Casio CTK 671 User Guide - Page 40

Synthesizer Mode The Synthesizer Mode of this keyboard provides the tools for creating your own original tones. Simply select one of the built-in tones and change its parameters to create your own original sound. You can even store your sounds in memory and select it using the same procedure as that used to select a preset tone. Synthesizer Mode Functions The following describes how to use each of the functions available in the Synthesizer Mode. Synthesizer Mode Parameters The preset tones that are built into this keyboard consist of a number of parameters. To create a user tone, you first recall a General MIDI tone (100 to 227) or a preset tone (000 to 099) and then change its parameters to change it to your own tone. Note that drum set tones (228 through 237) cannot be used as the basis of a user tone. The illustration below shows the parameters that make up the preset tones and what each parameter does. As can be seen in the illustration, these parameters can be divided into four groups, each of which is described in detail below. Tone Characteristic Waveform Tone Setting Volume Characteristic Parameters bAttack Time bRelease Time bResonance bCutoff Frequency Tone Pitch Parameters bVibrato Type bVibrato Delay bVibrato Depth bVibrato Rate bOctave Shift Tone Characteristic Setting Parameters bLevel bTouch Sense bReverb Send bChorus Send bDSP Line bDSP Type bDSP Parameter Output (1) Tone Characteristic Waveform I Tone Setting Specifies which of the preset tones should be used as the original tone. (2) Volume Characteristic Parameters These parameters control how the tone changes over time, from when the keyboard key is pressed until the tone decays. You can specify changes in volume and sound characteristics. I Attack time This is the rate or time it takes for the tone to reach its highest volume level. You can specify a fast rate, where the tone reaches its highest volume level immediately, a slow rate where it gradually rises, or something in between. I Release time This is the rate or time it takes for the tone volume to fall to zero. You can specify a release that ranges from a sudden fall to zero, to one that gradually falls to zero. Envelope Note ends A Key pressed A: Attack time R: Release time R Key released Time I Cutoff Frequency The cutoff frequency is a parameter for adjusting timbre by cutting any frequency that is higher than a specific frequency. A larger cutoff frequency produces a brighter (harder) timbre, while a smaller frequency produces a darker (softer) timbre. Level ❚ NOTE • Synthesizer Mode operations affect the tone selected for Channel 1. Cutoff frequency Frequency E-38 703A-E-040A