Abstract: An electronic device includes N volume levels. The N volume levels include a first level and a second level. The first level corresponds to first volume. The second level corresponds to second volume. A difference between the first volume and the second volume is a first difference. The electronic device adjusts the N volume levels to M volume levels when a first condition is satisfied, where the M volume levels include a third level and a fourth level. The third level and the first level are a same level. The fourth level and the second level are a same level. The third level corresponds to third volume. The fourth level corresponds to fourth volume. A difference between the third volume and the fourth volume is a second difference.

Abstract: An audio processing method includes establishing a wireless connection between a wireless headset and an electronic device, and establishing a wireless connection between the wireless headset and a charging case. The charging case collects a sound signal, generates first audio data, and sends the first audio data to the wireless headset. The wireless headset performs audio effect processing on the first audio data to obtain second audio data. The electronic device sends third audio data to the wireless headset. The wireless headset performs audio mixing processing on the second audio data and the third audio data to obtain fourth audio data and plays the fourth audio data.

Abstract: A BLUETOOTH communications system includes a true wireless stereo (TWS) BLUETOOTH headset and a terminal device, where the TWS Bluetooth headset includes a first earbud and a second earbud. The terminal device controls the first earbud to collect a sound signal and the second earbud to play a sound signal. When an audio application on the terminal device is started, the first earbud collects a first sound signal, performs sound effect processing on the first sound signal to obtain a second sound signal, and sends the second sound signal to the second earbud. The terminal device sends accompaniment audio to the second earbud, and the second earbud performs audio mixing processing on the accompaniment audio and the second sound signal for playing.

Abstract: This application discloses a sound collecting method, an electronic device, and a system. The system includes a first electronic device, a left-ear TWS earphone, and a right-ear TWS earphone. In the method, microphones of the first electronic device, the left-ear TWS earphone, and the right-ear TWS earphone may form a first microphone array. When the first electronic device detects a user operation of starting video recording, the first microphone array performs sound collecting to obtain a joint microphone array signal. The first electronic device may perform noise reduction processing on the joint microphone array signal. According to the method, in a near field area of the first microphone array, a target sound signal can be enhanced, an ambient noise sound signal can be suppressed, and sound quality in a recorded video can be improved.

Abstract: An audio processing method includes establishing a wireless connection between a wireless headset and an electronic device, and establishing a wireless connection between the wireless headset and a charging case. The charging case collects a sound signal, generates first audio data, and sends the first audio data to the wireless headset. The wireless headset performs audio effect processing on the first audio data to obtain second audio data. The electronic device sends third audio data to the wireless headset. The wireless headset performs audio mixing processing on the second audio data and the third audio data to obtain fourth audio data and plays the fourth audio data.

Abstract: A BLUETOOTH communications system includes a true wireless stereo (TWS) BLUETOOTH headset and a terminal device, where the TWS Bluetooth headset includes a first earbud and a second earbud. The terminal device controls the first earbud to collect a sound signal and the second earbud to play a sound signal. When an audio application on the terminal device is started, the first earbud collects a first sound signal, performs sound effect processing on the first sound signal to obtain a second sound signal, and sends the second sound signal to the second earbud. The terminal device sends accompaniment audio to the second earbud, and the second earbud performs audio mixing processing on the accompaniment audio and the second sound signal for playing.

Abstract: A method includes displaying, by an electronic device, a first interface, where the first interface includes a recording button used to record a first song, obtaining, by the electronic device, accompaniment of the first song and feature information of a cappella of an original singer, starting to record a cappella of the user that is sung by the user, and displaying, by the electronic device, guidance information on a second interface based on the feature information of the a cappella of the original singer, where the guidance information guides one or more of breathing and vibrato during the user's singing.