When you need to talk to someone in person while wearing headphones, the advanced built in voice recognition algorithms reacts to your voice and automatically pauses the music and enables TalkThru if you just speak. Music and ANC resume after the conversation is over. There is no need to pause the music manually or remove the headphones - start talking and let the technology do the rest. You can extend the duration of Smart Talk in the JBL Headphones app when no voice is detected.