[LAD] Undeliverable mails for Rui

[Ralf Mardorf]

Hi Rui :)

after it failed to send the wanted test to you, because of it's length, 
I'm blocked :D.

Sorry LAD list, Rui is waiting for this test and I don't know how to 
reach him, while I'm blocked.

Cheers,
Ralf

System Administrator wrote:
> Your message
>
>   To:      Rui Nuno Capela
>   Cc:      qtractor-devel at lists.sourceforge.net
>   Subject: Re: Sound quality of audio recordings at 96 Khz/ 24 Bit
> internal Linux - b4: Re: [solved] 'offset/ note length' issue
>   Sent:    Tue, 20 Oct 2009 02:47:02 +0200
>
> did not reach the following recipient(s):
>
> rncbc at rncbc.org on Tue, 20 Oct 2009 02:47:26 +0200
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>
> Subject:
> Re: Sound quality of audio recordings at 96 Khz/ 24 Bit internal Linux 
> - b4: Re: [solved] 'offset/ note length' issue
> From:
> "Ralf Mardorf" <ralf.mardorf at alice-dsl.net>
> Date:
> Tue, 20 Oct 2009 02:47:02 +0200
> To:
> "Rui Nuno Capela" <rncbc at rncbc.org>
>
> To:
> "Rui Nuno Capela" <rncbc at rncbc.org>
> CC:
> <qtractor-devel at lists.sourceforge.net>
>
>
>
> > Qtractor didn't show the waveform for the brown noise recording
> > completely, I don't know the reason why and I never had this bug or
> > user error before
>
> After closing and launching Qtractor again and loading the recent file,
> Qtractor showed the complete waveform. While I unmuted pink noise
> Qtractor crashed (auto-closed).
>

-------- Original Message --------
Subject: 	tar.gz including the sound quality test is to long
Date: 	Tue, 20 Oct 2009 02:55:21 +0200
From: 	Ralf Mardorf <ralf.mardorf at alice-dsl.net>
To: 	Rui Nuno Capela <rncbc at rncbc.org>
CC: 	qtractor-devel at lists.sourceforge.net



Your message

 To:      Rui Nuno Capela
 Subject:  Sound quality of audio recordings at 96 Khz/ 24 Bit internal
Linux

did not reach the following recipient(s):

rncbc at rncbc.org on Tue, 20 Oct 2009 02:36:57 +0200
   This message is larger than the current system limit or the
recipient's mailbox is full.  Create a shorter message body or remove
attachments and try sending it again.

It's the same for the dev list.

The tar.gz is < 13 MB. Here is the mail without the attached archive:

-------- Original Message --------
Subject: 	Sound quality of audio recordings at 96 Khz/ 24 Bit internal Linux - b4: Re: [solved] 'offset/ note length' issue
Date: 	Tue, 20 Oct 2009 02:31:51 +0200
From: 	Ralf Mardorf <ralf.mardorf at alice-dsl.net>
To: 	Rui Nuno Capela <rncbc at rncbc.org>
CC: 	qtractor-devel at lists.sourceforge.net

Hi Rui :)

first I got some noise references.

spinymouse-sudo at 64studio:/usr/src/qtractor/noise$ wget 
http://upload.wikimedia.org/wikipedia/commons/6/66/Whitenoisesound.ogg 
http://upload.wikimedia.org/wikipedia/commons/6/6c/Pink_noise.ogg 
http://upload.wikimedia.org/wikipedia/commons/c/c9/Brownnoise.ogg

Then I set the CPU frequency scaling to "Performance" and launched JACK 
and after JACK I run Qtractor.

spinymouse-sudo at 64studio:/usr/src/qtractor/noise$ jackd -Rdalsa -dhw:0 
-r96000 -p512 -n2 -Xseq
spinymouse-sudo at 64studio:/usr/src/qtractor$ qtractor -v
Qt: 4.4.0
Qtractor: 0.4.3.1409
spinymouse-sudo at 64studio:/usr/src/qtractor$ qtractor

I Imported the three noise.oggs.

Qtractor didn't show the waveform for the brown noise recording 
completely, I don't know the reason why and I never had this bug or user 
error before, but it's also the first time I used 0.4.3.1409. I tried to 
record it 2 times.

I did stereo recordings for the mono clips too, because this shouldn't 
cause any changes for the audible result.

Okay, a completely new problem occurred. There's an audible loss for the 
quality of the sound, but in this case because of an understandable 
reason. The .ogg files are to loud with faders set to +- 0 db. The 
important thing with this is, that the loss of the sound quality for the 
white noise is comparable with the kind of loss I've got when doing a 
recording of music, even if the maximal signal level is under -3 dBFS. 
So it doesn't matter if the meters are Full-Scale Square wave or 
Full-Scale Sine Wave meters. Anyway, I wonder where the boost is from. 
When I recorded music by connecting Qtractors outputs to its inputs 
both, source clip and target clip were 96-24-stereo.wav files. There 
never was a visible difference for the volume.

Before I go on comparing music recorded by Qtractor and Audacity, I want 
some information because of the strange level for the .ogg files from wiki.

The qtractor session is attached as tar.gz. I suppose you'll have a 
directory /usr/src/qtractor too, thus you just need to add a directory 
/usr/src/qtractor/noise.

spinymouse-sudo at 64studio:/usr/src/qtractor/noise$ ls -l
total 17716
-rw-r--r-- 1 spinymouse-sudo src  155775 2006-10-27 00:24 Brownnoise.ogg
-rw-r--r-- 1 spinymouse-sudo src    8604 2009-10-20 02:21 noise_test.qtr
-rw-r--r-- 1 spinymouse-sudo src 5844866 2009-10-20 01:51 
noise_test_qtr-Recorded_brown-1.wav
-rw-r--r-- 1 spinymouse-sudo src 5884802 2009-10-20 01:45 
noise_test_qtr-Recorded_pink-1.wav
-rw-r--r-- 1 spinymouse-sudo src 5890952 2009-10-20 01:44 
noise_test_qtr-Recorded_white-1.wav
-rw-r--r-- 1 spinymouse-sudo src  161738 2005-07-01 04:36 Pink_noise.ogg
-rw-r--r-- 1 spinymouse-sudo src  130717 2006-10-27 00:09 
Whitenoisesound.ogg
spinymouse-sudo at 64studio:/usr/src/qtractor/noise$ tar czf 
~/Desktop/noise_test_qtr.tar.gz *

Cheers,
Ralf