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zaafar
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May 4, 2019
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Would it support playing the stereo quality sound with mic on? My current bluetooth headphone either allow hand-free OR stereo quality music but not both. :(
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May 4, 2019
Evshrug
3773
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May 15, 2019
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zaafarThat’s how Bluetooth works... Music takes up bandwidth, and communications (mic input) takes up more bandwidth (as well as 2-way communications instead of 1-way). Phone calls with microphone audio actually switch to a different Bluetooth codec in order to carry the data. If microphone input just added 1/3 as much demand on the bandwidth (mic in, left channel out, right channel out), that would be one thing, but I think it actually takes up more than that. I’m not an engineer, but if you think of stereo as two channels incoming to the headphone at the same time, and the info could be encoded in such a way that they can be transmitted simultaneously, BUT you have to interrupt that stream of radio to send mic audio back from the headphone to your phone, then you have to chop up both streams into micro-sized bursts of info (packets) and the microphone ends up getting half the bandwidth. Again, I’m not an engineer, and I could be totally wrong. Bluetooth 4.2 added the capability to have a host device pair with two devices simultaneously (I guess my phone does that when it is paired to my headphones and my smart watch at the same time, allowing me to control my volume setting from my watch), so maybe there is a way to take advantage of that. Bluetooth 5 has noticeably more bandwidth than previous versions (if your phone/source also has Bluetooth 5), so maybe that could help, but each application used would have to be programmed to take advantage of that (my iPad Pro and my Audeze Mobius have Bluetooth 5, but PUBG Mobile still loses sound quality when I enable the mic). Nothing is impossible with enough time and development, but I wouldn’t get your hopes up too much yet.
May 15, 2019
Evshrug
3773
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Jun 8, 2019
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zaafarJust to add to this... something I recently found out: Since aptX, AAC, and LDAC are one way transmission codecs (no mic input), Sennheiser actually just made their own codec to use on their new wireless GSP 670 with an included USB dongle (to use with PS4 or PC) so that they could have aptX quality + a mic return channel. It still has AAC and aptX for mobile use (and Bluetooth 5), and USB for PC to enable surround/binaural processing. Edit: Just found out that the GSP 670 doesn’t use Bluetooth to communicate with the included USB Dongle... wonder what it uses, 2.4 GHz?
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Jun 8, 2019
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