Simple Editing: Tone (Filter) - Yamaha SY99 Owner's Manual

Each element in a voice has two filters which can be used to make overall adjustments in tone. A filter can
be controlled in various ways. Controlling a filter by key-on velocity is a simple way to make a voice
respond expressively to your keyboard playing.
What is a filter
Turn off unwanted
elements
Specify the type of filter
and the cutoff frequency
66

Simple editing: tone (Filter)

In electronic musical instruments, a filter removes a specified range of fre-
quencies from the sound, and allows the rest to pass through. For example if the
high frequencies are removed and the low frequencies allowed to pass through,
the sound will be made darker. This type of filter is called a Low Pass Filter
(LPF). The frequency at which the filter begins to affect the sound is called the
Cutoff Frequency.
Each of the one, two, or four elements in a normal voice contains two filters,
which can be controlled independently. One filter is fixed as a Low Pass Filter
(LPF). The other filter can be used either as a LPF or as a High Pass Filter
(HPF); i.e., a filter that allows only high frequencies to pass, resulting in a thin-
ner tone.
Each normal voice consists of one, two, or four elements, and each element has
its own set of two filters. If the voice you are editing contains two or four ele-
ments, it may be helpful to listen to only one element as you adjust its filters. To
the right of the voice name displayed in the voice edit job directory is a list of the
elements used by the currently selected voice.
The voice selected in the above display uses two elements. Press EL 2 (the
bank B button) to turn off element 2. Now you will hear only element 1. Press EL
2 once again and it will be turned on. You can turn each element on/off at any
time while editing.
Press F3 to select the voice edit Element 1 job directory, select 08:Filter, and
press ENTER.
Filter parameters are divided into three jobs. Press F1 to select 01:Cutoff
Frequency.