Tuesday, March 12, 2013

How to Change the BPM of a Song

Changing the BPM, or beats per minute, of a song can be accomplished using an audio editor. There are free and commercial audio editors that will help you complete the task. Audacity, Cakewalk and Peak Pro are all audio editors that make it possible to modify the beats per minute. Beats per minute refers to the total number of beats in a minute of music. As will all beats, they are equally spaced in time. For instance, a piece that is 60 beats per minute will have one beat per second. While a piece that is 120 beats per minute will have 2 beats per second.

Step 1

Install and initiate your audio editing program. Drag the audio file you would like to modify into the main editing pane. This will import your file and prepare it for editing. The editing pane typically has numbers at the top, like a ruler, that indicate where each second falls in the piece.

Step 2

Select the entire audio file by double-clicking the imported wave file. The entire audio file should change color to indicate that you have highlighted it. You may also select the "Edit" menu and then click on the "Select All" option.

Step 3

Open the "Effect" drop-down menu and select "Change Tempo." If you know the beats per minute of the current song, enter that number into the first box under the option "Beats Per Minute" then enter the new value in the second box. If you don't know the beats per minute of the song, use the slider option to change the tempo by a percentage.

Tips

To find the beats per minute of a song, use a stopwatch. Start the music and begin tapping the beat of the song. Start the stopwatch and count the number of beats that occur over 10 seconds of time. Multiply that number by six to get the total beats per minute for the song.