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Resumen del manual
nnRATE'MuRATE POWER SWITCH V.C.F. SENS. [GROWL WAW A.D.S.R.] NOISE GEN. RANDOM NOTE GLIDE PITCH AMP. MOD. TREMOLO \ V.C.O. MOD. VIBRATO ©ENVELOPE J CONTROL Volt. Cont. Filter JS CUTOFF FREQ RESONANCE AMP. MOD. FREQ. MOD. ENVELOPE PRESET (V.C.A.) SPECTRUM (V.C.F.) COMBINATION PORTAMENTO ON/OFF TIME TRANSPOSE L/M/H KEYBOARD VOLUME ©ENVELOPE CONTROL Table of Contents 1. Comparison to the Organ 2. Theory of the Synthesizer 3. Function of the SH-1000 a) VCO (Voltage Controlled Oscillator) b) VCF (Voltage Controlled Filter) c) VCA (Voltage Controlled Amplifier) d) Pre-setting 4. Operation 5. Tuning 6. Accessories 7. Synthesis of Unique Sounds 1. Comparison to the Organ 2. Theory of the Synthesizer A synthesizer is not an organ. The usual electronic organ is not able to freely modify sound envelopes characterized by “Attack”, “Decay” and “Sustain” etc. all of which play an important role in the quality of musical sounds. Here, “Attack” means the rising of the sound, “Decay”, the diminishing of the sound and “Sustain”, the maintaining of the sound, while “Envelope” is defined by the curve of these characteristic elements. The Synthesizer, however, can modify these elements to change envelope characteristics and thus modify volume and tone to-synthesize many sounds which are unlike any which can be produced by conventional instruments, in addition to sounds which are exactly like those of conventional instruments. Thus, the Synthesizer has the inherent capability of extending the range of musical conception through production of unique new sounds. 3 The Voice Generator, which generates electronic signals that play j an important role in all electronic musical instruments, is | composed of the VCO “Voltage Controlled Oscillator”, and its | musical interval is controlled by the voltage coming from the g keyboard switch. As the wave form of the music sound produced I by the VCO has many harmonics, the desired tone is produced 1 through a VCF or “Voltage Controlled Filter”. | The function of the Filter is also dependent on the voltage, j The signal through the VCF is modified with regard to the rising, 1 falling or the maintaining of sound by the function of the VCA | “Voltage Controlled Amplifier". | Consequently, the VCO, VCF and VCA are the crux of Syn- j thesizer operation. I There are included various kinds of voltage generators to modify f these three circuits. Firstly, when a key is depressed, voltage is supplied- to the ADSK j until release of key. This voltage is the basis of the various envelopes. I | The Envelope, composing Attack(A), Decay(D), Sustain(S) and 1 Release(R), is shown in Figure I in general form, and can be 1 varied according to control operation. I Two basic kinds of envelopes can be produced, namely AR and ADSR. The ADSR and AR are also called Envelope Generators. Figure 2 shows the mutual relation among VCO, VCF, VCA and I ADSR. This is the general theory of Synthesizer operation. I Of course, besides the abovementioned, there are several other 1 functions — namely modulator, white-noise generator, etc. Synthesizing these functions in many ways creates even more complicated and more unique sounds. Fig-1 Key Key ON OFF Fig. 2 KEYBOARD -► VCO *- VCF VCA •’-OUT ADSR --► Voltage -.....Signal 4 vco 3. Function of the SFI-1000 a) VCO (Voltage Controlled Oscillator) The VCO of the SH-1000 is composed of 9 combination tablets, as shown in Figure 3, and is able to produce eight kinds of pitch wave forms (32’ — 2’). Of course it is possible to combine these wave forms to produce a great many basic tones. Moreover, it is possible to raise or lower the note by 1 octave via Transpose Switch. In addition, white-noise contributes tion-tonal sounds. The pitch of the VCO can be adjusted via the Pitch Knob. In addition, Vibrato, Glide and Portamento effects can also be obtained by including each in the VCO circuit as desired. Fig. 3 ■.............................................................. -COMBINATION .V.C.OJ—i.............. —..................... WHITF 32 «''Vi i6fU"L 16-IUL 8 nTL 8 fUL 8' /VI 4 /VI 2 flfl □□□□□□□□□ (1) VIBRATO This effect is produced by supplying the oscillated voltage of the Modulation Generator to the VCO. As in Figure 4, lower the VIBRATO tablet, turn the Modulation knob of the VCO, and the VIBRATO effect is obtained. The depth of the VIBRATO is controlled by the Modulation knob, and the rate of the VIBRATO is adjusted by the RATE knob of the Modulation generator. Fig. 4 1° BS1 00 BH 1° 0 °l Ifol 1 1 1 1 IT] O .1! LiiilJ 111111 [ll 1 11 11111 TIT 1 - FREQ.MOO.- wru DELAY VIBRATO □ □□ 5 vco VCF I The VIBRATO effect emerges with a slight delay after depressing | the key. In the case of Legato playing, only the first note is given I this delay effect, and the VIBRATO effect continues in the I following notes. I If this effect is desired for each note, play each note only after ...