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Subject:Beatmatching and Mixing tracks in SF or Acid?
Posted by: tokilicious
Date:7/10/2001 4:48:21 AM

Hello, I'm new to sound forge and acid. I understand the basic concepts of both of the programs. I'm attempting to put together a non-stop mixing but trying to get the beats to match perfectly is my primary problem. I checked out the FAQ in the help section and it did manage to get me through part of the process.

Here's what is said the the FAQ's

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Once the measure loops properly, go to the Special menu and choose Edit Tempo. The Start, End, and Length fields will show you what you have selected. There is no need to change these values or the Input format. The 2 important pieces of information are:


Selection Length in Beats
This control specifies the number of beats in the current selection. Changing this value will automatically change the Tempo in Beats per minute.
Number of Beats in a Measure
Use this control to specify the number of beats in a measure, when selecting a measure (e.g. 4 for most pop music out there).
Once you have the above values correct, you will have a value in the "Tempo in beats per minute" field. If it reads something like 240, you probably have the number in Selection Length in Beats set to be double that of the actual selection (i.e. 8 instead of 4). Once the settings are correct, press OK to assign the correct BPM to the file.

Now you need to repeat this process on the file with which you wish to match beats, to determine its tempo.

Now open the file with the lower BPM value. We will call this file B. You will speed up this file so that it will match the tempo of file A.


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------------->Here's where I ran into some problems...

Soundforge 5 does not have a Time Compress/Expand button how else could I go about doing this in soundforge 5?
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Select file B and launch Time Compress/ Expand from the Process menu. Adjust the value in the Final Length field until the Final tempo (in the lower section of the Time Compress/Expend window) is as close as possible to the BPM of file A under Final tempo. Use the Preview function to select the mode which sounds the best for the material you are Compressing or Expanding.

After you have changed the tempo of file B, save your changes. The beats of these two files should now match in ACID.

To mix these two files together using a crossfade, copy the edited file B to the clipboard (double click to select the entire file, then right-click and select copy). Drop the cursor on the end of file A at the spot you wish to overlap, right click and select either mix or crossfade, depending on how you want them to overlap and the transition to work. You may wish to use our Graphic Fade to tailor these overlapping sections before you mix them.

Author: Sonic Foundry






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