DIY Audio Test DVD - AVS Forum
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post #1 of 300 Old 10-29-2006, 03:28 PM - Thread Starter
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EDIT
12-19-08
There has been a new development.
There is now a self-extracting rar of the ISO that clocks in at only 202 MB!
Say thank you to jarrod1937. He has offered to host the file own his own bandwidth for a time.

My connection is no good right now (crappy line noise), but if someone would be kind enough to grab the rar and start a new torrent that would be great. Here is a link to jarrod1937's file: http://jarrodchristman.com/AudioTestDVDv2.exe


-The link to the old (803 MB) torrent is right here.



Thank you swithey, 80211mdr, J. L., and blown65 for the help in getting this out there.

EDIT: The FTP option is no longer available, sorry. You can go to http://www.imgburn.com/index.php?act=download to download the free ImgBurn program to burn the iso for you though. Please skip on down to the next section, unless you just want to learn a little about FTP file transfers.

FTP-How-To (the free way)
First PM Zip(AUS) or Nada(USA), and ask to gain access to the ftp site location and pass codes. Remember to thank them.
Please keep the username and password he gives you to yourself. It is a free service to you and that is the only rule. Please remember it.
Next download this program FileZilla Pick the latest .exe
This is what it looks like.

All you have to do is enter the address, username, and password you got from swithey and then hit Quickconnect.
Now the Local Site on the left is where on your computer you want the files saved to. The Remote Site is the FTP server.
First go into the ImgBurn folder to get a program (SetupImgBurn_2.1.0.0.exe)to burn the DVD .iso Click the ".." file to go back out a level, to get back to the main menu. You should now be able to move around and download whatever you choose to from the site.

Once you are ready to burn the .iso, start the ImgBurn program

It is pretty straight forward, and you should have no problems. In the Source box, click the folder icon with the magnifying glass and find the .iso you want to burn. Now just place a DVD in your burner, and click the big disk picture that lights up. That's it, you're done.

The LFE calibration is for a sub good to at least 100hz. If your sub naturally rolls-off earlier than that, you use a lower LFE xover point, you don't have LFE and sub xover points on your AVR, or you don't use it's xover bypass use the 2.0 Sub cal. Trust me.
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post #2 of 300 Old 10-29-2006, 03:46 PM
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You are a saint Soho! This will be extremely valuable in making sure my sub is set up properly.
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post #3 of 300 Old 10-29-2006, 03:47 PM - Thread Starter
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A little more...

I'm looking at Dolby Digital 448 Kbps, 48,000 Hz, 5.1 Surround. I don't have any DTS encoders. Now the question is where do you want the LFE lowpass? 180, 120, 116(DTS), or 80hz? There is also a no lowpass option. I'm thinking 120hz, but it lists it as Pro/film with 80hz as consumer/DVD.

One other thing, are 5 sec sine wave tones good? Do you want them shorter or longer?

They can be on a loop with 3 sec of silence, or just repeat 3 or 4 times and then end.

What else should be on here?
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post #4 of 300 Old 10-29-2006, 04:25 PM
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Dunno about the lowpass


I'd prefer a longer sine wave..maybe 10 seconds?
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post #5 of 300 Old 10-29-2006, 04:39 PM
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I'm curious as to why you'd have the tones at -20db and the sweeps at -10db. Why not have them both at 0 or -1db? Also test tones around 10sec would be great!

One of the disks I have has sine waves at 3 different levels, 0, -5 and -10db for 30secs each. Pink noise is 60secs and it has a sweep from 1-180hz where each second equals the frequency...It's stereo though since it's an old CD and not a DVD.

YID DIY
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post #6 of 300 Old 10-29-2006, 04:40 PM
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Cool Soho! I think the LFE channel with no lowpass would be the most valuable. I think DD movies use a 120 Hz lowpass when recording but DVD-A and SACD don't have any standards and may not use any filter. For testing purposes, it would be good to see what your gear does with a full-range signal on the LFE channel. Most cut it off above the XO frequency you set but you never know what the various equipment mfrs are going to do.

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post #7 of 300 Old 10-29-2006, 04:57 PM - Thread Starter
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Quote:


I'm curious as to why you'd have the tones at -20db and the sweeps at -10db. Why not have them both at 0 or -1db? Also test tones around 10sec would be great!

I started this as a bass management test disk only. The thought was to have all tones and PN play back at 85db with sweeps at 95db for improved lowend audibility.

10sec tones it is. Now should they loop with a 3sec pause, or just play once?

Quote:


I think the LFE channel with no lowpass would be the most valuable.

No lowpass it is.

Quote:


a sweep from 1-180hz where each second equals the frequency

I can do things like this, but I am worried about the destuction it will cause.
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post #8 of 300 Old 10-29-2006, 11:18 PM
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Hey Soho54. What you doing is great. I been working on somethimg like this. Then I remember this site http://www.realmofexcursion.com I downloaded alot of these and put together a test cd.
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post #9 of 300 Old 10-30-2006, 06:29 AM - Thread Starter
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This is what I have done so far, and are available for all channels:

Sine waves- 5sec and 10sec tones with a 3sec pause. this repeats 4 times.
1-20hz in 1 hz increments 25-120hz in 5 hz increments -20db

Pink Noise- 30sec tones looped In 300-2000hz, 20-80hz, and 10-20,000hz bands -20db

Sweeps- In 10sec and 30sec-Both Forward and Reverse Individual Sweeps
10-80hz, 10-200hz, 10-20,000hz, 20-200hz, 20-20,000hz, 30-300hz -10db

I can do multi channel tests and phase inversions. What kind of stuff like that do you guys want to see?
I am going to add some 0db content for those who crave it.
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post #10 of 300 Old 10-30-2006, 06:35 AM
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Quote:
Originally Posted by soho54 View Post

This is what I have done so far, and are available for all channels:

Sine waves- 5sec and 10sec tones with a 3sec pause. this repeats 4 times.
1-20hz in 1 hz increments 25-120hz in 5 hz increments -20db

Pink Noise- 30sec tones looped In 300-2000hz, 20-80hz, and 10-20,000hz bands -20db

Sweeps- In 10sec and 30sec Forward and Reverse Individual Sweeps
10-80hz, 10-200hz, 10-20,000hz, 20-200hz, 20-20,000hz, 30-300hz -10db

I can do multi channel tests and phase inversions. What kind of stuff like that do you guys want to see?


Pink noise: Mains-center, mains-suround, surround-rear, mains-rear, mains-LFE

In phase/ out of phase: Mains-center, mains-suround, surround-rear, mains-rear, mains-LFE
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post #11 of 300 Old 10-30-2006, 06:37 AM - Thread Starter
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crackyflipside, the full calibration suite with extras. No problem.
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post #12 of 300 Old 10-30-2006, 06:38 AM
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It'd be cool if you could include Brittany Murphy somehow. And Pink. Yeah, that'd be a disc to have.

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post #13 of 300 Old 10-30-2006, 06:39 AM - Thread Starter
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post #14 of 300 Old 10-30-2006, 03:59 PM - Thread Starter
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This menu is getting to be a nightmare. It's going to take a month at this rate.

I think I'm going to drop the 5 second tones, and only have the 10sec ones. Any objections? That should free up a week or so.

I found another sine generator for sub 10hz sweeps, but it puts an edge on the wave. I don't like it. I'll leave one on there though.

Anyone have any copyright free (bass heavy) music or sound effects that can be added for giggles. I have tons of space to waste. This DVD could fit on a CD.
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post #15 of 300 Old 10-30-2006, 07:33 PM - Thread Starter
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Here is the menu system so far. This is as deep as the levels on the DVD go. The norm seems to be about 5, this is 7. The wave is playing in the last pic, at -20db. The 5.1 section will be similar.

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post #16 of 300 Old 10-31-2006, 08:46 PM
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If you need help, I have a program that can generate ANY audio you could imagine up to
192000 sample rate (stereo) 32-bit

It can also generate Pink noise, and two others I have never heard of (white noise and brown noise)

Also generate any pefect sine waves or sweeps you can imagine, but just in 2-channel.
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post #17 of 300 Old 10-31-2006, 09:08 PM - Thread Starter
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Quote:


If you need help, I have a program that can generate ANY audio you could imagine

The one I am using can only do sweeps to 10hz. I have tried a few different programs that could dive below 10hz, but none of them created a perfect sine wave. I'm trying to stay with true sine waves, with out the harshness you get from the car audio forum tones. A 48000/16or 24bit/mono sweep from 1hz to 80hz over a 30sec period would be great.

Pink, white, and brown noise I have covered. White noise is random with a flat spectral density, pink has a 3db/octave roll off as frequency increases, and brown rolls off at 6db/octave. White noise is that crap noise an old CRT tv made when it was showing "snow."
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post #18 of 300 Old 10-31-2006, 09:13 PM - Thread Starter
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cracky I forgot to say, "Thank you for the offer and help. "
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post #19 of 300 Old 11-01-2006, 06:02 AM
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Sure thing, what level do you want it recorded at -20db or -30???
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post #20 of 300 Old 11-01-2006, 06:34 AM - Thread Starter
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Anywhere between -20db and -5db. I'll adjust it in the final mix to -10db and 0db. Just make it a strong signal with no clipping, and it will do fine. Thanks.

The part that is taking up all my time is doing the menu layout. This is going to be menu driven and there is going to be around 6245 screens at last count, and I have already cut 4000 pages out for the v1.0 release. I am going for easy of use, not design. I don't know who came up with the DVD menu system, but it sucks.

I'm almost through with the 2.0 section. Once that section it is done I'll start some non-computer testing. Then when the bugs are gone I'll finnish the 5.1 section and distribute. The only problem is the wife is already starting to complain about my time on the computer, so I'm going to have to turn it down a notch.
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post #21 of 300 Old 11-01-2006, 08:56 AM
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Right On! Looking forward to it.
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post #22 of 300 Old 11-01-2006, 08:58 AM
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Quote:
Originally Posted by soho54 View Post

. The only problem is the wife is already starting to complain about my time on the computer, so I'm going to have to turn it down a notch.


Tell her this is for the greater good of humanity
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post #23 of 300 Old 11-01-2006, 09:16 AM
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Quote:
Anyone have any copyright free (bass heavy) music or sound effects that can be added for giggles

Some, I repeat - some - of these are pretty good. Others are extremely boring. The car chase is good, and there is one that explains surround sound by using a bunch of examples (like guys playing tennis in your surround channels) that is good too - I forget what the title of that one is. There is also a calibration file which can be played in DTS - useful for making sure your DTS LFE is as it should be, as some older receivers didn't properly boost the DTS LFE by 10db.

When I get home I can take a look at the ones I have and let you for sure which are the good ones. Or you can just try them all for yourself if you want. That will take some time to dl and burn them though.
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post #24 of 300 Old 11-01-2006, 09:33 AM - Thread Starter
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almstsobur, thanks for the interest.

SteveCallas, thanks I'll check them out.
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post #25 of 300 Old 11-01-2006, 09:54 AM
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Ok, the 1-80hz sweep is done and I saved it as a windows PCM wav file.

PM me with your email.

Do you need any other sines?
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post #26 of 300 Old 11-01-2006, 10:08 AM - Thread Starter
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PM sent.

There is a list somewhere in this thread of what I have done already. Please feel free to send anything you see missing.



This is being done for everyone who wants it, so if anyone can think of something they would like to see on the disk please speak up.
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post #27 of 300 Old 11-01-2006, 12:13 PM
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Sent the email a while ago I just didn't get any response.

If you need any other sines just ask me.
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post #28 of 300 Old 11-01-2006, 02:38 PM - Thread Starter
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I just got home, and tested the wave. It was great. Perfect form, and only a little db wabble at 1-3hz.

Can you do logarithmic sweeps instead of linear ones?
Log sweeps from 1-60, 1-80, 1-120hz would be great.

If you can only do linear another one at 1-40hz would be great. Thanks, this really helps fill in my bottom end testing.
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post #29 of 300 Old 11-01-2006, 03:28 PM - Thread Starter
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SteveCallas, these 5.1 clips seem to be a .wav rip from a digital output jack. The horror. From what I can tell they only work while playing in a DVD player hooked up to a receiver, with the appropriate decoder onboard, through a digital connection(toslink/coax) correct?

People using analog cables are out of luck, correct?

I can't find the tennis one.
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post #30 of 300 Old 11-01-2006, 05:00 PM
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FWIW, warble tones can be useful. If the warble is fast enough, they can reduce/prevent the influence of resonances in your room from affecting your readings. I've also found them helpful for doing relatively quick measurements of a broad range: since they cover a practically infinite number of frequencies between the upper and lower limits of the warble, you can take fewer readings and still feel like you've got the entire spectrum covered (or take the same number and feel like you've measured more completely).

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