Re: [Alsa-user] Knoppix hdd install - Audacity/K3b sound issues

[Bill U. <un...@ph...>]

On Tue, 24 Feb 2004, Casey Heshler wrote:
> 
> (1) Using Audacity, I've created, both a oog, and a wav, file formats - 
> initial 45 minute tape extraction, edited that file - both oog and wav - to 
> strip to individual speaches - then using K3b, burned the oog, and also the 
> wav "tracks" to a Audio CD.
> 
> PROBLEM:
> Upon trying to play the K3b Audio CD, the pitch of the speaker is way lower 
> than it should be, like they were talking in slow motion.

It sounds like a rate problem. How did you sample the tape output to
digitize it? It sounds like you used too high a rate. You must use
44100, not 48000 (which is the only speed possible on some of the
soundblaster audio cards) or 96000. 
Alternatively, you have a stereo file which is being played as mono. (or
you recorded it in stereo, thought you had recorded in mono and told the
system to produce a stereo output which is what cd burners require).

> 
> I have tried using oog through the complete process, till I burned it to the 
> cd, and the same with wav - both file formats appear to create a Audio CD 
> with these same results. What it sounds like is, if a male speaker is 
> talking, their voice is lowered, and slowed down, like if they were a 
> suprano, they sound like a bass.
> 
> I have tried playing the cd through XMMS and KsCD, same results - but if I 
> save the wav/oog file in Audacity, and reload it, after using the form of 
> export "format", the loaded file sounds fine.
> 
> I have tried everything in Audacity as far as settings - prefered settings are 
> what I used in Windows - 44.1KHz 16 bit PCM. though at the start I had tried 
> using the defaults, which was 32 bit float 44.1KHz. Oog compression was at 
> mid-point - 5, but that doesn't really mean much considering I also did a wav 
> format, and that is uncompressed.
> 
> I tried other editor/creation software that I had obtained: ReZound, and 
> Ardour GTK - but ReZound screams about a OOS something having an error, and 
> Ardour appears to want to deal only with internet streaming.
> 
> I need to get my business work done here, and so far, I have only wasted two 
> days, with customers beating down on my back, and nothing to show for it.


> 
> Where is the problem, why does everything run great, sound great, until I burn 
> it to a cd? Digital is digital right? How can something that sounds fine get 

No digital is digital at variable rates and variable number of channels.
Ie, a .wav file can be at any speed and any number of channels.

By the way, for simple editing I found gcdmaster as good as anything. It
allows you to select portions, put in track marks, etc, is extremely
fast ( it does not actually edit, is simply gives directions as to which
part of the file to use for what). If you want to change samples (fade
in fade out, remove clicks, etc,) then it does not do that. But if you
simply want to remove, rearrange, put in track marks, etc, then it works
great. 
You just need an intitial .toc file which can be as simple as 

CD_DA
// Track 1
TRACK AUDIO
NO COPY
NO PRE_EMPHASIS
TWO_CHANNEL_AUDIO
FILE "output.wav" 0:0:0

to load the file, and then edit away. 

> so screwed up (digitally) after it is placed on a cd? Does K3b change digital 
> bits when it burns? Has anyone had this problem, and if so, how was it 
> resolved?
> 
> I have an Optirite CD-RW - 52x32x52 - detected exactly by both Knoppix/Debian, 
> and by K3b - I didn't "overburn", and I stayed below the recommended "write" 
> speed of the cd's I am using.
> 
> I have a AMD 1.7 GHz, 512 RAM, 41 gig hard drive, w/ 500 meg Swap - more than 
> 21 gig free space on the file system hard drive, and Knoppix hard drive 
> installed v3.3
> 
> Any assistance on getting my business back on "working" order again, will be 
> greatly appreciated,
> Cuddles
> 
> ... Completion of included post...
> 
> Sorry, I didn't want to retype all of that again, and I think I wouldn't have 
> been able to get all the "data" the same as the original post, here...
> 
> I should also note, I don't think I am using ALSA within Knoppix/Debian, I 
> never set it up, or activated it. From what I know, I am using ArTS, or some 
> capitalization of this. I just need help, and the reply I got from the above 
> post was: "that maybe you guys in the ALSA support arena, may know something, 
> or have dealt with the issue, either identical, or closely related, and may 
> be able to get me some help."
> 
> I would greatly appreciate ANY help on this, my bussiness is at a stand-still 
> currently, due to the voice playback problems.
> Thanks,
> Cuddles
> 
> 
> 
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William G. Unruh   |  Canadian Institute for|     Tel: +1(604)822-3273
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