SPL - Channel One Mk3

Preamp output – the direct way to your goal
The preamp output captures the signal directly after the microphone amplifier. This signal can also be recorded on a separate track in the DAW, for example, for added safety. If it is found after a recording session that the singer was a little louder in the perfect take and is therefore pushing the compressor too hard, this incorrect setting can always be changed afterwards. The signal recorded for safety can then be played back in the Channel One Mk3 via the line input and processed there with Tube Saturation, Compressor or other tools.

How does the SPL automatic dynamic de-esser work?
The SPL De-Esser uses a unique technology to reduce sibilance in a mix or on vocal tracks.
Unlike conventional de-essers based on compression techniques, the SPL De-Esser uses the principle of phase cancellation. It uses filters that only process the reducible S-frequencies but do not interfere with the rest of the spectrum. The S-frequencies are detected automatically, the phase is reversed and mixed with the original signal. This method of operation has distinct advantages because it is unobtrusive and allows the original tonal quality to be preserved.

The reduction is achieved by comparing the average level with the individual S-sounds: the de-esser only works when the S-noise level exceeds the average level of the entire frequency spectrum. This means, for example, that original S-sounds with a certain S-part are not processed, while those that are too loud or do not contribute effectively to the sound are reduced – but the character of the voice remains unchanged.

Another special feature is the integrated Auto Threshold function, which makes the processing independent of the input level. Even when the speaker or singer does not maintain a constant distance from the microphone, the processing is maintained at the predefined S-reduction value. Conventional systems depend on the input level and work more intensively as the distance to the microphone decreases.

Thus, the SPL De-Esser does not have to be constantly monitored and readjusted to maintain constant processing - and it can always be applied before the compressor, since a change in position would not provide any advantage. Therefore, a corresponding switching function is not necessary. The result is a neutral, unobtrusive and extremely effective process.
Even at high S-reduction values, de-essing has a noticeable effect on the character and timbre of the voice.