Comparing the sound quality of atpxhd and atpxadaptive, there is no relationship between the two!
aptx, aptxHD, aptxAdaptive; this is Qualcomm’s Bluetooth-specific coding, specifically for transmitting audio; Bluetooth headsets regardless of whether they support TWS+ or not, may support APTX; compared to the most basic SBC, sound quality and other aspects are better There is improvement. I have actually tested it, and there is still a big difference between SBC and APTX. You can try it with APTX headphones. In the Bluetooth settings of your mobile phone, regarding advanced audio or APTX, the default is SBC, and you can hear the difference; APTXLL: focuses on low latency. It can reach 40ms, which is almost the same as wired. Delays lower than 70ms are invisible to the human body.
APTXHD: It can support 24bit96Khz and can reach a rate of 576Kbps; it is much higher than ordinary ones. In theory, the sound quality has also been improved a lot;
aptxAdaptive: This is relatively new, similar to integration, with APTXHD and APTXLL functions, automatically suitable for different situations. It seems that no headphones support this now; according to my understanding, it is When playing games, it adapts to the low latency of APTXLL, and when listening to music, it adapts to APTXHD; so aptxAdaptive is not an improvement over the previous one, but it includes the previous APTX features.