WSDH510

https://en.wikipedia.org/wiki/Audio_Aggregator_25747

Ok thank you; the goal of the aggregator is to somehow avoid the central clearinghouse issue but it is difficult to make a true peer<-->peer aggregator because of numerous issues including protocol information distribution, conflicts of numbering schemas (as mentioned), and peer prioritization; networks of any kind including radio networks tend to merge towards centralization which is unfortunate but it is reality; though ideally in a world of two-way radios there isn't a central clearinghouse issuing the schema.

I'm trying to figure that out but I don't know yet; the different systems of nodes have different numbering schemas so some sort of resolver is probably the way to go; kinda like GMRS<-->HAM resolvers that link callsigns together.

The aggregator applies to GMRS because it is one potential method to link systems of computer<-->radio nodes with no encryption involved.

The aggregator uses NCAT which is a derivative of NETCAT to receive open S16_LE audio from ALSA/SoX on port 25747 and then extends the open S16_LE audio back out to the internet on port 25747. The aggregator may be monitored on Linux/Mac/Windows with Sound eXchange (SoX) using the following command: nc 24.243.9.73 25747 | ./play -t s16 --endian little -c 2 -r 16000 -

The aggregator is functioning with Sound eXchange (SoX) cross-platform on Linux/Mac/Windows!

Ethernet microphone? Is connecting a microphone to an ethernet cable to a radio ok? Does this count as remote control operation of a radio or is it GMRS linking?

Ok; the many-to-many audio structure is fundamental to the Audio Aggregator 25747 protocol in the spirit of two-way radios. The protocol uses port 25747 for open audio like a radio which is not encrypted. The Audio Aggregator 25747 protocol is defined as follows; 2 channel stereo at 16k Hz little-endian (S16_LE on ALSA) over port 25747 using netcat or specifically a derivative of netcat called ncat. The protocol is open and meant to be used peer-to-peer like a two-way radio. The development of Audio Aggregator 25747 may be monitored on port 25747 of the internet or on GMRS radio in San Antonio, Texas.

Yes; the goal of Audio Aggregator 25747 is to combine audio in a many-to-many audio structure where there may be multiple audio inputs and multiple audio outputs similar to a radio. A question that I have is; is this audio structure similar to existing networks of radios?

Audio Aggregator 25747 is a system that radio/repeater operators can connect to using Advanced Linux Sound Architecture and NETCAT on internet port 25747 to facilitate the transmission and reception of radio audio. The purpose/goal of the project is to facilitate high quality audio in low power radios. Important to note that internet scanners may catch the audio on internet port 25747 as the audio is open like a radio.

Audio Aggregator 25747 RX ncat --recv-only 24.243.9.73 25747 | aplay -f S16_LE -c 2 -r 16000 TX arecord -f S16_LE -c 2 -r 16000 | ncat --send-only 24.243.9.73 25747