Pro tools remains one of the best suited for multichannel output software offering many treatment options 5.1 as plug-ins developed by many manufacturers (TC electronic, Dolby Laboratories, Minnetonka Audio, Neyrinck, Soundfield, Waves ...)
Among these tools fit in a fun way in our mixer 5.1, LM5D TC electronic is essential to put an insert in our master 5.1. It gives us the history of the loudness (LeqRLB), its instantaneous value and the average value ("center of gravity") over the life of rolling program (no window of 10 seconds measurement method "short term" used by the DP570). We also have access to some sort of standard deviation, "Consistency," which gives us information on the change in loudness over the duration of the program: we have a very constant loudness or highly variable? Ppm level measurement is accurate and complete what is lacking in pro tools, accurate measurement of levels. The LM5D LM5 that differs from these statistics. For a measure of the central channel carrying the dialogues, just cut the other bus from our master 5.1. The LM5D was recently presented at IBC, and has recently become available for download on the manufacturer's website.
Among the new recently developed plug-ins, we have the overcodes Dolby E audio Minnetonka RTAS format that enables us to decode a Dolby E stream; the tool is also available as a standalone application Minnetonka AudioTools AWE. We were able to test it on different sizes (5.1, LtRt) (2 + 2) (5.1). This tool gives us the metadata informed about the various programs. Simply insert the plug-in in a track to 7.1 and route the track to a 7.1 BUS that will monitor the 5.1 and LtRt via the input to respectively 5.1 and stereo formats.
The boundaries of the plug-in is unable to export at present metadata to the DP570 and the inability to decode Dolby E in the timeline, we are obliged to indicate in the file browser Dolby E wav interlaced (sync is done early in the session or the TC if the TC is embedded in the Dolby E). A settings page brings up the port that would transport the metadata externally on the DP570 but for now is not operational. We can reverse the order of bus, in the settings page, to work with different standards smpte, movie ...
The LtRt from Dolby E itself can be decoded by another tool developed by Minnetonka Audio SurCode Dolby Pro Logic 2 This plug-in gives access to various parameters (movie or music, panorama mode ...) Pro Logic decoder 2 and it can encode in LtRt with a limiter and a gain for LR LSRS C and LFE.
It is also possible to encode and decode a Dolby Surround in pro tools using the plug-in TDM format developed by Dolby, Dolby Surround Tools. It encodes a LtRt from a LCRS Dolby Surround and Pro Logic decoding in one.
In the family of plug-ins for encoding in pro tools, we have the audio of SoundCode Neyrinck. The SoundCode Dolby Digital is used to encode and decode Dolby Digital.
We need to educate metadata (dialog level, downmix, DRC ...) measured at present by our DP570. The plug-in requires the same settings for the DRC Line Mode and RF mode oddly. The decoder can decode the stream dolby digital wav exported directly in the timeline of Pro Tools RTAS, he just have to import our stereo file into a stereo track and put the plug-in insert. This method can also be used to decode a Dolby Digital stream from a DVD player. In the window of the decoder, we can simulate the stereo and mono downmix however the DRC modes do not seem completely controlled. We have not been able to listen without DRC (?). This is a very good tool to encode Dolby Digital. The tool is also for DTS, DTS SoundCode his name.
There are also stand-alone applications in Minnetonka Audio SurCode, encoders that feature Dolby Digital, Dolby Surround, and DTS and qu'encoder for audio DVD (Disc Welder).
Another tool, the SoundCode for Broadcast is also very useful, developed by Neyrinck Audio. It helps prepare the encoding Dolby E or Dolby Digital for DP600 as files. We inform our metadata for both 5.1 and LtRt programs and can export all audio and Dolby metadata as a wav file compatible with the DP600. The SoundCode player allows us to import our Dolby E file from the DP600 and integrate it into pro tools.
Another very interesting feature of SoundCode for Broadcast, is the ability to export and import them into pro tools for RF64 files. We can export multichannel interleaved files 6 tracks for now well over 2 GB for long-term programs size.
Dolby developed the soft version of LM100, Dolby Media Meter. This measurement software is available as a standalone application for Mac / PC or to pro tools RTAS / AudioSuite or Minnetonka AudioTools AWE. This plug-in allows us to measure the loudness with Dialogue Intelligence technology to automatically detect passages with dialogue. The measurement can be performed on the audio formats Dolby Digital, Dolby Digital Plus, Dolby True HD, Dolby E and PCM.
We still have to wait for the Dolby E encoder Minnetonka home audio (before the end of the year?) With the equivalent of DP570 in soft to simulate the metadata in pro tools, we can always dream!
The documents in this article are from: Dolby Laboratories, Neyrinck, Minnetonka Audio, TC electronic, Digidesign.