Hello,
I know I am too late to answer this question but I just got some ways to normalize audio, so I’d like to post here for benefiting more friends. I am using Audacity instead of DP 3, the steps are the below:
1. Open Audacity, click “Open” under File table, and then hold Ctrl to select the audio files you want to import, or simply drag and drop all the audio files to the main interface.
2. Press “Ctrl + A” to select all imported audio files, click “Effect” on the menu bar, and then select “Normalize”.
3. Check Normalize maximum amplitude to, type the desired volume level into the “dB” box. Click OK to start to normalize audio.
4. After done, click “File” again and select “Export Multiple”. Finally, set export format and location, and hit the Export button to start saving.
I copied some words from
http://www.videoconverterfactory.com/ti ... audio.html, if you are interested in this topic, you can search it too. Hope useful, my dear