Cambridge Sound Management, LLC (CSM) is the developer of Qt Quiet Technology sound masking systems. CSM offers innovative, simple and intelligently designed solutions to the problems of privacy and acoustic distractions. Qt Quiet Technology combines exceptional audio performance, low impact installation, and affordability. Qt systems are extremely reliable and consume less than 24 watts of power per 72,000 square feet (6,689 m2) of space, are GreenSpec listed, and can contribute to LEED Certifications.

• See also:
• Masterformat 2004
• 27 30 00 - VOICE COMMUNICATIONS
• 27 41 00 - Audio-Video Systems
• 27 41 13 - Architecturally Integrated Audio-Video Equipment
• 27 41 16 - Integrated Audio-Video Systems and Equipment
• 27 41 19 - Portable Audio-Video Equipment
• 27 41 23 - Audio-Video Accessories