

                            PURGE GB-303 Bassline

                                  version 7

                             manual of operation
                         (simplified english version)

1. Introduction

The PURGE GB-303 is a program to render simple bass samples. It can also be
used to make sounds used in Acid House music.

1.1. Notes on operation and the manual

Up to now we have spend more time on developing the sound quality than the
intuitive user interface or a correct english manual. It is therefore
recommended to study the screen carefully since all keys used for operation
are printed on it.

2. Using the sequencer

The sequencer consists of two parts: the pattern editor and the track editor.

2.1. Entering basslines

2.1.1. Choosing a memory location

To enter a bassline, move the cursor in the memory map to the memory location
you want the bassline located at.

2.1.2. Editing basslines

The basslines are edited in the pattern editor field. You can use the keys
printed around the pattern editor to edit.

A single line in the editor looks like this:

  C#0
     
     
  
   C...B     hit a new note
   hold      let the note fade out
   pause     stop note and pause
   octave    transpose note by one ocatve up/down
   slide     portamento to next note.
   accent    this note is played louder, according to the accent-value

2.1.4. Length of a bassline

The lenght of a bassline is given by the speed, the number of notesteps and
whether the one-sixtenths-mode or the triole-mode is actived. The triolemode
is used for correct replay of trioles. When activated the bassline is not
divided in sixteen Sixteenths but in twelfe Thirds.

2.2. The trackeditor

There are seven different tracks with 64 pattern entries each. Every entry can
be transposed:

  A305

       da capo / dal segno position
       transposing
     bassline within track bank

The last colum shows the da capo and dal segno position.

  da capo = last entry
dal segno = loop position

3. The synthesizer

The synthesizer is controlled by the six slide-controllers and the waveform
selection.

3.1. finetune-controller

This controller tunes the synthesizer by +/- 2 halftones.

3.2. cutoff-frequency

This slider controls the cutoff frequency of the lowpass filter.

3.3. Resonance

This slider controls the resonance of the filter. Turn on for Acid.

3.4. Envelope modulation

This controller influences the initial cut-off frequency.

3.5. Decay

This slider controls the speed of filter-modulation and the envelope of the
note.

3.6. Accent

This controller shows you the ratio of accented notes to unaccented notes.

3.7. Tempo

This slider controls the speed of the GB-303.

3.8. Volume

This slider controls volume and distortion of the samples

3.9. selecting the waveform

By pushing this key, you can toggle between saw-wave and square-wave.

(4. + 5. not yet translated)

6. The rest

6.1. how to pay or how not to

This program is freeware because we used PMODE/W by Tran and he wants $500
which I don't have. ANYWAY... I will not reject gifts esp. in form of money.
Money will also have a very positive effect on further program development.
I have thought of about $15/20DM or so.

                   Ŀ
                    (W)&(C) for this software 1995 by    
                    Gerhard Brandt. Spreading on CDs,    
                    PD-disks, PayUser-BBSs oe. ONLY WITH 
                    PERMISSION BY THE AUTHOR !!!!!!!!!!! 
                   

If you have any questions/recommendations/bugs or an uncontrollable urge to
pay money feel free to write/call/post:

      Gerhard Brandt
      Teckstr. 10
71263 Weil der Stadt 5
      GERMANY

Hotline: +49-(0)7033-42191 (16h - 22h MET !)
   FIDO: 2:2471/6000.21
  email: gb303@nmi.bawue.bb.de

6.2. underground messages

We are always looking for people interested in theory of artificial music and
synthesizing. Contact us if you know how to hall/reverberate/filter etc. !


credits:

All coding done by: The Rd-d / PURGE.public_NMI
 Thanks must go to: Toxic Trancer / Radical Rythms (for supplying us with a
                                                    TB-303 manual)
                    Code-X / PURGE.D-LUSi0N (for help with the GUS-routines
                                             and the keyhandler)
                    [annibal / Radical Rythms   (for moral destruction and
                                                 general lameness)
                    Raver Ray / RR              (for the TB-303 blueprints)

greetings:

rest of PURGE, KREWEL KREW, TPTOWER, RADICAL RYTHMS, RESISTANCE AGAINST
RADICAL RYTHMS, WHO'S THAT BERT, XOGRAPHY, VACUUM, N-FACTOR, STAY HARDCORE,
LEGEND DESIGN, AMABLE, K.L.F., EYE-D-ALISTIC, VIRTUAL DESIGN, IMPHOBIA,
NOSTALGIA, ORANGE, TRAN, ACID, TRAXX, AVALANCHE, SURPRISE!PRODUCTIONS, IGUANA,
HYPERNOVA, ANARCHY, FUTURE CREW, ACME, JESKOLA!PRODUCTIONS, TRITON, ZWILIGHT
TONE and of coz all andaground musicians using thiz tool !!!



