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Such an equalizer is called a 1/3-octave equalizer (spoken informally as "third-octave EQ") because the center frequencies of its filters are spaced one third of an octave apart, three filters to an octave. Equalizers with half as many filters per octave are common where less precise control is required—this design is called a 2/3-octave ...
Loudness compensation, or simply loudness, is a setting found on some hi-fi equipment that increases the level of the high and low frequencies. [1] This is intended to be used while listening at low-volume levels, to compensate for the fact that as the loudness of audio decreases, the ear's lower sensitivity to extreme high and low frequencies ...
At f 1 = 40 Hz, A 1 = 0.536 neper; at f 2 = 200 Hz, A 2 = 0.291 neper; at f 3 = 800 Hz, A 3 = 0.176 neper; at f 4 = 2000 Hz, A 4 = 0.100 neper. (These give a response which is the inverse of that of the original plot, as required for the equalizer, but with an arbitrary 0.1neper offset at the highest frequency.)
[11] [2] For example, the RIAA pre-emphasis in the popular Neumann SAB 74B equalizer applies a second-order roll off at 49.9 kHz, implemented by a Butterworth (maximally flat) active filter, plus an additional pole at 482 kHz. [2] This cannot be compensated for by a simple zero even if it were necessary, and in any case, other amplifiers will ...
A bridge-parallel amplifier topology is a hierarchical combination of the bridged and paralleled amplifier topologies, with at least four single-ended channels needed to produce one bridge-parallel channel. The two topologies complement each other in that the bridging allows for higher voltage output and the paralleling provides the current ...
Three audio power amplifiers Rear panel of a power amplifier with 2 × 700 Watt (4 Ohm) - very similar to the topmost device in the image above - showing typical connectors for professional use: From left, symmetrical XLR-sockets for signal input, alternatively audio jack sockets, loudspeaker terminals of type Speakon (center), alternatively ...
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