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TMC-1-MMP1 Follow Up at Eclair in Paris

TMC-1-MMP1 Follow Up at Eclair in Paris

Last week I visited Olivier Chouteau at Eclair in Paris, Olivier installed the first TMC-1-MMP1 system in a 7.1.4 studio. Daniel Gollety who makes the french translation of our manuals accompanied me on the visit - my French is not to good. Although configured as a 7.1.4 room one of the main reasons for using the TMC-1 is the ease in switching between Stereo, 5.1, 7.1 and 7.1.4.

TMC-1 and Yamaha MMP1

TMC-1 and Yamaha MMP1

This week I have been interfacing the TMC-1 with the Yamaha MMP1. We have been waiting for a MMP1 since it was announced last year, a loan unit finally arrived last week . Before starting we had to buy a I-Pad (we are Android users and our OSC software runs on both), this arrived two days ago since then I have been writing code.

Open Sound Control for the TMC-1

After publishing my initial idea's for a tablet interface to the TMC-1 using HTML, one of our users (James Chappell) suggested that I look at TouchOSC. After investigating OSC I have shelved the HTML interface and spent the past week developing an OSC interface.

The main advantage of using OSC is that users can design their own interfaces incorporating only the functions that they need, simplifying the user interface. Multiple pages allow for different applications. OSC applications are available for IOS and Android I have not found any for OSx or Windows.

You can see the two test interfaces I designed below The first includes input selection (user keys), metering, output level control and Level indication. It has been designed fot the TMC-1-Penta which can select between 8 inputs. I was impressed with the meter performance using an old Android tablet.  A nice touch is the battery status indicator

The second screen below is a cue source selection page complete with level controls and enable keys, This design may be used as a template and unused input and output controls deleted.

I have now finished two more test pages and I will be releasing this software for the TMC-1-Penta, -XMon and -AMon later this week - I also found how to label the tabs!

For the TMC-1-Penta only - Note :the latest Penta software has 32 Palette entries instead of 16.

The images above were taken from the design s/w, the Tablet and my phone look the same or better.

TMC-1 with tablet in my workshop - designs for the 3d printed cradle are also available.

Initially I intended  to use OSC-Midi commands but then decided to use direct OSC commands to control the TMC-1, if the controls are named correctly they will connect directly with the TMC-1. The user can define the label names but it is recommended that the TMC-1 updates User Key labels as they can be dependent on the interface (Penta, XMon, A-Mon) and can change when the s/w is updated. All controls are updated when the page is changed, the interface is bidirectional and updated in real time. The meter block uses a multi-fader graphic.

I am currently controlling the TMC-1 from a tablet and phone simultaneously.  The first command on either will update the display tothe current TMC-1 status. The [TMC-1] key is used to re-sync the display without change. To reduce Ethernet traffic I meters are only activated after an initial touch, as not all designs will include meters. Ping should be enabled with a 10 second delay to keep the meters running.

Push keys are made from three elements, the key, the label and the LED for status indication.

The cue routing keys are Toggle buttons that include on/off indication. The meters are made using a multi-fader. SPL indication is simply a Label. TouchOSC is available to download for $5, the design software is free and available for both Mac and PC.

I envisage other stand alone applications the firmware outside of the TMC-1, for example controlling Mic Amp's, GPIO, or Older Midi instruments from tablets or even mobile phones. Next week I will be releasing OSC enabled versions of the TMC-1-Penta/XMon/A-Mon as well as at least two templates.

For those who may wish to check out the beta test software a design package which includes firmware for the TMC-1, 3d designs for a tablet cradle and templates is available here-


TMC-1 Ashly ne8800 DSP Monitor Controller Interface

In response to customer requests we have now interfaced the TMC-1 to the Ashley ne8800 DSP processors.

Ashley ne8800

The Ashly ne8800 is an interesting unit, limited by having only 8 inputs and 8 outputs with summing, but unlike the NTP digital router it has DSP on both inputs and outputs - Summing, Equalization, Delay, Crossover and Dynamics. Supplied with Analog in/out as standard  AES/EBU and Dante are available as an option.

The Summing allows  the TMC-1 to implement down mixing, I have included the standard TMC-1 set of formats:

  • Mono Sum

  • Stereo only

  • Stereo Down Mix

  • 5.1 Down Mix from 7.1

  • 5.1 with side surround routed to both side and rear

  • 7.1

  • Atmos (7.1.4 on this implementation).

The first unit shipped with Ashly software is a PD-3 which combines a PD-1 with a TMC-1. The PD-1 is improved by adding a OLed display, ethernet port and the new PD-2 software.

PD-3 Film Monitor Remote

The limited number of inputs and outputs made designing systems with the ne8800 a challenge, however the TMC-1 is able to talk to multiple ne8800's increasing the possibilities.

The initial request was for a 7.1.4 film post production room which used two ne8800's. one for the 7.1 inputs and outputs, the other for the 4 overhead speakers, There were 4 unused inputs and outputs on the second ne8800, by routing the Left and Right outputs from the first ne8800 through the second ne8800 we were able to add a stereo input and a mini stereo output.

The initial design has a fixed configuration but if there are a requests for further systems I will write a system configuration program similar to the TMC-1-Penta2 program that will enable users to define inputs and outputs by their unit and channel number.

Using the AES/EBU and Dante inputs or adding a further ne8800 it is possible to select more inputs. To add Cue Inputs, Cue sends, AFL, talk back and listen back would require a third ne8800. It is possible to make a large ATMOS system from multiple ne8800's all controlled from a single TMC-1.

A-Mon Case Study: Boulevard des Productions, Strasbourg

Boulevard des Productions specialises in dialogue replacement (ADR or Doublage), CB Electronics was involved in the original studio a number of years ago

. W

hen the new studio was designed at the end of 2016 we were asked with Daniel Gollety and Jean-Robert Delicourt 

to make the new installation.

An existing building has been completely refurbished to provide a studio, control room, machine room, two editing suits and a large waiting room. All rooms are air conditioned especially the machine room. 

Rythmo (Band Projection) is standard in French ADR/

Doublage studios and a Mosaic electronic Rythmo system was chosen for the installation.  A Pyramix is used as the Digital Audio Workstation. Neuman digital microphones were selected for use in the studio.   

Boulevard des Productions owned an early SR-4 which was the only existing equipment used in the new studio, to bring it up to current specification this was fitted with a RomUpd kit and Tri-Level Sync Input. The SR-4 is used to synchronize the Pyramix with the Mosaic.  

The original CBServer software was replaced by CBServer3 (Left) which can read Mosaic files and be used to select loops by time and/or character as required. 

A-Mon was selected as the monitor controller for its comprehensive talkback, listen back and auto-mute. The new studio unlike the previous has a separate control room, Talkback and Listen back are both essential, the auto-mute makes the glass disappear. Currently the control room is stereo only but may be updated to 5.1 in the future, until then the Stereo down mix within A-Mon may be used when listening to 7.1 or 5.1 material. 

A plethora of screens left room for only one "Mini" loudspeaker, the stereo output of the A-Mon was resistively summed to feed the single speaker!

Both Engineer and Producer talkback are implemented; the A-Mon sums the two inputs which may then be routed to the studio loudspeakers, headphones and/or to the large waiting room. A notable difference in foreign language dubbing is that the talent waits for the engineer, instead of the engineers waiting for the talent!  

A feature of the TMC-1 is the use of the Play, stop and record tallies to control the Talkback, Listen back, Studio and/or Control room speakers. The TMC-1 Auto Mute may be controlled by LTC, MTC, Hui or as in this case by GP inputs connected to the Play and Record tallies from the SR-4 .The studio at BdP uses auto listen back and not auto talkback.  The two listen back microphones are enabled whenever the system stops and disabled by Play or Record


Listen back may also be controlled manually by the engineer. 

The two talkback microphones are enabled as required by the engineer or producer, again these are disabled by play and record tallies. The engineer uses the TMC-1 talkback microphone with an external switch to remove mechanical noise from the talkback switch in the TMC-1.  His talkback is normally only to the Headphones and Studio L/S.The producer is provided with two switches, one to the headphones and Studio L/S, the other to the waiting room. Listen Back when enabled may be latching, 

 In this case it was decided to disable the Talkback Latching, so that unfortunate comments are not be overheard by the talent.

Playback to the Studio Loudspeakers is controlled manually, but is muted by the record tally in case.

What did we learn whilst making this installation?

  1. We needed more gain on the Producer and listen back mic inputs

  2. We have now made a combined mic-amp and limiter for use with the Listen back and Producer microphones, removing the need for extra gain..

  3. We have now implemented Auto Resume Listen back as well as auto-resume talkback.

  4. To bring some known working cables and sound sources when checking the installation

  5. To offer a separate talkback switch box for the TMC-1

  6. Think more about how the Producer and Listen Back Mics connect to the system

Initial TMC-1 + A-Mon Configuration

Main Output – Stereo Speakers

Alt Output – Not Used,  configured as 5.1 Meter output

Mini Out – Mono (Multiple VDU screens there was only enough space for one speakers!)

Main input – Not Used

Alt input – Pyramix

Stereo input 1

Stereo Input 2

Stereo Input 3

Stereo Input 4

Cue Output 1 Studio L/S

Cue Output 2 Waiting Room

Cue Output 3 Headphones 1

Cue Output 4 Headphones 2

Cue input 1 Pyramix

Cue Input 2 Pyramix

Cue input 3 Pyramix

T/B 1 Input Engineer 

T/B 2 Input Producer

Listen Input 1 Studio Screen 1

Listen Input 2 Studio Voice Over booth

TMC-1, A-Mon and XPand Manual Updates

I have spent the last two days updating manuals and some web pages with Daniel Gollety our previous French Distributer and my friend of more than 30 years. This was exhausting for both of us but we are happy with the results - especially after updating every screen shot of the TMC-1.

It was important for me to have both an outside proof reader and someone for whom English is not their first language, in English as in most languages there are many different ways of saying the same thing - some are easier to understand than others. It is well known that I do not write the best manuals!

The English versions are now on the web, the French versions will be on the web next week.

Thank You Daniel!

TMC-1 Making time for Customer requests II

Whilst testing yesterday I discovered that a bug was added when implementing the previous customer requests - always a possibility. There is a trade off on having a product that responds to the needs of the market and a good stable product. I err on the side of making to many updates and in consequence to many bugs. However in my defence once a bug is found I respond as quickly as possible and fix it. Unfortunately often the bug is found after a period of time has passed and I have made a number of other updates to the software - I only ever have one version of the software the current version!- c'est la vie!

I have updated this s/w to provide an easier upgrade path, in earlier versions on the s/w the user keys were saved as numbers, this meant that I could only add user functions at the end of the list and not always group them logically. I have now updated this s/w so that the user keys are saved by there labels so that I can rearrange the user keys - especially useful as I like to keep the unique functions for each version (XMon, Penta, D-Mon and A-Mon) at the end.

Note: when we release new software it is packages with the matching version of the TMC-1-mac/win s/w, always update this otherwise the user key functions will not be correct!

A-Mon and XPand now in stock

It has taken longer than estimated, we were distracted by orders for existing products and we had not allowed for the time required to built the test jigs!

Here are the photos,

A-Mon Front

A-Mon Rear

XPand Front

XPand rear

The XPand is already installed and working in one studio and we will be demonstrating both the XPand and A-Mon in different studios over the next few weeks.

You can see/hear both the A-Mon and XPand at "Mix with the Pros 4",  Jigsaw 24, Golden Square on Wednesday the 15th June

TMC-1 Updates - Talkback Auto-Resume, SPL setting, SPL, Gain and Dolby Level

We recently supplied a TMC-1 to NRK who came back with one great quote and two suggestions for improvement.

"First, let me say I´m liking the TMC-1 more and more ! Great product,and it definitely fills a need in our small/mid-size rooms."
Olav Celius, NRK
The two suggestions for improvement were
1) The auto-talkback did not work in the same way as the Avid ICON
2) The NRK rooms are calibrated at 68 not 85 SPL how to use the CAL-A or CAL-B to display this?

Auto Resume Talkback
To replicate the ICON auto talkback I have added a new user key, "A/R T/B" (Auto-Resume TalkBack), when [A/R T/B] is enabled, if talkback is enabled then entering play will disable talkback and stop will resume talkback.

Room calibration
Both analog and digital monitoring systems are optimised for 0dB gain at the reference level. Whilst it is possible to reduce the gain by 17dB this would decrease the signal to noise ratio by the 17dB - not an ideal solution. I have added a new advanced menu to set the displayed SPL at 0dB gain in 2dB steps from 85 down to 63 SPL.

SPL, Gain and Dolby Level
I added a menu to allow the user to select the main display mode as SPL, Gain or Dolby level. Good for explaining how to calibrate the SPL Level and Great for when the producer requests a setting of Dolby 7 (85dB SPL).

TMC-1 Cue Send Display, AMon and Trinnov


This week I took a break from designing the AMon and looked at the Cue sends on the TMC-1.

Cue Dim

Originally when enabling talkback to a cue output I muted all other inputs. I have now added a menu (13) that allows the user to select between Mute Cues, Dim Cues and No Change. Currently the Dim is fixed at 10dB I will wait for feedback from users on this.

Cue Send Status 

I decided to indicate the cue send status of the meter screen, colour is used to indicate status as follows:-

  • Black: Cue output is enabled with No inputs selected (Cue 1 in image)

  • Green: Cue output is enabled with inputs selected (SLS in image)

  • Red: Cue output is Muted with inputs selected (Cue 2 in image)

  • Blue: Talkback is enabled and routed to this cue send (H/P in image)

Note: There are 5 cue sends on the XMon version


I am currently designing the AMon our new analog Monitor system, the AMon  or "Analogue Monitor Controller" will interface with the TMC-1. The AMon is designed for Stereo, 5.1 room and 7.1 rooms. Similar to the Avid XMon but with a number of improvements. The AMon is a 1U rack mount unit and the modular construction of the AMon will allow different versions for Stereo, 5.1, and 7.1. Here is the initial design specification (Click on image to expand!)

The AMon is designed for smaller Stereo and 5.1/7.1 rooms where the user has D2A converters and does not want to replace them with the DAD AX32.


On Monday I am visiting Trinnov in Paris to discuss the details of interfacing the TMC-1 to the DMon. I will post more information on the TMC-1-DMon later.

TMC-1 Penta 7.1.4 Case Study

The TMC1-Penta provides a framework to build your own monitor system, to design your

system you will need to specify the input/output data and the speaker groups as follows

1)  Map out the speakers

2)  Map out the Input and Output connections

Note the +10dB gain on the Dolby Return to remove any Level differences

between monitoring direct or through the RMU

3) Label modules in TMC1-Penta program and set Maximum channel count if not defined. As

an option you can add the Offset for each input

4) Label Speakers and assign channels

Note: The surround channels are checked in the corresponding Surround Column. This

allows the speakers to be assigned to the correct source when 7.1 or 5.1 are selected. To

use the LFE as a bass extension to the surround channels check the appropriate output in

the LFE column.

5) Assign Input name and channels for RMU 7.1.4 Outputs. Every surround speaker is

individually assigned

6) Assign Input name and channels for direct 5.1 and 7.1 outputs from Pro Tools,

Note. Only the main surround inputs are defined the 7.1 switch can the enable the extra surround speakers. Alternatively you can assign the extra surround speakers for 7.1 so that they are always used. 

7.1.4 using the TMC-1 and DAD-AX32 or Avid MTRX

This week I installed the TMC-1-Penta with a Dolby RMU, although there were one or two problems the system worked correctly. I will be modifying the TMC-1 software to provide more elegant solutions to the problems found. My to-do list has become bigger!

The last problem was interesting, as you can see from the signal flow diagram below there is a 10dB loss in the signal passing through the RMU to allow headroom for the speaker equaliser. This causes a problem when switching from 7.1.4 from the RMU to 7.1 or 5.1 from Protools.

7.1.4 and 7.1/5.1 Signal Flow (Click on image to enlarge)

10 dB of gain is added to the RMU return to make up for the 10dB attenuation through the RMU. The TMC-1 originally configured the Penta 720 with unity gain for 85 dB spl, to ensure that the speaker outputs do not clip a 10dB loss is inserted in the NTP Penta Output, This will also allow for internal summing and where digital outputs are used external equalisers.