Yamaha SPX900 SPX900 Owners Manual Image - Page 15

Height Fine: -100 - +100 This sets the value specified with HEIGHT as the reference value (0) and is the parameter for further fine adjustment. Depth Fine: -100 - +100 This sets the value specified with DEPTH as the reference value (0) and is the parameter for further fine adjustment. Wall Vary Fine (W. VARY FINE): -100 - +100 This sets each of the value specified with WIDTH, HEIGHT, DEPTH, and WALL VARY as the reference value (0) and is the parameter for further fine adjustment. W. Decay: RT x 0.1 - 10.0 Among the REV components, this sets the reverberation time of the REV components specified with WIDTH to a multiplier value corresponding to the REV TIME. It simulates the acoustic properties of the side walls. H. Decay: RTx 0.1 - 10.0 D. Decay: RTx 0.1 - 10.0 In the same way as for W. Decay, this sets a multiplier value corresponding to REV TIME for reverberation time felt in relation to the HEIGHT (vertical direction) in the height direction and that felt for the DEPTH in the front-to-back direction. It also simulates the acoustic properties of the walls in the vertical and front-to-back directions. PARAMETERS ACCESSED BY THE INT PARAM These are same as REVERB Programs. EARLY REFLECTION PROGRAMS ■ 14. PERCUSSION ER ■ 15. GATE REVERB ■ 16. REVERSE GATE ■ 17. PROGRAMMABLE ER These effects are created using different groupings of "early reflections" - the first cluster of reflections that occurs after the direct sound but before the dense reflections that are known as reverberation begin. PARAMETERS ACCESSED BY THE PARAM KEY Early Reflection Pattern Type (TYPE): PERCUSSION ER: S-HALL, L-HALL, RANDOM, REVERSE, PLATE, SPRING PROGRAMMABLE ER: USER-A, USER-B, USER-C, USER-D GATE REVERB & REVERSE GATE: TYPE A, TYPE B In the PERCUSSION ER program the TYPE parameter selects one of six different patterns of early reflections. S-HALL produces a typical grouping of early reflections that would occur in a performing environment such as a small hall. L-HALL simulates the early reflection pattern of a larger hall. RANDOM produces an irregular series of reflections that could not occur naturally. REVERSE generates a series of reflections that increase in level - like the effect produced by playing a recorded reverberation sound backwards. PLATE produces a typical grouping of reflections that would occur in a plate reverb unit, and SPRING produces the same for spring type reverb unit. In the PROGRAMMABLE ER program the TYPE parameter selects one of the four user-programmed early reflection patterns: USER-A, USER-B, USER-C or USER-D. The USER early reflection patterns are programmed using the utilitymode "USER ER EDIT" function (see "USER ER EDIT" on page 27 for details). In the GATE REVERB and REVERSE GATE programs the TYPE parameter selects either TYPE-A or TYPE-B. Room Size (ROOM SIZE): 0.1 - 25.0 This parameter sets the time intervals between the early reflections - a feature of natural early reflections which is directly proportional to the size of the room. Liveness (LIVENESS): 0 - 10 "Liveness" refers to the rate at which the reflected sounds fade. An acoustically "dead" room is simulated by setting this parameter to zero. Increasing the value of this parameter creates an increasingly "live" sound, simulating an increasing area of reflective surfaces in the room. LIVENESS ROOM SIZE INI DLY DIRECT SIGNAL Diffusion (DIFFUSION): 0 - 10 The complexity of the many reflections that make up reverberation varies according to the shape of the room and its contents. In the SPX900 the term "diffusion" refers to the complexity of these reflections. If the DIFFUSION parameter is set to "0," minimum complexity and therefore a clearer, more straightforward early reflection effect is produced. As the DIFFUSION value is increased, the complexity of the reflections increases producing a thicker, richer sound. Initial Delay (INI DLY): 0.1 - 400.0 milliseconds Initial delay is the time between the beginning of the direct sound and the beginning of the early reflections. 13