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| SPL De-Esser |
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SPL De-Esser
The SPL Auto-Dynamic De-Esser is a highly specialized yet simple-to-use audio tool for removing undesired sibilant frequencies in a musically appropriate way without compromising the timbre and natural character of the voice.
To solve this difficult problem, SPL has developed a new circuit design that combines ease of use with natural sound characteristics and the highest level of technical performance.
Conventional De-Essing
Traditional de-essers use compression techniques. In addition to the threshold parameter used to set the processing level, there is a frequency controller for setting the center frequency of the process (with bandwidths generally up to 4 kHz). Processing therefore compresses the entire selected range, notjust the sibilant or S sounds. This results in the familiar and undesired side-effects such as lisping and a nasal-sounding vocal.
SPL's De-Essing
SPL's Auto Dynamic De-Esser monitors the entire frequency spectrum and automatically detects the sibilant frequencies. The bandwidth is set so narrowly around the range of the sibilance that neighboring frequencies remain unaffected. This frequency band is mixed back into the main signal phase-inverted to cancel out the sibilance. The result is a sound-neutral, inconspicuous and extremely effective process. Even at high s-reduction values the de-essing has an egligible effect on the character and timbre of the voice.Auto-Threshold
Rounding our this outstanding concept is an automaticthreshold-adjusting function: Differences in the input levelcaused by the singer moving in relation to the microphone are automatically compensated, so that the selected reduction value remains constant. In traditional de-essers, the processing intensity drops off with increasing distance, and compressors placed after the de-esser for signal correction tend to respond incorrectly to the changed values.Male/Female
The SPL system doesn?t just look for sibilance in a wide ?general sibilance? region of the spectrum. Instead, the user simply sets a front-panel switch to Male or Female to adjust for the vocal characteristics of male or female voices.Features
Symmetrical XLR and jack plugs for the in- and outputs, internal power supply with toroidal transformer, GNDlift switch, relay hard bypass/power fail safety, voltage selector switch.
Specifications
Inputs and outputs:
Instrumentation amplifier, electronically balanced
(differential), transformerless
Nominal input level +6 dB
Input impedance =22 kOhm
Output impedance < 600 Ohm
Max. input level +24 dBu
Max. output level +22.4 dBu
Minimum load 600 Ohm
Relay hard bypass / power fail safety
Measured data
Frequency response 20 Hz-50 kHz
(50kHz= -3dB)
Common mode rejection > -80 dBu @1kHz
Total harmonic distortion 0.002% @ 1 kHz
Signal-to-noise ratio -93 dBu (CCIR 468-3)
Signal-to-noise ratio -98 dBu (A-weighted)
Power supply
Toroidal transformer 15 VA
Fuses (230/115 V) 315 mA/630 mA
GND lift switch, voltage selection switch 115 V / 230V
Dimensions
Standard EIA 19"/IHE 482 x 44 x 237mm
Weight 3.4 kg
Note: 0 dBu = 0.775 V
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Studio Economik UA Apollo NEWS! We are placing the 1rst order for UA Apollo right now, available end February. Limited quantity available on first shipment. Pre-orders available. Please contact us to get yours!
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