Glossary: Horn | Sweetwater.com

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Horn: A number of definitions come to mind. In music there is the horn as a brass or wind instrument. The name comes from the early days when they were actually made from animal horns. In sound reproduction a horn is a device (again often shaped somewhat like an animal horn) for focusing and projecting the sound emanating from some audio transducer. Usually a horn is attached to a compression driver, and is used to couple the output of the driver efficiently to a larger area of coverage. But a horn may be used on a loudspeaker as well. And, in fact, some speaker cabinets are known as "horn loaded" because they set the speaker back in a cavity that is used to help control the dispersion and project the audio a great distance (long throw). Horns come in all shapes and sizes depending upon the exact duty they are to perform. Fundamental design philosophies have come and gone over the years. Radial horns have all but been replaced by constant directivity horns in many PA applications due to their greater control over dispersion across wide ranging frequencies. The science of horn design is ongoing and we'll probably continue to see improvements.

Haas Effect	Half-Track	Half Damper
Half Duplex	Half Normal	Half-Power Bandwidth
Half Space	Half Step	Hammer-On
Hammer Action	Handling Noise	Handshake
Hangover	Hangover	Hang Tag
Hard Bop	Hard Drive	Hard Reset
Hardtail	Hardware Bypass	Hardwired
Harmonic	Harmonic Distortion	Harmonizer ®
Harmony	Harp Guitar	HDCD - High Definition Compatible Disc
HD DVD	HDMI	Head
Head Crash	Header	Head Gap
Headphones	Headroom	Head Shadow
Head Stack	Headstock	Heartwood
Heat Sink	Heel	Helical Scan
Helicon	Helmholz Resonator	Hemiola
Hermode Tuning	Herringbone	Heterodyne
Heterophony	Hexadecimal	Hexaphonic Pickup
HFS (& HFS+)	Hi-MD	Hi-Z
Hierarchical Menu	High Pass Filter	High Sierra
HiLoTron	Hit	HockeyStick Headstock
Hollow-Glas	Hollowbody/Semi-Hollowbody	Holophonics
Homophony	Hoopy (or Hoopie)	Horn
Hornpipe	Horseshoe Pickup	Host
Host Based	Hot Swap	House Sync
House Sync	HTDM	HTML
Hub	Hub	HUI
Hum	Humanize	Humbucker
Humbucking	HX Pro	Hygrometer
Hyperacusis	Hypercardioid	Hyperlink
HyperText	Hysteresis	Hertz