TWS Earbud Role Segmentation for Voice Pickup and Monitoring
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Solution Overview
Problem
Current TWS Bluetooth headsets have limited functions and cannot meet user requirements for sound detail pickup and real-time in-ear monitoring, as they often have microphones far from the user's mouth and do not support the user's habit of holding a microphone during karaoke or similar activities.
Innovation Solution
A Bluetooth communication method that enables a TWS Bluetooth headset to operate in a first mode where one earbud is used for sound collection and the other for sound playback, allowing the user to hold one earbud closer to their mouth for better sound pickup and wear the other on the ear for real-time monitoring, with audio roles allocated based on user selection or wearing status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If both earbuds are worn on ears for traditional TWS usage, then wireless convenience is maintained, but sound detail pickup quality deteriorates due to microphones being far from user's mouth
Solution Approach 1:
The patent segments the TWS headset functionality by designating one earbud as primary (with microphone for sound pickup) and the other as secondary (for audio playback only). This segmentation allows the primary earbud to be held near the mouth for high-quality voice capture while the secondary earbud remains on the ear for convenient audio monitoring, resolving the contradiction between pickup quality and wearing convenience.
Solution Approach 2:
The patent applies local quality by equipping only the primary earbud with microphone functionality for sound pickup, while the secondary earbud focuses solely on audio playback. This localized functional differentiation optimizes sound detail pickup at the primary earbud's location (near the mouth) while maintaining overall system convenience through the secondary earbud's presence on the ear.
2Measurement precision
If microphones are placed far from user's mouth in traditional TWS headsets, then wearing comfort is improved, but sound detail pickup capability deteriorates
Solution Approach 1:
The patent segments the audio functionality between two earbuds, assigning microphone-equipped sound pickup to the primary earbud that can be held near the mouth, while the secondary earbud handles playback. This segmentation enables high-quality sound pickup without compromising overall wearing comfort, as the secondary earbud remains on the ear.
Solution Approach 2:
The primary earbud acts as an intermediary device that the user holds between their mouth and the terminal device during karaoke or voice recording. This intermediary positioning optimizes sound detail pickup capability by placing the microphone close to the mouth, while the secondary earbud on the ear maintains wearing comfort and provides audio monitoring.
3Measurement precision
If one earbud is designated for sound collection and held near mouth, then sound detail pickup is enhanced, but device complexity increases due to role allocation and communication protocols
Solution Approach 1:
The patent segments TWS headset functions into distinct roles: the primary earbud handles sound pickup and communicates with the terminal device, while the secondary earbud handles audio playback and receives audio from the terminal device. This clear functional segmentation simplifies the communication protocol by defining specific roles for each earbud, reducing the complexity of coordinating multiple microphones and playback paths.
Solution Approach 2:
The terminal device serves multiple functions: it acts as an audio source for the secondary earbud, receives audio data from the primary earbud, and performs audio mixing. This multi-functionality at the terminal device level reduces the complexity burden on the earbuds themselves, as the terminal device handles the complex audio routing and mixing operations.
4Adaptability or versatility
If real-time in-ear monitoring is implemented, then user requirement for karaoke applications is met, but audio processing complexity increases
Solution Approach 1:
The terminal device serves as an intermediary that performs audio mixing between the accompaniment audio and the user's voice captured by the primary earbud. This intermediary processing at the terminal device level enables real-time in-ear monitoring for karaoke applications without requiring complex audio processing hardware within the earbuds themselves, thus managing audio processing complexity effectively.
Data Source
AI summary
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.