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Octave pedals!!!


basswesty
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[quote name='elephantgrey' timestamp='1363963204' post='2020236']
Are there any octave pedals out there that give you control over the waveforms used?[/quote]

Unfortunately, octavers don't work that way. They do generate a square wave down one octave or two, but that square wave is then multiplied by your bass's signal. That result is your bass's signal, but with the polarity flipped every half cycle of the squarewave, to add an octave down component.

The output is also filtered to remove any high frequency bits of the squarewave. This can make the soloed octave sound very sine-ish.

I think you will need a synth pedal to get different waveforms.

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[quote name='phagor' timestamp='1363974004' post='2020439']
Unfortunately, octavers don't work that way. They do generate a square wave down one octave or two, but that square wave is then multiplied by your bass's signal. That result is your bass's signal, but with the polarity flipped every half cycle of the squarewave, to add an octave down component.

The output is also filtered to remove any high frequency bits of the squarewave. This can make the soloed octave sound very sine-ish.

I think you will need a synth pedal to get different waveforms.
[/quote]

Isnt this technique called phase modulation?

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[quote name='elephantgrey' timestamp='1363974847' post='2020457']
Isnt this technique called phase modulation?
[/quote]

I guess it is - had to think about it that one for a bit! The square wave modulates the phase of your bass's signal by exactly 0 or 180 degrees. I know of phase modulation from the old Casio CZ keyboards where the phase of the oscillator could be modulated continuously from 0 to 360 degrees.

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[quote name='phagor' timestamp='1364002091' post='2020917']
I guess it is - had to think about it that one for a bit! The square wave modulates the phase of your bass's signal by exactly 0 or 180 degrees. I know of phase modulation from the old Casio CZ keyboards where the phase of the oscillator could be modulated continuously from 0 to 360 degrees.
[/quote]

Interesting. So in theory you could use any wave form to modulate the phase of the original signal, could even play about with the PWM of the wave…
But before i get carried away and derail this thread even further i shall go and look for synth pedals with adjustable waveforms.

That and look up phase modulation some more.

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I have the POG and MXR pedals and they are both great but different. I also have the Big John 'Granny Puker' which I love for making a crazy farty (or pukey?) square wave with some distortion. It can track really low but you can also get it to glitch out by increasing the distortion. Sounds amazing before an envolope filter. A bit on the pricey side for something so niche though...

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[quote name='xgsjx' timestamp='1363715914' post='2016483']
OC-3 tracks a little better than the OC-2 & has a good poly mode. I usually use mine in mono mode, so might replace it with an OC-2 sometime, but I'm happy with it. Sounds good going through some Moog filters.
[/quote]

I bought an OC-3 last week. It doesn't have that cool gitchy thing that folk love about the OC-2, it doesn't sound as beefy and synthy, but like yer man above said, it tracks better. It's a completely different pedal. Aye, OC-3 in poly mode is really sweet, very full, deep, and useable. In drive mode it sounds insane ... thick and crunchy, but with surprising tonal clarity. Infact, I've never heard a distortion that I prefered. That was an unexpected bonus from an extra feature on an octave pedal.

Edited by Fionn
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[quote name='basswesty' timestamp='1363551129' post='2014059']
[u]Mmm, food for thought. Thanks guys[/u]
[/quote]

[b]Octave Multiplexer vs OC2[/b]

[b]Published on 19 Oct 2012[/b]

[color=#333333][font=arial, sans-serif][size=3]Here is a simple comparison of these two pedals, side by side. Both serve a useful purpose, but do it in their own ways

[/size][/font][/color]http://www.youtube.com/watch?v=Ad4MiS3hDAg

[color=#333333][font=arial, sans-serif][size=3]** maybe you've seen this? after about 3:00 minutes, it gets a bit more interesting and the playing demos start.. fairly balanced review **

:hi:[/size][/font][/color]

Edited by SimonEdward
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i have no idea if this link will work but I just recorded a little clip on my iphone of my oc-2 being used with some dirts and delay. oc-2's are just amazing, they make everything bigger/fatter :)

an iphone camera is probably not the best to pick up sub-octave, so just ignore the video and buy an oc-2!

[url="https://socialcam.com/videos/Dlc1qfTZ?action_object_map=%7B%2210151540612650549%22%3A497800960269015%7D&action_ref_map=%5B%5D&action_type_map=%7B%2210151540612650549%22%3A%22socialcam%3Acreate%22%7D&autostart=true&fb_action_ids=10151540612650549&fb_action_types=socialcam%3Acreate&fb_source=other_multiline&no_fb_log=true&autostart=true"]https://socialcam.com/videos/Dlc1qfTZ?action_object_map=%7B%2210151540612650549%22%3A497800960269015%7D&action_ref_map=%5B%5D&action_type_map=%7B%2210151540612650549%22%3A%22socialcam%3Acreate%22%7D&autostart=true&fb_action_ids=10151540612650549&fb_action_types=socialcam%3Acreate&fb_source=other_multiline&no_fb_log=true&autostart=true[/url]

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[quote name='GazWills' timestamp='1364590013' post='2028679']
i have no idea if this link will work but I just recorded a little clip on my iphone of my oc-2 being used with some dirts and delay. oc-2's are just amazing, they make everything bigger/fatter :)

an iphone camera is probably not the best to pick up sub-octave, so just ignore the video and buy an oc-2!

[url="https://socialcam.com/videos/Dlc1qfTZ?action_object_map=%7B%2210151540612650549%22%3A497800960269015%7D&action_ref_map=%5B%5D&action_type_map=%7B%2210151540612650549%22%3A%22socialcam%3Acreate%22%7D&autostart=true&fb_action_ids=10151540612650549&fb_action_types=socialcam%3Acreate&fb_source=other_multiline&no_fb_log=true&autostart=true"]https://socialcam.co...&autostart=true[/url]
[/quote]

Nice demo Gaz - this sounds GREAT! I could hear the lower Octave clearly even on my laptop headphones - OC-2 still sounds fantastic..

not biased in any way whatsoever ;)

Edited by SimonEdward
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