The 3.40 upgrade includes a new Advanced Loudness Correction processor, ALC6, and LKFS reading for our Radar Loudness Meter, LM6. The upgrade is free of charge to all users of DB4 and DB8 - original version as well as MKII.
In order to comply with legislation such as the CALM Act, as a quick fix, it's tempting for broadcasters to insert ‘sausage processing’ at the point of transmission. However, sausage processing is completely against the spirit and the purpose of new, global audio standards.
Like DB4 and DB8 users have come to expect, ALC6 therefore introduces several industry-first features. Processing takes place at a higher resolution than any other audio device or codec in the broadcast signal path, and its adaptive Stridency Reduction parameter brings overly loud content under tight control while leaving normal content completely untouched. Another unique parameter allows you to indicate whether a program is already normalized, not normalized or sometimes normalized. ALC6 is transparent in multiple senses of the word. Read more about all the five industry-first features here.
DB4 and DB8's integrated Radar Loudness Meter, LM6, includes two new functions: The meter may now show loudness units in ‘LKFS’ rather than ‘LUFS’, and you can set a Short-term loudness warning threshold. Real-time loudness warnings are visible in the remote application on a Mac, a PC or on the TC Icon hardware unit. Warnings are also relayed via the processor's extensive SNMP alert and logging system.
The 3.40 upgrade also introduces new factory presets conforming to the latest American, Brazilian, Chinese, European and Japanese standards, and ALC6 even reads presets made with its predecessor, the industry-standard ALC5.1. Therefore, you are sure to hit the ground running after the upgrade, and may try all of the new features one by one.