Right channel order with six waves to 5.1 AAC encoding

AlexeyS · 16th July 2005, 18:21

Still can't find right answer for this question. Some people say "C, FL, FR, SL, SR, LFE" is right order.

I've tried to encode this way with Belight and got wrong channels.

This way seems right for me:
FL, FR, C, SR, SL, LFE

What channel order is right. Still there is no normal answer for this question.

AlexeyS · 16th July 2005, 19:07

I've made sample. Could somebody who have good 5.1 sound system on own copmuter try this 5.1 AAC file.

Is this channel order right?

Oki · 16th July 2005, 23:08

Take this 5.1ch test WAV as reference.

Regards,
Oki

AlexeyS · 16th July 2005, 23:13

Quote:

Originally Posted by Oki

Take this 5.1ch test WAV as reference.

Thanks, but I've encoded six mono waves to 5.1 AAC (not one 5.1 wav I mean)...

tebasuna51 · 17th July 2005, 01:37

The correct order for BeLigth (bsn encoder) is: FL, FR, C, LFE, SL, SR
This order is also the defect for Faac.

If you use aacenc32 the order is: C, FL, FR, SL, SR, LFE

AlexeyS · 17th July 2005, 01:46

Quote:

Originally Posted by tebasuna51

The correct order for BeLigth (bsn encoder) is: FL, FR, C, LFE, SL, SR

I use Belight with Nero AAC Plugin. And this order looks like right. Thanks.

bond · 17th July 2005, 12:32

the only right channel order for 5.1 aac is
C, L, R, SL, SR, LFE

whether you have to feed some encoders with different ones, dunno, the output channel order has to be as defined above

AlexeyS · 17th July 2005, 12:59

Quote:

Originally Posted by bond

the only right channel order for 5.1 aac is
C, L, R, SL, SR, LFE

whether you have to feed some encoders with different ones, dunno, the output channel order has to be as defined above

I've tried Belight/Besweet with Nero AAC Plugin installed. When I try to convert six waves (made with Belight from 5.1 AC3 file) to 5.1 AAC with this order - C, L, R, SL, SR, LFE, I get center channel in front left speaker.

Same problem when I use my USB headphone speakers. Center channel is always in left speaker.

Tried on few AC3s...

bond · 17th July 2005, 13:06

why are you going via 6 wavs anyways?

tebasuna51 · 18th July 2005, 01:51

I use Belight 0.2.2b4 with Nero (6.6.0.1) aac plugin.
I take the 6_Channel_ID.wav (Oki) renamed to L_R_C_LFE_SL_SR.wav (to identify the channel order) and make the next conversions with Belight:

L_R_C_LFE_SL_SR.wav -> Correct.mp4
L_R_C_LFE_SL_SR.wav -> Wrong.ac3
L_R_C_LFE_SL_SR.wav -> FL.wav, FR.wav, ..., SR.wav

L_R_C_LFE_SL_SR.mux -> Correct.mp4
L_R_C_LFE_SL_SR.mux -> Wrong.ac3

L_C_R_SL_SR_LFE.mux -> Correct.ac3
L_C_R_SL_SR_LFE.mux -> L_C_R_SL_SR_LFE.wav
L_C_R_SL_SR_LFE.wav -> Correct.ac3

Correct.ac3 -> Correct.mp4
Correct.ac3 -> L_R_C_LFE_SL_SR.wav
Correct.ac3 -> FL.wav, FR.wav, ..., SR.wav

With Foobar:
Correct.mp4 -> L_R_C_LFE_SL_SR.wav

With Faad:
Correct.aac -> L_R_C_LFE_SL_SR.wav

With Faac:
L_R_C_LFE_SL_SR.wav -> Correct.aac

With aacenc32.exe
C_L_R_SL_SR_LFE.wav -> Correct.aac

AlexeyS · 18th July 2005, 10:05

Quote:

Originally Posted by bond

why are you going via 6 wavs anyways?

I use six waves only when I need some "external editing".

AlexeyS · 18th July 2005, 10:34

I've muxed this file with BeLight.

Is channel order right on your 5.1?

tebasuna51 · 18th July 2005, 17:03

Is wrong.
Your C channel contents dialogs. OK
Your L channel maybe a L or R
Your R channel maybe a L or R
Your LFE channel maybe a SL or SR
Your SL channel maybe a SL or SR
Your SR channel contents LFE sound

You can verify this with:
sample.mp4 -(foobar)-> L_R_C_LFE_SL_SR.wav -(Belight)-> FL.wav, FR.wav, ..., SR.wav
And listen each channel.

AlexeyS · 18th July 2005, 17:06

Check out audio.mp4 please which is above your last post.

tebasuna51 · 18th July 2005, 17:21

Sorry, I take your first sample

audio.mp4 is wrong only for this: SR <-> LFE

AlexeyS · 18th July 2005, 17:34

Quote:

Originally Posted by tebasuna51

Sorry, I take your first sample
audio.mp4 is wrong only for this: SR <-> LFE

So right order for six waves to 5.1 AAC with Belight is FL, FR, C, LFE, SL, SR.

Thanks for help.

16th July 2005, 18:21	#1 \| Link
AlexeyS Registered User Join Date: Jan 2005 Posts: 437	Right channel order with six waves to 5.1 AAC encoding Still can't find right answer for this question. Some people say "C, FL, FR, SL, SR, LFE" is right order. I've tried to encode this way with Belight and got wrong channels. This way seems right for me: FL, FR, C, SR, SL, LFE What channel order is right. Still there is no normal answer for this question.

17th July 2005, 12:32	#7 \| Link
bond Registered User Join Date: Nov 2001 Posts: 9,770	the only right channel order for 5.1 aac is C, L, R, SL, SR, LFE whether you have to feed some encoders with different ones, dunno, the output channel order has to be as defined above __________________ Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ \| AVC/H.264 FAQ \| AAC FAQ \| MP4 FAQ \| MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora \| Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free

17th July 2005, 13:06	#9 \| Link
bond Registered User Join Date: Nov 2001 Posts: 9,770	why are you going via 6 wavs anyways? __________________ Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ \| AVC/H.264 FAQ \| AAC FAQ \| MP4 FAQ \| MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora \| Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free

16th July 2005, 19:07	#2 \| Link
AlexeyS Registered User Join Date: Jan 2005 Posts: 437	I've made sample. Could somebody who have good 5.1 sound system on own copmuter try this 5.1 AAC file. Is this channel order right?

16th July 2005, 23:08	#3 \| Link
Oki Signal processing lover Join Date: Jul 2005 Location: Barcelona (Spain) Posts: 42	Take this 5.1ch test WAV as reference. Regards, Oki

17th July 2005, 01:37	#5 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 7,471	The correct order for BeLigth (bsn encoder) is: FL, FR, C, LFE, SL, SR This order is also the defect for Faac. If you use aacenc32 the order is: C, FL, FR, SL, SR, LFE

18th July 2005, 01:51	#10 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 7,471	I use Belight 0.2.2b4 with Nero (6.6.0.1) aac plugin. I take the 6_Channel_ID.wav (Oki) renamed to L_R_C_LFE_SL_SR.wav (to identify the channel order) and make the next conversions with Belight: L_R_C_LFE_SL_SR.wav -> Correct.mp4 L_R_C_LFE_SL_SR.wav -> Wrong.ac3 L_R_C_LFE_SL_SR.wav -> FL.wav, FR.wav, ..., SR.wav L_R_C_LFE_SL_SR.mux -> Correct.mp4 L_R_C_LFE_SL_SR.mux -> Wrong.ac3 L_C_R_SL_SR_LFE.mux -> Correct.ac3 L_C_R_SL_SR_LFE.mux -> L_C_R_SL_SR_LFE.wav L_C_R_SL_SR_LFE.wav -> Correct.ac3 Correct.ac3 -> Correct.mp4 Correct.ac3 -> L_R_C_LFE_SL_SR.wav Correct.ac3 -> FL.wav, FR.wav, ..., SR.wav With Foobar: Correct.mp4 -> L_R_C_LFE_SL_SR.wav With Faad: Correct.aac -> L_R_C_LFE_SL_SR.wav With Faac: L_R_C_LFE_SL_SR.wav -> Correct.aac With aacenc32.exe C_L_R_SL_SR_LFE.wav -> Correct.aac

18th July 2005, 10:34	#12 \| Link
AlexeyS Registered User Join Date: Jan 2005 Posts: 437	I've muxed this file with BeLight. Is channel order right on your 5.1?

18th July 2005, 17:03	#13 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 7,471	Is wrong. Your C channel contents dialogs. OK Your L channel maybe a L or R Your R channel maybe a L or R Your LFE channel maybe a SL or SR Your SL channel maybe a SL or SR Your SR channel contents LFE sound You can verify this with: sample.mp4 -(foobar)-> L_R_C_LFE_SL_SR.wav -(Belight)-> FL.wav, FR.wav, ..., SR.wav And listen each channel.

18th July 2005, 17:06	#14 \| Link
AlexeyS Registered User Join Date: Jan 2005 Posts: 437	Check out audio.mp4 please which is above your last post.

18th July 2005, 17:21	#15 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 7,471	Sorry, I take your first sample audio.mp4 is wrong only for this: SR <-> LFE