Manual
Table Of Contents
- Fig. 110: 2 π radiation
- Fig. 109: 4 π radiation
- Fig. 103: Absorption versus diffusion
- Fig. 117: A frequency (F) that has a wavelength of four times the distance to the rear wall is canceled because of the oppositely phased reflection.
- Fig. 116: An example of a comb filter effect created by combining two signals with the same amplitude and a one millisecond delay between them. Dips occur due to cancellation at 500 Hz, 1.5 kHz, 2.5 kHz etc., and the two signals’ levels double (+6 dB) at
- Fig. 20: Assigning Clarity X in TC Icon
- Fig. 24: Assigning Clarity X in TC Icon
- Fig. 34: Audio formats and Bass Management modes – overview
- Fig. 35: Audio formats and Bass Management modes – overview ctd.
- Fig. 80: Auto Logging – Log Select page, with meter M2 enabled for logging
- Fig. 81: Auto Logging – Log Setup page
- Fig. 12: Balanced to unbalanced – proper wiring
- Fig. 118: Basic bass management setup
- Fig. 33: Bass Management page, Bass Management set to Extract
- Fig. 39: Calibrating the right speaker in a 5.1 setup to EBU R128
- Fig. 11: Clarity X back panel connectors (shown with optional MADI ports)
- Fig. 62: Clarity X Dose Meter and Dose Reset button as seen in the right pane of the TC Icon Main View
- Fig. 61: Clarity X Dose Meter showing “Not Cal” for a Speaker Setup not declared as Ready
- Fig. 9: Clarity X front panel
- Fig. 10: Clarity X front panel indicators
- Fig. 8: Clarity X hardware options: With MADI (top) and without MADI (bottom)
- Fig. 79: Clarity X log file header
- Fig. 52: Clarity X Main View – input and output panes showing Page 1
- Fig. 53: Clarity X Main View – input and output panes showing Page 2
- Fig. 54: Clarity X Main View, left pane, page 1 showing the Radar Meter and Source overview, Stereo Deviation Meter and Center Ratio Meter
- Fig. 55: Clarity X Main View, left pane, page 2 showing Radar statistics, True Peak Meter and Source overview, Stereo Deviation Meter and Center Ratio Meter
- Fig. 56: Clarity X Main View, right pane, page 1 showing the current speaker set, the Dose Meter, the Speaker Set overview, and various status indicators
- Fig. 57: Clarity X Main View, right pane, page 2 showing the Dose Meter, the Reset Dose button, the Speaker Set selection buttons and various status indicators
- Fig. 68: Clarity X Remote Control
- Fig. 7: Clarity X signal flow diagram. For more information on a section, please click or tap the respective part of the diagram.
- Fig. 1: Clarity X software on the TC Electronic software download page
- Fig. 2: Clarity X software on the TC Electronic software download page
- Fig. 85: Clarity X software on the TC Electronic software download page
- Fig. 86: Clarity X software on the TC Electronic software download page
- Fig. 87: Clarity X software (.tca) in the OS X Finder
- Fig. 26: Clarity X Status page
- Fig. 18: Confirmation of Clarity X reboot
- Fig. 17: Confirmation of new Clarity X IP address
- Fig. 19: Connecting Clarity X to a computer via Ethernet
- Fig. 119: Correlated (left) and uncorrelated (right) signals
- Fig. 93: Device UI locked
- Fig. 67: Dose Meter – critical dose
- Fig. 64: Dose Meter in the green
- Fig. 66: Dose Meter in the red
- Fig. 65: Dose Meter over 99%
- Fig. 63: Dose Meter reset
- Fig. 70: Dynamic Range Tolerance (DRT) for consumers in different listening situations
- Fig. 58: Edit / Format page
- Fig. 69: Edit / Remote page
- Fig. 82: Edit – Setup – M1 page
- Fig. 5: Ejecting the TC Icon disk image
- Fig. 16: Entering a new Clarity X IP address
- Fig. 36: EQ page with Band 3 deactivated and Band 5 selected for editing
- Fig. 22: Fader label (two triangles) indicating Fine adjustment mode for the currently selected parameter (Delay)
- Fig. 37: Frame / Phones page
- Fig. 27: Frame / Routing page
- Fig. 40: Frame / Set 1 / Cal page
- Fig. 21: Icon symbol
- Fig. 46: Info display for M2 preset
- Fig. 30: I/O setup – Clock page
- Fig. 31: I/O Setup – MADI page
- Fig. 38: Level differences when mixing at different sound pressure levels
- Fig. 49: Library Bank page
- Fig. 48: Library Project Delete page
- Fig. 44: Library Studio Recall page
- Fig. 47: Library Studio Store page
- Fig. 75: LM8 Main page
- Fig. 73: LM8 Radar
- Fig. 74: LM8 Radar page
- Fig. 76: LM8 Setup page
- Fig. 77: LM8 Statistics page
- Fig. 78: Log page with two log files
- Fig. 45: M2 Preset Recall button with Info tag
- Fig. 50: Main Edit page
- Fig. 108: Maxima of standing waves
- Fig. 100: Membrane absorbers
- Fig. 4: Moving TC Icon to the OS X applications folder
- Fig. 15: Network identification page in TC Icon software
- Fig. 59: Noise Floor Zoom
- Fig. 60: Noise-induced hearing loss risks
- Fig. 98: One sound source and one receiver in a typical room. The sound impulse is reflected on many surfaces. The reflections are perceived as reverberation.
- Fig. 96: One sound source, one receiver and no room. Only the direct sound is received.
- Fig. 97: One sound source, one receiver, and one reflecting surface. The sound is received twice. In the control room, this is normally experienced as comb filtering – see later.
- Fig. 14: OS X Network preferences
- Fig. 6: OS X security warning about application from an unidentified developer
- Fig. 42: Overview of the Clarity X data structure
- Fig. 43: Overview of the Clarity X data structure in TC Icon
- Fig. 71: Peak level normalization
- Fig. 102: Porous absorbers
- Fig. 83: Preferences page
- Fig. 88: Reset to Defaults button on the Frame / System / Setup / Version page
- Fig. 89: Reset to Defaults confirmation dialog
- Fig. 101: Resonance absorbers
- Fig. 99: Reverberation time measured in a control room. From 250 Hz and above, the curve is nicely placed around 0.3 seconds. But for lower frequencies, the reverb time rises to 0.75 seconds, which is too much.
- Fig. 105: Room modes: Axial modes
- Fig. 107: Room modes: Radial modes
- Fig. 106: Room modes: Tangential modes
- Fig. 28: Routing an input channel to a Source Module channel
- Fig. 29: Routing a Speaker Set channel to a physical output channel
- Fig. 95: Setup – Color page
- Fig. 91: Setup – Devices page
- Fig. 90: Setup – Info page
- Fig. 25: Setup – No devices detected
- Fig. 92: Setup – Security page
- Fig. 94: Setup – UI page
- Fig. 41: Signals for the left and right speakers delayed by 2.4 ms to compensate for the center speaker being 80 cm closer to the listener
- Fig. 32: Speaker Set Configuration page for Speaker Setup 1
- Fig. 84: Studio Setup active – Speaker Sets enabled
- Fig. 72: Target loudness based on a consumer’s Dynamic Range Tolerance
- Fig. 3: TC Icon software app icon
- Fig. 23: TC Icon software – On-screen keyboard
- Fig. 104: The sound field is initially radiated exposing a radial wave front – but within a few reflections, the sound field has obtained a plane wave front.
- Fig. 51: Tone page
- Fig. 114: Two 1 kHz sinusoidal tones added. The summed level is doubled (+6 dB).
- Fig. 113: Two 500 Hz sinusoidal tones added. The second tone is delayed 1 millisecond, hence the sum is zero.
- Fig. 115: Two typical situations in which comb filtering occurs, either acoustically or electrically
- Fig. 13: Windows Internet control panel
- Fig. 112: π/2 radiation
- Fig. 111: π radiation
- Safety information
- About this manual
- Before you get started
- Unpacking and setup
- Software: TC Icon and Clarity X firmware
- Clarity X: An introduction
- Clarity X – Basic concepts and operation
- Clarity X status indicators and ports
- Setting up Clarity X
- Basic operation using TC Icon software
- Accessing Clarity X
- Obtaining Clarity X status information
- Setting up audio and syncing
- Speaker Set calibration
- The Library: Recalling, storing and deleting settings
- Signal Source and Speaker Set configuration
- Clarity X Main view – Meters and Operation
- Downmix and other processing functions
- Dose Metering
- Clarity X Remote Control
- M2 – The LM8 Meter
- M1 Meter configuration
- Preferences
- Clarity X firmware update and Device Reset
- TC Icon Setup
- Appendix 1: Links and additional information
- Appendix 2: Acoustics
- Technical specifications
M2 – The LM8 Meter
Clarity X software version 1.3.00 – Build 3275 – Reference manual (updated 2016-10-18) 129
LM8 – introduction
M1 vs. M2
ClarityX has two high-end LM8 Radar meters.
► The meters/meter set in the main monitoring
engine are called M1. They always reflect what
you are listening to.
► In addition to this, ClarityX offers a dedicated
metering engine with its own, independent
routing called M2. This second LM8 instance
will measure and display the channels you
have selected for metering at all times regard-
less of whether you’re listening to them or not.
For more information on viewing and editing
signal routings, see “Signal routing” on page
59.
For a signal flow overview, see “ClarityX signal
flow diagram” on page 26.
The parameters for M1 and M2 are very similar,
with some signal flow and user interface-related
differences.
The current chapter (“M2 – The LM8 Meter”)
explains the basic concepts behind TC’s Radar
Meter and all M2 parameters.
For specific information about configuring M1,
see “M1 Meter configuration” on page 149.
LM8 features
The LM8 Loudness Radar Meter algorithm
shows the user the essence of the “loudness
landscape” at a glance for a complete and in-
stant overview, including:
► Loudness History
► Momentary Loudness
► True-peak Level
► Program Loudness and
► Loudness Range
– all this in a single view.
LM8 also features a detailed 24/7 logging func-
tion that will generate a text file which you can
use to document adherence to a specific broad-
cast standard.
What is LM8?
LM8 represents a quantum leap away from sim-
ply measuring audio level to measuring per-
ceived loudness.
The old level method is responsible for unac-
ceptable level jumps in television, for music CDs
getting increasingly distorted, and for different
audio formats and program genres becoming in-
compatible: Pristine music tracks from the past
don’t coexist with new recordings, TV commer-
cials don’t fit drama, classical music or film and
broadcast don’t match. The most fundamental
audio issue of all – control of loudness – makes
millions of people adjust the volume control over
and over again, every day.
LM8 is part of a universal and ITU-standardized
loudness control concept, whereby audio may
easily and consistently be measured and con-
trolled at various stages of production and dis-
tribution.
LM8 works coherently together with other TC
products, or with third-party equipment adhering
to the same global standard. Follow the guide-
lines given to allow audio produced for different
purposes to be mixed – without low dynamic
range material (such as commercials or pop
CDs) always emerging as the loudest.