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Old 31st August 2003, 21:04   #21  |  Link
erymax
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Can you post a link for the latest version ?

thanks



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Old 31st August 2003, 21:19   #22  |  Link
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@ erymax

read the posting right from the start


CYA Daphy
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Old 31st August 2003, 21:39   #23  |  Link
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@daphy

thanks, I've got it now, sorry for my mistake.

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Old 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.
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Old 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
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Old 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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Old 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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Old 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
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Old 1st September 2003, 16:12   #29  |  Link
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Quote:
Originally posted by daphy
thx for the suggestion

I added this profile to the layouts (use save as.. option).
(see the connections)
If this is the only problem - nevermind

Fine toy!
Im wondering to make a DVD instead of many CDs.
What format (WAV in 44.1 or 48 khz) are needed to make a Audio DVD on DTS?

CYA Daphy
Thanks for the module you made !
Nice work

EoH
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Old 1st September 2003, 17:32   #30  |  Link
specise_8472
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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.
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Old 1st September 2003, 17:39   #31  |  Link
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Quote:
Originally posted by specise_8472
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.
I know, we thought about it, but .....it's nit freeware, huh ?? LOL !!

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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Old 1st September 2003, 17:49   #32  |  Link
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@EoH:
Quote:
Do you prefere "normalise" on all files (with a VST plugin or a preprocessor like R8brain) before the Ambisonics conversion or afterwards on all 6 mono wavs ?
Normalise (with BeSweet -ota( -G max ) ) after b-file decoding. After all, this is what the 'old' Command-Line Ambisonic Decoder does (where the -g switch is disabled by default).

Quote:
I still have some problems when I input a 32 bits file and output (in the file recorder) as 16 bits.....
Strange ... always works here...

Andreas
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Old 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
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Old 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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Old 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
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Old 1st September 2003, 18:56   #36  |  Link
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Quote:
Originally posted by bitsnbytes
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.
Did you change the 44100 to 48000 in the settings screen ???

EoH
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Old 1st September 2003, 18:58   #37  |  Link
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Quote:
Originally posted by kempfand
@ 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
Nope

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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Old 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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Last edited by bitsnbytes; 2nd September 2003 at 04:41.
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Old 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
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Old 1st September 2003, 23:57   #40  |  Link
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@ EoH / all:
Quote:
Today I did so many experiments...... I lost count
More food:

B-Plane Mirror

B-Mic

Bpan3 - Third Order Ambisonic Encoder

Let's test

Andreas
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