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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 


Come and visit us at our booth 205 and get an insight of our latest products. 
To arrange meetings, please contact Jasmin.

Register for free for your Exhibits Plus badge:  (VIP Code: 142KLIPPEL)


Paper Session P02-04: Root Cause Analysis of Rocking Modes in Nonlinear Domain
Saturday, May 20th 2017, 9:00 - 12:30, Salon 2+3 Rome (Presenter: Andreas Schwock)
Rocking modes are caused by small imbalances in the distribution of stiffness, mass and force factor. A measurement technique to determine these root causes, using laser vibrometry, parameters identification and root causes analysis, has been presented in a previous paper. This paper focuses on the application of this technique to examine rocking modes in nonlinear domain. An incremental DC-offset is applied to the loudspeaker to examine changes of the root causes of the rocking throughout the working range of the loudspeaker.  

Paper Session P02-04: Active Vibration Control of Break-up Modes in Loudspeaker Diaphragms 
Saturday, May 20th 2017, 9:00 - 12:30, Salon 2+3 Rome (Presenter: William Cardenas)
One of the factors which contributes to the degradation of the sound quality of the loudspeakers are the breakup modes of the membrane since they cause complex directivity patterns, peaks and deeps in the frequency response. This paper presents an active vibration control simulation applied to a 2D Finite Element model of a loudspeaker loaded by a fluid domain to demonstrate an innovative alternative to reduce the amplitude of the breakup modes of loudspeaker diaphragms, improving substantially the mechanical and acoustical performance. The benefits of the controlled system are demonstrated in terms of the acceleration response of the cone and the acoustic directivity.

Paper Session P10-05: Evaluation of Audio Performance over Product Life 
Sunday, May 21st 2017, 9:00 - 12:30, Salon 2+3 Rome (Presenter: Wolfgang Klippel)
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. 

Tutorial - T11: Standard Measurement of Loudspeaker Systems and Components
Sunday, May 21st 2017, 14:30 - 16:30, Salon 4+5 London (Presenter: Wolfgang Klippel)
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 - T20: System Design using Adaptive Loudspeaker Control
Tuesday, May 23rd 2017, 9:00 - 10:30, Salon 4+5 London (Presenter: Gregor Höhne)
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. 









Saturday, 2017-05-20 11:48 Age: 8 Days