The first version of BS.1770 relied on ambiguous speech detection, which can have unexpected consequences trying to control the level of commercials or programs of certain genres. The improved 1770-2 recommendation incorporates a clever relative gate, making the measurement well-defined and practical to use, also across genres.
It is now even relevant for controlling the level of promos and commercials. Further, the new version is completely open standard, because TC Electronic donated core technology to EBU, where it was refined by PLOUD; and now brought back into the revised ITU standard.
Now, TC Electronic updates its radar loudness meters in System 6000 MKII (v. 5.11), DB4 (v. 3.20), DB8 (v. 3.20), DB4 MKII (v. 3.20), DB8 MKII (v. 3.20), LM2 (v.1.11), TC TouchMonitor TM7 & TM9 (v. 1.14) and for ProTools HD (LM5D version 2) to comply with BS.1770-2.
Besides from BS.1770-2 measurement compatibility, these machines also have dedicated EBU R128, TR-B32 and ATSC A/85 metering presets. Additionally, smooth and BS.1770-2 compliant loudness correction is now available in DB4, DB8, DB4 MKII and DB8 MKII, while DB2 will get the capability this summer.
TC Electronic BS.1770-2 Compliant Loudness Meter Range