User manual LEXICON LXP-15-II

[. . . ] LXP-15 II Multi-Effects Processor Owner's Manual Unpacking and Inspection After unpacking the LXP-15 II, save all packing materials in case you ever need to ship the unit. Thoroughly inspect the LXP-15 II and packing materials for signs of damage. Report any shipment damage to the carrier at once; report equipment malfunction to your dealer. Notice This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designated to provide reasonable protection against such interference in a residential installation. [. . . ] (Since the maximum distance between the ears and any path a sound might take to the ears is less than one foot, the maximum delay used for lateral localization is less than one millisecond. ) Frontal perception of sound is affected by such factors as relative loudness, high-frequency content and the relative mix of direct and reflected sound. As the sound source moves away, it grows softer, its high-frequency content decreases and more reflected sound is heard. If the source is moving relatively quickly, a pitch shift is heard as well. The pitch increases as the source approaches and decreases as it moves away. You can create frontal localization effects by controlling input/output levels, high-frequency roll-off, dry/wet mix, and pitch. A useful localization effect for sound reproduction is to use delays to eliminate echoes and increase the intelligibility of sound systems. Time delay can't eliminate refelections from walls or boundaries, but it can be used to eliminate the confusion that results when sound arrives at the listener from different loudspeakers at different times. Ideally, the sound should arrive at the listener first from the main speakers and then about 20 milliseconds later from the auxiliary speaker (like the delay towers near the middle of the audience at a large rock concert). The LXP-15 II can provide two delay paths for two zones of auxiliary speakers by using the stereo delay in the Pitch/Delay algorithm. The correct amount of delay can be approximated by using the formula: (d x . 885) + 20 where d = the difference in the path length to the listener from the main and the auxiliary speaker. The result is the approximate number of milliseconds of delay required for the auxiliary speaker. Localization 4-5 LXP-15 II Owner's Manual Lexicon Patching Patching, as described previously, is the ability to assign a control (Source) to any LXP-15 II parameter (Destination). This allows you to alter the value of the parameter by manipulating the control Source. For example, you can use a foot pedal as a Source and ouput level as a Destination. This patch will allow you to dynamically alter the volume of the sound with the motion of your foot. You can specify what position of the pedal corresponds to the initial setting of the parameter (pedal down, pedal up, or anywhere in between. ) Furthermore you can specify how much of a change will be produced by a full sweep of the pedal, and which direction of motion (up or down) corresponds to an increase or decrease of the parameter value. Sources All Sources are the same in the sense that each generates an output value in the range of 0-127. The output value is used to increase or decrease the initial setting of a Destination parameter. Sources differ in the manner in which they generate an output. Some generate values continuously (they're always "on"); some generate output based on the position of a particular slider, pedal or wheel on an external MIDI instrument. Some Sources generate output based on aspects of physical performance such as how loud, how fast, or how hard you play. The LXP-15 II allows you to choose from a selection of 78 different Sources for each Destination. A table of the Sources available on the LXP-15 II is shown on the following page, followed by a brief description of the different types of control Sources. 4-6 Creating Sounds and Effects Source InLevl Foot 5 Foot 4 Foot 3 Foot 2 Foot 1 Hi Note Low Note LFO Out Tempo PchBend Aftrtch Velocty LastNot PhasDep DetDept ChorDep TremDep ExtDept 70-90 Hold 2 68 Soft Sosten Portmnto Sustain 12-31 Expresn Pan 9 Balance Volume Data PortTim Foot 3 Breath Mod Whl 0 Description internal controller rear-panel analog controller rear-panel analog controller rear-panel analog controller rear-panel analog controller rear-panel analog controller highest MIDI note played lowest MIDI note played internal controller MIDI clock MIDI pitch bender MIDI channel pressure MIDI note on velocity last MIDI note played MIDI phaser depth control MIDI detune control MIDI chorus depth control MIDI tremolo depth control MIDI ext effect depth control MIDI controllers 70-90 MIDI hold2 ON/OFF MIDI controller 68 MIDI soft pedal MIDI sostenuto MIDI portamnto ON/OFF MIDI sustain pedal MIDI controllers 12-31 MIDI expression controller MIDI pan controller MIDI controller 9 MIDI balance controller MIDI volume controller MIDI data controller MIDI portamento time MIDI foot controller MIDI controller 3 MIDI breath controller MIDI modulation wheel MIDI controller 0 Type input envelope follower slider or switch slider or switch slider or switch slider or switch slider or switch note number note number LFO sinewave tempo bidirectional slider pressure velocity note number slider slider slider slider slider slider switch slider switch switch switch switch slider slider bidirectional slider slider bidirectional slider slider slider slider slider slider pressure slider slider Control Sources 4-7 LXP-15 II Owner's Manual Lexicon LFO The LFO Source is an internally generated low-frequency sinewave. [. . . ] The LXP-15 II doesn't respond to MIDI. · Check to make sure a MIDI cable is connected to MIDI OUT of the external device and to MIDI IN on the LXP-15 II. · Verify that you have the LXP-15 II and the external device communicating on the same MIDI Channel. A MIDI indicator in the upper lefthand corner of the display will flash to indicate the LXP-15 II is receiving MIDI data on the selected channel. [. . . ]