An experimental composer and sound artist from New York Tristan Perich likes to work with the smallest possible representation of digital sound. For the MOMA exhibition Soundings, he created Microtonal Wall (2011), in which he covered a 25-foot wall with 1,500 1-bit speakers that were tuned to different frequencies. Together they emanated a spectrum of sound, that was similar to white noise. A smaller, portable version, 1-Bit Music (2004-2005), is a kind of Walkman for low-fi 1-bit electronic music. He assembled it inside a CD case with a headphone jack on the side.