Manual
Table Of Contents
- Introduction
- Supported Codecs and Formats
- The Sonnox Fraunhofer Pro-Codec
- Additional Information on Workflows
- Lossless Codecs (mp3-HD and HD-AAC)
- Description of Controls
- Presets and Project/Session Data Handling
- Preset Manager Toolbar
- Pro-Codec Signal and Control Flow Diagram
- Specifications
- Copyright and Acknowledgements
- Manual Revision History
- Platform Specific Supplement
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Offline encoding has four headroom recording options:
• Do not trim.
• Use online trim values.
• For each codec, prevent decoded levels from clipping by pre-processing the track.
• For each codec, normalise the level by pre-processing the track.
If a track/encoder combination causes non-repeatable overload problems, and yet the desire is
to encode as hot as possible, the third option can be used. This will pre-pass the file, calculate
the maximum overload, and trim accordingly. As this is a file-based operation, this will give
a repeatable result.
A fourth option is included, which will pre-pass then normalise the track. This can be used
when a track is at a relatively low level, to boost the level just short of overloading.
4.5 Down-sampling Issues when Using Higher Sample Rates
There are several circumstances when the plug-in internally down-samples. One example is
the auditioning of certain codecs, possibly because the session sample rate is higher than the
highest sample rate that the codec supports. In this case, the audio is down-sampled for the
codec, and then up-sampled for audition. In this case, a down-sampled signal is available in
the codec for writing to a file in online encode mode.
In offline mode this is not the case. The user cannot offline encode a wav whose channel
configuration and sample-rate is not a match for the codec settings in the plug-in. This is
because of possible indeterminate behaviour if the configurations are not compatible. This is
particularly important if you are working with a higher sample rate session and choose to
offline encode.
If you are working at higher sample rates, the options are exemplified by:
1. Master at 88.2kHz and produce a gold master, then audition codecs at 88.2kHz, and
online encode at 88.2kHz.
2. Master at 88.2kHz and produce a gold master. Downsample gold master to CD mix
at 44.1kHz. Load CD mix session, audition codecs, create wav file, and offline
encode.
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