Whats the difference.

[Haku]

When encoding a svcd i do the sound sound to 44100hz,224kbp and channel mode stereo.

Whats the difference between stereo,dual channel and joint stereo ??

[johneboy]

Whats the difference between stereo,dual channel and joint stereo ??

i look forward to this response, as i wonder the same

[SingSing]

Stereo is the normal left and right channels.

Dual channel should be one language on left channel, and another language on the right channel.

Joint Stereo ? Hmm, could it be music and vocal for karaoke ?

[vitualis]

If you don't know the answer SingSing, please don't guess.

These are 3 different modes of stereo MPEG audio encoding.

Dual-channel is where exactly half the bitrate is given to each channel all the time.

Standard stereo is where the bitrate can be allocated dynamically duing encoding to the channel than has more "need". For example, if the left channel is silent and the right channel has audio, the majority of the audio bitrate can go to the RIGHT channel.

Joint stereo encodes the audio as L+R and L-R. Basically, the audio is encoded with the redundancy between the channels taken into account. For example, if the L and R channels were very similar, then you effectively BOOST the overall bitrate for the audio.

In terms of encoding efficiency, joint stereo is the most efficient and dual channel is the least.

The problem with joint stereo encoding, however, is that it can affect the phase information in the audio and this can negatively affect Dolby Surround. Thus, joint stereo encoding for VCDs is not recommended if you want to use Dolby Surround.

Furthermore, at the relatively high bitrate of 224 kbit/s MP2 audio, there is little quality benefit of joint stereo over standard stereo.

Some people claim that Dolby Surround sounds better with Dual Channel encoded, but I personally can't hear a difference.

Dual-channel encoding (apart from the above) is probably most appropriate for dual language discs (where language one is the left channel and language two is the right channel). This is as each channel is meant to be listened to independent of the other. However, a similar argument could be made for joint stereo encoding as dual language discs tend to have a LOT of redundancy between channels (apart from spoken language, everything else tends to be the same) and the disadvantage of joint stereo affecting left-right separation and phase would be irrelevant.

Regards.

[Haku]

vitualis ..... thanks for the info.

Now i know im gonna stick with Stereo for my svcds.

[SingSing]

So,

Stereo is the normal left and right channels.

Dual channel should be one language on left channel, and another language on the right channel.

Joint Stereo ? Okay, I don't know.

Or

Read the Eassy length Reply.

[vitualis]

SingSing, you really don't know how to read do you?

All three create STEREO audio (i.e., where the left and right channel can contain different audio). They are different modes of MPEG encoding.

Regards.