A wreath may be used as a headdress made from leaves, flowers and branches. It is typically worn in festive occasions and on holy days. Wreaths originally were made for use with pagan rituals in Europe, and were associated with the changing seasons and fertility.
To reverberate is defined as to continue to sound, such as in a series of echoes. 1  An example of to reverberate is when you hear the same sound continuing to echo.  An example of to reverberate is a repercussion, when one decision causes many different situations.
Reverberation time is usually stated as a decay time and is measured in seconds. There may or may not be any statement of the frequency band used in the measurement. Decay time is the time it takes the signal to diminish 60 dB below the original sound.