Yamaha SPX50D - Manual (Page 12)

3: DESCRIPTIONS OF THE EFFECT PROGRAMS
& THEIR PARAMETERS
/THE BALANCE AND OUTPUT /
/ LEVEL PARAMETERS /
Since all of the SPX50D effects have the same BALANCE and
OUT LVL (Output Level) parameters, we’ll describe them here
and leave them out of the descriptions of each effect that
follow. BALANCE and OUT LVL are normally the last two para­
meters called in an effect’s parameter list.
Effect/Direct Signal Balance (BALANCE): 0 — 100%
This parameter adjusts the balance between the direct
sound of your instrument (or other source) and the effect
signal. At 100% only the effect sound is delivered from the
SPX50D outputs, while at 0% only the direct sound is output.
At a setting of 50%, the direct and effect sounds are output
in approximately equal proportions.
Effect Output Level (OUT LVL): 0 —100%
This parameter sets the output level of the effect. This is
particularly handy for matching the levels between effects
when setting up an effect sequence for a live performance.
1. Rev 1 Hall
2. Rev 2 Hall
3. Rev 3 Hall
4. Rev 4 Room
5. Rev 5 Room
6. Rev 6 Vocal
7. Rev 7 Vocal
8. Rev 8 Vocal
9. Rev 9 Plate
10. Rev 10 Plate
Reverberation is the warm musical “ambience" you experience
when listening to music in a hall or other properly-designed
acoustic environment. The SPX50D offers ten different reverb
effects, simulating types of reverberation you would experience
in various halls (1 — 3), in smaller rooms (4 — 5), reverb effects
ideally suited to vocals (6 — 8), and the type of reverberation
produced artificially by a plate reverberator (9 — 10).
-(TIME)
Reverb Time (REV TIME): 0.3 — 99 seconds
The length of time it takes for the level of reverberation at 1
kHz to decrease by 60 dB — virtually to silence. In a live
setting, this depends on several factors: room size, room
shape, type of reflective surfaces, and others.
High Frequency Reverb Time Ratio (HIGH): x0.1 — x1.0
Natural reverberation varies according to the frequency of
the sound. The higher the frequency, the more sound tends
to be absorbed by walls, furnishings and even air. This
parameter allows alteration of the high-frequency reverb time
in reiation to the overall reverb time.
Initial Delay (DELAY): 0.1 — 50 milliseconds
This parameter represents the delay between the direct
sound of an instrument and the first of the many reflections
that together form reverberation.
High-pass Filter (HPF): THRU, 32 Hz --1000 Hz
Permits rolling off the the low-frequency content of the
reverb signal below the set frequency. The HPF is OFF
when set to THRU.
Low-pass Filter (LPF): 1 kHz —11 kHz, THRU
Permits rolling off the high-frequency content of the reverb
signal above the set frequency. The LPF is OFF when set to
THRU.
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