Glossary: VFO | Sweetwater.com

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VFO: Abbreviation for Variable Frequency Oscillator: a somewhat generic term that can refer to all oscillators with variable frequency abilities. While the term can be used generically it tends to show up most commonly in radio transmission parlance. Radio frequency VFO's are often used superheterodyne AM and FM tuners to produce waveforms that combine with the transmitted carrier as part of the reception process (see WFTD Heterodyne for more background). In music synthesis VFO's are common, however, they tend to be referred to by more specific names that denote the method for changing the frequency, such as VCO (Voltage Controlled Oscillator) or DCO (Digitally Controlled Oscillator).

Vacuum Tube	Vako Orchestron	Valve
Vaporware	Variable Pattern Mic	Variable State Filter
Variac	Varispeed	Varitone
VAST	VBR	Voltage-controlled Amplifier (VCA)
VCA Group	VCF	VCO
VCR	VCXO	Velocity
Velocity Compression	Velocity Curve	Velocity Split
Veneer	Verse	VESA
VESA	VFO	VGA
Very High Frequency	Vibrato	Vibratone
Vibrato Tailpiece	Vibrola	Video Sync
Violin Bass	Virtual Analog Synthesizer	Virtual Dolby Digital
Virtual Dolby Surround	Virtual Instrument	VirtualMemory
Virtual Slave Reel	Virtual Track	VISE
VITC	Vivace	Virtual Network Computing
VOC	Vocal Booth	Vocoder
Voice	Voice-Stealing	Voice Coil
Voice Leading	Voice Over	Voicing
Volatile Memory	Volt	Volt-Ampere
Voltage	Voltage Clamping	Voltage-controlled Filter (VCF)
Voltage Depression	Voltage Regulator	Voltage Sag
Voltage Spike	Volume	Volute
Virtual Studio Technology	VST2	VST Instrument