lfo in audio rate

Cwejman, Livewire, TipTop Audio, Doepfer etc... Get your euro on!

Moderators: luketeaford, Joe., lisa, Kent

Post Reply
User avatar
cocco88
Common Wiggler
Posts: 138
Joined: Sun Oct 11, 2009 9:28 am
Location: Italy

lfo in audio rate

Post by cocco88 » Thu Nov 26, 2009 6:42 am

hi everyone. can you tell me an lfo that works in audio rate so it can be used as a dronemachine/vco?

does the vulcan or ulfo do this?

thanks

User avatar
skaio
Learning to Wiggle
Posts: 25
Joined: Sat Sep 05, 2009 5:38 am

Post by skaio » Thu Nov 26, 2009 7:29 am

do you kow what a VCO is? :hyper:
then you know what a lfo in audio rate it is... :cloud:

User avatar
cocco88
Common Wiggler
Posts: 138
Joined: Sun Oct 11, 2009 9:28 am
Location: Italy

Post by cocco88 » Thu Nov 26, 2009 8:03 am

my question is if i can use vulcan or ulfo as a VCO in audio range. for example I patch vulcan square out into mixer what can i ear?

User avatar
authorless
Super Deluxe Wiggler
Posts: 2320
Joined: Tue Feb 17, 2009 10:41 am
Location: Wilmington, NC

Post by authorless » Thu Nov 26, 2009 8:32 am

uLFO, yes. vulcan, only lower audio frequencies. dalek, yes. doepfer A-143-3, yes.

User avatar
theglyph
Maybe it was eat me?
Posts: 2037
Joined: Fri Feb 20, 2009 1:09 pm
Location: JAX, Florida

Post by theglyph » Thu Nov 26, 2009 8:34 am

The doepfer A-146 can operate at audio rate. It was my first oscillator.

User avatar
Reptil
In space no one can hear you wiggle
Posts: 1500
Joined: Tue Dec 30, 2008 4:39 pm
Location: low orbit

Post by Reptil » Thu Nov 26, 2009 8:40 am

a-140 a-141 a-160+a-161+a-138. lots of modules can oscillate in the hearing range.
Image

User avatar
D/A A/D
glorious dissonance
Posts: 2336
Joined: Mon May 12, 2008 1:25 pm
Location: HFX, NS, CAN

Post by D/A A/D » Thu Nov 26, 2009 9:43 am

I used to only use LFO's as my oscillators. I still have many...

DrOctave
Super Deluxe Wiggler
Posts: 1880
Joined: Mon Jun 08, 2009 11:54 pm
Location: trapped in some wires

Post by DrOctave » Thu Nov 26, 2009 9:50 am

Yes the uLFO does this very well. as for the vulcan i have no idea i do not have one.
It's beter to have cords and not need them than to need them and not have them.
http://www.youtube.com/user/DrOctave1?feature=mhum

unintentional states
Common Wiggler
Posts: 152
Joined: Sun Nov 08, 2009 9:46 am

Post by unintentional states » Thu Nov 26, 2009 9:53 am

Here's a BigCityMusic demo on 'alternative oscillators'. Only example of an LFO is the Plan B Elf, but you get the idea.



[video][/video]

User avatar
chinard
Super Deluxe Wiggler
Posts: 2416
Joined: Tue Aug 12, 2008 12:57 pm
Location: Toronto

Post by chinard » Thu Nov 26, 2009 9:59 am

the vulcan does but not very far into audio rates.
the dalek picks up where the vulcan leaves off in regards to cross modulated audio rate signals. (dalek also goes low frequency, but not as slow cycling as the vulcan)
Neither are intended to pitch track properly tho. I think there have been some experements trying to calibrate it in volta. Sounds like a nightmare.

The doepfer quadrature LFO a-143-9 also goes well into audio rates but is not intended to track pitch. (this is what the planned zero-thru osc is going to do apparently)

Another worthy mention would be the plan b M-37 ELF LFO.
Its basically a stripped down version of the M-15 triangle core osc that is fully usable as a 1v/oct oscillator if you needed an extra one in a pinch.

Also i'm pretty sure the cwejman D-LFO goes into audio rates and is pitch trackable 1v/oct, and the cwejman VCO-6 has a switch for LFO rates.

User avatar
dkcg
I pity the fool w/o enough VCAs
Posts: 9142
Joined: Mon Jul 14, 2008 12:35 pm
Location: LA

Post by dkcg » Thu Nov 26, 2009 2:10 pm

chinard wrote:Also i'm pretty sure the cwejman D-LFO goes into audio rates and is pitch trackable 1v/oct, and the cwejman VCO-6 has a switch for LFO rates.
Yup, it takes sync for both oscillators too with a RM/AM out and adjustable sync point. Sounds great, tracks well.

I think the fine tune is usually the biggest difference between LFOs and VCOs, with the range being the second difference which is often not a big difference.

User avatar
goiks
Hardest Tryer
Posts: 1858
Joined: Thu Oct 16, 2008 5:04 pm
Location: bishop california

Post by goiks » Thu Nov 26, 2009 3:14 pm

i really like the uLFO's sound when used as an fm'ed vco

User avatar
wetterberg
Super Deluxe Wiggler
Posts: 7673
Joined: Thu Jul 24, 2008 5:31 pm
Location: Copenhagen, Denmark.

Post by wetterberg » Thu Nov 26, 2009 5:55 pm

goiks wrote:i really like the uLFO's sound when used as an fm'ed vco
same here :hail: I already can't wait to pick up my second one!!!

User avatar
cocco88
Common Wiggler
Posts: 138
Joined: Sun Oct 11, 2009 9:28 am
Location: Italy

Post by cocco88 » Thu Nov 26, 2009 5:59 pm

and 143-1 or 143-2 ?

User avatar
wetterberg
Super Deluxe Wiggler
Posts: 7673
Joined: Thu Jul 24, 2008 5:31 pm
Location: Copenhagen, Denmark.

Post by wetterberg » Thu Nov 26, 2009 6:07 pm

cocco88 wrote:and 143-1 or 143-2 ?
Can't be voltage controlled. But theoretically yes, the a-143-2 will go up to about G#4, and the a-143-1 will do about D1 (quite low).
The a-147 lfo will do D0 with no CV input, and F2 with 5v of positive CV in.

the uLFO, on the other hand, will do A6, or roughly 3600hertz with no CV applied.

Post Reply

Return to “Eurorack Modules”