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tfm
10th December 2002, 22:10
Hi,

I just created a little avi (DivX 5.0.2, AC3 5.1 384kbps, 48kHz) with "Front Left", "Front Right", etc. speech and test signals.
(560kB)

http://www.tfm.ro/ac3/

Try if you want to easy test/identify channels.


10x,
Daniel.

ToMmY
10th December 2002, 22:41
Does this file test the subwoofer, or just the 5 speakers??

tfm
10th December 2002, 23:20
Front Left - Front Right - Rear Left - Rear Right - Center - LFE (with 100Hz tone)


Daniel.

tfm
10th December 2002, 23:31
... if you don`t hear anything when -LFE- is on screen, ... your subwoofer don`t handle 100Hz tone.

NuclearFusi0n
11th December 2002, 13:06
thank you very much :)

tfm
11th December 2002, 17:31
Hi,

... i changed Presenter Voice (10x to Nicky), changed 1 kHz Tone for Moving Sound to Voice ... for better testing.

Daniel.

Slogra
11th December 2002, 23:03
Hey, nice test! Everything (including bass) seems to be alright with my setup. I've got an external Dolby Digital decoder so i used spdif out.

When i let the computer downmix the sound to stereo, the bass is totally gone, so maybe that is your problem, ToMmY...?
The pitch of the bass sound it quite high, so i think every speaker system can handle it.


And now a request for tfm :D

How about a real bass test where you let the sound slowly go from 100hz to ~20hz. That would be cool.

tfm
11th December 2002, 23:06
k, tomorow, but not from 20 to 120 ?
(LFE has cutoff filter at 120Hz ...)


Daniel.

Slogra
11th December 2002, 23:15
Sounds great to me! (i wasn't aware of the 120hz cutoff)

tfm
12th December 2002, 14:24
Hi,

- changed LFE 100Hz tone to 120-20Hz tones in steps of 5Hz.
- new size : 948kB, 33 sec.
- the new link is :

http://www.tfm.ro/ac3/



Daniel.

ookzDVD
13th December 2002, 09:42
@Daniel aka tfm,

The test clip is Awesome!
It's very useful for me, thank you for your great work.
I really apreciate that.

ChristianHJW
13th December 2002, 10:48
loading now .. thanks indeed, very good idea, extremely useful to test Vorbis 5.1 channel mapping ..

OvERaCiD23
13th December 2002, 19:47
nice. i've been wanting to check where the sound goes when my PC downmixes 5.1 to 2 ch (for places i play movies w/o DD receivers).