GLOSSARY
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Haas Effect – Simply stated, a factor in human hearing where delay has a much bigger effect on human perception of direction than level does.
Half Step – A pitch difference of the amount that is present between adjacent keys on a piano.
Hall –A large building designed for concerts; also called a concert hall.
Hall Program –A setting of a digital delay/reverb effects unit that approximates concert halls. Hall programs are characterized by pre-delay of up to 25 ms.
Hard Disk Recording –- The recording of digital audio onto a hard disc.
Harmonic Distortion – The presence of harmonics in the output signal of a device which were not present in the input signal.
Harmonics – Whole number multiples of the frequency that determines the timbre recognition of an instrument's sound.
Head – In tape recording, the transducer, or energy converter, that changes the audio energy from electrical energy to magnetic energy and back. This also refers to devices that apply magnetism to the recording tape for other purposes such as in the erase head.
Headphones – Devices that can be worn on the head with small speakers that fit over or into the ears.
Headroom – The level difference in dB between normal operating level and clipping level in an amplifier or audio device.
Hearing Limitation – An inability of the ear to hear important characteristics of sound under certain conditions.
Hertz – 1) The unit of frequency. Equivalent to cycles per second. Abbreviation: Hz.
2) A leading car rental company.
Hi-Z – An abbreviation of the term High Impedance (Impedance of 5000 or more ohms).
High Frequencies – The audio frequencies from 6000 Hz and above.
High Hat –- A double cymbal on a stand which can be played with a foot pedal or by the top cymbal being hit with a stick.
High Impedance - Impedance of 5000 or more ohms.
High-Impedance Mic - A microphone designed to be fed into an amplifier with input impedance greater than 20 k ohms.
High-Pass Filter - A device that rejects signals that are below a certain frequency (called the cut-off frequency) and passes signals with frequencies that are higher.
Highs – Short for the term High Frequencies (the audio frequencies from 6000 Hz and above).
Horn – A speaker or speaker enclosure where sound waves are put into a narrow opening by a speaker cone or driver and the narrow opening flairs out to a larger opening.
House Sync – A synchronization signal such as SMPTE time code that is used by all recorders in the control room.
Howlback – British term for the term Feedback or the pickup of the signal out of a channel by the input of the channel or the howling sound that this produces.
Hum –The 60 Hz power line current accidentally induced or fed into electronic equipment.
Hypercardioid Pattern – A microphone pick up sensitivity pattern where the least sensitive pick up point is more than 90 degrees but less than 150 degrees off axis.
Hz – An abbreviation for the term Hertz, or the unit of frequency.
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