When your Mac reboots, you can confirm that the codec change has been applied by following the first series of steps in this article. Terminal commands for enabling AAC and aptX Codecs. Hi guys, i recently purchased bluetooth headphones which support aptx HD standard. How can I enable aptx HD on iMac, i know that iPhones aren't supported. I know that via bluetooth explorer app I can force the Mac to use aptx codec, but that is not aptx HD. I use 2017 iMac 5k. Thanks for any suggestions. AptX HD goes a step further, offering 24-bit audio at a bit rate of up to 576 kbps, while the new aptX Adaptive theoretically offers the sound quality of aptX HD at a lower bit rate and has the. I'm 99% sure that if you enable AptX in MacOS Catalina, you actually get AptX. Even if it shows SBC when using the 'hold Alt and press bluetooth device to see codec in use' method. I've found a 'metallic noise' when using SBC codec with deep punchy bass. The third parameter is the Bluetooth protocol compatibility. A good adapter must support both Mac and Windows. It must also support all the new and old versions of windows. Windows 8, Windows 7, XP, Vista, 2003, 2000 Me 64/32 bit and Mac OS, with an available USB 2.0 or 1.2 port. These are the basic benchmarks.
If you're using a high-end bluetooth headset on your Macbook Pro it's likely your mac is using an audio codec which favors battery efficiency over high quality. This results in a drastic degradation of sound, the SBC codec is the likely culprit, read more about it here.
- Play a song on your headphones
- Option (⌥) click the Bluetooth button at the top of your screen
- If you're using AAC or aptX, you can stop here—those are the highest quality codecs.
UPDATE: It looks like Apple has silently dropped support for aptX, leaving only AAC
You'll need to download Apple's Bluetooth Explorer in order to change codecs.
Head over to Apple's Developer Downloads M4r converter for mac.
Search for
additional toolsand downloadAdditional Tools for XCode 11.dmgOpen the
dmg, and openBluetooth ExplorerClick on
Tools > Audio Optionsand change your audio codec to the following settings:- Enable AAC
- Force use of aptX
Disconnect your Bluetooth headset, reconnect it, and while some music is playing, inspect your codec. It should now show either AAC or aptX.
Aptx Mac Os
Aptx For Mac Os High Sierra
You can increase the AAC bitrate in Audio Options but be sure to keep an eye on the graphs. The retransmission percentage is roughly equivalent to packet loss, and if you increase the bitrate too high your audio will start cutting out:
Aptx Codec Mac Os
The retransmission rate is a function of distance and interference, and you'll need to disconnect/reconnect on each attempt before you find the sweet spot.
