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Bluetooth vs. USB Wireless - SteelSeries
https://steelseries.com/blog/bluetooth-vs-usb-wireless-120#:~:text=When%20you%20engage%20in%20chat%2C%20Bluetooth%20switches%20over,frequency%20is%20reduced%20to%204%2C000%20or%208%2C000%20Hz.
Bluetooth HFP 1.6 wideband audio (HD Voice)? | XDA Forums
https://forum.xda-developers.com/t/bluetooth-hfp-1-6-wideband-audio-hd-voice.3291630/
If you're wondering, so-called HD Voice in bluetooth (not to be confused with the carriers' "HD Voice" which is a similar thing but within their network) is …
HFP Device Connection - Windows drivers | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/hfp-device-connection
The HFP Device connection topic discusses how the audio system determines and handles connection status information for a Bluetooth hands-free profile (HFP) device. As required for all audio drivers, the audio driver must support KSPROPERTY_JACK_DESCRIPTION. The audio driver maintains an IsConnected field in the filter factory context.
Understanding Bluetooth® Wireless Audio - Plugable ...
https://kb.plugable.com/bluetooth/understanding-bluetooth-wireless-audio
Typically, the full range of hearing can be reproduced using the frequencies from 20 Hz to 20 KHz. Sound must be sampled at least double the highest frequency present that needs to be reproduced, so you’ll often see sampling rates of 44.1k (twice 20 kHz plus a little extra) samples/second for good music quality.
Why Bluetooth Headsets Are Terrible on Windows PCs
https://www.howtogeek.com/354321/why-bluetooth-headsets-are-terrible-on-windows-pcs/
As Darko.Audio explains, on a Mac, if you’re using 2.4 GHz Wi-Fi, if you have more than two Bluetooth devices connected to a desktop, or if you have more than one connected to a laptop, macOS drops down to lower-quality SBC audio over the Bluetooth Advanced Audio Distribution Profile (A2DP) connection. That’s according to Apple.
Bluetooth vs. USB Wireless - SteelSeries
https://steelseries.com/blog/bluetooth-vs-usb-wireless-120
When you engage in chat, Bluetooth switches over to HFP and drastically reduces the bandwidth of your audio, greatly reducing quality and fidelity. Most audio has frequency content up to about 20,000 Hz. But when Bluetooth is operating in HFP, the max frequency is reduced to 4,000 or 8,000 Hz. The same is applied to your voice.
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