FireSledge Pampurfe

v1.1 - Build 2008/08/09

What is Pampurfe ?

Pampurfe is yet-another-distortion effect plug-in for Buzz. It is based on the concept of "overdrive", emulating saturated tube amps. Not less than 10 different overdrive algorithms are available. Because overdrive makes the sound louder, Pampurfe is assorted with a special gain compensation function. It corrects automatically the output loudness to make it sound at the same volume as the input. This is particularly useful on percussive instruments, because the dynamics are kept. You can even over-exagerate the correction to increase the effect on dynamics. Thus the system behaves a bit like an expander. Then the distorted sound is optionally filtered with a 8-pole low-pass filter with a variable slope. This is helpful to remove the extra harshness introduced by the distortion. Tuned to the max, the filter becomes resonant. Pampurfe is designed to work on mono and stereo signals.

Installation and connections

Just copy FireSledge Pampurfe.dll in your Buzz/Gear/Effects/ directory. Restart Buzz if it was still running. To put Pampurfe into your song, go in the machine view and right-click on the background. Select New > Effect > Distortion > FireSledge Pampurfe. If it can't be found here, try in Effects > Unsorted. Now you just have to connect Pampurfe between two machines.

Parameters

Gain This is the main parameter. By increasing the gain, you increase the distortion effect. For most of the distortion algorithms, the volume of the input is first multiplicated by this gain, then clipped in a manner wich depends on the selected algorithm. Shape This parameter selects the distortion algorithm. Be careful when changing it while the gain is set to a high value. Indeed, some algorithms clip more or less radically the sound, which can cause a big change in the output sound volume. Compensation It is the amount of compensation done on the output volume. At 0 %, there isn't any compensation. At 100 %, the output sound has the same apparent volume as the input. It can be set up to 200 % to invert the distortion loudness. Tone This parameter setup the low-pass filter. At 0 % the filter is deactivated. Increasing the parameter up to 50 % progressively cuts the trebles above the cutoff frequency in a smooth way. Over 50 % the filter becomes a bit resonant. Freq This is the filter cutoff frequency.

Change log

2008.08.09 Version 1.1 Source code released under the LGPL license. 2002.06.08 Version 1.0 Initial release.

Miscellaneous infomation - Legal stuff

You enjoy it ? You'll find on my homepage many other buzz plug-ins. Pampurfe © 2002-2008 by FireSledge. Program and data included in this package may be freely distributed, as long as the .dll file is provided with this documentation. You're not authorised to sell it by any way. To contact FireSledge : Laurent de Soras 4 avenue Alsace-Lorraine 92500 Rueil-Malmaison France http://ldesoras.free.fr Buzz © Oskari Tammelin 1997-2000.