To Silence a part of the MP3 File do the following.
Step 1 - Open File
At first, you have to open the MP3 or other audio or video file. To do that press on the "Open" button of the toolbar or select "Open" from the "File" menu.
You can also drag and drop the audio or video file to open it.
Step 2 - Select the part of the MP3 file which you want silence
Secondly, mark which part of the MP3 file you want to silence.
You can do this by selecting the part of the MP3 file's waveform.
Alternatively, if you know the start and end time or duration of the desired part, enter the start time, end time or duration
in the appropriate textboxes.
Step 3 - Silence
Now select "Silence"->"Selection to Silence" from the "Edit" menu.
Step 4 - Specify Output Format Settings
Press on the "Output Format" button to specify various output format settings or leave the default ones.
Step 5 - Get the Result
Lastly, select "Save Whole Clip" from the "Cut" menu to get the result file.
In case, you want only a part of the MP3 file, after selecting it, you can choose also "Cut Only Selection" from the "Cut" menu.
How to Generate Silence
To generate silence do the following.
Step 1 - Open File
At first, you have to open the MP3 or other audio or video file. To do that press on the "Open" button of the toolbar or select "Open" from the "File" menu.
Step 2 - Select the position where to generate silence
Secondly, select the position where you want to generate silence.
You can do this by clicking on the appropriate position on the waveform
or by specifying the desired position value after selecting "Go To" from the "Edit" menu.
Step 3 - Generate Silence
Now select "Silence"->"Generate Silence" from the "Edit" menu.
Then enter the desired amount of silence time to add and press "OK".
Step 4 - Specify Output Format Settings
Press on the "Output Format" button to specify various output format settings or leave the default ones.
Step 5 - Get the Result
Lastly, select "Save Whole Clip" from the "Cut" menu to get the result file.
In case, you want only a part of the MP3 file, after selecting it, you can choose also "Cut Only Selection" from the "Cut" menu.