Plain aptX seems to be slightly better than SBC, but only aptX LL seems to be good enough to not be noticeable.Ī single page on mentions aptX.Īpparently, Windows 10 has supported the aptX codec since the first release (1507). They even have a list with latencies for all the headphones they ever tested. Most Bluetooth headphone reviews do not include latency measurements, with the notable exception of. In other words: the audio latency should ideally be small enough to not be noticeable. SBC, for example, comes with three quality modes, low (201 kbs), middle (229 kbs) and high (328 kbs).ĭevices may select lower-quality modes to favor a stable connection over sound quality (example: these Sony headphones ).
Please let me know by commenting below if you know of any publications. Specifically, the maximum bitrate of 352 kbs is not much higher than SBCs 320-345 kbs (SBC depending on implementation).ĭifferent codecs can be very different in encoding efficiency, as are H.264 and its successor H.265 for video (the latter only needs about half as many bits for the same visual quality).įidelity can only be determined by double-blind listening tests. Lets break this quality question down into two different aspects: fidelity and latency. In this article, I am looking at aptX benefits and I am describing how to get aptX on Windows 10.įiguring out whether that is actually true is harder than expected. However, A2DP supports additional codecs that may increase audio quality or reduce latency compared to SBC.
To guarantee compatibility between devices, any device implementing the A2DP profile needs to offer a common codec, SBC.
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