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Subject:Help! Weird noise when looping Wav?!
Posted by: peanutismint
Date:5/18/2004 8:53:41 AM

I imported a loop file i'd made in another audio editing program into ACID, only to find that when played in ACID it has some sort of weird high-frequency noise going on above the loop, as if it was encoded with some codec at low quality... I've listened to the loop in other programs, sounds fine. I tried encoding the loop to MP3 and using that in ACID, and that gets rid of the weird sound but it goes out of time, maybe something to do with ACID taking longer to read MP3s than WAVs? Anyone got any ideas? Thanks!

Subject:RE: Help! Weird noise when looping Wav?!
Reply by: Iacobus
Date:5/18/2004 11:53:52 AM

Is the sample ACIDized properly? (What other programs did you use to preview the loop?)

There is a bit of silence at the beginning and end of an MP3 file; it's inherent to the format and you can't get rid of it, which might explain why it sounds "off".

Iacobus
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RodelWorks - Original Music for the Unafraid
mD's ACIDplanet Page
Guitars 4 Kids

Subject:RE: Help! Weird noise when looping Wav?!
Reply by: peanutismint
Date:5/25/2004 4:24:02 AM

Hi, I used the sound editing program GoldWave to make the loop, I don't know what ACIDizing is, or how to do it, im a beginner, sorry! :) Could you help shed any light? Thanks!

Subject:RE: Help! Weird noise when looping Wav?!
Reply by: DKeenum
Date:5/25/2004 7:02:55 AM

What about making the wav in acid?

Subject:RE: Help! Weird noise when looping Wav?!
Reply by: JohnnyRoy
Date:5/25/2004 8:42:03 AM

ACIDizing is the process of adding the Beats Per Minute (BPM) information and Key so that ACID knows how fast to play it and how to transpose it. I don’t know if GoldWave can add this data to the wave file but Sound Forge XP can (and of course the full version of Sound Forge can as well). This may be the reason the wave isn’t playing correctly.

~jr

Subject:RE: Help! Weird noise when looping Wav?!
Reply by: Iacobus
Date:5/25/2004 11:18:21 AM

As JohnnyRoy mentioned, ACIDizing is the process of embedding a particular sample with data that app like ACID can read.

There are three different ACIDized forms: Loop, Beatmapped and One-shot. The first two types have tempo and/or key info embedded so that they time and/or key stretch properly to a given project's tempo and/or key. (Sorry for the "and/or"; I'm just trying to be thorough.)

One-shots do not have tempo or key info embedded but they're still an ACIDized form of sample; the file type is basically taken "as is" as far as ACID's concerned. One-shots are perfect for quick percussion hits, voice snippets or any other sample you don't want to have stretched by ACID.

If a sample is not ACIDized before it's brought into ACID, ACID will try to do this for you. ACID is somewhat good at doing this, but you'd be better off doing it yourself. ACID has no way of knowing what you may exactly want.

All things considered, you can have ACID ACIDize a sample for you by bringing the sample into your project, accessing the track properties and changing the track type to "One-shot". Then solo the track, set the Loop Region over the area you'd like to bounce down and use CTRL+M with the "render loop region only" option enabled.

Your newly rendered sample will, by default, turn into a Loop if between half a second to 30 seconds. Anything shorter than half a second will turn into a One-shot; anything longer than 30 seconds will turn into a Beatmapped track.

Iacobus
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RodelWorks - Original Music for the Unafraid
mD's ACIDplanet Page
Guitars 4 Kids

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