If you’re interested in recording audio on your MacBook, there are all kinds of ways to do it. There are a number of third-party apps that can record your voice, but macOS also offers several tools that you can use with no installation required.
Before you start recording, make sure whatever mic you’re using is on, connected, and working. The MacBook’s built-in microphones can record as well, but an external microphone may offer better quality.
In QuickTime, you can also adjust the volume control on the bottom of the window in order to hear the audio you’re recording.
You’ll see the recording pop up on the left side of the window. The file will automatically be saved with the name New Recording. There is an alternative — it will save as the name of the location where you made the recording if you select Location-based Naming in Preferencesand you’ve given Voice Memos location permissions.