Virtual ALTI-EXPO 2020
KLIPPEL at the Virtual ALTI-EXPO
ALTI is pleased to offer a one day, online Virtual event on June 15, 2020.
This event is FREE to attend and all presentations will be recorded and will be available after Virtual ALTI-EXPO.
Dates: June 15th 2020
The On Demand resources are available!
Please see more information about the program for this virtual event here!
Our Paper Sessions
Paper Session 1: Linking Cost, Performance, End-User Satisfaction by Physical and Perceptual Assessment
by Wolfgang KLIPPEL on Monday, 15th June at 7:30 am (PDT) / at 4:30 pm (CEST)
This tutorial discusses the maximization of the end-user value, which determines the success in the market. The end-user value can be described more practically by the performance/cost ratio which considers physical, perceptual and other non-technical features and the cost structure of the product.
The discussion starts with the target performance as seen by the end-user, which is the basis for the development. The tutorial focuses on the assessment of the sound quality and discusses listening tests, auralization techniques and perceptual modeling to define the audibility threshold and the impact on the end-user value to generate acceptable tolerances. Those are required to generate meaningful specifications and PASS/FAIL limits. The manufacturing process should provide the defined performance at minimum production cost and with practical risk management (prevent field rejects). The discussion ends with new opportunities provided by digital signal processing and electrical control for in-situ monitoring and improving the performance, endurance and reliability of the product in the final application.
Paper Session 2: Towards Digital-Electro-Mechano-Acoustical Transducer Modules
by Wolfgang Klippel on Monday, 15th June at 8:00 am (PDT) / at 5:00 pm (CEST)
This tutorial discusses the new opportunities for creating all-in-one active transducer modules that combine adaptive, nonlinear control and other DSP algorithms, amplification and electro-acoustical conversion. Those modules only have a digital input for audio streaming and communication and use a simple, cost-effective power supply. They can be used in any enclosure with additional acoustical components (e.g. passive radiator) to realize headphones, conventional loudspeakers and modern arrays for 3D audio applications. The main objectives are to maximize the overall efficiency and minimize the cost by matching the components to each other. Current sensing at the terminals is the basis for the adaptive nonlinear control which generates a desired linear transfer behavior of the system over product life. The tutorial addresses the consequences for the practical system design and the benefits for the end-user.