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> But the one freaking thing I cannot understand is why after almost 20 years of wireless audio in computers, the microphone quality is still atrocious. Off th
by x-complexity 4y ago
> But the one freaking thing I cannot understand is why after almost 20 years of wireless audio in computers, the microphone quality is still atrocious.
Off the top of my head:
1) Wireless noise from other devices: WiFi signals from other devices can cause disruptions to Bluetooth signals.
2) Packet drops: Some packets from could be lost during the wireless transmission.
3) Software issues: Anything from outdated audio drivers, to dependency requirements, to the CPUs being hogged by something running in the background.
4) USB 3 interference: Apparently USB 3 introduce interference to the 2.4GHz range when it's being used.
https://www.usb.org/sites/default/files/327216.pdf https://www.usb.org/sites/default/files/327216.pdf
- mort96 4y agoThose don't come into play here though. The problem with mic quality with Bluetooth is that we're still using the old headset profile for bidirectional audio. That means bidirectional Bluetooth audio maxes out at a sample rate of 16kHz and bitrate of 64kbit/s, with an ancient compression codec at that. I don't understand why nobody has fixed that. Even Apple, known to extend the Bluetooth spec to improve UX, seems to use the HSP for bidirectional audio between a Mac or iPhone and AirPods. I don't get it. Even if you kept the 64kbit/s bandwidth but switched to AAC you'd get a significant audio quality improvement since you could at least represent sound over 8kHz.
- hulitu 4y ago> 2) Packet drops: Some packets from could be lost during the wireless transmission. A very long time ago, they used buffers.