LFO (Low-Frequency Oscillation)

  What is LFO?   LFO or Low-frequency oscillation is an electronic frequency which is usually below 20 Hz or at the bottom of the audio range. So, the human ear cannot hear it. It creates a rhythmic pulse or sweep and is often used to modulate synthesizers,...

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...

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...