According to reliable information, vivo has signed an agreement with CSR to join the Aptx Alliance. In the near future, it will support Aptx encoding on Qualcomm 8974 platforms (vivo Xplay3S, vivo Xshot) through system upgrades, so that the level of listening to music with Bluetooth headsets can be improved from the original MP3 level of 64Kbps to the level of CD lossless sound quality. It is reported that although this technology has been adopted on high-end smart phones abroad, no domestic manufacturer seems to have paid for it, so vivo may become the first smart phone manufacturer supporting Aptx technology in China.
However, Vivo recently revealed that Vivo has signed an agreement with CSR to join the Aptx Alliance. In the near future, it will support Aptx encoding on Qualcomm 8974 platforms (vivo Xplay3S, vivo Xshot) through system upgrades, so that the level of listening to music with Bluetooth headsets can be improved from the original MP3 level of 64Kbps to the level of CD lossless sound quality. It is reported that although this technology has been adopted on high-end smart phones abroad, no domestic manufacturer seems to have paid for it, so vivo may become the first smart phone manufacturer supporting Aptx technology in China.
As we all know, before transmitting data, Bluetooth technology will advance encoding compression. Generally, SBC is used as the encoding method designed for calls, and only 8Khz sampling rate data can be transmitted. Although enough for calls, it is not enough for music with higher requirements, let alone lossless and Hi Fi. Although later, in order to solve the problem of Bluetooth listening to music, A2DP transmission protocol (Bluetooth stereo) was adopted and dual channel playback was realized, the actual experience was still very bad. Because the data encoding mode of A2DP transmission protocol is still SBC, resulting in serious compression of music data. Even if the lossless format is played on the device, the data received by Bluetooth is still of low quality: low-frequency turbid and broken, high-frequency hoarse and disordered.
The Aptx audio compression technology of CSR overcomes the bandwidth barrier in the standard Bluetooth technology, and can realize the true equivalent of lossless audio coding and re decoding. Devices supporting Aptx technology can transmit to each other, and can almost achieve the equivalent of CD lossless audio quality playback. Compared with traditional Bluetooth stereo devices, not only the low frequency is clear and elastic, but also the high frequency is more lubricated and broad, It can be said that Aptx is a true wireless lossless music playing solution.
It is known that Aptx is a digital audio compression algorithm based on subband ADPCM (SB-ADPCM, The delay of Aptx is only 1.9 milliseconds, which can be almost ignored. Its 20Hz-22kHz audio bandwidth is consistent with the 16bit/44.1kHz bandwidth of CD audio quality, while the SBC audio bandwidth is only 20Hz-17kHz, and Aptx can encode audio in the full frequency range. This has the advantages of low latency, good fault tolerance and high audio quality. In addition, the complete audio frequency bandwidth is consistent with the high fidelity performance, and provides backward compatibility for SBC Bluetooth. Compared with A2DP, it is better than A2DP in terms of synchronization time, fault tolerance, frequency response, dynamics and hardware complexity. However, due to the need to pay, most of the Bluetooth receiving devices that support Aptx, such as headsets and audio, are high-end models, such as Sony MDR-10RBT and SBH80, Blue String R2, Innovative WP-350 and Air HD LG HBS-730、 And the 50 series of SYNC make Aptx have a certain threshold.
Now, Vivo, whose foundation is the ultimate Hi Fi, is about to upgrade its support for Aptx, which will undoubtedly make its ultimate Hi Fi more perfect. Previously, it could only enjoy the Hi Fi sound quality through wired headphones, but now it can also enjoy the lossless sound quality close to the CD level through Bluetooth headset devices. This makes vivo intelligent devices such as vivo Xplay3S and vivo Xshot more extreme and Hi Fi in terms of ease of use and compatibility.
