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You still have the problem of VoIP not passing audio above 5 kHz Instead of taking a S-Meter reading you need to convert the amount of high frequency noise to a PL tone. Basicly build a SuperSquelch-IIIB and use a 9400 voltage to frequency converter on the "S-Meter" pin. Remember this is not a true S-Meter read but rather a voltage between 0 and 5 volts which rises as the noise on the carrier does. Any squelch circuit that can spit out a voltage to represent the noise on channel will do the trick but it has to be done at the RX site. I like the rest of your plan and feel that is the way it should be done. I could experiment but I am no good when it comes to writing software. Letting the computer sound card handle the noise determination could be a good idea, But you would have to sample at 22kHz or 44kHz to get the audio where youd need it and this may not be possible as the VoIP is going to run the sound card at the rate it wants to, But if running two sound cards doesnt bother you... Other wise you need the Noise to PL converter. ac0y5 wrote: Okay Nate, I sent most of the posts about this Thursday or Friday before the theoretical stuff started it was posted by the moderator late Saturday as the time stamp states.Now, Any good software is created in modules or subroutines and the main program just calls the routines as needed. You don't think someone just jumped in and wrote Win2000 or XP I'm sure. AS a HARDWARE and SOFTWARE ENGINEER and Visual Basic Instructor this is the first thing that I teach in class FIRST CLASS and I have my students re site it back in every class. If they only learn one thing it MUST be this. It sounds like a great project for a group. There is a add on package to visual Basic called VB VOICE, I've just started to play with it AND, It has great potential even for this project. What one would have to do is get a group togeather to work on the PROJECT. break it up into tasks and assign each person with in the group a task to write after the modules is written it must be integrated into one piece of workable code. This is a job with in it's self. Now, to the practical. On the receiver end it's pretty much simple to create the VOIP packets if you use computers at each site that has is's clock synched with a NIST standard by using (NET TIME) command. set the TTL ( time to live) which sets the maximum time that the packet will live on the network. To what ever you like. That will take care of the that problem. Each site sends it's VOIP packet to the TX computer. Each packet has a numerical sequence if the packet arrives out of sequence the machine still can reassemble it in order with out anyone the wiser. All of this is built into TCP/IP. Simple so far aye? Now comes the hard part. Deciding what approach to take in evaluating the received audio. First, as I said in my other post Signal strength is a VERY BAY way of determining which receiver to select. Even Motorola gave up on it. Their second generation voting systems used the basic approach that GE originally used that of evaluating the audio not the signal strength. This should be done in the DSP on the sound board, Maybe, maybe not. Like I said, It would be a neat project to attack but not very use full. After all a lot of repeater owners just want's to get something on the air with out knowing how a repeater works much less caring about how it sounds. After all look at how many posts that show up here asking how to put a repeater together or where they can buy the parts or one already built, most likely not having given a thought about having to get a repeater pair coordinated much less knowing ANYTHING about how one works.....Repeater owners should be tested separately. OOPS, I have to hop down off my soap box. I got a glance the other evening after a VE session and one of the candidates that PASSED the GENERAL exam said:, " I don't know shit about electronics or radios and I passed". IT's a sad state that our hobby is in. ....OOPS, Hopping down again. 73 for now, AC0Y --- In [email protected], Nate Duehr <[EMAIL PROTECTED]> wrote: Yahoo! Groups Links
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