Ggwave: Tiny Data-over-Sound Library

Re:Ggwave: Tiny Data-over-Sound Library by wyldfire on Saturday February 13, 2021 @01:07AM (#26121772)

> The bandwidth rate is between 8-16 bytes/sec depending on the protocol parameters.

This makes me wonder - what's the ideal channel capacity for in-room audio with cell phone mic and speakers? And what are the limiting factors? If you had some really sophisticated channel coding, how good could the throughput ever get?

In the 90s we could do 56ish kilobits/sec over PSTN. What's state of the art now? Unchanged because of a lack of a market?

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Re:Ggwave: Tiny Data-over-Sound Library by th0ma5 on Saturday February 13, 2021 @01:55AM (#26121923)

I would consider the FT8 family of amateur radio encodings to be the SOTA. Many of them like WSPR are able to be decoded below the noise floor using forward error correction. It is very limited bandwidth, short messages with callsigns, etc. https://physics.princeton.edu/pulsar/k1jt/

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