Sound Spectrum
Meerkat Laboratory
사운드 스펙트럼 분석기
PC Mehanik
오실로스코프
Guitar Tabs X
Spectrum TV
Charter/Spectrum
SPECTRUM_mobile
Caparol Farben Lacke Bautenschutz GmbH
Spectroid
Carl Reinke
데시벨 X - 사운드 미터 (dBA, dBC) 선량계
SkyPaw Co., Ltd
Room Acoustics Meter
Dr. Johann Gaus
Advanced Spectrum Analyzer PRO
Wojciech Czaplejewicz
Sound Spectrum Pro
Lindentree Software