Events

The Audio Product Education Institute (APEI) presents a webinar on modeling and measurement, focusing on exploring multiphysics simulation of the spatial response of speakers and microphones, and the different echo metrics that are used in voice quality testing. Speakers from COMSOL, the multiphysics and acoustics simulation software company, and HEAD acoustics, one of the world’s leading companies for integrated acoustic solutions as well as sound and vibration analysis, will share their experiences in two separate sessions, followed by time for questions.

 

Providing another learning opportunity on the use of simulation and measurement solutions for audio product design, this webinar will detail the ability to predict and understand the spatial response of microphones as well as the spatial response of loudspeakers, an increasingly important function when developing modern consumer audio products. Feedback and echo cancellation plays an important role in these products, and the ability to predict and reduce feedback in the transmission path from source to receiver is very important. In this session we will look at ways to model both the source and the receiver responses, using techniques such as reciprocity, as well as the full feedback path. Early assessment is important as DSP algorithms can then be developed and fine-tuned before any physical prototypes are made. 

 

In the presentation by the HEAD acoustics, attendees will learn about the different echo metrics that are used in Voice Quality testing as well as double talk analysis techniques. Topics to be covered include the definition of echo, how does delay affect echo, different metrics used to characterize echo, what is double talk, and why it’s important metric. Finally, the presentation will review the different analysis techniques used to quantify double talk.

 

This event will be presented by COMSOL. Following the opening remarks and introduction, the event will feature two presentations from Mads Herring Jensen (COMSOL) and Jacob Soendergaard (HEAD acoustics). In general, attendees will expand their understanding of the use of simulation in audio product design, addressing virtual prototyping, testing, measurement, multiphysics simulation, and optimization.