Digitally controlled active noise reduction with integrated speech communication

Digitally controlled active noise reduction with integrated speech communication

TNO Technische Menskunde
Steeneken, H.J.M.
Verhave, J.A.

2004

Active noise reduction is a successful addition to passive ear-defenders for improvement of the sound attenuation at low frequencies. Design and assessment methods are discussed, focused on subjective and objective attenuation measurements, stability, and high noise level applications. Active noise reduction systems are suitable for integration with an intercom. For this purpose the intelligibility in combination with environmental noise is evaluated. Development of a system includes the acoustical design, the (digital) feedback control, and the speech input facility. In order to achieve optimal performance a specific audio design is required. An example of such a development is discussed.

Noise reduction
Active noise reduction
Digital controlled feed back
Hearing protection
Speech communication
Acoustic signal processing
Acoustics
Amplifiers (electronic)
Feedback control
Mathematical models
Microphones
Noise abatement
Nonlinear systems
Active noise reduction (ANR)
Feedback loops
Frequency transfer
Hearing protection
Speech communication

http://resolver.tudelft.nl/uuid:16195b36-440d-4676-b83c-3559a6f1229b

13298

Archives of acoustics, 29 (29), 397-409

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