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Digital room correction may involve minimum phase algorithms, to maintain wavefront coherence over the intended frequency range.. The use of analog filters, such as equalizers, to normalize the frequency response of a playback system has a long history; however, analog filters are very limited in their ability to correct the distortion found in many rooms.
Equalizers can correct problems posed by a room's acoustics, as an auditorium will generally have an uneven frequency response especially due to standing waves and acoustic dampening. For instance, the frequency response of a room may be analyzed using a spectrum analyzer and a pink noise generator. Then a graphic equalizer can be easily ...
EBU R 128 is a recommendation for loudness normalisation and maximum level of audio signals. It is primarily followed during audio mixing of television and radio programmes and adopted by broadcasters to measure and control programme loudness. [1]
DEQX (Digital Equalization and Crossover) is an Australian-based company that develops digital loudspeaker and room correction technology. [1] [2] [3] DEQX processors correct loudspeaker distortion [4] and also apply room compensation as required. [5] DEQX equipment is used by Jeff Rowland Design Group in the USA [6] and Abbey Road Mastering ...
Practically every 20th century hi-fi preamplifier, integrated amplifier and receiver featured a built-in phono preamplifier with the RIAA characteristic. As more modern designs omitted the phonograph inputs, add-on phono preamplifiers with the RIAA equalization curve have become available.
An example of a typical high-end stereo preamplifier.. A preamplifier, also known as a preamp, is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker. [1]
An integrated amplifier (pre/main amp) is an electronic device containing an audio preamplifier and power amplifier in one unit, as opposed to separating the two. [ 1 ] [ 2 ] Most modern audio amplifiers are integrated and have several inputs for devices such as CD players , DVD players , and auxiliary sources.
Room modes are the collection of resonances that exist in a room when the room is excited by an acoustic source such as a loudspeaker. Most rooms have their fundamental resonances in the 20 Hz to 200 Hz region, each frequency being related to one or more of the room's dimensions or a divisor thereof. These resonances affect the low-frequency ...
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