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Linear Acoustic LA-5180 Metadata Frame Sync/Generator Operation Manual Metadata
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7.2 Informational and Control Metadata
In the simplest terms, there are two functional classifications of metadata parameters with-
in a consumer metadata stream:
Informational: These parameters convey information but do not affect either the encoded
bitstream or the decoding process. For example, the Bitstream Mode parameter describes
the audio service provided in the bitstream. This information may be used by certain com-
ponents in the audio system.
Control: These parameters direct how the decoder, encoder, or both process the audio
when certain modes are applied to the encoder or decoder. For example, the LFE Lowpass
Filter parameter determines whether a lowpass filter is applied to the LFE input of a Dolby
Digital encoder.
Table 7-1 below lists all of the consumer metadata parameters and indicates whether the
parameter is for informational purposes or control purposes.