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Products :: Test &
Measurement :: Noise & Vibration
Jury Testing and Listening Rooms (SQuare)
Jury Testing and dedicated Listening Rooms are key elements in any program to improve product sound quality.
It is important to gain an understanding of a product's sound from the customer's perspective. Jury tests involve gathering groups of people who represent the targeted customer group and presenting them with various product sounds with the objective of determining sound preferences for different design configurations, competitive products, and even simulated sounds.
Descriptive listening tests are also important for making design decisions, establishing benchmarks and targets, and validating improvements. Descriptive testing involves the use of expert listeners, typically NVH engineers and other design team members, to accurately identify and rate all the attributes present in a sound. Results from descriptive testing are used for design discussions and to help guide engineers in choosing analyses (ArtemiS) that best correlate with product sound attributes.
The SQuare Jury Testing system greatly automates the entire process of setting up, conducting, and organizing the results of listening tests. Test administrators use a wizard to choose the test design, play list, and data entry options to quickly set up tests. Tests can be delivered as a group or individually. Responses by the subjects can either be entered using keypads, PCs, or touch screen panels and all data are automatically collected and organized in a central SQL database. The test administrator can view test progress and results in real-time using the master PC.
Following are some of the screen shots showing the capabilities of the Square System:
Playlist Controller (Master Computer)
Juror's Screen
Summary Results
Listening Room Set-up
A properly set up Listening Room greatly enhances the realism and accuracy of the playback of product sounds. HEAD acoustics offers the HEADphone Playback Systems as the standard method for playing back recordings made with the Artificial Head Systems. However, greater realism can be achieved by including low frequency sound components through the use of specially designed subwoofers in combination with headphone playback. Another option, especially for larger groups or for groups that do not want to be encumbered with headphones is speaker-only playback. HEAD acoustics offers specially developed speaker and headphone playback systems that all can be controlled automatically with the SQuare software. Furthermore, HEAD acoustics provides services to equalize and calibrate your room to ensure the highest level of playback accuracy.
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