DTS means Digital Theatre Systems
DTS is high quality digital multichannel sound which is used in many cinemas. The sound is true to nature, the amount of information per second is much higher than the older Dolby Digital. DTS is used both professionally and for the consumer (stored on DVD or CD). DTS is a noise reduction system by reducing frequencies that are not perceptible to humans (DTS takes away less than Dolby Digital). The first film with DTS was Jurassic Park from 1993.