Gakken SX-150 Montaj ve Kullanım Kılavuzu - Sayfa 3

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Descriptions of

By learning about the functions of each switch and knob, you can learn how to

Each Part and

combine those functions together to produce sounds.

Their Functions

PITCH ENV

Amount of change in the

rise/fall in pitch of the sound.

ATTACK/DECAY

Amount of time for the

sound volume to rise/fall.

LFO WAVE

Varying waveform of

pitch of the sound.

LFO RATE

Speed of variation

of pitch.

Speaker

Outputs sound.

(Used when no device

is connected to

OUTPUT)

LFO

PITCH ENV

LFO is the abbreviation of Low

Short for PITCH ENVELOPE.

Frequency Oscillator and refers to

Changes the pitch in accordance

an oscillator that operates at low

with the curve of the envelope

frequency. It changes slowly over

(time variations of the sounds).

Pitch

a constant cycle. It changes pitch

of the original tone.

Pitch

LFO WAVE

Changes the shape of the wave

produced by LFO

Time

Triangle wave:

A wave traveling along in a linear

manner that repeatedly seesaws

up and down.

ATTACK/DECAY

Square wave:

A wave with 50% of the width of a

pulse wave that repeats at regular

intervals.

LFO RATE

Adjusts the speed of the

repetition of the wave produced

by LFO.

CUTOFF

RESONANCE

Depth of the filter.

Amount of resonance in the sound.

EXT. SOURCE

External input terminal

OUTPUT

Terminal for connecting to

a speaker or the like.

POWER LED

Lights up red when the power

is ON.

POWER

OFF (Volume at 0)

LO (Volume low)

HI (Volume high)

Slider panel/Electrode

Play sounds by touching the

Slider panel

slider panel with the electrode.

CUTOFF

RESONANCE

CUTOFF

Resonance refers to

CUTOFF produces sounds of

"resonating" and accentuates

frequencies lower than the

sounds at frequencies near

frequency set and cuts out

those set by the CUTOFF.

Output

sounds of higher frequencies.

Output

Frequency

Time

Frequency

Determines the shape of the envelope. ATTACK changes the rising time for the sound.

DECAY changes the decay time of the sound. This envelope affects CUTOFF and the

pitch.

Volume

Time

EXT. SOURCE

Short for EXTERNAL SOURCE. An external

input terminal. For example, by connecting it

to a Theremin Mini, you can play sounds on

the Theremin Mini using the sound source on

the SX-150.

Connect a Theremin Mini with a modified

jack and EXT. SOURCE on the SX-150

together with a monaural cord.

Electrode

Set the knobs and switches on the SX-150 as shown below, and turn on the switch for the

Theremin Mini. You can control LFO, CUTOFF, and RESONANCE, but PITCH ENV and

ATTACK/DECAY cannot be changed.

Tune the Theremin Mini. The

method for tuning it is basically the

same as that for when the Theremin

Mini is used on its own. After turning

the left control dial all the way to the

right, start turning it slowly to the

left, a little bit at a time. Difference

between this and when the

Theremin Mini is used on its own is

that the pitch not only goes lower

but also goes higher, but the step to

stop right before sound stops being

produced is the same.

As with a regular theremin, if you create a zero point, the range within which you can play

sounds by moving your hand will get narrower. If this occurs, play sounds with tuning having

been completed while sounds were still being produced. Try switching LFO WAVE and changing

LFO RATE and further changing CUTOFF and RESONANCE. You can also use CUTOFF for the

volume control as well.

Frequency

OUTPUT

An external output terminal. Sound quality will increase if the kit is connected to an

external speaker with amplifier for PC or a musical instrument amplifier. This is a

monaural terminal, so you'll only get sound from one channel if you connect to a

stereo device.

Time

Try Producing

Sounds

* Theremin Mini is the supplement

of Vol. 17 of the Otona no Kagaku

(Science for Adults) Magazine.

To connect the Theremin Mini to

Musical instruments

the SX-150, complete the

modification procedures for

installing a standard jack as

Guitar

described on p. 70 "Improving

Sound Quality" of the magazine

Vol. 17.

Wind

instrument

Monaural cord

(Can also use a stereo cord)

Synth

drum

To a modified

Theremin Mini

Sound effects

Cat

meowing

Dog

barking

UFO

Train

departure

bell

Car

engine

The knob positions are provided

only as rough guides. Search for

the closest equivalent sound as

possible by adjusting the knobs

to the left and right around what

is shown in the pictures.

You will get a guitar sound if you play at a higher pitch and a bass guitar sound if you play at

a lower pitch.If you increase the DECAY, you can produce sounds that approximate those of

a piano.

From the settings for the guitar sounds, you can change the sound to that of a wind

instrument by raising ATTACK slightly and making the rise for the sound slower.

Try to create the sound of the synth drum used by YMO.

By varying the setting of PITCH ENV, you can also change it to create the sounds

used in video games.

Adjust ATTACK and DECAY to produce the kind of cat meow you want.You can

quickly change to an elephant's sound by increasing LFO RATE.

There are many kinds of dog barks. This one is more like a yip-yip than a

woof-woof.

This sound doesn't actually exist in the real world, but it will make you think of

UFOs when you hear this eerie sound.

You can get a bell sound if you set LFO WAVE to square wave. Changing LFO RATE will

allow you to produce the sound of a telephone ring.

You can get a sound that's even closer to the real thing if you raise LFO RATE while sliding the

electrode from left to right along the slider panel.