DFX Transverb.pdf

Transverb

Transverb is like a delay plugin, but it can play back the delay buffer at different speeds. Think of

it like a tape loop with two independently-moving read heads. There are lots of parameters to

control and a parameter randomizer for the impatient. Tom's first released plugin. Fun!

The controls are divided into sections. Head #1 is the section of controls for one of the delay

playbacks. Head #2 is the section of controls for the other delay playback. Each of these

controls has a big slider & also little fine adjustment buttons to the right of the slider.

The buffer size parameter controls the size of the buffer that both delays use.

The mix section lets you control the volume levels of the input signal (your sound unaffected) &

the 2 delays.

The quality button enables higher quality playback of the delays' speed transposition. Turning it

on will result in better sound quality (hi-fi resampling vs. no interpolation), but it will use up more

of your computer's processing power, so that's why you have the option of turning that off. Also,

you might sometimes maybe prefer the grainier dirt-fi sound.

An X in the quality box indicates regular hi-fi mode & an ! indicates "ultra hi-fi" mode. Ultra hi-fi

mode reduces the aliasing noise that can occur when speeding up delay heads past 0. This

imposes an even bigger CPU load, though, & the load increases as you speed up a delay head,

although the load stops increasing after +2.25 octaves.

Speaking grainier, you can turn on TOMSOUND if you want megaharsh sound.

Each head section has 3 parameters: speed , feedback , & distance .

Distance only really makes a difference when the speed is at zero. This is the how far behind

the delay is with respect to the input signal. If the speed is anything other than 0, then the

distance quickly becomes irrelevant because the delay head is moving through the buffer at a

different speed than the input is writing into the buffer.

Feedback controls how much of the delay sound gets copied back into the delay buffer.

Speed lets you control how quickly or slowly the delay moves through the delay buffer.

Speed is also the fanciest parameter. There are many ways to control it. The units are in units of

octaves & semitones so that you have musically useful control over the speed. In addition to

controlling the speed parameters with the big sliders & the fine tuner buttons, you can press the

buttons above the fine adjustment buttons to change the way that the fine buttons function. If you

switch them to "semi" mode, then clicking on them will snap you to whole semitone values. If you

switch them to "8ve" mode, then clicking on them will snap you to whole octave values.

On top of that fanciness, you can also click on the value field & manually type in your own values

for total precision. When you type in these boxes, Transverb looks for 2 numbers: the octave

followed by semitones. So if you want + 1 octave & 3 semitones, you type in "1 3." If you want to

just enter that in terms of semitones, then type in "0 15." If you do something kind of stupid like "1

-3," then it reinterprets the semitones as positive (since you're going in the positive direction with

the octaves) & makes it +1 octave +3 semitones. Similarly "-3 4" will get changed to -3 octaves -

4 semitones." If all you type is one number, then that gets interpreted as the octave. You can

even make that a fractional number & the fraction will get converted into semitones. For

example, if you type in "3.75," you'll get +3 octaves +9 semitones. But if you type in an octave

with a fractional value & a second number, the second number overrides the fractional part of the

octave number, i.e. "3.3 8" will result in +3 octaves +8 semitones, not +3 octaves +3.6 semitones.

There are 2 ways to randomize Transverb's parameters. You can press the "randomize all

settings" button or you can choose the "random" preset. These 2 approaches are different in

certain ways.

Pressing the button will tell the VST host to save automation data for each parameter change. In

hosts that support this (Logic, Cubase, & other multi-trackers), that means that these parameter

changes can be saved in your song & then each randomized change will occur in exactly the

same way every time you play back your song again later.

Choosing the "random" preset will randomize Transverb's parameters without telling the host to

save automation data. And with hosts that support sending MIDI messages to effects plugins,

you can automate the random preset by sending MIDI program change messages (send program

15). This way, you can save parameter randomizations as a part of your song, but the outcome

of each randomization will be different every time you play your song back.

parameter adjustment tricks: You can make fine adjustments by holding the shift key while

adjusting a parameter with your mouse. You can make even finer adjustments with the little

arrows nears the faders. You can also reset a parameter to its default value by holding the ctrl

key when clicking on it. And you can flip through the quality & semi/8ve/fine buttons in reverse

order by right-clicking.

by Tom Murphy 7 & Marc Poirier ~ destroyfx@smartelectronix.com

September 2001

Destroy FX #22

smartelectronix.com/~destroyfx

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