Phaser

Electric guitar effect   Phasing is a popular effect for electric guitar. The term was often used to refer to the original tape flanging effect heard on many psychedelic records of the late 1960s. In 1968, Shin-ei’s Uni-Vibe effects pedal, designed by audio...

Ring Modulator

Analog telephony   The original application of the ring modulator was in the field of analog telephony for frequency-division multiplexing for carrying multiple voice signals over telephone cables.Frank A. Cowan invented it back in 1934 and patented in 1935 as an...

Frequency Shifter

What is a frequency shifter?   Frequency Shifter is a device which raises or lowers the frequency of an input signal. It does this using a complex amplitude modulation like technique. Unlike the pitch shifter, the frequency shifter does not preserve the harmonic...

Vibrato

Adding Warmth   The use of vibrato is intended to add warmth to a note. In the case of many string instruments, the sound is strongly directional, particularly at high frequencies. The slight variations in pitch typical of vibrato playing can cause large changes...

Rotary Speaker

Rotary speaker origins   The rotary speaker is also known as Leslie speaker, due to his inventor Donald Leslie. He created and manufactured the Leslie speaker which refined the sound of Hammond organ and popularized electronic music. Donald Lesslie was impressed...

Chorus Effect

The Chorus phenomenon   Chorus effect occurs when several individual sounds with similar pitch and timbre play in unison. This phenomenon occurs naturally with a group of singers or violinists, who will always exhibit slight variations with pitch and timing, even...