Roland SH-1000 Bedienungsanleitung

SH-1000

NSTRUCTION MANUAL

ROLAND SYNTHESIZER

SH-1000

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MOD GEN.

N\RATE~/ruRATE

POWER SWITCH

AMP. MOD.

V.C.F. SENS. [GROWL WAW A.D.S.R.)

NOISE GEN. RANDOM NOTE GLIDE PITCH

TREMOLO

V.C.O. MOD.

VIBRATO

^ENVELOPE

CONTROL

Volt. Cont. Filter

CUTOFF FREQ

RESONANCE

PORTAMENTO

ON/OFF TIME

TRANSPOSE

L/M/H

KEYBOARD

VOLUME

AMP. MOD.

FREQ. MOD (V.C.A.)

SPECTRUM (V.C.F.) COMBINATION

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Table of Contents

Comparison to the Organ

2. Theory of the Synthesizer

3. Function of theSH-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

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1. Comparison to the Organ 2. Theory of the Synthesizer

Asynthesizer 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.

The Voice Generator, which generates electronic signals that play

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

keyboard switch. As the wave form of the music sound produced

by the VCO has many harmonics, the desired tone is produced

through aVCF or "Voltage Controlled Filter".

The function of the Filter is also dependent on the voltage.

The signal through the VCF is modified with regard to the rising,

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-

thesizer operation.

There are included various kinds of voltage generators to modify

these three circuits.

Firstly, when akey is depressed, voltage is supplied to the ADSK

until release of key. This voltage is the basis of the various

envelopes.

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The Envelope, composing Attack(A), Decay(D), Sustain(S) and

Release(R), is shown in Figure Iin general form, and can be

varied according to control operation.

Two basic kinds of envelopes can be produced, namely AR and

ADSR. The ADSR and AR are also called Envelope Generators.

Figure 2shows the mutual relation among VCO, VCF, VCA and

ADSR. This is the general theory of Synthesizer operation.

Of course, besides the abovementioned, there are several other

functions -namely modulator, white-noise generator, etc.

Synthesizing these functions in many ways creates even more

complicated and more unique sounds.

Fig.1

Fig. 2

VCO

ADSR —*- Voltage

*- Signal

vco 3. Function of the SH-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 agreat many basic tones. Moreover, it is

possible to raise or lower the note by 1octave via Transpose

Switch. In addition, white-noise contributes non-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

-COMBINATIONS. C.O.>-

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(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. 41°

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DELAY

ODD

vco VCF

The VIBRATO effect emerges with aslight delay after depressing

the key. In the case of Legato playing, only the first note is given

this delay effect, and the VIBRATO effect continues in the

following notes.

If this effect is desired for each note, play each note only after

releasing previous note.

The VIBRATO effect is usualy obtained by the modulation

employing the sine wave. Using the square wave, however, brings

the characteristic jump of the musical interval. The degree of

jump is controlled by the Modulation knob.

(2) GLIDE

When pushing the GLIDE button while playing, the musical

interval drops, and as soon as the button is released, the musical

interval is gradually restored.

This produces aHawaiian guitar effect.

(3) PORTAMENTO

The PORTAMENTO effect is obtained by switching the PORTA-

MENTO lever to "ON". When using PORTAMENTO effect, one

note drifts to the subsequent note. This changing speed is adjusted

by the TIME knob.

b) VCF (Voltage Controlled Filter)

The VCF of the SH-1000 controls Cut-off Frequency and

Resonance.

As shown in Figure 5, the Cut-off Frequency control has the

function of cutting off the high frequency part of the harmonics

and plays an important role in tone production.

Note that over-cutting of the harmonics will cause elimination of

the basic frequency, and the sound will not be produced.

The Resonance control emphasizes the harmonics, producing a

peak slightly under the Cut-off Frequency.

Since over-emphasizing the peak causes oscillation of the other

frequency for the key depressed, it becomes an interruption in

the performance of melody except where special effect is desired.

There are also three Spectrum tablets to control VCF automat-

ically.

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VCF VCA

Fig. 6

SPECTRUMiVCT I

GROWL WAW ADSR.

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(1) GROWL

Pressing the GROWL tablet to "ON" creates akind of phase mod-

ulation, and the VIBRATO effect is obtained. This VIBRATO

effect differs from the VIBRATO effect added to the VCO on

nuance.

The Modulation Speed is controlled via the knob (~/nj) of the

Modulation Generator in the same way as the VIBRATO of the

VCO, and the Modulation Depth is controlled via the GROWL

knob.

(2) WAW

Pressing the WAW tablet to "ON" produces the WAW effect

which emerges automatically upon touching the key.

These GROWL and WAW effects depend strongly on the position

of the slide control knob for the Cut-Off Frequency.

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(3) ADSR

When this tablet is at "ON" position, the voltage of the ADSR

envelope is supplied to the VCF.

So, the Filter works with the VCA simultaneously, and very inter-

esting effects can be obtained.

The effects of GROWL, WAW and ADSR for the VCF are

controlled by the knobs of the VCF SENS panel section.

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c) VCA (Voltage Controlled Amplifier)

As in Figure 7, the VCA of the SH-1000 is operated by the five

tablets.

Fig. 7-ENVELOPE 'V CA,

ADS RSLOW ATTACK STACCATO PERCUSSION HOLD

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(l)HOLD

The HOLD is anote memory device, and the note for the key I

depressed is continued until next key is depressed even though j

the key is released. I

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VCA

For example, Staccato playing becomes the same as Legato play-

ing. So, it is convenient to synthesize the tone by continuing the

sounds.

(2) ADSR (Attack, Decay, Sustain, Release)

When this tablet is at "ON" position, the VCA is operated by the

ENVELOPE MODE produced by the ADSR.

As in Figure 8, sliding the Attack knob upwards increases the

rising time.

Sliding the Decay knob upwards increases the diminishing-time.

The Sustain knob controls the sound volume-after decay.

The Release perfectly controls the time of sound disappearance

after releasing the key.

The Attack, Decay and Sustain form the envelope during key

depression, and the Release forms the envelope after key release.

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(3) SLOW ATTACK

Pressing this tablet to "ON" brings aslow rising sound such as

produced by aviolin or an accordion.

(4) STACCATO

Pressing this tablet to "ON" causes aStaccato-like sound (like the

sound of PIZZICATO playing of aviolin) regardless of key de-

pression time.

(5) PERCUSSION

Pressing this tablet produces accents to the sound, operating the

VCA to supply percussive envelope. As these envelope modifying

tablets operate on the "right-side-tablet-take-precedence" system,

the right end tablet alone works regardless of other tablets de-

pression.

(6) AMP. MODULATION

The tablet shown in Figure 9, works to supply Tremolo effect to

the sound. When employing sine wave (/v) it is of the usual

Tremolo, and for saw-tooth wave (nn )it produces an effect like

the Tremolo playing of aMandolin.

These waves all operate the VCA.

The speed and the depth of this Tremolo effect are adjusted by

the knobs shown in Figure 9.

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