Lets assume that I do not want to get into the details of Dolby, Audio Codecs and number of channels and their geographic orientation....
My goal is a 2ch Aac, evtl. 5.1 Aac, 2ch MP3, 2ch whatsoever....
By reading all the guides that are out there (mostly BeSweet) its always "do as we tell you"...., sometimes a remark why in short-cut semantic but without any background....
And so I miss the whatever source to PCM WAV (5.1, Stereo, Mono) ....
The Guides are telling me to use normalization in Azid if I use AAC but if not I have to use the Hybrid/Post (various sources) of BeSweets OTA.....
I have to use -3 Db on LFE to LR always mentioned to 5.1 sources, but whats with DD2.0 ?
So what I haven't found and want to know is - when I want a WAV from 5.1 AC3/dts and DD2.0 AC3 and plain Stereo Source..... what are the particular settings I need (BeSweet GUI)... As I do not want to buy Nero, nor am I in favour of PsyTel vs. Faac (Users decision) or if I plainly want a MP3 or whatsoever in 2ch..... the possible intermediary step would be a PCM file... same for 5.1.... only transcode it to a "lossless" format that inherits the targeted properties (delay (wich for my experminets on mp4 container (but mp4 is just one container I wanted to try out) is a must, else I would be just the lucky blind notknowing person wich trusts FooBar), sampling frequency, <gain/normalization/etc.>)..... and from that you can encode with whatever (cli) codec you want.....
And as I still hope that someday there will be a guide for all sources, lets in my question focus on AC3 to WAV....
And my questions I can pronounce so far are....
LFE to LR if 5.1->2.0 only? Or also with 2.0 sources?
Normalization/Gain just (as I assume) in 1 app (azid/ssrc/<boost>/besweet) or is it needed in some cases to apply it in each app?
(As I never understood why in the guides its mentioned to (if not AAC) use Hybrid Gain and with AAC the normalize within the AzidTab (BSGUI) ->
http://aboutvideo.h10.ru/conv-edit-audio_f..._line_refer.htm
[quote]
... here's a quote of 'tangent' :
"I believe that the benefits of postgain and more than worthwhile.
Quality wise, it would not be the same as pregain, and one cannot absolutely say if it would be worse, better or similar.
I can say that for most people out there the difference is inaudible, and in my opinion the quality should be better.
This, plus the fact that postgain method is faster is enough for me to choose the postgain method.
One last final advantage of post-gain is that you can guarantee that with post-gain applied,
you can absolutely guarantee that the decoded playback will not clip and will have the highest volume possible (within 1.5dB).
With pre-gain, there is no such guarantee, and you cannot be sure if the decode playback will clip or have the highest volume possible."
[quote]
... cont. ... So I assume (the guides are not going into such a detail) that the reason must be the transfer to the encoder&the codec.... so OTAs Gain may be applied for certain codecs (and is the better choice) but for other codecs its needed to do the gain in the aziz decode step -> now for what codecs does that apply? under wich circumstances? (as the guides are always on a particular output format... would the normalization through azid vs. ota option still be valid for aac if you use the intermedient "dummy" wav... or is it that with such a wav I follow the directions given for mp3/ogg/etc. ?)
I've never encountered a SOURCE->WAV guide for BeSweet so far.....
And therefore are somewhat confused about the guides!
surround(DPL),surround2(DPLii)... etc.... LFE to LR.... Dynamics (Heck, I disabled them in my DVD player - but if there is some form of data stored in the original container that tells the decoder how to act, I either want to preserve that or if thats not possible get the default standalone device option (that would be normal DC?))?
So 5.1 source, 2.0DD Source, 2.0 Source & Mono Source (lets not talk about sampling frequencies for now) what options do I need to get a 1:1 transfer to wav ? And is a <format of choice> able to act on the metainfo (is DD metadata? is Subwoover Info Meta?) in that file? I am pretty confused as with every AC3 Decoder I get the option of Dynamic compression and normalization - but for other sound formats I've sawn no A/V Media Player that has that option... So do I have to incorporate that data in my encode (and then where does it make a difference in my choosen Apps? Lets focus on wav as output here) or is such information transparent regardless of codec ?
Sorry - to get my brain streight I really need such a X Source -> Y Target guide, or some right slaps on my backhead
Especially as all guide name stereo or mono somewhere but all steps explained focus on a 5.1 source..... I hope someone can sort out the "right" questions from my "confussion",
Thanks!
CU,
SHAnDRA
