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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To avoid these problems after changing the session configuration, it is advisable when using
affected host applications to press PLAY, then STOP, before instantiating the plug-in or
loading a plug-in Preset. This will ensure that session sample rate and channel configuration
data are flushed through the plug-in correctly.
It is also advisable to save Presets for the plug-in at a variety of session sample rates and
channel configurations.
To illustrate this further, consider the following examples. WaveLab7 is used in these
examples because it has the powerful ability to easily select and play files with different
sample rates. Several other applications exhibit the same behaviour.
4.8.1 Example 1. Different session sample rates and compatible codec bitrates
WaveLab 7 is an example of an application that only provides session configuration
information to a plug-in when there is an active audio data stream (ie. the transport is set to
play).
Using WaveLab 7, make three mono 24-bit wav files available via the tabbed windows in the
audio file workspace. One is 32kHz, and is currently selected and playing. The unselected
tabs have a 44.1kHz wav file and a 22.05kHz wav file available.
A Sonnox Fraunhofer Pro-Codec is instantiated and shows the default codec as AAC-LC 192
kpbs. Note the usual default of 256 kbps is not valid for a mono wav file (see section 10.2 for
the full table of codec supported sample rates).
If the 22.05kHz file is selected, and play stopped and re-started, the codec will automatically
select 28 kbps (which is the closest to 192 kbps that the codec supports at 22.05kHz).
If the 44.1kHz file is now selected, and play stopped and re-started, the codec will
automatically select 56 kbps (the closest to 28 kbps that the codec supports at 44.1kHz).
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