VPed VST-VSTi Spécifications télécharger pdf (Page 51)

Finding a great sound: FAQ

Q. What can I do to improve the frequency response of a preset?

A. Use an EQ or change the tonestack of an amp, but most of all, experiment with the speakers. A surprisingly large part of the sound

comes from the speakers. Most amps have bass, mid and treble controls to adjust the tonestack’s lter parameters. You should

assume the default values are actually the best for most users, for that amp. However, the power of Revalver

™

is the ability to

experiment with all aspects of an amp’s design. Remember one important thing: every EQ you use before an amp will aect the

frequency range of the distortion harmonics. If you only wish to ne-tune the sound of a preset, primarily use the EQ the farthest

down the chain as possible.

Q. How much does the sound of the Guitar matter?

A. It matters a lot! One must never think that the nal sound is the same if you switch to another Guitar. The sound of a single -coiled

pickup is very dierent from that of a humbucker pickup. Everybody has their favorite, and the sound and feeling diers as much as

any two amps.

Q. Do the tonestacks in ReValver MK III.V actually sound like the “originals”?

A. Yes. The software version of the tonestacks are very similar to those on the original amps. All capacitors, resistors and pots have

been accurately modeled.

Q. What about the presence controls?

A. The presence controls are usually not a part of the tonestack but are part of the power amp. Most amps use “negative feedback”

to control distortion and output linearity of the power stage. By applying a lter in the feedback path, and controlling this lter with

a knob, a very nice mid/high-mid presence can be achieved.

Q. Are the amps in ReValver™MK III.V modeled after real amps?

A. Most of them are. The program is able to model about 90-95% of the electronic components in any given real amp, including the

tubes, diodes, lters, transformers, power supply and more. When modeling a real amp in ReValver MK III.V, the original or reissue

schematics have been used. Sometimes a blend of schematics were used, and some amps have components that were tweaked by

ear afterward and do not totally match the original.

Q. I have some very cool Impulse Response (IR) les. Can I use them with ReValver MK III.V?

A. Yes. The speaker convolution modeler (RIR) can load les in .wav format, provided they are reasonably short. RIR is using a

real-time engine that requires no particular sample chunk size, so it can operate less eciently with larger les. All input is therefore

shortened considerably if needed. No reverb, echo or delay type of IRs can be used.

Q. In ReValver MK III.V you can switch between push-pull and single-ended stages. What about the phase inverter?

A. The phase splitter, “Long Tail Pair Phase Inverter“ has two outputs, each being essentially the same signal but with one being

inverted 180 degrees. This is a common circuit to drive a push-pull stage that in fact requires two signals, one being 180 degrees

apart. If you wish to drive a single ended stage you need only one signal, and there is little advantage in driving it with a phase

inverter. In a module that in fact has a phase inverter, you can still switch the push-pull stage to a single- ended stage. What happens

is simple: the inverted signal is ignored. Only the top half of the inverter signal is used.

Licensing and copy protection

ReValver™MK III.V utilizes a copy protection system that is entirely software based. There is no need to buy or purchase a driver to make the

program work. A license for the program, or a sub feature of the program, is handled through license les in text format. These license les are

locked to a particular hardware component on the computer in question. The actual component can be chosen from a number of types (but at the

time of writing, only the “system drive” can be chosen). You may upgrade your hardware any number of times, requiring a new license le (which

can be downloaded through the Peavey web site, or the accompanying Activation Tool).

Credits and copyrights

Copyrights

ReValver MK III.V relies in part on the following technologies:

PortAudio, copyright Ross Bencina and Phil Burk. PortMIDI, copyright Ross Bencina, Phil Burk and Roger B. Dannenberg. FFTReal, copyright Laurent

de Soras. ASIO, VST PlugIn Interface Technol ogy by Steinberg Media Technologies GmbH. Some speaker IR samples, copyright Chris Hurley, Dimitar

Nalbantov, Murray McDowall. FamFamFam Silk icons (http://www.famfamfam.com/lab/icons/silk/)

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