Past Meetings

2014-2015 Officers


Audio Engineering Society

Chicago Section

August 2015

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The next meeting of the Chicago Section of the Audio Engineering Society is:
7:30pm on Tuesday August 4, 2015

Meetings are FREE. Members and non-members are welcome.
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TOPIC: Advances in Testing of Speech and Audio in Cars

Dr.-Ing. Hans W. Gierlich
DATE: August 4, 2015
7:30pm; Dinner at 6:30pm (optional)

LOCATION: Shure Incorporated, 5800 W. Touhy Ave, Niles, IL 60714

DIRECTIONS: When arriving by car, approach from the east by heading west on Touhy, then turn right into the parking lot just east of the Shure building, which is on the corner of Touhy and Lehigh. DO NOT turn left into parking lot from Touhy heading east, as this is illegal and you may get a traffic ticket. Enter at the employee entrance on the east side of the building and register at the guard desk. A valid driver's license must be presented at the guard desk when registering.

DINNER: Dinner (optional but please RSVP) will begin at 6:30pm. Dinner reservation required - contact Treasurer Riva Oliveira at by Monday, August 3rd. Pizza and salad will be provided. Please let Riva know if you have a preference for no-cheese and/or vegetarian. Price is $10 for non-members and $8 for members and students.

About The Presentation

The vehicle radio systems moved from a radio to becoming the hub of all types of entertainment and communication services. In consequence a variety of components, systems and services need to be optimized, tested and qualified in order to provide quality according to the high customer expectation on the one hand side and to allow manufacturers and their suppliers to qualify their implementations based on objective criteria.

This presentation will introduce the general testing and system optimization approach and will mainly focus on new test methodologies:

  • New objective perceptual based models for speech communication quality focusing on speech quality in background noise and echo.

  • In car hands-free communications, two major problems exist: echo, produced by the strong acoustical coupling between loudspeaker and background noise picked up by the car’s hands-free microphone in conjunction with the driver’s speech signal. Two perceptual based methods allowing objectively predicting and optimizing speech quality are introduced.

  • New objective model to objectively evaluate radio reception performance

  • Based on a recent research project done with a major radio manufacturer, a new objective methodology has been developed based on subjective jury studies. This methodology can speed up the evaluation of radio reception by eliminating the skilled operator and increase repeatability of testing thanks to the objective methodology.

  • New testing procedures for In Car Communication (ICC) Systems

  • ICC systems reinforce communication between passengers in a vehicle using the existing speakers system and additional microphones located throughout the vehicle. But, with a new system comes new challenges. Latest, state of the art testing and optimization procedures for ICC will be introduced.

    About This Month's Speaker

    Dr.-Ing. H. W. Gierlich started his professional career in 1983 at the Institute for Communication Engineering at RWTH, Aachen. In 1988 he received a Ph. D. in electrical engineering. In 1989 he joined HEAD acoustics Inc. in Aachen as vice president. Since 1999 he is head of the HEAD acoustics telecom division. Since 2014 he is managing director at HEAD acoustics.

    He is mainly involved in acoustics, speech signal processing and its perceptual effects, QOS & QOE topics, measurement technology and speech transmission quality.

    He is active in ITU-T, ETSI, 3GPP, GCF, IEEE, TIA, CTIA, DKE and VDA and vice chair of the ETSI technical committee STQ and was chair of the ITU-T focus group CarCom. He is Rapporteur for various questions in ITU-T SG12.

    He is author of more than 150 scientific papers and holds five patents. He is member of ASA, IEEE, VDE and DEGA where he was chair of the “Speech Communication” committee.

    Upcoming Meetings

    Recap Writers Needed!
    Anyone interested in helping our section by writing a recap (like the ones under Past Meeting Recaps) following one of our meetings, please notify an officer. Recap writers will get a
    free AES coffee mug – plus their work will be published on the AES web site and in the Journal of the Audio Engineering Society! You can't beat press like that!

    Meeting Ideas / Openings for Presenters
    If you or someone you know is making strides in audio, or you have a meeting idea, please alert any one of the section officers. We are still organizing programs for this year's presentations and are looking for interesting topics.

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