TC Electronic Radar Meter Bundle TDM - Manual (Page 20)

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18 / LM5/LM5D & AM6
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AM6 - TRAILER AND COMMERCIAL METER
Radar Leq(M) meter for Cinema Production
Pro audio is moving decisively away from the peak level based normalization method
that has caused so much havoc with trailers in movie theaters. The new and better
mantra is to combine frequency weighting with an energy-integrated measure of sound,
or equivalent continuous sound level, abbreviated Leq, and the level regulation of
commercials and trailers in movie theaters is based on a measure of annoyance, also
known as Leq(M).
TASA, MPAA, Dolby, DTS and others were involved in the definition of Leq(M), and
the principle has since been adopted in several countries. Today, movie trailers
and commercials are therefore generally under satisfactory control, though movies
themselves may sometimes be annoyingly loud.
Recognizing requests from many Pro Tools users producing audio for broadcast as well
as for cinema, an Leq(M) based radar meter is now available: The AM6. The radar
epitomizes an intuitive and efficient way of visualizing loudness or annoyance over
time, while the integrated Leq(M) number indicates the status of the entire trailer or
commercial with regard to regulatory limits.
RADAR PAGE