Yamaha REV7 REV7 Owners Manual Image - Page 19

13. STEREO PHASING This effect is variable from an almost imperceptible slow-moving phase shift, to a rapid pulsation. The effect is created as follows. The input signal is split up into right and left signals. The right channel is delayed very slightly in relation to the left channel. A third signal, placed in the center of the stereo image, has its delay time modulated between zero and the right channel delay time setting, by the LFO. This means that the center signal will periodically "approach" and "meet" the left and right channels alternately, causing phase changes as it does so. This is a totally controllable digital version of the original phasing method: playing back the same signal on two tape decks whose minute fluctuations in speed caused phase changes -a rather haphazard method. The timing differences need to be very small, and on the R EV7 can be set as low as 0.1 msec. 14. TREMOLO The tremolo preset is adjustable from a slow once-everyten-seconds roll to a twenty-times-a-second vibrato. It is produced in virtually the same manner as the Chorus preset, with the amplitude modulation emphasized (for a deeper, more rapid modulation). Most conventional tremolo effects use amplitude modulation and nothing more. The other parameters of this preset add extra richness and dimension, for a really modern, sophisticated sound. 15. SYMPHONIC Another effect based on the same modulation system as the Chorus preset. This time, the delay time modulation is more rapid and deeper, giving the effect more movement and more width, to create an expansive, spacious effect from any input signal. 16. SPRING Spring reverb, featured in many low-price reverberation devices, and often built into combo amplifiers or organs, can add a pleasing, bright ambient quality to high register instruments (lead guitar, flute) as well as vocals. 17. ECHO ROOM The authentic sound of the original echo device-the Echo Room, where the sound was transmitted from one end of a specially reflective room, and picked at the other end by a mike. A long, rich reverb effect versatile enough for all instruments. 18. STRINGS The first of several preset effects specifically designed for use on named instruments, though of course they can be used for any purpose. They all feature the six "modes" described in preset 5, above. For a string orchestra, the most natural reverb is found in older, "medium" size concert halls, and this reverb type program accurately simulates this environment. 19. ELECTRIC BASS A This E/R1 type preset actually creates the fullness and depth of a large reflex speaker cabinet of the type used for amplifying a bass guitar. So with a "direCt injection" bass guitar you can achieve a rich deep sound without the inherent problems caused by miking up speaker cabinets. With this widely variable preset you can, simulate a variety of tube amplifiers and speaker enclosures. 20. ELECTRIC BASS B This E/R2 type program is more "live" than the previous effect, and can add briliance and "spice" to complex, funky bass riffs. 21. KICK Superfast delays in this E/R1 type preset actively boost the sound of a bass drum, adding a vivid, yet solid presence, ideal for hard and heavy rock. 22. SNARE With this reverb type preset, you can transform an ordinary snare drum into a classic "wall of sound" effect used in many rock recordings. 23. GATE REVERB A common studio effect on contemporary recordings is produced by linking up various effects units-reverberator, digital delay, noise gate, compressor-so that a powerful reverb is produced, which suddenly cuts off, instead of fading gradually. This E/R1 type program reproduces that effect, and is nothing short of astounding when used on drums, creating an enormous sound that does not overhang and cloud up the overall sound of the band. 24. REVERSE GATE Closely related to the GATE REVERB preset, this program actually gives the impression of a reverse reverb effect. The reverb builds in intensity before cutting off sharply and dramatically. 25. PIANO The impressive sound of a concert grand piano in an ideal room setting can be created from virtually any piano, by the judicious use of this E/R2 type effect. 26. ORGAN With this E/R1 type preset it is possible to give an electronic organ the expansive, mellow sound of an old "tube" organ with its large wooden speaker cabinets. 27. BRASS Another useful E/R1 type effect, the BRASS preset enables you to add punch and "sizzle" to brass instruments, retaining their brilliance while expanding their harmonic qualities. 28. GUITAR An E/R2 type preset providing a mellow ambience that will delicately enhance the tone of any fine acoustic guitar. 29. HANDCLAPS This short, sharp reverberation type effect adds an almost metallic presence and fullness to handclaps, for a truly contemporary sound. 30. LIVE REFERENCE This E/R2 type preset simulates a "standard" live atmosphere. The effect is of a small, yet live, resonant room, elevating the tonal quality of any instrument or vocal to a brilliant, powerfully ambient timbre. 18