DISTURBER

The electric signal amplitude decreases rapidly — within 2-4 s after pinch the strings, it accounts for only 20-30% of the maximum level. At the same time changing the tone color of the sound. This circumstance restricts the possibility of using the electric guitar as a solo instrument. That’s why natural “voice” strings replaced its electronic similarity with a constant volume level. For the first time such a device has used the group “the Beatles”. Now the same email attachment to AMY is known as disturber (deformer), or “FUZZ”.

In disturbare the signal from the guitar is amplified hundreds of times, and then subjected to bilateral restriction on the release of the console has a constant amplitude and timbre color. The device can extend the sound of single tones (notes) to 10 seconds.

 

The sound effect is particularly noticeable if disturbare applied a little noisy transistors h219=300-500, allowing to obtain a satisfactory restriction of the signal at low noise level. However, in some samples the observed dependence of mode constraints on the magnitude of the signal from the guitar, giving a fuzzy, vague sounding tone. Moreover, in transistor disturbare almost impossible to get symmetrical limit because of the saturation of a semiconductor triode with a large level of the input voltage. That’s why a sound generator and a sensitive oscilloscope so hard in Amateur conditions carefully adjust the prefix “FUZZ”.

Disturber, which we offer to our readers, on the principle of action is different from the su-striding development, has bilateral constraint, and the noise gate is simple to set up. Here’s how the device works.

 

The signal from the guitar to the input of pre-amplifier, made on field-effect transistor V1 type КП103К, L or M (see circuit diagram). The sensitivity of the cascade to regulate a variable resistor R2 depending on a specific musical instrument.

 

 

Schematic diagram of disturber.

 

Then electric oscillations of audio frequency and amplitude of at least 25-30 mV serves on the amplifier-limiter, assembled on the chip A1. After the signal has bilateral limit, a constant amplitude and constant duty cycle, giving a clearer sound tones rich range of tone.

 

Since the total gain of disturber exceeds 100, it has a squelch circuit which does not pass to the output noise pickup, electric guitar and background noise of the amplifier.