Broadcasting on BlogtalkRadio is a blessing, until you want to start doing professional-level things like mixing content and adding other inputs to the broadcast, as well as to improve the voice component to get rid of that "telephone voice" from your broadcast. As such, we've been putting considerable effort into building a truly effective broadcast method by coupling a dedicated Skype desktop phone to a mixer-board and to begin broadcasting using this method.
Our research was helped considerably by looking at the following video link. Because of this, we opted to use Skype for the transmission medium for our show, but with a twist... We decided to use the Belkin Skype phone to handle the audio input and output to the mixer-board via a coupler device and to avoid the problems of using a dedicated computer with the attendant difficulties this presents. See:
http://www.digitalpodcast.com/podcastnews/...st-using-skype/
This link is a very informative link about how to optimize your system using Skype and a USB phone connected and how to tune your network for the best connection. It's not for the faint of heart and it discusses a whole range of options you may want to examine to improve quality. It is really a great resource and hopefully more people will pass the link around.
I studied the problem of broadcasting using Skype and decided to go with a Belkin Desktop Skype phone and integrate an Excalibur HC-1 handset coupler to tie into my mixer board. It made the most sense and my first test broadcast of my own paranormal radio show with just the Skype phone worked nicely, though the PIN number was a challenge for reasons as yet unknown. I'm backing up the Skype phone with a land-line to be safe.
(changed as of March 2009!)
The advantage is that the desktop Skype phone suffers none of the maladies of the PC variety, namely it's dedicated and no other process tries to compete for it's bandwidth or memory resources. Next, the audio tie-in is just so much easier and I can bypass having a phone stuck to my ear and focus on traditional studio layouts to do my show. Yep, it costs a little extra, but for $79 on Amazon, I didn't get a bad deal. Latest price is around $100 on the Belkin site.
http://www.bswusa.com/proditem.asp?item=HC-1 for the handset coupler. Our first tests are now underway with this device and it's proving to be a trick to integrate since the default cable couplings need to be customized due to hum in the audio. I found that the tips of the connectors need to be rewired to handle a slightly different arrangement, based on advice in the handi-coupler instructions. A trip to Radio-shack this weekend garnered the parts needed to build the necessary custom cable and it should be up and running this weekend.
(As of March 2009, this is still a tough little problem for us - the connectors are jury rigged and we're still trying things out - plan to use the patch only for conventional phone dial-ins straight to the studio).
Update as of April 11'th 2009
The studio continues to evolve. We made a few operational changes. Primary in the change list is that the broadcast computer is now broadcasting the show via Skype using our wireless connection to our access point. The support computers are either wireless and we have one dedicated CAT-5 line that handles a secondary computer that is hooked into our audio mixer. We dial in using the old method with the land line to start the show and then just place it on mute. If we lose the network for whatever reason, we can be back on in a few seconds with the telephone running things to continue the show.
We are also adding a directed antenna to improve gain for the wireless card so we get better bandwidth for the broadcast computer. We have a Cantenna and will also be building a mast-mounted antenna to get the most db for our $$$.
We are going to examine using the Skype dedicated phone to dial in over the dedicated CAT-5 line next and to keep our long-distance costs down by doing things that way. The big issue is to see how the overhead of two Skype connections impacts the show. A test show will be done to evaluate this and we think it should become the new and final method.
Updated as of March 17'th, 2009
We tried a broadcast with the first setup with the phone patch system and noted that the show would fade in and out as some sort of mysterious audio issue plagued our "Ad-Hoc" show.
So, I went back to the drawing board and decided to do the following:
- The Skype Desktop phone is now used to call into the show and then is put on hold. It is the emergency backup in case we lose the other phone line that calls in (the broadcast computer).
- A PC with Skype loaded is used to dial into the show through another SkypeOut line and thus we always have two callers minimum on the show. This computer has the input via the USB connection to our conventional sound board and inputs from the sound card and other external inputs to drive the show audio and special effects.
Our first test, using a simple desktop microphone, went quite well and left us convinced that our action to take the show into the next step will be successful. So we're going to rig the sound board to tie in, temporarily, into the line-in with audio inputs to run the studio microphone and a seperate computer with sound effects and EVPs in so we can gain total control of our audio setup.