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Topic: Dual Channel question (Read 2882 times) previous topic - next topic
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Dual Channel question

K, well here I have a bunch of MP3's that were encoded in dual channel - 320 kbps. I read the definition but  I'm not sure I understand the whole thing completely.

Can someone please tell me what kind of quality are we talking about here? In comparison to stereo/join-stereo at same or lower bitrates.

Thanks, guys 

Dual Channel question

Reply #1 –
Quote from: Tarm on
K, well here I have a bunch of MP3's that were encoded in dual channel - 320 kbps. I read the definition but  I'm not sure I understand the whole thing completely.

Can someone please tell me what kind of quality are we talking about here? In comparison to stereo/join-stereo at same or lower bitrates.

Thanks, guys 

It means that it encodes the two channels as if they were two mono streams at 160kbps.  It could potentially be of lower quality.  This is especially true if the encoder has turned off binaural masking between the two channels.
 

Dual Channel question

Reply #2 –
Dual channel means that it is supposed to be a dual content.
Examples:
*movie dialogs/director's comments
*german/english

Encoder can change bit allocation between channels, but can not exploit stereo redundancy and should not use any binaural masking.

Regarding quality, it should be noticably inferior to joint stereo and a little lower than stereo.