Problems editing wav files

[Pip]

I have been using audacity successfully for more than a year to add tracks to my .wav files. I then "export multitple" and use toast to create an audio cd - I am a mac user. All of a sudden the cds have horrible interference on them despite being made from clean original files that play fine in their original format. Can anyone tell me what might be the problem, please?

[steve]

Try checking your CD writer. Does it write data CDs OK? If you "Rip" one of the CD's, are there errors?

[kozikowski]

You left out the movie scene before the ones in your post.

"I got up this morning and turned on my USB turntable like I always do...."

Did I hit it?

My bet is you are capturing damaged sound files and because Audacity will try its best to deal with the damage--usually by hiding it--the damage doesn't show up until much later. You are capturing damaged sound files because a great many USB turntables produce instability in their computers.

Koz

[Gale Andrews]

My bet is you are capturing damaged sound files and because Audacity will try its best to deal with the damage--usually by hiding it--the damage doesn't show up until much later. Koz

Koz, I think I would take issue with the above - in what sense do you mean? If the recordings are passed to Audacity with USB transmission noise in them (for example), that's how they will play in Audacity. Upsampling to 32 bit (for example) to store the recordings internally cannot improve their quality.

Pip, obvious question too - what do the files sound like before you burn them? If they sound fine, then I've suggested on audacity-users where you raise the same issue, that it's possible you have changed the type of dither you are using:
http://n2.nabble.com/about-noise-added- ... 80080.html

However dither noise would not normally amount to what could be described as "horrible interference" so I am not sure this is the reason in your case. Koz has questioned the stability of 24 bit Mac audio here before, so you may want to consider that as a reason.

Gale