The custom digital signal processors, or DSP, on BenQ’s portable projectors were custom-tuned by the treVolo team to generate realistic, engaging audio in various situations and listening conditions. However, this doesn’t mean simple and rigid presets were used. BenQ audio experts turned to the field of psychoacoustics, which as the name implies refers to the psychological perception of audio and the physiological effects of sound. This has become a science of its own, with precise calculations to measure the impact of sound on different listeners based on distance from the speaker, relative angle, room conditions, and more. Broadly speaking, BenQ treVolo sound modes for portable speakers cover cinema, game, music, and sports, each one painstakingly developed with their own individual profile based on psychoacoustics principles and a lot of focus testing along the way.