Loudness in Radio Broadcasting: TouchMonitor TMR7
4-Channel Metering Solution for Broadcast Environments
Loudness, true peak, PPM, vectorscope, moving-coil instruments, RTA, and correlation: The TMR7 TouchMonitor 4-channel solution featuring 7“ touchscreen and the unique TouchMonitor operating concept integrates all metering options required in radio broadcasting to a solution made to measure. Two AES3 digital inputs allow for parallel monitoring of the on-air signal and a PFL source.
The hardware and software of the TMR7 TouchMonitor are perfectly adjusted to radio-broadcast requirements. The technological basis of the new unit is the TM7 TouchMonitor with its flexible modular configuration. Available as desktop, fitted, or OEM unit, the TM7 covers all applications in professional audio metering.
Thanks to its versatile interfaces, the TMR7 makes integration into any studio environment a breeze. The four audio inputs provided by the two AES3 XLR ports are flexibly configurable for mono, stereo, or multichannel sources, providing separate instruments for each source. Plus, the GPIO interface for overall control, the Ethernet port, and the VGA output for external display units offer even more functionality.
Simple but Flexible
The intuitive operating concept of the TouchMonitor range offers maximum flexibility. Freely scalable instruments can be moved to any position on the graphical surface, allowing you to personalize the entire screen area. Views, scaling, and metering standards are separately definable for each signal source. In addition, the convenient on-screen help function supports you during the setup whenever needed.
Update 6-01 expands basic software and instruments
In Firmware version 6-01, the RTA provides a 1/12-octave mode, Cinema Loudness standards (LEQ(M), TASA, SAWA) have been implemented, and the Audio Vectorscope instrument allows up to 4 instances. The output routing can individually be adjusted for each preset, all presets can be exported or imported at the same time. Further details can be found in the Release Notes (included in the update package), or in the data sheet.
For existing units the firmware is available for download. See the Audio Monitors/TouchMonitor TMR7 section of members area (Manuals & Software).
- Easy and fast touch screen control with comfortable onscreen help
- Highly flexible screen layout options with scalable instrument
- Powerful DSP platform for parallel display of multiple instruments
- 2 AES3 audio inputs and 2 outputs via XLR (4 channels)
- Ethernet/LAN, USB, VGA and GPIO ports
- 7" touch screen 16 : 9 TFT
- Fully scalable, modular software approach for flexible configuration and easy on-site upgrades
- Standard Software (4-ch. PPM, TruePeak meter, audio vectorscope, spot correlator, global keyboard, gain reduction)
- Table-top unit or OEM version
- Other software modules available as options
Table-top unit in a sturdy table-top frame with movable table-stand
(approx. 198 x 138.5  x 46  mm, W x H x D [with table-stand]) and power supply
OEM panel-mount version (approx. 188 x 109 x 45 mm, W x H x D), w/o power supply,
for mounting into front panels, e. g. mixing consoles
each consisting of:
- Standard Hardware
Easy-to-use graphical interface, 7" high-grade touch screen (16 : 9 TFT), connectors for Ethernet, VGA, 2 x USB 2.0, GPIO, and 24 V DC
- Mounted 4-channel audio interface as described below (I/O Configuration)
- Standard Software
Stereo and 4-channel PPM and True Peak with digital scales (0 to -60 dB, +3 to-60 dB TruePeak, quasi-DIN, quasi-Nordic, quasi-British IIa and IIb), peak hold, audio vectorscope, phase meter (correlator), a global keyboard, and gain reduction. Other software modules available as Options.
I/O Configuration (Audio Interface)
4 digital inputs (2 x AES3 In, XLR-F)
4 digital outputs (2 x AES3 Out, XLR-M)
With the mounting adapters available as additional hardware options, the TMR7 units can be adapted to different environments such like standard 19“ sub-racks or standard 19“ rack-mount cabinets for video racks.
- TM7-MA3U (3U mounting adapter for TMR7OEM)
Mounting kit including a 19“/3U/42HP rackmount panel (half-19“/3U) and fastening material for mounting TMR7OEM into standard 19“ sub-racks.
- TM7-MAVID (VID mounting adapter for TMR7OEM)
Mounting kit including a half-19“/3U plug-in panel and fastening material for mounting TMR7OEM into standard 19“ rack-mount cabinets for video racks.
- TM7-MADT (Table-top mounting adapter for TMR7OEM)
Mounting kit including a table-top frame, robust swivel-mounted table-stand, housing cover, and mounting material for remodelling TMR7OEM to a table-top unit.
- SW20002: Loudness and SPL Display
This module expands the basic 4-channel PPM with Loudness measuring functions as described in current guidelines (EBU R128, ITU-R BS.1770-3/1771-1, ATSC A/85, ARIB, OP-59, AGCOM, CALM, LEQ(M), TASA, SAWA), and the LRA instrument for the graphical display of the Loudness Range. A customer-specific mode allows the user to modify parameters. In addition the module provides the SPL display mode with various weighting filters and integration times as well as reference level adjust to calculate an SPL value from an electrical signal.
- SW20003: RTA - Real Time Analyzer
This module provides in 31-octave, 61-octave, or 1/12-octave mode a spectral distribution display for single channels, channel pairs or groups plus HP HF band.
- SW20006: RTW Premium PPM
This module expands the Stereo and 4-channel PPM (standard software) with additional scales (Zoom, SMPTE, NHK, ARD+9, et al.), additional display modes (segment, classic), and PPM/VU moving coil instruments with different scales and functions. It also provides up to four 2-channel Audio Vectorscope and a separate phase meter.
- SW20008: Timecode Reader
--- Precondition: Software module SW20002 is already installed! ---
This module provides the Timecode function as a separate mode generating an individual audio group providing the Timecode Reader instrument. It is used to decode and to display a LTC timecode using one of the selectable audio inputs. The module also includes the Loud. Recal. instrument for the control of a loudness measurement by a timecode either with recalcualtion or without.
- SW20014: Logging Data Server
--- Precondition: Software module SW20002 is already installed! ---
This module allows to collect data of Loudness and TruePeak measurements and either to store them on a USB flash drive or to send them via IP connection to the LQL - Loudness Quality Logger PC software for analyzing (available free of charge at PC Software/LQL - Loudness Quality Logger section to registered users). At Audio Monitors/TouchMonitor TMR7 - Manuals section of members area (Manuals & Software) you may find a tutorial.
The module also includes the Loudness Chart instrument for displaying and analyzing the course of a loudness measurement directly on TMR7's display.
Every device comes with a comprehensive basic software package including all relevant measuring tools and instruments for the immediate use in many applications. For specific demands, the feature set can be expanded with software modules (licences).
Digital 2 x 2-channel Stereo and 4-channel PPM and TruePeak meter for up to four channels with analog and digital scales, Peak Hold, Peak Memory, Over indicator, numerical display. Additional control keys for positioning on the display. Loudness bargraphs switchable with SW20002.
Stereo Correlator instrument for displaying the phase relationship between the two channels of a stereo signal for the evaluation of mono compatibility. Additional control keys for positioning on the display.
VSC - Vectorscope
2-channel Audio Vectorscope for displaying the phase relationship between the two channels of a channel pair (Lissajous display). Additional control keys for positioning on the display.
AES Status monitor for displaying various parameters of AES3 digital audio signals in plain text. Additional control keys for positioning on the display.
Instrument for the display of external gain reduction data streamed by dynamic processors used in audio equipment and fed to the TouchMonitor via its Network interface and TCP/IP, for example the compressor activity of a mixing desk channel. Multi-channel mode available with SW20001.
Global Keyboard with definable on-screen keys for simultaneous control of defined functions in multiple instruments, and for preset recall. It also allows external control vial GP IO interface.
Software Licence SW20002 Loudness and SPL Display
Loudness Sum bargraph instrument for the display of the summed Loudness values M, S, and/or I of a Loudness measurement acc. to EBU R128, ITU BS.1770-3/1771-1, ARIB, ATSC A/85, OP-59, AGCOM, CALM Act, LEQ(M), TASA, SAWA, or specified by customer. SPL meter. Additional control keys for positioning on the display.
Loudness Num instrument for the numerical display of all relevant values of a loudness measurement: M, S, I, LRA, TPmax, Mmax, Smax, Itime. Additional control keys for positioning on the display.
Loudness Range instrument with MagicLRA mode for a graphical representation of Loudness variances. Adjustable ranges with different colors. Additional control keys for positioning on the display.
Software Licence SW20003 RTA - Real Time Analyzer
Real Time Spectrum Analyzer instrument with adjustable weighting filters for displaying the spectral content of the input channels using 31 (1/3-octave), 61 (1/6-octave), or 120 (1/12-octave) filter bands. Highpass filter for High Band (> 20 kHz). Additional control keys for positioning on the display.
Software Licence SW20006 RTW Premium PPM
Expansion of the PPM and TruePeak meter with additonal scales (Zoom, SMPTE, NHK, ARD+9, et. al.) and display modes (segment, classic). Additional control keys for positioning on the display.
2-channel stereo needle instruments with PPM (British) and VU display. With SW20002, also Loudness display and combined PPM and Loudness display (BBC mode) available. Additional control keys for positioning on the display.
VSC - Vectorscope
Additional 2-channel Audio Vectorscopes for displaying the phase relationship between the two channels of a channel pair (Lissajous display). Allows the use of four instances. Additional control keys for positioning on the display.
Software Licence SW20008 Timecode Reader
--- requires SW20002 ---
Decoding and display of LTC timecode using one of the selectable audio inputs.
Instrument for the control of a loudness measurement by a timecode either with program loudness recalcualtion or without. Additional control keys for positioning on the display.
Software Licence SW20014 Logging Data Server
--- requires SW20002 ---
Instrument for data collection of Loudness and TruePeak measurements and for storing them on a USB memory stick or sending them via IP connection to the LQL - Loudness Quality Logger PC software for analyzing. Additional control keys for positioning on the display.
Graphical display and analysis of the courses over time of selectable values of a loudness measurement. Additional control keys for positioning on the display.
Wide range 100 - 240 V AC/24 V DC 2.71 A, table-top power supply with corresponding power cable for different power supply systems
Instruments can be scaled, randomly positioned and combined.
This example shows a possible arrangement for radio broadcasting: For example for monitoring the on-air signal, the Loudness Sum instrument (M, S values) is placed on the left, with the corresponding PPM and the Loudness Range instrument in "MagicLRA" mode right beside and the numerical display of the I loudness value below, followed by the Audio Vectorscope in the middle with the corresponding phase meter. For parallel monitoring of a PFL source, a combined Loudness Meter and PPM for other signal sources is placed on the right.
With Loudness licence activated (see Options) Loudness measurements acc. to the current standards like EBU R128, ITU-R BS.1770-3/1771-1, ATSC A/85, ARIB, OP-59, AGCOM, CALM, and SPL measurements can be made. The different groups on the screenshot show some examples. Additional the LRA instrument for the graphical display of the Loudness Range is available.
With RTA licence activated (see Options) the Real Time Analyzer displays the frequency spectrum of the selected input channels.
With Premium PPM licence activated (see Options) additional scales and instruments like PPM/VU moving coils are available. The example shows on the left the ARD+9 scale (red marker), right beside a VU moving coil instrument in vertical orientation (yellow marker), in the middle a PPM moving coil instrument with vertical arrangement of the stereo and M/S displays (green marker) and on the right (blue marker) and below (orange marker) PPMs displayed in classical mode to simulate the look of RTW's classical peakmeters with gas-plasma displays.
This example shows a combination of the "Loud. Recal." instrument (loudness recalculation) of the Timecode Reader licence together with the Loudness Chart instrument of the Logging Data Server licence. This allows loudness measurements controlled by a timecode with recalculation and the display of the course of its measured values (TP, M, S, I) for analyzing.