Many netizens have installed GoldWave, a tool that is a good helper for audio processing. You can create various effects for audio, such as stereo. Here are the operating tips for setting up stereo with GoldWave. Friends in need, don’t miss it.
Open GoldWave
Then add the audio files to be set. You can drag the audio files directly into the software, or you can click [File] - [Open] in the upper menu bar to add
接着导入后点击上方菜单栏中的效果–立体声,可以看到在立体声中分为:声道混音器,最佳匹配,声像,消减人声,立体声居中这几个分类

Now in the channel mixer, you can mix, swap, invert or combine the left and right channels. Control the sound by changing the volume of the left and right channels

Best Match combines the maximize and match volume effects on stereo files to match/balance and maximize the left and right volume levels in the file. After processing, the left and right channels have the same average volume level, and at least one channel has full dynamic range.
Dynamically set internal balance and left and right channel panning to control panning effects.

Then we reduce the vocal by changing the channel cancellation volume and band-stop filter volume and range.

Come and learn the operation skills of GoldWave to set up stereo sound. It will definitely help everyone.