Measuring the unwritten
signals in communication
Soul Spectrum builds measurement systems for the parts of communication that most models discard: the paralinguistic signal in speech (CASP), and semantic·logical drift in text and argument (SLDA).
Not what is said,
but how it is spoken
CASP ENGINE extracts non-verbal acoustic features—speech rate, pauses, rhythm, jitter, and energy variance—without relying on Speech-to-Text (STT). By establishing a personalized baseline, it measures deviations that indicate cognitive load, stress, or emotional shifts in real time.
Mapping semantic drift
in texts and arguments
While CASP measures speech, SLDA analyses text. Across multiple rounds of documents and disputes, it measures — at the sentence level — how claims move, how expression intensity shifts, how attribution changes, and where incompatible premises collide. It reports the amount, distribution, and amplitude of change, not its cause, truth, or intent.