Sontia’s core SPT technique isn’t like traditional mass-market sound enhancement approaches that tend to use effects and gimmicks with unpleasing audible results. Instead, Sontia SPT firstly creates a unique, multi-dimensional profile of a sound product including a vast range of natural acoustic and psycho-acoustic characteristics. It then uses this profile to ensure that all sound reproduced by that sound product is near-perfect and natural with stable, linear phase. The results are remarkable and rarely heard in consumer products. In the listening environment, there is nothing to set up and no calibration required.

Conventional speakers suffer from a small optimal listening area (or ‘sweet spot’), possess poor sonic depth and produce sound that isn’t life-like. Sontia’s SPT Acoustic Imaging is a patented approach that successfully employs novel otoacoustic and ‘whole-body’ acoustic modelling techniques to produce sound that is natural and spacious with a wide listening area. This is not a ‘surround sound effect’ - it is the result of advanced investigation and analysis into sound spaces and the fundamental problems of producing natural, live sound from a limited number of a speakers.

Sontia SPT bass enhancement is multi-faceted. Firstly, linear phase correction increases available bass energy by removing the cancellation effects of out-of-phase sound waves. Sontia also uses an advanced, patented, organic convolution method that reproduces ‘lost’ bass harmonics, adapting to the actual sound passing through the system in real-time. Additionally, Sontia’s SPT LFX technique optimises bass for different volume settings, extending bass response at normal listening volumes. These approaches achieve astounding, deep, rich bass.

Conventional loudspeaker cross-overs suffer from a number of problems, including cancellation/phasing effects, poor frequency separation, poor phase/time matching, ringing, signal transient smearing, lobbing and beaming effects. Sontia’s SPT Cross-over addresses these problems, achieving 4–8 times better frequency separation and virtually eliminating destructive interference between drivers. Results are free of nearly all distortions commonly associated with conventional cross-over designs.

Sontia’s SPT Central Speaker technology delivers improved sound through the central speaker in sound/speaker bars and other ‘x.1’ systems. Unlike traditional subtraction techniques, Sontia SPT Central Speaker is able to accurately isolate sounds that are common to left and right channels using sophisticated algorithms that are a part of Sontia’s core patented SPT approach. This produces far better results that are natural sounding and clear.

Conventional speaker ‘correction’ simply alters the frequency response. Sontia’s SPT speaker optimisation employs patented algorithms to correct the phase, time and frequency response of the whole speaker product, including the enclosure, mounting position and destructive interference of sound waves between speaker drivers. Listeners agree that improvements are dramatic.

SPT Cabinet Resonance Control removes enclosure resonance and rattle that typically affects audio products at higher listening volumes.

It is well known that standard loudspeaker cones continue to move after the original sound signal has stopped, producing undesirable effects and distortions. Sontia’s SPT Active Damper algorithm is a patented solution that removes this effect allowing the speaker to faithfully track the audio signal.