How to Add Silence to an MP3 Batch

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If you have a batch consisting of hundreds of MP3 files and want to edit every one of them, it can take hours or even days. For example, if you want to add silence to each MP3, you need to open it in an audio editor, add the silence and save the file. Depending on what editor you are using, this can take at least five minutes. To avoid losing time editing each MP3 file, you must use a tool that can add silence to the entire batch of MP3 files.

Backup the Audio Files

  • Go to the "Start" menu and click on the "Computer" icon to start the Windows file manager.

  • Navigate to the folder containing your MP3 files and press the "Ctrl" and "A" keys at the same time to select all of them.

  • Press the "Ctrl" and "C" keys at the same time to copy the files to the clipboard.

  • Navigate to an empty folder and press the "Ctrl" and "V" keys at the same time to paste the MP3 files. You now have a backup you can use in case something goes wrong.

Add Silence Using MpTrim

  • Open your favorite Web browser, and navigate to mptrim.com to download the mpTrim tool.

  • Click on the "mpTrim 2.13 (214KB)" link in the left menu, and save the archive on your desktop.

  • Right-click on the archive you just downloaded and select the "Extract Here" option from the resulting menu. A file named "mpTrim.exe" is created in the same folder.

  • Double-click on the "mpTrim.exe" file to start the tool.

  • Click "Options," and then click on the "Silence" tab.

  • Click once on the drop-down box in front of the "of Silence at the Beginning" option, and select how many seconds of silence you want to add at the beginning of the MP3.

  • Click once on the drop-down box in front of the "of Silence at the End" option, and select how many seconds of silence you want to add at the end of the MP3. Click "OK" to save the changes.

  • Click "Open," and use the resulting file browser to navigate to the folder containing the MP3 files.

  • Press the "Ctrl" and "A" keys at the same time to select all MP3 files, and click "Open." All files are processed automatically, and silence is added. Note that this process overwrites the old files. In case you are not satisfied with the result, use the backup you created earlier to restore the original MP3 files.

Add Silence Using WavePad

  • Open your favorite Web browser, and navigate to VideoHelp.com to download the mpTrim tool.

  • Click on the "Download (direct link)" link, and save the EXE file on your computer.

  • Double-click on the "wpsetup.exe" file you just downloaded, and follow the instructions on your screen to install WavePad.

  • Launch WavePad by double-clicking on the "WavePad Sound Editor" icon on your desktop.

  • Click on the "Tools" tab and then on the "Batch Converter" button.

  • Click on the "Add folder" button, and select the folder containing the MP3 files. Click "Next."

  • Click on the "Add" button to add a new effect to the batch. Select the "Insert Silence At The Start" effect, and click "OK." Repeat the process, and add the "Insert Silence At The End" effect. Both effects appear in the "Command List" section.

  • Double-click on the "Silence Time (ms) = 0" option and select how many seconds of silence you want to add, in milliseconds. For example, setting the silence time to "2000" adds two seconds of silence. Repeat the process for the second silence effect. Click "Next."

  • Leave the "Output File Format" and "Output Folder" settings at their default values and click "Finish" to add the silence to the batch of MP3 files.

Add Silence Using GoldWave

  • Open your favorite Web browser, and navigate to GoldWave.com to download the GoldWave tool.

  • Click on the "Download" link in the navigation menu and then on the blue "Download" button.

  • Save the file on your computer and double-click on it to start installing GoldWave. Follow the simple instructions on your screen to install the tool.

  • Launch GoldWave by double-clicking on its icon on your desktop.

  • Go to the "File" menu, and click "Batch Processing."

  • Click on the "Add Folder" button, and use the resulting file browser to select the folder containing your MP3 files.

  • Click on the "Process" tab and then on the "Add Edit" button.

  • Highlight the "Insert Silence" effect, and set the duration, in seconds, in the "Duration" box.

  • Click "Add," and the effect is added to the list of effects.

  • Click on the "Destination" tab. Click on the "Store all files in their original folders," "Overwrite existing files" and "Delete original files" radio buttons.

  • Click on the "Begin" button to add silence to the batch of MP3 files.

  • Photo Credit Polka Dot RF/Polka Dot/Getty Images
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