting frequency should be 15Khz. I'm gonna try with the fast PWM mode as suggested by rmo, that should double the frequency.

Regards!

Miguel

[Processaurus]

Great project, thanks for sharing!

Tap tempo may not be all that for things that have an LFO that runs all the time. It's not because the tap tempo doesn't work, it's because you can't tap it perfectly accurately. If your tapping doesn't match the song tempo exactly, the LFO and song tempo wander out of phase.

Definitely.  What would be perfect (for syncing LFO phase to live music at least) is if you could tap in your tempo for the initial speed, and after that the microprocessor would routinely check a note detector that puts out a triggered pulse for each note, and adjust the LFO speed slightly to match the tempo of what is actually being played.  Make a provision to ignore notes on the offbeats, and only track the ones in the window (a percentage of the measure) of being nearly on the down beat.

[bioroids]

Definitely.  What would be perfect (for syncing LFO phase to live music at least) is if you could tap in your tempo for the initial speed, and after that the microprocessor would routinely check a note detector that puts out a triggered pulse for each note, and adjust the LFO speed slightly to match the tempo of what is actually being played.  Make a provision to ignore notes on the offbeats, and only track the ones in the window (a percentage of the measure) of being nearly on the down beat.

An effect that follows the tempo of your playing? That's wild stuff! But I don't think the Tiny13 has enough power to do all that.
Besides it will require that you play the on-beat notes right on time

I'm trying to implement the tap tempo on the main true bypass switch. The thing would work like this: you have the effect engaged, and then bypass it and engage it again to set the LFO speed. If you bypass it for more than one second (or maybe two), then it doesn't count for the Tap tempo.

I was also thinking the tempo tapped would correspond to a half period of the modulation. That's good for setting the slow LFO frequencies, but not so good for the fast ones... In any case the Tap tempo will not cover the full range of speeds possible, that you can access with the pot.

Regards!

Miguel