1-2-4 Filter. Yamaha MX88, MOX6, CP40, MOXF6, MOXF8, CP4, MOX8Synthesizer, MX61, MOX8, MX49

Voice Parameters

EG Time Key Follow

Sensitivity Center

Key

Determines the central note or pitch for the EG Time Key Follow.

When the Center Key note is played, the Pitch EG behaves according to its actual settings.

D

C

F

G

+63

+30

E

-40

B

A

Figure 9: Pitch EG Time Key Follow and Center Key

A: Center Key

B: Slower Speed

C: Faster Speed

D: Lower range

E: Higher range

F: Positive value

G: Negative value

1-2-4 Filter

A filter is a circuit or processor that modifies tone by blocking or passing a specific frequency range of the sound.

Filters work by allowing portions of the signal lower or higher than a given frequency to pass, and cutting the remainder of the signal. This given frequency is referred to as the Cutoff

Frequency. You can produce a relatively brighter or darker sound depending on how you set the Cutoff Frequency.

By adjusting the Resonance (which boosts the level of the signal in the area of the Cutoff

Frequency), you can produce a distinctive "peaky" tone, making the sound brighter and harder.

On the tone generator block of the Electronic Musical Instrument, the sound signal output from the Pitch unit is processed by the Filter unit.

Cutoff Frequency Determines the Cutoff Frequency for the Filter, or the central frequency around which the Filter is applied.

The tonal characteristics of the Voice and function of the Cutoff Frequency

differ depending on which Filter Type is selected (see Chapter 1-2-5 Filter

Type).

13

Voice Parameters

Cutoff Velocity

Sensitivity

Resonance

Width

Resonance Velocity

Sensitivity

Gain

Cutoff Key Follow

Sensitivity

Determines how the Cutoff Frequency responds to Velocity, or the strength with which you play notes.

„ Positive values: The Cutoff Frequency rises the stronger you play the keyboard.

„ Negative values: The Cutoff Frequency rises the softer you play the keyboard.

„ 0: The Cutoff Frequency does not change, regardless of the Velocity.

Resonance is used to set the amount of Resonance (harmonic emphasis) applied to the signal at the Cutoff Frequency.

This parameter can boost the level of the signal in the area of the Cutoff

Frequency. By emphasizing the overtones in this area, this can produce a distinctive "peaky" tone, making the sound brighter and harder.

This can be used in combination with the Cutoff Frequency parameter to add further character to the sound.

This parameter is available when an LPF, HPF, BPF (excluding the

BPFw), or BEF is selected as a Filter Type.

The Width parameter is used to adjust the width of the band of signal frequencies passed by the filter with the BPFw.

This parameter is available when a BPFw is selected as a Filter Type.

Determines the degree to which Resonance responds to Velocity, or the strength with which you play notes.

„ Positive values: The higher the Velocity, the greater the Resonance.

„ Negative values: The lower the Velocity, the greater the Resonance.

„ 0: No change of the Resonance value.

Determines the Gain of the signal sent to the filter.

The lower the value, the lower the Gain. The tonal characteristics generated by the filter differ depending on the value set here.

Determines the degree to which the notes (specifically, their position or

Octave Range) affect the Cutoff Frequency of the selected Element, assuming C3 as the basic pitch.

„ Positive values: The Cutoff Frequency drops for lower notes and rises for higher notes.

„ Negative values: The Cutoff Frequency rises for lower notes and drops for higher notes.

14

Cutoff Key Follow

Center Key

This indicates the central note for Cutoff Key Follow.

E F

G

D

+

A B

–

C

Voice Parameters

Distance

HPF Cutoff

Frequency

HPF Cutoff Key

Follow Sensitivity

HPF Cutoff Key

Follow Sensitivity

Center Key

Figure 10: Cutoff Key Follow and Center Key

A: Lower range

B: Center Key = C3

C: Higher range

D: Amount of Cutoff Frequency change

E: When Cutoff Key Follow Sensitivity = 100

F: Large

G: Small

Determines the Distance between the two Cutoff Frequencies of the Dual

Filter Types (which consist of two identical filters in parallel), and of the

LPF12+BPF6 type.

When any other Filter Type is selected, this parameter is not available.

Determines the central frequency for the Key Follow parameter of the HPF.

This parameter is only available for Filter Types LPF12+HPF12 and

LPF6+HPF6.

Determines the degree to which the notes (specifically, their position or

Octave Range) affect the Cutoff Frequency of the HPF.

„ Positive values: The Cutoff Frequency drops for lower notes and rises for higher notes.

„ Negative values: The Cutoff Frequency rises for lower notes and drops for higher notes.

This parameter is only available for Filter Types LPF12+HPF12 and

LPF6+HPF6.

This indicates the central note for HPF Key Follow Sensitivity.

15