The vibrator pedal is an effects pedal present on some musical instruments, which is similar to a vibrato

Vibrato

Vibrato is a musical effect consisting of a regular, pulsating change of pitch. It is used to add expression to vocal and instrumental music. Vibrato is typically characterised in terms of two factors: the amount of pitch variation and the speed with which the pitch is varied .-Vibrato and...

, chorus

Chorus effect

In music, a chorus effect occurs when individual sounds with roughly the same timbre and nearly the same pitch converge and are perceived as one...

, or autopan, it combines a modulation

Modulation

In electronics and telecommunications, modulation is the process of varying one or more properties of a high-frequency periodic waveform, called the carrier signal, with a modulating signal which typically contains information to be transmitted...

 sequence with a noise gate

Noise gate

A Noise Gate or gate is an electronic device or software that is used to control the volume of an audio signal. In its most simple form, a noise gate allows a signal to pass through only when it is above a set threshold: the gate is 'open'. If the signal falls below the threshold no signal is...

 or envelope filter to create an effect not unlike a helicopter, with rapid cutting out and coming in—on and off. Most have variable speeds and depths, creating different sounds.

Vibrator Pickup

Also called a sustainer pick-up. A electromagnetic string driver placed near the high fretboard of an electric guitar

Guitar

The guitar is a plucked string instrument, usually played with fingers or a pick. The guitar consists of a body with a rigid neck to which the strings, generally six in number, are attached. Guitars are traditionally constructed of various woods and strung with animal gut or, more recently, with...

or mounted on a stand as in the Guitar Resonator.
The magnetic field is driven by the guitar pickup signal which causes a feedback loop that vibrates the strings. It is controlled via circuit board powered by a 9v battery inside the guitar or by an external supply). Sounds vibrator pickups make have been compared to strings sections, without the slow attack caused by a bow. An actual vibrator

Vibrator (sex toy)

Vibrators are devices for the body and skin, to stimulate the nerves for a relaxing and pleasurable feeling. Some vibrators are designed to ergonomically stimulate erogenous zones for erotic stimulation.-History:...

has the same effect.