When recording sound on your device, there are several ways unnecessary noise can creep into your clips. Fortunately, the pre-installed Voice Memos app on your iPhone or iPad can clear up background noise and echoes with a single tap. How to use it.
Apple introduced Enhancing Recording in the Voice Memos app with iOS 1
Now launch the “Voice Memos” app. Use Apple’s built-in Spotlight search if you can’t find it on iPhone’s home screen or App Library.
Select the voice recording you want to edit. When open, tap the three-point menu icon on the left side of the screen.
Select the “Edit Recording” button in the following menu.
Touch the wand-like icon at the top left.
In seconds to a minute, depending on the length of the recording, the Voice Memo app will process the sound to automatically “reduce background noise and reverberation.” When done, the button is highlighted.
Play the recording to preview the changes. If you are satisfied, press “Done” to save the changed clip.
By default, the Voice Memos app overwrites the original audio file. To save the changes as a new separate clip, you can create a duplicate before using the “Enhancing Recording” filter.
To do so, open the audio clip and then tap the corresponding three-point menu icon. This time, select “Duplicate” instead of “Edit Recordings.”
The app will immediately create and add a duplicate of the original audio file to the list of recordings. It will have the same title with a “copy” added behind it. You can rename a file by tapping it once to reveal options and then selecting the name to edit it.
Because Enhancing Recording relies on automated algorithms to separate noise and echo from sound, it will not always deliver accurate results and can be a hit or miss.
In addition to using the Enhanced Recording feature, you can consider recording audio in a Lossless format, which will take up more storage space but produce richer quality.