Changing The Brightness With A Filter (Tvf) - Roland XV-5050 Owner's Manual

Chapter 1 Creating a Patch
Parameter
Envelope V-T1 Pitch Envelope
Time 1 Velocity
Sensitivity
Envelope V-T4 Pitch Envelope
Time 4 Velocity
Sensitivity
Envelope L0– Pitch Envelope
L4 Level 0–4
Envelope T1– Pitch Envelope
T4 Time 1–4

Changing the Brightness with a Filter (TVF)

The settings for the TVF (Time Variant Filter) allow you to change a Tone's timbral content by altering its brightness or thickness.
Parameter
TVF
Filter Type
Cutoff Frequency
Resonance
46
Value Description
-63–+63 Use this parameter when you want keyboard playing dynamics to affect T1 (Time 1) of the pitch envelope. If
you want T1 to be sped up for strongly played notes, set this parameter to a positive (+) value. If you want it
to be slowed down, set this to a negative (-) value.
-63–+63 Use this parameter when you want key release speed to affect T4 (Time 4) of the pitch envelope. If you want
T4 to be sped up for quickly released notes, set this parameter to a positive (+) value. If you want it to be slowed
down, set this to a negative (-) value.
-63–+63 Specify the pitch envelope levels. They determine how much the pitch changes from the reference pitch (the
value set with Coarse Tune and Fine Tune) at each point. Positive (+) settings cause the pitch to be higher than
the standard pitch, and negative (-) settings cause it to be lower.
0–127 Specify the pitch envelope times. Higher settings lengthen the time until the next pitch is reached. (For exam-
ple, T2 is the time over which the pitch changes from L1 to L2.)
Value Description
OFF, LPF, BPF, HPF, Selects a filter type. A filter typically reduces, or attenuates, a specific frequency range with-
PKG, LPF2, LPF3 in a Tone in order to accentuate its other frequencies.
* This disables the Resonance setting.
* This disables the Resonance setting.
0–127 Adjusts the frequency at which the filter begins to have an effect on the waveform's frequen-
cy components. With LPF/LPF2/LPF3 selected for the Filter Type parameter, lower cutoff
frequency settings reduce a Tone's upper harmonics for a more rounded, warmer sound.
Higher settings make it sound brighter. When Filter Type is BPF, the cutoff frequency setting
determines the range of frequencies within the Tone that will be heard. This can be useful
when creating sounds that need to stand out. When Filter Type is HPF, higher settings of the
cutoff frequency decrease the level of the Tone's low frequencies, preserving its brighter
qualities. When Filter Type is PKG, the cutoff frequency setting determines the range of fre-
quencies to be emphasized.
0–127 Increases the level of the cutoff frequency itself to add a popular classic synth character to
the sound. Excessively high settings can produce oscillation, causing the sound to distort.
OFF: No filter is used.
LPF: A Low Pass Filter reduces the volume of frequencies above the cutoff frequency in
order to un-brighten the sound. This is the most common filter used in synthesizers.
BPF: A Band Pass Filter reduces the volume of frequencies below and above the cutoff
frequency range. This is most effective when creating sounds with a strong character
since it can accentuate a desired range of frequencies anywhere in the sound.
HPF: A High Pass Filter reduces the volume of the frequencies below the cutoff frequen-
cy. This is suitable for creating percussive sounds by rolling of their lower frequencies,
thus emphasizing their higher ones.
PKG: A Peaking Filter emphasizes frequencies around the cutoff frequency by raising
their level. You can use this to create wah-wah effects by employing an LFO to change the
cutoff frequency cyclically.
LPF2: Low Pass Filter 2. This reduces the volume of all frequencies above the cutoff fre-
quency. This differs from LPF in that you can control the amount of the reduction using
the TVF ENVELOPE settings while still maintaining a fixed cutoff frequency. This can be
very effective with acoustic-instrument-based Tones, since nothing is done to weaken the
power and energy of the sound.
LPF3: Low Pass Filter 3 reduces the volume of frequencies above the cutoff frequency.
While similar to LPF2, it reduces the frequencies more gently than LPF2. This can also be
effective with acoustic-instrument-based Tones.
LPF BPF
Level
High
Frequency
Cutoff frequency
Low
HPF PKG