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31st August 2003, 22:26 | #24 | Link |
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is there any way at all of using these equations for converting stereo to b-format:
Dolby MP: W' = 0.36(S - jD(a /180)) X' = 0.54(S + jD(a /180)) Y' = 1.00D(a /180) where: S = Left + Right D = Left - Right a = Width control, varying between 0 and 180° j = 90° phase shift taken from: http://www.geocities.com/ambinutter..._equations.html if usde it sould provied better results on dolby surround Last edited by Sycho; 31st August 2003 at 22:55. |
31st August 2003, 22:57 | #25 | Link |
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@ sycho: Can't answer your Q directly, but here are 2 suggestions:
1) Have a look at the non-GUI-version of B-Pan-e, and especially at the related documentation . There are much more settings there to play around with. 2) I'm sure the author (Dave Malham) would be able to answer. You might send him an email. Keep us posted on your findings ... Regards, Andreas |
1st September 2003, 02:26 | #26 | Link |
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High End Test
I spent A good portion of my late night making files from cd and mp3. I finished late morning
with A good mix of songs all encoded the same. centers up a 1/4 LFE at 500's @60hz using the 16bit method. Besweet to demux and resample @ 48000. DTS encoded to 24/48000. Now I traveled 30 mile to my trusted highend stereo shop where the gave me the room with about 60-$80,000 system the pricer one wouldnt play my files heh. surfing the disk on there $5000 dvd audio player was troublesome only rendering track1,2,3 etc no folders...{they didnt have the model I bought on floor} but anyway played 5 or 6 diff tracks. The sounds drew A bit of a crowd as salesmen brought customers in and volume was at A loud setting they started asking who, what is this? All were thoughly impressed and enjoyed children of the sun huge. I know this guy runs comparison test and room environment sweet spot test... so I kept asking for his proffesional opinion I think I got it he, just kept saying it sounded sweet and asking how I made them and would I do his favorite CD he uses to setup sytems... with the music he likes best So now im sure this is the way to do surround sound. Good job guys and as they say the proof is in the pudding... now about doing this 24 bit PS he loved the bass coming from the 15in subwoofer and asked if I turned it up... um er i used .500 i said heh LFE baby yeah
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[System] AVP-Rotel RSP-1066; DVD Audio/Video-Rotel RDV-1060; AMP-Rotel RMB-1075; Speakers JBL, Rock Solid And Polk Audio |
1st September 2003, 04:26 | #27 | Link |
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ok lets see if I can get on to better.
so lets say i want to work at 32 bits and end up with 24 bit... also @48000 so i tried making 6 recorders @24 bit but rendered some of the channels invalid or with un recoverable errors. can this be done in the bidule? If so an example please :-)
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1st September 2003, 15:30 | #28 | Link |
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@ bitsnbytes: Thanks for the nice feedback.
The Ambisonic VST's (B-Pan, B-Proc, Emigrator) work at 32 bit (even 64). For quick tests, I suggest you use CoolEdit (or your preferred app) to bring things up to 32 bit precision and 48 kHz before you feed into the Bidule scheme. To my knowledge, the encoders (ac3 or dts) will request 16 bit input, so just use the 'Audio File Recorder' in Bidule with the 16-bit depth. Regarding the LFE: I have not tested this yet, but this might only work in 16 bit (and therefore the errors you got). So you'd have to use a more complex set-up scheme to do things in one run. Regards, Andreas |
1st September 2003, 16:12 | #29 | Link | |
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Quote:
Nice work EoH |
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1st September 2003, 17:32 | #30 | Link |
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EOH
For those that own the Nuendo Dolby DIgital Encoder. How about just plugging in this baby and then just straight encode into AC3 from Bidule. Also has Decode for AC3 in package - decode DD AC3 2.0 from some dvds and then viola, Ambisonic AC3 Am waiting with baited breath for the Nuendo DTS encoder to appear - Also when I can afford it Hopefully it also contains a Decoder for DTS. |
1st September 2003, 17:39 | #31 | Link | |
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Quote:
AC3 2.0 to Ambi AC3 5.1 : See former message about LPCM :-) I think you can forget about the decoder :-( I like the possibility (if it is possible !) to have a DTS encoder on the Bidule screen ! OTOH DTS has not much options, so for quality I doubt anything will change....... BTW good to see you here too EoH |
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1st September 2003, 17:49 | #32 | Link | ||
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@EoH:
Quote:
Quote:
Andreas |
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1st September 2003, 17:53 | #33 | Link |
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experiment !!!!
Today I did so many experiments...... I lost count
That's the nice thing with this system. There are hundreds of freeware VST plugins and they are so easy to use in Bidule and on "our" Ambi project. You can immediately hear the effect..... Here are a few sites with loads of free plugins..... http://usitweb.shef.ac.uk/~mup01jrm/vst/vstlinks.htm http://acidfreak.future.easyspace.com/ http://www.vstcentral.com/results.as...Submit2=Submit For those who are real ambitious : make your own VST ! http://www.steinberg.net/en/ps/suppo...load/index.php EoH |
1st September 2003, 17:58 | #34 | Link |
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I converted the .wav to 32bit 48000 then loaded it in the player and set recorder to 16bit.
Result was a 16/44 and sound was muffled, female voice was mannish. Perhaps the setup doesnt handle 48000? I played the original file sounds fine.
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[System] AVP-Rotel RSP-1066; DVD Audio/Video-Rotel RDV-1060; AMP-Rotel RMB-1075; Speakers JBL, Rock Solid And Polk Audio |
1st September 2003, 18:39 | #35 | Link |
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@ bitsnbytes: I might have given a wrong suggestion earlier. In summary, and more concrete:
What I tested and what works: - Increase precision to 32-bit before Biduel scheme - Record to 16 bit multichannel wav - Use BeSweet to upsample to 48 kHz after the Bidule scheme, using: BeSweet -core( -input In-6ch.wav -output Out_ -type wav -6ch ) -ota( -G max ) -ssrc( --rate 48000 ) What I didn't test, is the 48 kHz upsampling before running the Bidule scheme. I just assumed it works... Maybe that's not the case, which would explain the muffled sound you mention. @ EoH: Hope that doesn't mean Guide v1.02 LOL Andreas |
1st September 2003, 18:56 | #36 | Link | |
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Quote:
EoH |
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1st September 2003, 18:58 | #37 | Link | |
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Quote:
Author of Bidule said : 48 Khz before using it ! But..... don't forget you also have to change in the settings-menu !! EoH |
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1st September 2003, 22:14 | #38 | Link |
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ok got this sucker workin now
cool edit I resample to 32/48 set recorders to 24bit Load 6 Recorders only link 1 at a time 6th recorder is LFE/Optional record one channel at a time slow but I think results are worth looking at,the lack of "normalizing" is a different sound all together. Ok Emigrator Mapping for those crazy enough to follow heh from left to right channel l = Center channel 2 = Front Left channel 3 = Rear Left channel 4 = Right Rear channel 5 = Front Right channel 6 = LFE /optional Really hope they can fix this so we can output to 6 recorders at a time MY HNM Low Pass Filter settings for Subwoofer Crossover @ 60hz Filter: .060 CutOff: .017 Resonance: .500 Slope: .000 InAmp: .500 OutAmp: .333 im lookin at increasing this slightly... .500 was very intense I had to reduce SW to -5db .333 is nice but I want A inbetween ;-)
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[System] AVP-Rotel RSP-1066; DVD Audio/Video-Rotel RDV-1060; AMP-Rotel RMB-1075; Speakers JBL, Rock Solid And Polk Audio Last edited by bitsnbytes; 2nd September 2003 at 04:41. |
1st September 2003, 23:51 | #39 | Link |
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Try using 'Audio FIle Recorder' (6 channels) for the 5 pins from Emigrator (as outlined in the guide), and use the proven DSPGuru tools (BeSweet ... -6ch -OTA). For the LFE, try using one 1-channel 'Audio File Recorder'.
Good luck, Andreas |
1st September 2003, 23:57 | #40 | Link | |
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@ EoH / all:
Quote:
B-Plane Mirror B-Mic Bpan3 - Third Order Ambisonic Encoder Let's test Andreas |
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