Information applies to iPhones, iPads, and iPod Touch devices runningiOS 10and up.
Scroll down to thePlaybacksection and move theSound Checkslider toOn/Green.
These steps apply to an iPod with a Clickwheel.
Use the Clickwheel to navigate to theSettingsmenu.
tap the center button to selectSettings.
Scroll about halfway down theSettingsmenu until you findSound Check.
pick the iPod’s center button to turn onSound Check.
If you have aniPod Shuffle, you use iTunes to turn on Sound Check on the Shuffle.
Launch Apple Music or iTunes on your Mac or PC.
Click theMusicoriTunesmenu on a Mac and selectPreferences.
On Windows, selectEdit>Preferences.
Select thePlaybacktab at the top of the Preference window.
SelectOKto save the change.
TheApple TV 4Kand the4th generation Apple TValso support Sound Check.
Go to theSound Checkoption and nudge the remote control to toggle the menu toOn.
What Is Sound Check?
It’s designed to make listening to music a consistent, comfortable experience no matter what song is playing.
Songs are recorded at different volumes and with different technologies.
This is especially true of older recordings, which are often quieter than modern ones.
Because of this, the default volume of songs on your iPhone or iPod differs.
Sound Check is designed to fix that.
How Sound Check Works
The way Sound Check works is really smart.
It doesn’t edit music files or actually change their real volume.
Instead, Sound Check scans all of your music to understand its basic volume information.
Sound Check then calculates the average volume level of all of your music.
TheID3 tagcontains metadata, or information, about the song and its volume level.
you’ve got the option to return to the song’s original volume by turning off Sound Check.
