According to Xiaomi's official introduction, Snapdragon listening technology can bring three new experiences to Xiaomi's flagship noise-reducing earphone Pro: giving the real wireless earphone a music experience as high as Hi-Res (24bit/96kHz), and dynamically adjusting the transmission rate to provide superior anti-interference and anti-interruption ability, so that the other party of the voice call can hear more natural sound, and automatically switch to the game low-delay mode when monitoring delay-sensitive scenes, reducing the Bluetooth delay to only 89 ms ..
It is worth mentioning that Snapdragon Changting also changed the coding used in traditional Bluetooth calls, and upgraded the uplink audio data to 16bit/32KHz. Therefore, the broadband of 20Hz- 16KHz can be reserved, which makes the tone color more natural during voice call.
Snapdragon listening technology can give true wireless headphones a music experience as high as Hi-Res (24bit/96kHz), comparable to LHDC technology mentioned by friends recently? Judging from the official technical parameters alone, this is the case. Snapdragon's listening technique is similar to LDAC that our music lovers are familiar with. It first raises/lowers the original audio to 24 bits /96 kHz to bring high-resolution audio.
The full name of LHDC is low-latency high-definition audio codec, which is a high-quality Bluetooth codec scheme. LHDC supports the transmission of 24-bit /96 kHz streaming media audio via Bluetooth connection, with a speed of up to 900kbps. The original sampling rate of LHDC technology is 24-bit /96 kHz high-resolution audio, which reduces the delay of SRC process.
LHDC has passed the JRS high-resolution audio wireless standard certification. According to the signal situation, LHDC supports the bit rate of 400/560/900 kbps. There is also a low-latency audio codec (LLAC) version, also known as LHDC LL, with an end-to-end delay of about 30 milliseconds.
Snapdragon listening technology has brought a brand-new sound quality experience to Xiaomi's flagship noise-reducing earphone Pro, but there is still a certain experience gap compared with the original sampling rate output of LHDC technology, that is, 24bit/96kHz high-resolution audio.