DK Digital CDB-600 Dokumentacja Pobierz pdf (Strona 35)

MSD Software Manual PRELIMINARY Release Chapter 9 Utility Functions.

9.2 Loudness measuring. Leq(m). 

Unlike the normal PPM-bargraphs the loudness meter measures the audio

level over time for the length of an audio clip or entire feature. It mimics the

varying sensitivity of the human ear at different frequencies. The displayed

measurement are readout in dB and this number could be interpreted as an

‘annoyance factor’. If the material occasionally contain a loud sound the

reading will result in a low reading, otherwise if the loud sounds are relatively

constant the result will be a higher reading.

Since the Leq(m) value is the sum of all channels over time (up to 8 channels),

it can with a traditional Leq(m) meter be very difficult to determine where a

signal level should be adjusted in order to reach the correct Leq(m) level if the

total Leq(m) value for an audio clip is to high or low. The 'Graphic Loudness

Meter' is capable of drawing a graph of the loudness session, making it easier

to see where levels could be adjusted in order to reach a correct Leq(m) level.

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