Subject:how to acidize a file coming from a cdda CD?

Posted by: jam

Date:8/2/2003 9:49:22 AM

Hello,
a friend of mine, whom works with me on some projects, sent me a cd with nice wav files on it to use in one of our new song. The problem is that it appears on my cd as track01.cda.
If I drag and drop this file into acid (version 4.0e) beatmapper is launched and ask me to process the file. If i let the whole manipulation dod by beatmapper wo=ithout changing some parameters, tempo generated is like 88.578 bpm. I beleive such a tempo can not be used correctly.
So my 2 questions are:
1/ how to manage to have a usable tempo?
2/ how can I creat a wav acidized file in acid to be used like I want (loop, one shot or beatmapped)?

Regards,
jam

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: mortalengines

Date:8/2/2003 10:22:30 PM

If you don't like the tempo that it comes out at when you paint it across your grid, you can adjust the tempo to whatever by clicking on tempo with your mouse & if I remember correctly you can do the same thing at the onset when the beatmapper window is open as far as doing that to individual sections, if not you can set markers & note tempo changes wherever you want them-
I know that extracted audio can be a pain to work with in its beatmapped form- what I also do sometimes is cut up the extracted file into loops in the chopper window- this seems to "acidize" them & makes them much easier to work with - I am just getting the hang of this myself & am interested to see other/better articulated replies than the one I just gave but, I hope this helps all the same.

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: jam

Date:8/3/2003 5:28:52 AM

Thank you mortalengines!
Your words answer partally my questions. I beleive there is a way to create an "real" acid wav file. I'm sure some editing have to be considered also, but a part of the job should be dedicated to acid.
I hope like you someone will bring a more complete response.
Regards,
jam

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: RasKeita

Date:8/3/2003 7:06:24 PM

There are a couple tools I employ.

http://www.spacetaxi.de/sf/waveknife.html

http://www.sonicfoundry.com/Products/showproduct.asp?PID=668

An Audio Editor is a must have tool.
If you don't have one you can alter the properties, right click(track list)>choose properties>stretch>alter the number of beats.
I hope this is what you're asking

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: jam

Date:8/4/2003 9:10:35 AM

Thank you RasKeita!
I do have already an audio editor.
Once edited and precisely cut, wav files still are NOT acidized (I mean, able to be use directly as loop wav file, within a tempo). i beleive I have to do it with Acid, but i don't understand how I can do it.
Maybe with my audio editor I can add tempo info. i'll see.

Regards,
jam

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: dkistner

Date:8/7/2003 10:54:28 AM

The gurus here would be better to answer this because I don't do a lot of acidizing of loops. But if I remember correctly, all you have to do is get your waves properly trimmed for looping in your editor, then bring them into Acid and export them as loops (or maybe it was render, to separate files). Anyway, they get automatically acidized that way. Be sure to set up your project properties like you want them first, though.

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: jam

Date:8/7/2003 1:26:44 PM

Thank you dkistner!

I think it will be easy as you mention it.
I'll work within my audio editor first to get proper wav files.

Regards,
jam

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: Iacobus

Date:8/8/2003 3:19:44 PM

As Diane noted, there are a couple ways to ACIDize your samples.

One of the easiest ways is to solo your respective track and then set the Loop Region over the area you'd like to ACIDize and make into a Loop. Then use CTRL+M and use the "render loop region only" option. Note that in order for the sample to be ACIDized into a Loop, your sample should be 30 seconds or less by default.

This can be changed via the Audio tab under Options>Preferences on the menu bar. (Change the rightmost field under the "Open files as loops" option. You can open a sample as long as 300 seconds or 5 minutes as a Loop. Be careful, however. Loops are always loaded into RAM.)

If you use the above technique, your samples should be embedded with the key and tempo info of the project, so if you have a project that's in the key of C with a tempo of 125 BPM, then your newly ACIDized sample will have the same info.

You can also use Sound Forge to ACIDize, but that gets a lot more complicated depending on what you want/need, but it's not so bad once you understand the concept.

HTH,
Iacobus
-------
RodelWorks - Original Music for the Unafraid
mD's ACIDplanet Page

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: L25

Date:8/8/2003 10:54:59 PM

a bit off topic but a good blast from the past post

http://www.sonicfoundry.com/forums/ShowMessage.asp?ForumID=1&MessageID=79697

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: jam

Date:8/9/2003 9:52:51 AM

One word: THANKS!
non, two more: VERY MUCH.

Explanations are really clear and should offer me the opportunity to get the result files I want/need.

Regards,
jam

Subject:RE: how to acidize a file coming from a cdda CD?

Reply by: Iacobus

Date:8/9/2003 12:06:10 PM

In addition to Rockitglider's post, take note that when creating loops via an editor such as Sound Forge, tempo is correlated to time.

For example, if you make an exact four beat selection in Sound Forge, Sound Forge's ACID Loop Creation Tool's toolbar should tell you the tempo the sample (and the song itself) is at. (This is all assuming the song itself has four beats to a measure.)

You should always use this gauge and Sound Forge's Edit Tempo tool (which is just a monitoring tool; it does not change the sample in any way) to determine tempo for ACIDization. If a four beat selection is telling you the selection made is 120 BPM, then that's what the tempo will be if you use Sound Forge's Edit ACID Properties tool and set the number of beats to 4.

When you bring this sample into ACID, ACID will simply report the loop as being 4 beats at 120 BPM. It will stretch accordingly to fit the ACID project's tempo. Be aware that artifacting may occur, especially if the ACID project's tempo is much slower than the Loop's ACIDized tempo. You may want to go into the properties of the Loop and adjust/add stretch markers if this is the case.

Since the ACID Looping Tools toolbar bases its tempo calculations on a 4 beat selection, it can be misleading. Be ready to do some basic math.

For example, if you make an 8 beat selection, then the ACID Looping Tools toolbar will report a tempo that's been halved. Simply double it to get the real tempo. Likewise, if you make a 2 beat selection, the toolbar will report a tempo that's been doubled. Simply halve it to get the real tempo. (This is where the Edit Tempo tool comes in handy as well.)

In summary, be sure you tell the Edit ACID Properties tool the correct number of beats for the sample to be turned into a Loop so that the tempo is correctly noted when ACIDized.

HTH,
Iacobus
-------
RodelWorks - Original Music for the Unafraid
mD's ACIDplanet Page