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Television Television

Loudness Controll


Audio Converter

From: Linear Acoustic

-LKFS metering for two programs (5.1+2) plus downmix
-ITU-R BS.1770-3 and EBU R128 compliant
-Dolby Digital (AC-3), Dolby Digital Plus, and Dolby E decoding standard

Accepting up to 8 channels of baseband or Dolby® Digital (AC-3), Dolby Digital Plus, or Dolby E encoded audio via AES or HD/SD-SDI I/O, LQ-1000 provides simultaneous LKFS loudness measurements for two independent programs (5.1+2) plus a downmix per ITU-R BS.1770-3 and EBU R128 standards.

Color-coded loudness values and bar graph meters with adjustable integration times are easily visible on the vibrant front-panel display along with a loudness histogram, True Peak readings, and dialnorm and coding metadata values.

Individual loudness logs for both the primary and secondary audio inputs covering the past 24 hours, 48 hours, 7 days, and a user-defined time period are available via the built-in HTTP server allowing stations to keep records of their loudness measurements.

A rear-panel VGA output allows information to be viewed on an external monitor or multi-viewer while full IP remote control support including metering displays is available via the provided NfRemote PC application. Many existing units can be upgraded to support remote connectivity – please contact Linear Acoustic for details. 

-Color Display

The bright LCD front panel display presents a wealth of important loudness information all at once, but remains easy to read at a glance. Critical loudness parameters like short, medium, and long term loudness, loudness history, current peak level, maximum peak level, and the loudness target are displayed.


-Loudness Speedometer™

The most important information – the current LKFS loudness value – is boldly displayed as a numeric value and is color-coded to represent the roughly 16dB-wide loudness “comfort zone” which is aligned around the adjustable target level. The visual is simple: blue is too quiet, green is just right, yellow is getting loud, and red is too loud.


-Loudness Logging

Loudness readings from the last 24 hours, 48 hours, 7 days, plus a user-defined period of time from all meters of both the 5.1 and 2-channel inputs plus the downmix are stored in the universal .csv format and can be retrieved via the built-in HTTP server.


-Large color-coded numeric display shows current loudness value
-Three additional bar-graph meters with adjustable integration times
-Histogram shows loudness history and trends
-24 hour, 48 hour, 7 day, and user-defined loudness logging for all meters and programs
-Built-in HTTP server for retrieval of loudness logs
-Front panel headphone output
-GPIO for external start/stop/reset and alarms
-Dual PSU