The Hamasaki Square consists of four bi-directional microphones arranged in a square. It is designed for the pick-up of ambient sound.
The Hamasaki Square is designed for capturing the ambient / diffuse part of a surround sound recording. It is a four-mic square with 1.8 - 2 m (5.9 – 6.6 ft.) between the figure-of-eight microphones, which are routed to left, right, left surround and right surround at an appropriate level compared to the front array. The figure-of-eight microphones are pointed with their in-phase sensitive directions against the sides and with their nulls to the direct sound.