Download original image
One-third octave representation of the obtained reverberation times T20 by using a noise and impulse source including their standard deviation. The T20 values are shown here because the signal-to-noise ratio was too small, so that a 60 dB drop in the sound pressure level was not observed (the T20 values were determined when the decay curve first reaches the values 5 dB and 25 dB below the initial level and then extrapolated to a 60 dB decay to approximate the T60 values).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.