Unfortunately, not all Bluetooth headphones support aptX or AAC, although most of the more recent models do. The aptX codec, however, bests both at 352 Kbps. Likewise, AAC’s improved compression algorithms allow for better sound quality, despite its lower maximum bitrate of 250Kbps when compared to the 328Kbps of SBC. In short, aptX promises “CD-like” sound quality, which is something SBC cannot offer. If you want to learn more about how aptX and AAC work, we have a good primer on the subject. Neither aptX or AAC exhibit this behavior. Latency is also a consideration with SBC, and audio lag is noticeable when watching video content. ![]() ![]() SBC was designed to be efficient and ensure compatibility rather than to offer the best possible sound quality. All three codecs compress the audio before sending it to your headphones, but aptX and AAC do so without a dramatic impact on the overall audio quality. SBC is the codec that macOS sometimes defaults to, whereas aptX and AAC offer better sound quality. Some codecs are better than others at compressing audio without reducing its quality, which is why choosing the right one is essential. ![]() This allows the file to be transmitted quickly. In this case, the codec is used to compress the audio file on one end (code) and decompress it on the other (decode). The word “codec” is short for “coder-decoder,” which is precisely what a codec does.
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