Roland TD-25 Parameter Manual page 21

Multi Effects
OVERDRIVE
Mildly distorts the sound. The tone quality of the distorted sound is adjusted with a filter.
Parameter Value
Pre HPF BYPASS, 16–1000 Hz
Drive 0–127
Tone
0–127
ISOLATOR
This is an equalizer which cuts the volume greatly, allowing you to add a special effect to the sound by
cutting the volume in varying ranges.
Parameter Value
Boost/Cut Low -64–+63
Boost/Cut Mid -64–+63
Boost/Cut High -64–+63
RING MODULATOR
This is an effect that applies amplitude modulation (AM) to the input signal, producing bell-like sounds.
You can also change the modulation frequency in response to changes in the volume of the sound sent
into the effect.
Parameter Value
Mode RING MOD, ENV OSC
Frequency 0–127
Sensitivity 0–127
Polarity UP, DOWN
Explanation
Frequency of the filter that cuts the low-frequency content of the input
sound (BYPASS: no cut)
Amount of distortion
Tone quality of distorted sound
Explanation
Boosts and cuts the low frequency ranges.
At -64, the sound becomes inaudible. 0 is equivalent to the input level
of the sound.
Boosts and cuts the middle frequency ranges.
At -64, the sound becomes inaudible. 0 is equivalent to the input level
of the sound.
Boosts and cuts the high frequency ranges.
At -64, the sound becomes inaudible. 0 is equivalent to the input level
of the sound.
Explanation
RING MOD: Applies amplitude modulation to the input signal
ENV OSC: Outputs oscillation corresponding to the input signal
Adjusts the frequency at which modulation is applied.
Adjusts the amount of frequency modulation applied.
Determines whether the frequency modulation moves towards higher
frequencies (UP) or lower frequencies (DOWN).
STEP RINGMOD
This is a ring modulator that uses a 8-step sequence to vary the frequency at which modulation is
applied.
Parameter Value
Mode RING MOD, ENV OSC
Freq Modify -64–+63
Attack 0–127
Rate 0–127
Freq Step 1–8 0–127
PITCH SHIFT
Shifts the pitch of the original sound. This pitch shift can add two pitch shifted sounds to the original
sound.
Parameter Value
Pitch1 -24–+12 semi
Pitch1 Level 0–127
Pitch2 -24–+12 semi
Pitch2 Level 0–127
DlyTime 0–1300 msec
Feedback -98–+98 %
Wet Gain Low
-15–+15 dB
Wet Gain High -15–+15 dB
AUTO PAN
Cyclically modulates the stereo location of the sound.
Parameter Value
Rate 0–127
Depth 0–127
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Explanation
RING MOD: Applies amplitude modulation to the input signal
ENV OSC: Outputs oscillation corresponding to the input signal
Increases/decreases value for all steps
Speed at which the modulation frequency changes between steps
Rate at which 8-step sequence is to be repeated
Frequency of ring modulation at each step
Explanation
Adjusts the pitch of Pitch Shift 1 in semitone steps.
Volume of the Pitch Shift 1 sound
Adjusts the pitch of Pitch Shift 2 in semitone steps.
Volume of the Pitch Shift 2 sound
Adjusts the delay time from the direct sound until the Pitch Shift sound
is heard.
Adjusts the proportion of the pitch shifted sound that is fed back into
the effect.
Negative (-) settings will invert the phase.
Amount of boost/cut for the effect sound's lower range
Amount of boost/cut for the effect sound's upper range
Explanation
Frequency of the change
Depth to which the effect is applied