Abstract
A new MLS coherence function has been developed and tested in
various room acoustic measurements. The new measure, which takes
values between zero and unity just as the ordinary coherence, can
be used only if averaging over several periods of the MLS signal
is carried out. It indicates possible contamination by extraneous
noise in the same manner as the the ordinary coherence function
does in measurements with FFT analysers. It is also very sensitive
to disturbances such as reflections caused by moving surfaces
during the measurement. Very weak time-variance effects caused by
a small change in the temperature are also reflected in reduced
coherence.
Original language | English |
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Title of host publication | Proceedings of Sixth International Congress on Sound and Vibration |
Place of Publication | Lyngby |
Publisher | Department of Acoustic Technology, Technical University of Denmark |
Publication date | 1999 |
Pages | 2851-2858 |
Publication status | Published - 1999 |
Event | 6th International Congress on Sound and Vibration - Kgs. Lyngby, Denmark Duration: 5 Jul 1999 → 8 Jul 1999 Conference number: 6 |
Conference
Conference | 6th International Congress on Sound and Vibration |
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Number | 6 |
Country/Territory | Denmark |
City | Kgs. Lyngby |
Period | 05/07/1999 → 08/07/1999 |