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21st July 2011, 03:51 | #11142 | Link |
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I put in a search of "6.1" and it told there are no results. Searching is fun with a crippled search function. It said the same thing when attempting to search on DTS-MA 6.1.
Last edited by lostclusters; 21st July 2011 at 03:55. |
21st July 2011, 05:28 | #11143 | Link | |
47.952fps@71.928Hz
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Use Google with search functions
Quote:
"quotes" are usually required. Google has a better chance, since it's diverse. dts-ma will show you dts-hd ma, dtsma, dts ma, etc with Google. With the forum search, it looks for exactly what you type in.
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26th July 2011, 03:55 | #11145 | Link |
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quick question:
If I transcode DTS-MA to FLAC, and later decide to transcode that FLAC back to DTS-MA with Surcode, will the end file be basically identical to the first, or will the -core or other information be lost forever? |
26th July 2011, 20:55 | #11147 | Link | |
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Quote:
I haven't tried, but adding "-no2ndpass" to your commandline might do it. The wav is written so that if a second pass is necessary, which isn't always known before the first pass is complete, you don't need to decode the audio again. You might have audiable problems if you use that option. |
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2nd August 2011, 11:03 | #11148 | Link |
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I'm having trouble converting the following stream to LPCM:
DTS-HD Master Audio English 1064 kbps 1.0 / 48 kHz The resultant LPCM file is playing way too fast. I take it because there's no official LPCM 1.0? In any case, how do I convert this to a normal, playable, LPCM track? Thanks.
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2nd August 2011, 22:13 | #11149 | Link |
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About the eac3to 6.1 DTS-HD downmixing 'bug', if I output to individual WAV files could someone let me know how to mix the back center channel with the surround left/right channels manually/correctly please?
Could I do it with eac3to, eg: eac3to rightsurround.wav+backcenter.wav output.wav Last edited by iSeries; 2nd August 2011 at 22:22. |
3rd August 2011, 09:56 | #11150 | Link |
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Nope, you can use an audio editor (like Audacity or others), a command line tool like sox, or Avisynth (with BeHappy, wavi, ...) to do a mix like:
BL = 0.5858 x SL + 0.4142 x BC BR = 0.5858 x SR + 0.4142 x BC The recommended .avs' can be something like: sl = WavSource("D:\...\SideLeft.wav") bc = WavSource("D:\...\BackCenter.wav") MixAudio(sl, bc, 0.5858, 0.4142) Normalize() To obtain BL channel, and for BR channel: sr = WavSource("D:\...\SideRigth.wav") bc = WavSource("D:\...\BackCenter.wav") MixAudio(sr, bc, 0.5858, 0.4142) Normalize()
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3rd August 2011, 19:09 | #11152 | Link |
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add:
Code:
ConvertAudioTo24bit()
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3rd August 2011, 22:54 | #11155 | Link |
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Well, nothing is perfect. You can't obtain always the same global audio volume with 7 speakers than with 6.
If you want preserve the balance volume betwen front and back channels maybe you need make this mix: BL = SL + 0.7071 x BC BR = SR + 0.7071 x BC preserve the 32 bit float and check if there are values greater than 0 dB, if yes you need use the normalize only over BL-BR and lose some back volume, if not you don't need the normalize and the balance volume is ok.
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4th August 2011, 09:34 | #11157 | Link | |
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Quote:
Replace your last line with this: Code:
MixAudio(sl, bc, 1.0, 0.7071) |
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4th August 2011, 13:29 | #11158 | Link |
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Thanks! Sorry one last question lol, how can I check if clipping has occured? Am I right in thinking that if I open the wav in Audacity and nothing goes beyond 1.0 or -1.0 then there is no clipping?
Also, I don't really understand any of this so a brief explanation on the difference between MixAudio(sl, bc, 0.5858, 0.4142) and MixAudio(sl, bc, 1.0, 0.7071) ...would be greatly appreciated Last edited by iSeries; 4th August 2011 at 14:11. |
4th August 2011, 14:58 | #11159 | Link | |
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Quote:
MixAudio(sl, bc, 0.5858, 0.4142) make: BL = 0.5858 x SL + 0.4142 x BC the audio never can be greater than 1.0 (0 dB), without clip and MixAudio(sl, bc, 1.0, 0.7071) make: BL = 1.0 x SL + 0.7071 x BC the audio can be greater than 1.0, then you can have clipping.
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BeHappy, AviSynth audio transcoder. Last edited by tebasuna51; 4th August 2011 at 15:01. |
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4th August 2011, 16:26 | #11160 | Link |
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Many thanks. I used MixAudio(sl, bc, 1.0, 0.7071) for LOTR Fellowship 1/2, and this produced no clipping. The Two Towers 1/2 and Return of the King 1/2 did produce clipping using that so for these I re-did with MixAudio(sl, bc, 0.5858, 0.4142). I'm guessing thats all ok (Audacity shows no clipping for all wavs)
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eac3to |
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