The dbx model 902 De-Esser is designed for use in the F900A mainframe or the FS900 miniframe. The 902’s unique features make it possible to achieve the exact amount of de-essing desired regardless of variations in signal levels.
Log-Domain Processing: The 902 examines the differences in dB between the high frequency and full-bandwidth portions of the signal, allowing de-essing of signals which change in level by as much as 60 dB. Conventional de-essers require readjustment of their threshold control when a vocalist drops from singing voice to a whispering voice. By contrast, the 902 does not even have a threshold control to require adjustment.
User-Defined Crossover Frequency/HF Only or Broadband Operation: The two-pole, maximally flat filter design used by the 902 in separating high frequencies from low frequencies can be user adjusted over a range of 800 Hz to 8 kHz. This, in conjunction with the HF only mode, enables the 902 to be used for special, non-vocal applications such as removing “clicks” from a close-mic’d guitar.
RMS Level Detection: dbx patented RMS level detectors enable the 902 to sense level on the same basis as the human ear -- providing a natural and accurate response to audio waveforms.
