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DOLBY LM100-LTC
The Dolby LM100 Broadcast Loudness Meter is a tool for measuring the subjective loudness of dialogue within broadcast programming.
Differences in audio levels between programs, or between programs and commercials, are a major annoyance to TV viewers. However, although obvious to the viewer, these differences have proven difficult for broadcasters to measure with conventional methods and equipment. The Dolby® LM100 Broadcast Loudness Meter solves that problem through Dialogue Intelligence, a revolutionary technology developed specifically to measure the perceived loudness of dialogue. Research shows that most viewers adjust TV volume to normalize dialogue levels. By analyzing the input signal and measuring program loudness only during the presence of speech, Dialogue Intelligence objectively measures what viewers subjectively experience.
Core Measurement Algorithm (User Selectable)
ITU-R BS.1770-1
Leq(A)
Dialogue Intelligence Algorithm
Proprietary; patent pending
Audio Sampling Rates
32, 44.1, and 48 kHz
Measurement/Analysis System Log
480 events stored in internal nonvolatile RAM
Unlimited event storage and retrieval with use of LM100 software remote application on a PC
Power Requirements
90264 VAC, 5060 Hz, auto-sensing, 15 W maximum; designed to operate from a centrally switched power source
Dimensions and Weight
1-U rackmount: 44 × 483 × 375 mm
(1.75 × 19 × 14.75 inches)
Net: 2.5 kg (5.5 lb)
Environmental Conditions
Operating: 0°C50°C (32°F122°F), natural convection cooling, 0%98% relative humidity (noncondensing)
Nonoperating: 20°C to +70°C (4°F to 158°F)
Regulatory Notices
North America: This unit complies with the limits for a Class A digital device pursuant
to Part 15 of the FCC rules and Industry Canada ICES-003 Class A requirements. It is UL Listed for the US and Canada.
Europe: This unit complies with the requirements of Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC and carries the CE marking accordingly.
Warranty
One-year limited, parts and labor; see disclaimer. Specifications subject to change without notice.
Disclaimer of Warranties
Equipment manufactured by Dolby Laboratories is warranted against defects in materials and workmanship for a period of one year from the date of purchase. There are no other express and implied warranties and no warranty of merchantability or fitness for a particular purpose, or of noninfringement of third-party rights (including, but not limited to, copyright and patent rights).
Limitation of Liability
It is understood and agreed that Dolby Laboratories liability, whether in contract, in tort, under any warranty, in negligence, or otherwise shall not exceed the cost of repair or replacement of the defective components or accused infringing devices, and under no circumstances shall Dolby Laboratories be liable for incidental, special, direct, indirect, or consequential damages (including, but not limited to, damage to software or recorded audio or visual material), cost of defense, or loss of use, revenue, or profit, even if Dolby Laboratories or its agents have been advised, orally or in writing, of the possibility of such damages.
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