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AES Berlin 2017

AES Berlin 2017

General Information

Conference: Saturday, May 20th - Tuesday, May 23rd, 2017
Exhibits: Saturday, May 20th - Monday, May 22nd, 2017
Location: Maritim Hotel Berlin, Germany 


Tutorial: Standard measurement of loudspeaker systems and components

This tutorial reports the development of new IEC standards addressing conventional and modern measurement techniques applicable to all kinds of transducers, active and passive loudspeakers and other sound reproduction systems. The first standard proposal describes important acoustical measurements for evaluating the generated sound field and signal distortion based on black-box modeling. The second standard is dedicated to the measurement of electrical and mechanical state variables (e.g. displacement), the identification of lumped and distributed parameters (e.g. T/S) and long-term testing to assess power handling, thermal capabilities, product reliability and climate impact. The tutorial gives a deeper insight into loudspeaker modeling, which is the basis for modern measurement techniques, and shows the practical relevance of this knowledge for transducer and system design.

Tutorial: System design using adaptive loudspeaker control

Progressing miniaturization and portability introduce new challenges for loudspeaker design. However, demands like higher efficiency and reduced weight can be achieved by combining digital signal processing and optimized transducer design. The tutorial gives an introduction into nonlinear adaptive loudspeaker control and how it can be used to equalize, stabilize, linearize and actively protect transducers. This covers the physical background of nonlinear loudspeaker behavior and the resulting demands on a control algorithm with a strong focus on the practical implementation. The discussion includes resulting requirements for amplifier and transducer design, like power demands and advantages of dc-coupling, as well as techniques to evaluate the system performance. 

Specification of hardware components in audio systems design
The introduction of digital signal processing in active audio systems provides new ways to correct the transfer behavior, to compensate undesired signal distortion and to protect the transducer against thermal and mechanical overload. The transducer, amplifier and other hardware components are still the critical factor determining the performance, weight, size and cost of the final audio system. The specification of the optimal components based on meaningful characteristics which can be verified by measurement is the key for simplifying the communication between system integrator and supplier to generate the maximum benefit for the end-user. This paper presents a systematic methodology to specify the transducer and other hardware components based on international standards and illustrates this process on components used in automotive applications.

Evaluation of Audio Performance over Product Life
Most measurements are performed on audio products during the development of the first prototype and at the end of the production line. Physical measurements and perceptional evaluation in the target application (e.g. car interior) are also required to define the target performance, to finish successfully the development and to evaluate the reliability and robustness of the product under the influence of climate, aging and other external factors. This paper discusses evaluation techniques that are useful in the different phases of the product life cycle to generate a successful product that provides the maximum benefit to the end user. 


Come and visit us at our booth and get an insight of our latest products. 
To arrange meetings, please contact Jasmin.








Saturday, 2017-05-20 11:48 Age: -52 Days