Aphex EXCITER Instrukcja Obsługi Pobierz pdf (Strona 35)

Page 35Aphex Systems Ltd. Model 204

204

Aural Exciter and OPTICAL Big Bottom

Specifications

8.2 ARCHITECTURAL SPECIFICATIONS

Basic Description

A dual channel electronic device comprising an Aural Exciter

process to enhance and improve the intelligibility

and clarity of an audio system and a Big Bottom

process to separately enhance and improve the bass response

of an audio system.

Aural Exciter

The Aural Exciter process shall create the perception of increased presence, clarity and detail without creating

significant changes in the actual signal level. It shall do this by generating, in a sidechain, musically and dynami-

cally related harmonics according to a transient discriminating process, and frequency dependent phase shift.

The sidechain generated signal shall are then mixed into the output signal.

A Tune control shall be provided for each channel to select the frequency bandwidth of the effect by tuning a

high pass filter from approximately 600Hz to approximately 6kHz. A continuously adjustable Harmonics control

shall be provided for each channel to set, from MIN to MAX, the amount of harmonics being generated by the

Aural Exciter process. A Mix control shall be provided for each channel to control the amount of effect mixed

back into the program.

Big Bottom

The Big Bottom process shall provide a stronger, more powerful bass, increasing sustain and density without

substantially increasing the peak output. It shall do this by generating, in a sidechain, a dynamically compressed

low frequency sample of the input, with the addition of frequency dependent phase shift. The sidechain gener-

ated signal shall be mixed back with the original input signal to generate the enhanced audio output.

A Drive control shall be provided to properly adjust the dynamic compression depending upon the input signal

level. A green LED shall be provided to indicate when the optimum setting has been reached. A Mix control

shall be provided to adjust the amount of Big Bottom enhancement signal being added to the original signal.

A Tune control shall be provided to adjust the range of low audio frequencies that will be enhanced.

I/O

A Process In/Out Switch for each of the two channels activates and deactivates Aural Exciter and Big Bottom

processing simultaneously. The In/Out button shall be lighted to indicate when the processor is IN.

Input and output jacks shall be both XLR and standard 1/4” TRS phone jacks. Each channel shall be capable

of operating at either -10dBV or +4dBu. The inputs and outputs shall both be the active balanced type. Fre-

quency Response shall be 10Hz-38kHz, +/-0.5dB. Dynamic Range shall be 108dB. Hum and Noise shall be no

greater than -85dBu. THD shall be less than 0.01%.

Physical Properties

The device shall be packaged in an all metal chassis measuring 19” (482.23mm) wide, 1.75” (44.42mm) high,

with an overall depth of 8.25” (210mm). Depth behind the front panel shall be approximately 8” (203mm).

The device shall have a net weight of approximately 6lbs. (2.73kg) and is capable of mounting in a standard

electronic equipment rack.

Power

The unit shall have a self contained power supply operating from the ac line. Primary voltage, connectorization

and agency listings shall meet the governing standards where units are sold.

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