AES New York 2015
Live Sound Track Event PD4
Thursday, October 29, 4:00 pm — 5:30 pm (Room 1A13)
Product Development: PD4 - Electrical and Mechanical Measurement of Sound System Equipment
Presenter:Wolfgang Klippel, Klippel GmbH - Dresden, Germany
Abstract:
This tutorial explains the physical background and practical motivation for a new measurement standard replacing the IEC 60268-5 applicable to all kinds of transducers, loudspeakers, and other sound reproduction systems. The focus are electrical and mechanical measurements (part B) complementing the acoustical measurements (part A) presented at the 137th AES convention in LA last year. Voltage and current measured at the electrical terminals provide not only the electrical input impedance but also meaningful parameters of linear, nonlinear, and thermal models describing the behavior of the transducer in the small and large signal domain. This standard addresses long-term testing to assess power handling, heating process, product reliability, and climate impact. New mechanical characteristics are derived from laser scanning techniques that are the basis for modal analysis of cone vibration and predicting the acoustical output.
