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The other story about the recording of the Telecom Junkies podcast: Interview with a VoIP Hacker - a.k.a. why my voice levels are so different

imageWhy does my voice change in audio quality about half-way through the new Telecom Junkies podcast?  Here's the story.

A few minutes ago I posted to both the Voice of VoIPSA weblog and also the Blue Box podcast site a note about the new Telecom Junkies podcast that features an interview with Robert Moore, one of the two people involved with the large VoIP fraud cast last year.  About mid-way through my connection dies and you hear Jason saying "Oh, we lost Dan!" and then I'm back, but with a much softer voice.

Since it says something about telephony - and since I'm also interested in relaying lessons for podcasting - here's what happened.

In the hotel I was staying at in Florida, I was getting pretty poor connections using my AT&T GSM phone (the replacement Blackberry had not yet arrived).  I'd noticed that when calling people from my room, even if I went out onto the balcony, calls would still drop out sometimes - even when I was sitting still.  Now I don't know if this was because I was on the 20th floor (room 2048, what a great geek number!) or because I was at just a particular angle for the GSM towers or what.  The phone seemed to indicate that I had great connection strength.  All I knew was that connections were dropping. 

Needless to say, I was a bit concerned going into the Telecom Junkies podcast recording.  Jason Huffman records his shows by having everyone call into a hosted conference service.  When the recording is done, he gets an email with a WAV file, slaps on the musical intro/outro, potentially does some minimal editing and posts the show to their website.  As Blue Box listeners know, I'm always looking to get the best audio quality possible so I was a bit concerned.

Given that cell phone coverage was problematic, I decided to try using a softphone over the hotel Internet.  Unfortunately, I am on a trial system for Mitel's softphone (using the latest development versions) and I had received the notice that I need to upgrade to a new trial load to keep using it - and hadn't yet downloaded the new version.  So I thought I'd use Skype instead.  However, I also had the dilemma (for either softphone) that because of space considerations I had left my nice new USB headset at home.  Given that I've had reasonable success with Skype's new 3.5 and no headset, I figured I would give it a try anyway.

So I actually first called into the conf bridge using Skype/SkypeOut and spoke with Jason briefly to ask about the sound quality.  He said I sounded a bit quiet and rough (keep in mind that I'm talking to the mic on my Dell laptop), so I called back in on my cell phone.  However, I didn't disconnect the Skype connection, but instead muted the microphone and plugged in a set of headphones so I didn't hear it.

Mid-way through the call, my cell-phone connection did die.  What I did next was put the PC headphones on and un-mute the Skype microphone... ta da... I was back in the conf call, albeit at a lower volume level.  So when you listen to the recording, the first part is via cell phone (and includes an audio cut-out or two) and the second part is via Skype without a headset microphone.

I thought there were a couple of interesting points here:

  1. I have got to find a really small headset that I can carry with me when traveling.
  2. VoIP can beat cell phones in availability (not that any of us in North America will even remotely dispute this!)
  3. It's good to have backups when doing interviews remotely.
  4. It never even occurred to me to use the hotel landline!

Let's think about that last point for a minute.  I had, sitting right there on my desk next to my computer, a perfectly functional phone tied into the hotel's PBX.  And yet, it never even remotely occurred to me to use it!  In fact, outside of calling within a hotel I can't think of the last time that I've actually ever used a hotel phone for an external call.  It's been probably... years!  I guess I've gotten too used to the typically-extortionist rates charged by hotels for phone usage that I just don't even consider it.  (Well, and every other time my cell phone has worked well!)

In any event... that's the story behind the story...  :-)

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