How it Works
Full Bucket Music
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blooo
Manual v1.1
10 pgs324.51 Kb0
Manual v2.1
13 pgs687.51 Kb0
Manual v2.1 [fr]
16 pgs556.3 Kb0
Table of contents
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Full Bucket Music blooo Manual v1.1

Download
the blooo
VST™ Software Synthesizer
Version 1.1
© 2013 by Björn Arlt @ Full Bucket Music
http://www.fullbucket.de/music
VST is a trademark of Steinberg Media Technologies GmbH
the blooo Manual Page 2
Table of Contents
Envelopes.....................................5
LFOs............................................5
Global..........................................6
Oscillators.....................................6
Filters..........................................7
Envelopes.....................................8
LFOs............................................8

Introduction

The blooo is a VST™2.4 polyphonic software synthesizer plug-in based on the classic subtractive synthesis architecture. It is written in native C++ code for high performance even on “lighter” systems. The main features are:
● Up to 64 voices polyphony including portamento
● Two band-limited oscillators including Ring modulation and Soft/Hard sync
● Four oscillator waveforms (sawtooth, pulse, sawpulse, sine) with shape control
● Additional white noise generator
● Two multi-mode four-pole filters (lowpass, highpass, bandpass, allpass, phaser)
with resonance and panorama control
● Three envelopes (ADSR) with exponential slopes
● Three low frequency oscillators (LFOs) with tempo synchronization
● Plug-in comes in 32 bit and 64 bit versions
● Fully compatible with SM Pro Audio's V-Machine™

What's New With Version 1.1?

Version 1.1 of the blooo is fully compatible with the previous version 1.0; it should be safe to replace the old plug-in with the new one.
● 64 bit version is now available
● Improved internal processing architecture
● Double precision audio processing
● Polyphony increased from 32 to 64 voices
● Additional Soft sync option is now available
● Fixed Zipper noise issue
● 19 new presets added
● Re-skinned UI
the blooo Manual Page 3

Architecture

Each voice of the blooo features two oscillators feeding a Ring modulator. The individual outputs of the oscillators, the Ring modulator, and an additional white noise generator are sent to the input mixers of two multi-mode filters; furthermore, Filter 2 can receive the output of Filter 1. The filter outputs are routed to two individual amplifiers with panorama control which are connected to the main stereo output bus.
Aside from the audio modules, the blooo has three envelopes and three LFOs for modulation purposes.

Oscillators

The oscillators of the blooo feature four different waveforms: Sawtooth, Pulse, Sawpulse (a mixture of sawtooth and pulse), and Sine. The shape of the the
waveforms can be modulated by any unipolar modulation source (see below); in case of the pulse waveform, this is equivalent to pulse width modulation.
Osc 1
Osc 2
Ring
Noise
Filter 1
Filter 2
Amp 1
Amp 2
L
R
Sawtooth
Sawpulse
Pulse
Sine
Shape = 0 Shape = 50 Shape = 100
the blooo Manual Page 4
Note that Sawtooth with a shape value of 100 equals a mixture of a sawtooth wave and an additional sawtooth wave transposed by one octave. For Sine the shape value controls the phase of the sine waveform only.
On a new note event, digital oscillators typically start at the same initial phase angle of the waveform (e.g. the zero-crossing of a sawtooth's rising edge) while classic analog oscillators do not; they are “running free” (which means they are still oscillating even if no note is played). The blooo will emulate this behaviour when the Free parameter in the Global section is turned on.
The frequencies of both oscillators can be modulated independently by two different modulation sources (unipolar or bipolar). Furthermore, Oscillator 2 features Soft and Hard sync (the phase angle of it's waveform will be inverted or reset whenever Oscillator 1 has finished a complete waveform cycle) to create rich harmonic spectra.

Filters

Each of the two filters of the blooo can be divided into three sections: input mixer, filter stage, and output amplifier. The input mixer accumulates the output signals of Oscillator 1 and 2, the Ring modulator (output of Oscillator 1 multiplied by the output of Oscillator 2), and a white noise generator. Furthermore, Filter 2 can also add the the output of Filter 1's filter stage.
From the input mixer the signal is sent to a four-pole filter stage of selectable mode: Lowpass, Highpass, Bandpass, Allpass and Phaser (Allpass added to the input mixer's output). The filter stage may also be bypassed (i.e. the input mixer signal is routed directly to the output amplifier) or even turned off completely.
The Cutoff parameter adjusts the cutoff or center frequency of the filter stage. Like the oscillators, the cutoff/center frequency can be modulated independently by three modulation sources. Resonance controls the amount of feedback from the output to the input of the filter stage. If Resonance is set to a value near 100 the filter will start to self-oscillate.
The output of the filter stage is sent to an amplifier section with stereo panorama control which can be modulated by a unipolar or bipolar source. The output volume is controlled by the Volume parameter, the output signal of Envelope 1, and two optional unipolar modulation sources. Note that Envelope 1 is hard-wired to the amplifiers of both filters.
the blooo Manual Page 5

Modulation Sources

The blooo's oscillator/filter frequencies, waveform shapes, amplitudes etc. can be modulated by various modulation sources. Sources that produce a control signal of positive values only (including zero) are called unipolar while sources producing either positive or negative values are called bipolar. The following table lists the available modulation sources and their polarity.
source polarity description
Off unipolar constant value 0
On unipolar constant value 1
LFO1+ unipolar output of LFO1 ranging from 0 to 1
LFO2+ unipolar output of LFO2 ranging from 0 to 1
LFO3+ unipolar output of LFO3 ranging from 0 to 1
Env1 unipolar output of envelope 1 ranging from 0 to 1
Env2 unipolar output of envelope 2 ranging from 0 to 1
Env3 unipolar output of envelope 3 ranging from 0 to 1
Velo unipolar MIDI note velocity
Note+ unipolar MIDI note value
Pbnd+ unipolar MIDI pitch bend wheel (value at center
position is 0.5)
Wheel unipolar MIDI modulation wheel
LFO1 bipolar output of LFO1 ranging from -1 to 1
LFO2 bipolar output of LFO2 ranging from -1 to 1
LFO3 bipolar output of LFO3 ranging from -1 to 1
Note bipolar MIDI note (value at C3 is 0)
PBend bipolar MIDI pitch bend wheel (value at center
position is 0)

Envelopes

The three envelopes of the blooo are standard ADSR generators with exponential slopes as featured in classic analog synthesizers. Envelope 1 is hard-wired to the filter amplifiers and directly controls the overall amplitude contour.

LFOs

The three low frequency oscillators (LFOs) generate a periodic control signal from 0 to 100 Hz or can be tempo-synchronized to the host. Six waveforms are available: Sine, Square, Saw Up (rising sawtooth), Saw Dn (falling sawtooth), S/H (Sample and Hold, i.e. random values), and 3-Step (“stair”-shaped waveform with three steps). The Retrig parameter controls whether the LFO is restarted for each new note or is “running free” (similar to the Free Run mode of the oscillators).
the blooo Manual Page 6
It is possible to modulate the magnitude of the LFO's output by any unipolar modulation source (even by the LFO itself). This can be used to control the LFO via the modulation wheel or to create complex modulation signals, “magic vibrato” effects, etc.

Parameters

Global

parameter description
Voices number of polyphonic voices (up to 64)
PBend maximum pitch bend amount (± 24 semitones) of the oscillators
Porta portamento time (0 to 5 seconds)
Volume the overall volume
Free Free Run mode: when a new note event occurs, Free controls
whether the oscillators start at the beginning of the wave form (typical for “digital” oscillators) or are “running free” (like classic analog oscillators)
Clip controls whether the overall output is unlimited or clipped to
unity (tanh clipping function)

Oscillators

parameter description
Waveform four types are available: Sawtooth, Pulse, SawPulse, and Sine
Pitch the relative pitch (± 24 semitones)
Tune fine tuning of the oscillator (± 1 semitone)
Shape waveform shape control; for Pulse this is equivalent to pulse
width
Sh.Mod amount of waveform shape modulation
Sh.Mod Source
the source of the shape modulation; this can be any unipolar modulation source (see Modulation Sources below)
FM1 / FM2 amount of frequency modulation
FM1 / FM2 Source
the source of the frequency modulation; this can be any modulation source (see Modulation Sources below)
Sync controls whether Oscillator 2 is synchronized to Oscillator 1 (Off,
Soft, Hard)
the blooo Manual Page 7

Filters

parameter description
Osc 1 filter input mixer: level of Oscillator 1
Osc 2 filter input mixer: level of Oscillator 2
Ring filter input mixer: level of Ring modulation (Oscillator 1 /
Oscillator 2)
Noise filter input mixer: level of white noise generator
Filter 1 filter input mixer: level of Filter 1
Filter mode Off: the filter is switched off
Bypass: the filter's input is directly routed to the filter's
output
Lowpass: 4 pole lowpass filter Highpass: 4 pole highpass filter Bandpass: 4 pole bandpass filter Allpass: 4 pole allpass filter Phaser: 4 pole allpass filter (output mixed with the filter's
input)
Cutoff cutoff or center frequency of the filter
Resonance feedback amount of the filter; high values will cause self-
oscillation
FM1 to FM3 amount of cutoff frequency modulation
FM1 to FM3 Source
the source of the cutoff frequency modulation; this can be any modulation source (see Modulation Sources below)
Pan stereo position (panorama) of the filter output
Pan Modulation
amount of panorama modulation
Pan Source the source of the panorama modulation; this can be any
modulation source (see Modulation Sources below)
AM1 / AM2 amount of amplitude modulation
AM1 / AM2 Source
the source of the amplitude modulation; this can be any unipolar modulation source (see Modulation Sources below)
Volume filter output volume
the blooo Manual Page 8

Envelopes

parameter description
Attack attack time of the envelope
Decay decay time of the envelope
Sustain sustain level of the envelope
Release release time of the envelope

LFOs

parameter description
Waveform six types are available: Sine, Square, Saw Up (rising sawtooth),
Saw Dn (falling sawtooth), S/H (Sample and Hold, i.e. random values), and 3-Step (“stair”-shaped waveform with three steps)
Retrig when a new note event occurs, Retrig controls whether the LFO
starts at the beginning of the wave form or is “running free” (similar to the Free control for the audio oscillators)
Rate rate or speed of the LFO (in Hertz or note lengths)
Sync controls whether the LFO is synchronized to the host tempo
AM amount of amplitude (output level) modulation
AM Source the source of the amplitude modulation; this can be any unipolar
modulation source (see Modulation Sources below)
the blooo Manual Page 9

Frequently Asked Questions

How do I install the blooo (32 bit version)?
Just copy the file blooo.dll from the ZIP archive you have downloaded to your system's or favorite DAW's VST plug-in folder. Your DAW should automatically register
the blooo VST plug-in the next time you start it.
How do I install the blooo (64 bit version)?
Just copy the file blooo64.dll from the ZIP archive you have downloaded to your system's or favorite DAW's VST plug-in folder. Your DAW should automatically register
the blooo VST plug-in the next time you start it.
Note: You may have to remove any existing (32 bit) blooo.dll from your VST plug-in folder or else your DAW may screw the versions up...
How do I install the blooo on the V-Machine?
First of all: Make sure that you have installed the latest V-Machine firmware and VFX software (available from www.smproaudio.com). The blooo is known to work with version 2.0.20101204. :-)
Second: I will not take any responsibility if the following install procedure does not work for you, corrupts or damages your V-Machine, or bores you! :-P
Third: I do have a V-Machine and tested the blooo against it. Have faith! ;-)
Now to the point: Export the contents of the ZIP archive to a temporary folder on your PC/Mac, run the VFX software, and import the blooo.dll plug-in from this folder; the VFX software will automatically select a wizard file. Magic! ;-)
Finally, create a preset for your V-Machine using the blooo and you're done!
What is the VST plug-in ID of the blooo?
The ID is 1 r 7 6 .
How can I decrease the blooo's CPU load?
Always try this:
• If you don't need one of the two filters, set it's mode to Off.
• If you don't need Ring modulation, set both Ring parameters of the filter input
mixers to zero.
Whenever it does not degrade the sound you need, try this:
• Reduce polyphony, i.e. the number of voices.
• Turn of Free Run mode of the oscillators.
• Turn of tempo-synchronization of the LFOs.
the blooo Manual Page 10
How can I prevent output clipping (for example when I use high Resonance values)?
Decrease the filter amplifier's and/or the overall Volume parameters. Alternatively, switch on the Clip parameter in the Global section but that might lead to distortion effects. Hey, maybe that's exactly what you need? ;-)
Why are the maximum values of the FM parameters ±500 and not ±100 like most of the other parameters?
The maximum frequency modulation of the blooo's oscillators and filters ranges from five octaves down to five octaves up. Thus, a value of 100 represents a ±1 octave modulation range and a value of 500 the maximum range of ±5 octaves.
However, in case of the Note modulation source a value of 500 results in a frequency modulation of one octave per octave on the keyboard (with respect to MIDI key C3). Why that? Because it gives the answer to the following question:
How can I tune the filter frequencies to the note played on the keyboard?
Select the Note modulation source for one of the FM parameters of the filter and set the modulation amount to 500. Play MIDI key C3 and adjust the Cutoff parameter so that the filter is in tune with the oscillators.
What does the name blooo mean?
Nothing, except that it sounds like “blue”. The same is true for the name Full Bucket, excepts that it does not sound like “blue”.
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