Standardized Automotive Audio Testing Seminar
Standardized automotive audio testing ensures repeatable measurements of in-car audio. This allows comparisons, improves interpretation of results, and makes system-level specifications more meaningful, facilitating alignment between vehicle manufacturers (OEMs) and Tier 1 suppliers.
In this 40 minute seminar, Steve Temme presents the current status of standardized automotive audio measurements. He shares the work of the AES TC-AA committee (of which he is a member), outlining their recently-published white paper on automotive measurements. He discusses the test configuration – demonstrating with a real car – and explains the hardware setup, test signals, and measurement specifics for frequency response, impulsive distortion and Max SPL. He goes beyond the TC-AA recommended measurements to also demonstrate THD, IM distortion, and spectral uniformity and explains how they help to more fully characterize the performance of an in-car audio system.
Automotive measurement demonstrations include
System characterization
- System characterization
- Frequency response
- Seat-to-seat Spectral Uniformity
- THD
- Intermodulation distortion
- Overall Max SPL and at 10% THD
Vehicle integrity measurements
- Impulsive distortion
- Crest Factor
- Perceptual Rub & Buzz
- Time Transients
Presenter: Steve Temme
Duration: 40 Mins
Automotive Measurement Resources
This seminar was originally broadcast on December 17th 2024. The recording above does not include the live Q&A at the end for attendee confidentiality reasons. However, several links to additional resources were provided during the Q&A session, and these are provided below.
Testing Using the A2B interface: A short video.
TC-AA Test Sequences for use in SoundCheck: Pre-written test sequences to make measurements in line with the TC-AA recommendations using SoundCheck (free)
Active Road Noise Reduction Measurement: A short video demonstrating ANRR measurements in a car.
More about enhanced Perceptual Rub & Buzz (ePRB): Web page with more detailed information about the Perceptual Rub & Buzz algorithm used in this video.
More about Transient Distortion Detection (eLP): Web page with more detailed information about enhanced Loose Particles, a transient distortion detection algorithm used in this video.
Automotive Audio Measurements in SoundCheck: Main webpage on automotive audio measurements.
