The sound delay of Bluetooth Speaker is affected by many factors. The following is a detailed introduction for you:
Bluetooth version: Bluetooth technology continues to develop, and version updates have an important impact on latency. For example, Bluetooth 5.0 and above versions have significantly improved transmission speed and bandwidth compared to older versions such as Bluetooth 4.0, and can effectively reduce delays. For example, when using a Bluetooth 4.0 speaker to play videos, there may be significant delays;
For Bluetooth 5.0 speakers, the delay will be greatly improved in the same scenario.
Audio encoding format: Different audio encoding formats have different effects on latency. Common SBC encoding formats have relatively large delays, while encoding formats such as aptX and AAC perform better in reducing delays and improving sound quality. Bluetooth Speakers that support aptX encoding usually provide lower latency, making sound transmission closer to real-time.
Device distance and obstacles: During the propagation process of Bluetooth signals, the distance between the speaker and the playback device and obstacles will interfere with the signal quality. The farther the distance and the more obstacles, the more serious the signal attenuation and the higher the delay may be.
Device performance and compatibility: The hardware performance, processing power and compatibility between the playback device (such as mobile phones, computers, etc.) and the Bluetooth Speaker itself are also related to latency. Devices with lower performance may not be able to process Bluetooth signals in time, causing delays; if compatibility between devices is poor, delay issues may also occur.
Wireless interference: Other wireless devices in the surrounding environment, such as WiFi routers, microwave ovens, wireless mice and keyboards, etc., work in the 2.4GHz frequency band and will interfere with Bluetooth signals, causing delays. In addition, when mobile phone Bluetooth and WiFi share a 2.4GHz antenna, if WiFi downloading is used during Bluetooth playback, it will also seriously affect the Bluetooth transmission rate and increase delay.
In actual use, the sound delay of different brands and models of Bluetooth Speakers varies greatly. Some high-end Bluetooth speakers can control the delay to a low level by optimizing the design and using advanced technology, even making it difficult for users to detect; while for some low-end or old Bluetooth speakers, the delay problem may be more obvious, and when watching the video
Audio and video may be out of sync when watching videos or playing games. If you are sensitive to sound delay, it is recommended that when purchasing a Bluetooth Speaker, you should pay attention to its Bluetooth version, supported audio encoding formats and other parameters, and try your best to test it in the actual use environment to ensure that it meets your needs.
