Good tool for .dts to 2ch .wav?

[simps]

What is a good tool out there to open a .dts audio file, and decompress it into 2ch .wav?

[]'s
Simps

[kypec]

Friendly advice -> you better quickly replace that best wording in your post because mods are heavily allergic to it!:readrule:

[simps]

Done, best now is equal to good.
Anyone?

[tebasuna51]

- Eac3to (command line: eac3to in.dts 2ch.wav -down2 -normalize)
- Foobar2000 (with foo_input_dts.dll and foo_dsp_downmix.dll)
- BeHappy/MeGUI (AviSynth with NicAudio.dll)

[simps]

- Eac3to (command line: eac3to in.dts 2ch.wav -down2 -normalize)
- Foobar2000 (with foo_input_dts.dll and foo_dsp_downmix.dll)
- BeHappy/MeGUI (AviSynth with NicAudio.dll)

Thanks!
I am giving eac3to a go. It worked.
Looks like it is using "libav/ffmpeg" to decode the .dts file.
[1st question] Am I losing quality by decoding with "libav/ffmpeg" instead of ArcSoft DTS decoder, for example???

Also, the .dts file is 24bit. If I use your command line:
eac3to in.dts 2ch.wav -down2 -normalize
I think I would get a 24bit .wav. Is it right? Shouldn't I get a 16bit .wav?

For 16bit, I belive I should add (-down16) to the command line, and it will be something like this:
eac3to in.dts 2ch.wav -down2 -down16 -normalize
[2nd question] Is that right for getting a 16bit 2ch decompressed .wav, from a 24bit multi-channel .dts????

[3rd question] Also, what -normalize do? It does not apper on the descriptions when you type eac3to.exe on prompt.

Thanks.
Simps


eac3to v3.16
command line: eac3to c:\aaa\a.dts c:\aaa\a.wav -down2 -down16 -normalize
------------------------------------------------------------------------------
DTS, 5.1 channels, 2:46:03, 24 bits, 1509kbps, 48khz
The ArcSoft and Sonic decoders don't seem to work, will use libav instead.
Decoding with libav/ffmpeg...
Remapping channels...
Downmixing multi channel audio to stereo...
Reducing depth from 64 to 16 bits...
Writing WAV...
Creating file "c:\aaa\a.pass1.wav"...
Starting 2nd pass...
Reading WAV...
Reducing depth from 64 to 16 bits...
Writing WAV...
Creating file "c:\aaa\a.wav"...
The original audio track has a constant bit depth of 16 bits.
The processed audio track has a constant bit depth of 16 bits.
eac3to processing took 7 minutes, 33 seconds.
Done.

[tebasuna51]

[1st question] Am I losing quality by decoding with "libav/ffmpeg" instead of ArcSoft DTS decoder, for example???
I don't think so, but you are free to use ArcSoft DTS decoder.
Only for DTS-HD is recommended.

[2nd question] Is that right for getting a 16bit 2ch decompressed .wav, from a 24bit multi-channel .dts????
Is right to obtain a 16bit wav, but I don't know 24bit dts's (only if is HD Master Audio).
The precission in lossy compression is measured in KB/s not in bitdepth.

[3rd question] Also, what -normalize do? It does not apper on the descriptions when you type eac3to.exe on prompt.
Is a second pass to maximize the output, optional of course, but recommended after a downmix.

[simps]

Thanks again.
I have another doubt.

What about the command line -mixlfe.
Shouldn't I use that too, for a multi-channel to stereo downmix, with eac3to?
Is it going to improve quality?

[]'s
Simps

[tebasuna51]

Dolby don't recommend mix the LFE channel (sometimes the info is distroyed instead added), but you are free to use.

[simps]

Thanks.
Looks like eac3to worked fine (I am just using the command line, not the GUI), dowmixing any multichannel to stereo and also creating 6 mono .wavs from any 5.1 audio. I can encode those .wavs in Vegas to .ac3 5.1. This is all I need for now.

I am going to try BeHappy now, to see how it goes, doing that.
Hope you can help me out if I have some trouble.

[]'s
Simps

[b66pak]

actually it downmix 5.1 multichannel ONLY!!!
_

[simps]

actually it downmix 5.1 multichannel ONLY!!!
_

eac3to????
Are you saying it can only downmix 6ch to 2ch? Not 7 or 8ch to 2ch?

[b66pak]

nor 3, 4 or 5...
_

[simps]

Didn't know that... But I guess it is still fine, since 6ch is the most used...
Can BeHappy downmix 7 / 8ch to stereo?

Also, with eac3to, I think you can downmix 7 / 8ch to 6ch (5.1), and then downmix the 6ch to stereo. Can this be done?

[tebasuna51]

Didn't know that... But I guess it is still fine, since 6ch is the most used...
Can BeHappy downmix 7 / 8ch to stereo?
Behappy can accept avs files, then can make any downmix.
But only there are a few downmix options implemented in DSP functions.

If you use the DSP functions with 7/8 channel files the last channels are ignored. BTW, I think is better option than try to include all the channels in the 2.0 downmix.

For 3, 4 and 5 channels there are much more options because:
3 channels can be: 2/1.0, 2/0.1, 3/0.0
4 channels: 2/1.1, 2/2.0, 3/1.0, 3/0.1
5 channels: 2/2.1, 3/1.1, 3/2.0

And you can need plain stereo downmix, Dolby ProLogic or DPL II and include or not the LFE channels.
See in this post (http://forum.doom9.org/showthread.php?p=1243880#post1243880) a couple of functions to use the desired.

[simps]

BeHappy woked great too. So now I have eac3to and BeHappy to downmix to stereo almost any 6ch format (.ac3, .dts, .aac, etc). No sync problems with both programs.
I tried the same .dts file, with both programs, and eac3to did it about 10% faster. Was this expected?

[]'s
Simps