ULTR∆SØUND is Marco Ribeiro, from Lisbon, Portugal.
This project was born in 2005 and from that time until now,
he has addicted to PsyTrance music: FullOn Night; DarkPsy; Forest; Psycore; Hi-Tech.
His experience doing mixes, makes the project almost unique.
ULTR∆SØUND is a cyclic sound pressure wave with a frequency greater than the upper limit of the human hearing range.
Ultrasound is thus not separated from “normal” (audible) sound based on differences in physical properties,
only the fact that humans cannot hear it,although this limit varies from person to person…