Using the internal sound generator

Portamento SW [cc#65]

ON/OFF, (PATCH: Native mode only)

Turn this ON when you want to use portamento.

Portamento Time [cc#5]

0–127, (PATCH: Native mode only)

Adjusts the time over which the next pitch will be reached.

Portamento is a function that changes the pitch smoothly from one note to the next.

Portamento will be switched on/off when a Portamento message is received. Portamento Time specifies the speed of the pitch change. A Portamento Control message can be received to specify the “source note number” (the previously played note).

*When you apply portamento by playing a note that is below the currently played note, the range of the effect may be limited (approximately two octaves).

Filter

You can adjust the tonal character of the sound by editing the filter values. The filters of the SD-80 are a type called Low Pass Filters, which pass the region of sound that lies below a specified frequency. This frequency is called the Cutoff Frequency. By adjusting the cutoff frequency, you can make the sound brighter or darker.

The cutoff frequency will also change over time according to an envelope. By adjusting the filter and envelope, you can create sounds that have movement and expression.

Higher frequencies

Low

pass

filter

Cutoff frequency

Lower frequencies

TVF Resonance [cc#71]

-64–0–+63

Increasing the resonance value will emphasize the harmonics in the region of the cutoff frequency, giving a distinctive character to the sound.

*For some sounds, negative (-) settings of Resonance will not produce any audible difference.

Level

Frequency

Cutoff frequency

Low High

Resonance

TVF Cutoff Freq (TVF Cutoff Frequency) [cc#74] -64–0–+63

Sets the cutoff frequency of the filter.

Positive (+) settings for the Brightness parameter will raise the cutoff frequency. Negative (-) settings will lower the cutoff frequency. Increasing this value in the positive direction will pass more of the high- frequency component, making the sound brighter (harder). Increasing this value in the negative direction will cut more of the high-frequency component, making the sound more mellow (darker).

*For some sounds, positive (+) settings of TVF Cutoff Freq will not produce any audible difference.

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