Early Decay Time. A measure of reverberation, EDT is the time that it takes for the reverberant energy in a room to decrease by 10 dB from its steady-state value. (See RT60.) Return to

Eastern Daylight Time

astern aylight ime, time zone in NYC, during daylight savings period. See EST.

Eau de Toilette

end delivery tonnage

ELECTRONIC DATA TRANSFER. Computer-generated art sent by the customer over the internet, via modem, or disk. Refer to the Art Transfer Form for acceptable transmission formats.

Education and Training Function