See time warping of FFT size and overlap in Goldwave. This method changes the audio rate by changing the sampling rate. Its characteristics are high processing speed and high quality of documents. The disadvantage is that the processed file will have a color shift, which is the same as speeding up the rotation of the CD. This method is recommended for machining with little speed change.

Download and install Jinbo, open Jinbo.

2. Turn off the controller and open the file to be processed.

We found a problem after opening it. The audio amplitude is too small, so we need to adjust the amplitude.

4. Click the button on the picture to change the volume and adjust it according to the actual situation.

5. Slide the slider, click OK, click the first play button to audition, or observe the amplitude, the maximum should be around 0.9.