Sonnox Fraunhofer Pro-Codec Manuale Utente Scaricare il pdf (Pagina 36)

5.9 HD-AAC 5 THE PRO-CODEC PLUG-IN

Whatiftheinputsignalisnotcorrectlyprepared?

HD-AAC 24 bit with INCORRECT or NO dither and truncation prior to the Plug-In. HD-AAC 24

bit internal dither is DISABLED.

HD-AAC 16 bit with INCORRECT or NO dither and truncation prior to the Plug-In. HD-AAC 16

bit internal dither is DISABLED.

In these cases, it is clear that the HD-AAC truncation to 16/24 bits is causing truncation

distortion.

Note:

The HD-AAC processing will still be lossless to 16/24 bits, however, the signal that is

losslessly encoded has already been distorted prior to the encoder input, so is not an

accurate representation of the signal prior to the Pro-Codec Plug-In!

In these cases, the bottom bits of the bit meter are ﬁlled red. This red ﬁll indicates that

truncation distortion is occurring!

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Sonnox Fraunhofer Pro-Codec Manuale Utente Pagina 36