User manual LEXICON LXP-5

[. . . ] However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment OFF and ON, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient the receiving antenna Relocate the computer with respect to the receiver Move the computer away from the receiver Plug the computer into a different outlet so that the computer and receiver are on different branch circuits. If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful: "How to identify and Resolve Radio/TV Interference Problems. " This booklet is available from the U. S. [. . . ] Not only can you adjust parameters with the front-panel ADJUST knob, but you can change them automatically with a number of control Sources. This ability to assign a control Source to an effect parameter is called "patching. " It is one of the most powerful features of the LXP-5. Patching allows you to create sounds and effects that change dynamically in response to realtime performance. To exploit the full potential of the LXP-5's patching abilities, it is helpful to understand which parameters control different aspects of an effect--and what, in fact, each effect is. Following is a brief overview of some common effects. If you are already familiar with these, you may want to skip ahead to the next section where we discuss patching on the LXP-5. Creating Sounds and Effects Sounds have distinctive characteristics which make them recognizable to us. It is no surprise then that an analysis of the sound waves generated, for example, by a piano can be readily distinguished from those generated by a wind instrument. The art of synthesizing sounds such as these is now commonplace. The simulation of effects is more concerned with our perception of sounds and, generally, requires synthesis of the environment in which sounds occur -- effects can create the impression of a piano playing in a padded cell, for example, or in a concert hall. All sounds are affected by their environment. From the moment a sound is generated and begins to travel (at the rate of one foot in about . 9 milliseconds), it begins to change -- merely passing through the air absorbs some of its energy. If the reflected sound continues to bounce back and forth between surfaces, it provides a long decaying "tail". To produce this effect, use 30-100ms of delay, in conjunction with feedback. Experiment with Hi and Lo cut filters to simulate different absorption characteristics of the reflecting surfaces (and of the air between them). To further enhance diffusion, try very small amounts of LFO modulation of delay time at a slow rate. Delay settings can be varied to create larger or smaller spaces. The longer the delay times, the larger the space. Variation in the amount of feedback corresponds to the hardness of the imaginary reflecting surfaces, and use of rolloff can simulate the effects of air absorption on the high end of the sonic spectrum. Echo Slap Echoes Ambient echo Plates Plate effects were originally generated by large, thin sheets of metal suspended upright under tension on springs. Transducers attached to the metal plate would transmit a signal which would, in turn, vibrate the plate. Because the plate provided a denser medium than air, sounds broadcast through it would seem to be occurring in a large open space. Synthesized plate effects mimic the sound of metal plates, with high initial diffusion and a relatively bright, colored sound. They are designed to be heard as part of the music, mellowing and thickening the initial sound itself. [. . . ] If a unit exposed to such conditions fails to operate after it returns to a normal operating temperature, contact Lexicon Customer Service. Overheating No output from the LXP-5. Check to see if Global Patches are set to Immediate mode. If you don't have a control source patched to a destination, the controller will go to its minimum value!If you don't have anything patched to the input and output parameters, this may result in no output. [. . . ]