Roland XV-3080 Modifying the Brightness of a Sound with a Filter TVF, PCH Envelope Pitch envelope

PCH ENVELOPE (Pitch envelope)

These parameters determine the amount of pitch enveloping

– changes to your basic pitch settings that occur over time – the effect of velocity on the pitch envelope, and the basic characteristics of the pitch envelope itself.

T1	T2	T3		T4
L1
L0			L3
Pitch				Time
key is			key is
pressed		L2	released	L4

Depth (Pitch envelope depth)-12–+12

This determines the amount of pitch enveloping to be used – higher settings result in more extreme enveloping. Negative (-) settings invert the direction of the changes made by the Pitch Envelope.

V-Sens (Pitch Envelope Velocity Sensitivity)- 63–+63

Adjust this parameter when you want your keyboard playing dynamics (velocity) to affect the amount of pitch enveloping. With higher settings, there will be a greater difference in the amount of enveloping when notes are played softly or when they’re played hard. Negative (-) settings will reverse the direction of change.

Time Keyfollow (Pitch envelope time keyfollow)-100–+100

Use this parameter when you want the keyboard location of notes to affect times T2–T4 of the pitch envelope. Higher values for this parameter will cause more extreme changes to the T2–T4 settings as you play further away from Middle C (C4) – at Middle C itself, your original T2–T4 settings are in effect. Positive (+) settings cause the times to be shortened for notes above Middle C. Negative (-) settings cause the times to be lengthened for notes above Middle C.

V-T1 (Pitch envelope time 1 velocity sensitivity)-63–+63

Use this parameter when you want keyboard playing dynamics (velocity) to affect T1 (Time 1) of the pitch envelope. With higher settings, the T1 value will change more significantly depending on whether you play softly or with greater force. With positive (+) settings, greater keyboard velocity will reduce the T1 setting. With negative (- ) settings, greater keyboard velocity will increase the T1 setting.

V-T4 (Pitch envelope time 4 velocity sensitivity)-63–+63

Use this parameter when you want keyboard playing

Chapter 4 Creating a Patch

dynamics (velocity) to affect T4 (Time 4) of the pitch envelope. With higher settings, the T4 value will change more significantly depending on whether you play softly or with greater force. For positive (+) settings, keyboard velocity will reduce the T4 setting. For negative (-) settings, keyboard velocity will increase the T4 setting.

L0 (Pitch Envelope Level 0)-63–+63

***** (change )This sets the amount of change applied to the Tone’s basic pitch when a key is first pressed.

T1–T4 (Pitch envelope time 1–4)0–127

These settings determine the times over which the basic pitch settings will change from one pitch envelope level (L1–L4) to the next.

L1–L4 (Pitch envelope level 1–4)-63–+63

Each pitch envelope level value determines an amount of change to be applied to the Tone’s basic pitch.

Modifying the Brightness of a Sound 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.

TVF FILTER

Type (TVF filter type)

This selects a filter type. A filter typically reduces, or attenuates, a specific frequency range within a Tone in order to accentuate its other frequencies.

OFF: No filter is used.

LPF: A Low Pass Filter reduces the volume of frequencies above the cutoff frequency in order to round off, or 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 strong characteristics 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 frequency. 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 frequency. This differs from LPF in that you can control the amount of the reduction using the

Chapter 4

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