User manual ALESIS QUADRAVERBGT

[. . . ] It combines analog and digital electronics to provide the best of both worlds. Analog effects include: Compression Distortion Flat/Presence/Brightness Control Bass Boost Speaker Cabinet Simulator (ideal for use with headphones or recording direct; can be bypassed when feeding a guitar amp) Noise Gate Programmable Effects Loop for inserting other effects (can also provide a signal send from the analog outputs, and receive a return signal into the digital processor) The digital effects are the same ones that have made the QuadraVerb Plus a favorite in studios and live equipment racks world-wide: Reverb Delay (stereo or mono) Pitch Change (chorus, flange, detune, phaser, etc. ) Equalization (graphic or parametric) Panning and Tremolo Ring Modulation Tunable Resonators (a very resonant filtering effect) Sampling (up to 1. 5 seconds of sound can be captured and replayed) The order of the analog effects are preset in their optimum positions; the routing of the digital effects is flexible and programmable. 100 edited programs can be saved in memory, and called up by front panel switches or MIDI program change commands. Settings need not be staticyou can control them in real time with Continuous Controller foot pedals, or with sequencers or keyboards. 1 Features 20 Hz to 20 kHz frequency response Up to 11 simultaneous effects (6 analog, 5 digital) and programmable effects loop Backlit, descriptive 32 character LCD display Touch sensitive programming buttons for quick editingpress harder to scroll faster through the display Stores up to 100 programs Comprehensive MIDI implementation Real-time parameter control via MIDI controllers Easy editing of all parameters All functions, parameters, and volume levels fully programmable Stereo in and out Flexible effects routing and mixing Several types of reverbs, including: Plate, Room, Chamber, Hall, and Reverse Several types of delay, including: Ping Pong Delay, Mono Delay, Stereo Delay, and Multitap delay Several types of Pitch Shift, including: Mono Chorus, Stereo Chorus, Mono Flange, Stereo Flange, Pitch Detune, and Phase Shifter Three types of Digital EQ, including: 3 band Parametric, 5 band Parametric, and 11 band Graphic Any or all Alesis presets can be recalled from ROM at any time 1. 2 SYSTEM HOOKUP BASICS The QuadraVerb GT is designed for mono or stereo guitar, bass, Chapman Stick, etc. [. . . ] However, the pitch parameters are quite different for these configurations. Parameters are covered in the following order: Configurations 1 and 4 use pitch parameters in a relatively traditional manner (chorus, flange, pitch detune, and phase shifter). Configuration 5 uses the pitch module to access Reverb Chorus effects. Configuration 6 uses the pitch module to access Ring Modulator effects. Pitch Mode (configs 1, 4) Mono Chorus Splits the signal into two lines: one is unprocessed, while the other has its pitch changed in a cyclical manner. Mixing these two together produces frequency response and amplitude variations that create the sound of multiple instruments playing en ensemble. Stereo Chorus This is similar to mono chorus, but splits the signal into two pairs of two lines (one pair per channel). As the delay time in one channel is increasing, the other channels delay is decreasing and vice-versa. Mono Flange Similar to mono chorus, but with parameters optimized for flanging. This effect imparts a whooshing, jet airplane sound to the signal being processed. Stereo Flange Similar to stereo chorus, but with parameters optimized for flanging. This is often used to obtain 12-string effects from a six-string guitar. Phase Shifter The Phase Shifter shifts the phase of certain frequencies to produce a comb filter effect. For the deepest pitch effects, the dry and processed signal levels (found in the Mix section) should be equal (50% dry and 50% effect). 49 Pitch Input (configs 1, 4) Preamp Output The pitch module input signal comes from the preamp output. EQ Output The pitch module input signal comes after the EQ module. LFO Waveshape (Chorus only) As mentioned earlier, in chorusing the pitch change is cyclical. There are two ways to modulate the pitch: Triangle This produces a smooth, regular chorusing sound. Square The time delay jumps between two values, producing a more radical modulation effect. LFO Speed (Chorus and Flange only) The display says: LFO SPEED: 04 This parameter alters the rate of pitch modulation, from 01 (slow) to (fast) 99. LFO Depth (Chorus and Flange only) The display says: LFO DEPTH: 61 This parameter determines how much the modulation affects pitch. High LFO depth settings may make a signal seem out of tune unless you slow down the LFO speed. 50 Pitch Feedback (Chorus and Flange only) The display says: PITCH FEEDBACK: 00% Pitch feedback sends some of the output signal back to the input, from 00% to 99%. Higher numbers give a sharper, more resonant sound. Trigger Flange (Flange only) The display says: TRIGGER FLANGE: OFF When on, a silence between incoming notes resets the flanger to its highest point, and as soon as a new note appears, the flanger sweeps downward. If you continue to holding a sustaining note, the flanger will sweep according to the LFO parameters. Trigger flange works best with notes having a percussive attack. Pitch Detune (Detune only) The display says: DETUNE AMOUNT: -15 This sets the amount of detuning in cents from -99 to +99 (+ is sharp, - is flat). 51 Phaser Speed (Phaser only) The display says: PHASER SPEED: 04 This parameter alters the rate of phaser modulation, from 01 (slow) to (fast) 99. Phaser Depth (Phaser only) The display says: PHASER DEPTH: 95 This parameter determines the degree to which the modulation affects the phaser effect. Higher numbers increase the phaser sweep. Lezlie Stereo Separation (config 2 only) The display says: LEZLIE STEREO SEPARATION: 80 This parameter determines the extent to which bass and treble will be spread across the stereo image. Higher numbers increase the degree of separation. Lezlie Motor Control (config 2 only) The display says: LEZLIE MOTOR CONTROL: ON 52 Because the speakers in a mechanical rotating speaker system weigh a lot, they take a while to get up to speed from a dead stop, and take a while to slow down when turned off. [. . . ] MIDI allows for 64 continuous controllers (these act like potentiometers in that you can choose one of many different values) and 58 continuous/switch controllers (these can act like continuous controllers but some are assumed to choose between two possible states, such as on/off). Each type of controller is stamped with its own controller identification number. Not all controller numbers have been standardized for specific functions, but the following indicates the current list of assigned controllers. 1 2 3 4 5 Modulation Wheel (0-127) Breath Controller (0-127) Early DX7 Aftertouch (0-127) Foot Controller (0-127) Portamento Time (0-127) 118 6 Data Slider (0-127) 7 Main Volume (0-127) 8 Balance (0-127) 10 Pan (0-127) 11 Expression (0-127) 16 General Purpose #1 (0-127) 17 General Purpose #2 (0-127) 18 General Purpose #3 (0-127) 19 General Purpose #4 (0-127) 32-63 Least Significant Bits, Controllers 0-31 (0-127) 64 Sustain Pedal (0 or 127) 65 Portamento On/Off (0 or 127) 66 Sustenuto Pedal (0 or 127) 67 Soft Pedal (0 or 127) 69 Hold 2 (0 or 127) 80 General Purpose #5 (0 or 127) 81 General Purpose #6 (0 or 127) 82 General Purpose #7 (0 or 127) 83 General Purpose #8 (0 or 127) 92 Tremolo Depth (0-127) 93 Chorus Depth (0-127) 94 Celeste Depth (0-127) 95 Phase Depth (0-127) 96 Data Increment (0 or 127) 97 Data Decrement (0 or 127) 98 Non-Registered Parameter MSB (0-127) 99 Non-Registered Parameter LSB (0-127) 100 Registered Parameter MSB (0-127) 101 Registered Parameter LSB (0-127) 121 Reset All Controllers (0) 122 Local Control On/Off (0 or 127) 123 All Notes Off (0) 124 Omni Off (0) 125 Omni On (0) 126 Mono On (0-16; 0=Omni Off) 127 Poly On (0) 8. 4B Mode Messages There are two messages that determine the MIDI mode (i. e. , how the QuadraVerb GT will receive MIDI data). 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