Cabin comfort – Interior noise

It can be an uncomfortable experience flying in a noisy aircraft fuselage for long periods. Therefore, improving the flying experience, despite minimal space increases and rising capacity requirements, can make a difference in gaining market share.

The Acoustic Test Suite from Brüel & Kjær incorporates specialized solutions that assist in the challenging tasks of measuring acoustic noise in aircraft cabins and determining noise reduction remedies:

• Safety: Ensure everyone onboard can understand safety messages by measuring Speech Transmission Index (STI) and RApid Speech Transmission Index (RASTI) values.
• Occupational health: Ensure the working environment for flight crew complies to legislative and industry standards
• Passenger comfort (commercial aircraft): Measure and reduce noise deriving from internal (passengers, air conditioning, lavatories, etc.) and external sources (engine, wind, propellers, etc.)
• Passenger comfort (business jets): Provide value-added noise-cancelling features, such as 3D noise reduction of engine noise
• Multimedia options: Test and validate the effectiveness of background noise reduction measures in built-in multimedia equipment

From simple noise dose meter measurements to measurements of complex sound fields using high-channel, distributed measurements, Brüel & Kjær’s Acoustic Test Suite can be used to experiment, develop, test and validate acoustic noise problems and solutions.

• Occupational Health
• Noise Source Identification

• Case Studies:  University of Southern California Testing Advanced Aerospace Materials
• A New DIRAC Measuring Speech Intelligibility
• Enhanced Acoustic Material Testing in a Tube