3 ms·

You're not wrong, but I suggest you go out and measure the latency of pro audio wireless systems that have proprietary and specialized low-latency audio codecs.

You're not wrong, but I suggest you go out and measure the latency of pro audio wireless systems that have proprietary and specialized low-latency audio codecs. They push 10-15ms, depending on the source content. Often they trade fidelity for latency. They're also rather pricey, because it's a specialized use case. One of the tradeoffs in latency for fidelity is that the two major components of lossy codecs (the filterbank and DCT) have an inverse relationship between quality of encoding and fundamental latency built into the algorithms. The solution to your needs is a pro audio product developed by Shure or Sennheiser, not consumer electronics like bluetooth.

klodolph 7y ago
The wireless systems I am thinking have published latency specs of something like 3ms, for example. It’s not worth the cost for my uses so I just stick with wires. I’m not sure which systems you are referring to that have 10ms latency, but I haven’t worked with many wireless systems so it could just be a lack of experience on my part. https://assets.sennheiser.com/global-downloads/file/12186/SK_6212_Specifications_Manufacturer_Declarations_01_2019.pdf https://assets.sennheiser.com/global-downloads/file/12186/SK... - 3ms https://www.shure.eu/productdocumentsfiles/default/products/wireless-receivers/glxd6/glxd6userguide-c44b67f219c0ede7f15233aba75dba5b.pdf https://www.shure.eu/productdocumentsfiles/default/products/... - 4ms Opus can achieve reasonable lossy compression ratios with 2.5ms packet sizes using its CELT half, which uses MDCT, so it’s definitely possible to achieve high quality under these constraints. I doubt it would make sense with Bluetooth LE because of the complexity of the codec.
lightedman 7y ago
"You're not wrong, but I suggest you go out and measure the latency of pro audio wireless systems that have proprietary and specialized low-latency audio codecs." I have a Shure wireless guitar/microphone transmitter - latency purely determined by device distance as it's totally analog and doesn't need/use a codec. That's pro-level audio equipment from the early 90s ($250 back then.) Literal atmosphere-limited light speed. Today's stuff is literal garbage. Even the latest Shure wireless stuff can't keep up with the higher frequencies on my guitar and attenuates/dampens them.

klodolph 7y ago

The wireless systems I am thinking have published latency specs of something like 3ms, for example. It’s not worth the cost for my uses so I just stick with wires. I’m not sure which systems you are referring to that have 10ms latency, but I haven’t worked with many wireless systems so it could just be a lack of experience on my part. https://assets.sennheiser.com/global-downloads/file/12186/SK_6212_Specifications_Manufacturer_Declarations_01_2019.pdf https://assets.sennheiser.com/global-downloads/file/12186/SK... - 3ms https://www.shure.eu/productdocumentsfiles/default/products/wireless-receivers/glxd6/glxd6userguide-c44b67f219c0ede7f15233aba75dba5b.pdf https://www.shure.eu/productdocumentsfiles/default/products/... - 4ms Opus can achieve reasonable lossy compression ratios with 2.5ms packet sizes using its CELT half, which uses MDCT, so it’s definitely possible to achieve high quality under these constraints. I doubt it would make sense with Bluetooth LE because of the complexity of the codec.

lightedman 7y ago

"You're not wrong, but I suggest you go out and measure the latency of pro audio wireless systems that have proprietary and specialized low-latency audio codecs." I have a Shure wireless guitar/microphone transmitter - latency purely determined by device distance as it's totally analog and doesn't need/use a codec. That's pro-level audio equipment from the early 90s ($250 back then.) Literal atmosphere-limited light speed. Today's stuff is literal garbage. Even the latest Shure wireless stuff can't keep up with the higher frequencies on my guitar and attenuates/dampens them.