This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
In-Car Early Reflection Studies Using In-the-Ear Microphone Techniques
Annotation ability available
Sector:
Language:
English
Abstract
After prototyping numerous sound systems for automobiles, it is often frustrating for the design engineer to gather a number of listeners and each turns out to have their own perception of the system performance. Some people are sensitive to localization problems in the car yet are unaware of reflection induced frequency response problems. The converse holds true for other listeners that notice small anomalies in frequency but are oblivious to localization difficulties. A trained listener can often balance the frequency and imaging issues though by tilting their head or mentally biasing the acoustical data.
The reasons for these differences in listeners is often due to the pinna, which is the visible part of the outer ear. In-The-Ear™ microphones, recently developed by Etymotic Research [1], are placed in the ear canals of several listeners to measure these influences in hope of understanding why these contrasting opinions exist.
Authors
Citation
Breithaupt, T., "In-Car Early Reflection Studies Using In-the-Ear Microphone Techniques," SAE Technical Paper 910892, 1991, https://doi.org/10.4271/910892.Also In
References
- Etymotic Research 61 Martin lane, Elk Grove Village, IL
- Davis D. “Tech Topics” Synergetic Audio Concepts 16 1
- Griesinger D. “Binaural Techniques for Music Reproduction” Audio Engineering Society 8th International Conference 1990
- Hartman W. “Localization of a Source of Sound in a Room” Audio Engineering Society 8th International Conference 1990
- Barron M. “The Subjective Effects of First Reflections in Concert Halls: The Need for Lateral Reflections” J. Sound Vib. 15 1971
- Toole F. “Loudspeakers and Rooms for Stereophonic Reproduction” Audio Engineering Society 8th International Conference 1990
- Genuit K. Gierlich H. Bray W. “Development and Use of Binaural Recording Technique” Audio Engineering Society 89th Convention September 1990
- Clark D. “Stereo in Automobiles” Audio Engineering Society 8th International Conference 1990
- Breithaupt T. “Acoustical Measurements for Automotive Sound System Evaluation Using Time Delay Spectrometry” Society of Automotive Engineers 1989
- Toole F. Olive S. “The Detection of Reflections in Typical Rooms” J. Audio Engineering Society 37 July/August 1989