The Transpressor is the first processor that combines the two most important dynamic processing techniques: compression and level-independent treatment of transients. By blending these techniques in a single path, SPL aims to void the previous limitations of dynamic processing.
A transient can be defined as the first impulse of a waveform. What the Transient Designer does is shape the waveform according to the transient, and it only needs two controls to achieve that, either by amplifying or attenuating the attack and/or sustain. Among its most common uses are the sound shaping of percussion instruments, the attenuation or intensification of stringed instruments or vocal consonant transients, etc.
The compressor is based on our tried and true Twin Core Circuit with incredibly low distortion ratings. It includes all standard parameters like Threshold, Ratio, Attack, Release, and Make-Up gain. Moreover, the attack and release parameters can be adjusted automatically according to the input signal – sort of like a cruise control.
There is also a bandpass filter for the mids and two low pass filters for the lows that allow for a much more focused compression of specific frequency ranges or instruments. A side chain input allows for external control of the compressor while a Dry/Wet control determines the balance between the original and the processed signal.
The Transpressor is designed as a single channel unit but you can always couple two in order to do some stereo processing. Our intent to offer a flexible and powerful audio processing tool, based on the interaction between transient processing and compression, is made evident by the freedom to place the modules in any order in the signal path. That way you can compress attacks that have been heavily amplified by the Transient Designer more precisely or enhance the transients once they have been compressed.
Here's a video of the Transpressor in use. (Long intro so skip to 2:10)