



Because of the level-independent processing inherent in Differential Envelope Technology (DET), manual threshold adjustments are not required.

The SPL Transient Designer 4 Dynamics Processor uses envelope followers to track the curve of the natural signal so that optimum results are guaranteed regardless of the input signal's dynamics. This results in natural sounding signal processing and fast operation. All necessary time constants (Attack, Decay and Release) are automated and optimised adaptively in a musical manner according to the characteristics of the input signal. Attack can be amplified or attenuated by up to 15dB while Sustain can be amplified or attenuated by up to 24dB, enabling weak drum sounds to be made much more percussive and powerful, or for over-percussive transients to be softened. The degree of dynamic processing required to do this couldn't be duplicated even using a chain of several conventional compressors, yet only two controls per channel are required to allow the user to completely reshape the attack and sustain characteristics of a sound. SPL's Differential Envelope Technology is the first analog solution for level-independent shaping of envelopes allowing transients to be accelerated or slowed down and sustain prolonged or shortened. The Transient Designer's automation is highly developed, so that while the processing going on inside the box may be very complex, the user has to deal with just a few intuitive controls. The SPL Transient Designer 4 Dynamics Processor provides a revolutionary concept for dynamic processing rendering controls such as Threshold, Ratio and Gain superfluous. Long has it stood as the standard for transient shaping, making it an invaluable tool for engineers around the world. The SPL Transient Designer 4 Dynamics Processor is a legendary piece of gear in it's own right.
