Computer Controlled Noise Control Demonstration Unit

Computer Controlled Noise Control Demonstration Unit .

Computer Controlled Noise Control Demonstration Unit

A self-contained unit for the demonstration of the methods of noise and vibration control.  An integral 240v electric motor and gearbox together with a 12v fan unit provide two noise sources.  Variable control of both voltage sources allows speed control of both motors.

Each of two microphones may be connected to a DBA Filter and illuminated bar display to show relative loudness.

A rigid enclosure with acoustic lining may be placed over either noise source and attachments allow investigation of sound attenuation in ducts.