Yamaha MOTIF7 Owner's Manual - Page 47

Basic Structure • Band Pass Filter This only passes a band of signals around the Cutoff frequency. The width of this band can be varied. Level Cutoff range Range passed Cutoff range Center frequency Frequency • Band Elimination Filter This attenuates a band of signals around the Cutoff frequency, but passes everything else. Level Range passed Cutoff range Rangepassed Center frequency Frequency ● FEG (Filter Envelope Generator) Using the FEG, you can control the transition in tone from the moment a note is pressed on the keyboard to the point at which it is released. As illustrated at right, the Filter Envelope consists of five Time (transition speed) parameters and five Level parameters (for the amount of filtering). When you press a note on the keyboard, the cutoff frequency will change according to these envelope settings. This is useful for creating automatic wah effects, for example. Furthermore, different FEG parameters can be set for each Element. Attack Decay1 Sustain Release Level Level Level Level Key off Level Main functions ● AEG (Amplitude Envelope Generator) Using the AEG, you can control the transition in volume from the moment a note is pressed on the keyboard to the point at which it is released. As illustrated at right, the Amplitude Envelope consists of five Time (transition speed) parameters and five Level parameters (for the amount of filtering). When you press a note on the keyboard, the volume will change according to these envelope settings. Furthermore, different AEG parameters can be set for each Element. Level Attack Decay1 Sustain Level Level Level Key off Release Level Init Level 0 Attack Decay1 Decay2 Time Time Time Release Time Time ■ LFO (Low Frequency Oscillator) Reference (page 147) As its name suggests, the LFO creates waveforms of a low frequency. These waveforms can be used to vary the pitch, filter or amplitude of each Element to create effects such as vibrato, wah and tremolo. LFO can be set independently for each Element; it can also be set globally for all Elements. Hold Level 0 Hold Time Attack Decay1 Decay2 Time Time Time Time Release Time ■ Amplitude Reference (page 145) This unit controls the output level (amplitude) of each Element output from Filter. The signals are then sent at this level to the Effect block. Also, by setting the AEG (Amplitude Envelope Generator), you can control how the volume changes over time. MOTIF Basic Structure 47