[Openal] Why use more than 2 buffers?

[Jimmy Gervais]

In my current project, I use 3 buffers for real-time audio and by real-time,
I mean the calculations are done in real-time. I start at half the second
buffer and by the time I switch to the second one, I'm writing to the third
one and so on. It is just a precaution. I think I came up with that solution
since I planned to switch buffers with a separate dedicated thread and
didn't want the program to attempt writing to the buffer being read.
Otherwise, I don't know either why one would use more than two buffers.

2009/12/10 Nate Foreman <nforeman at quantumsignal.com>

> We all know that OpenAl sources are capable of queuing multiple buffers for
> playback.  The question is, why would you ever need to queue more than 2
> buffers at a given time?  Aren't two buffers sufficient for the
> double-buffering technique used to continuously streaming audio data?
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