If you’ve ever used Goog 411, Google’s free 411 service (And if you haven’t, I suggest you do. Just dial 1-800-GOOG-411.) then you’ve probably heard the “biddy-biddy-boop” sound that the service makes while looking for your request.
This “fetch audio”, created by Google’s senior voice expert, Bill Byrne, is more unique than you might think.
It had to have “just the right tone, the right mood, the right signal. It can’t be busy or too monotonous, it has to be a quick noise to evoke efficiency. It can’t be too uniform, like a ticking clock.”
I guess that sound is more complicated than one would think. No wonder they hired a voice expert just to design it!