Re: Cross-platform sound reliability issues -- anyone have experience
with this?
cadar6@gmail.com wrote:
Hi, I'm hoping that someone out there can share their experience and
perhaps let me know why I'm having problems trying to play several 1-
second sound clips in a Java 1.5 applet. In particular, I'm having
different kinds of problems on the Mac vs. the PC. By the way, I'm
writing this application for an academic lab that would like to
conduct language learning experiments over the web using a Java
applet.
I'm just going to list the performance problems that I've had (and not
yet solved), and if anyone can give me either a solution to any of
them or just let me know that there *is* no known solution, I would
appreciate it!
I'm doing my development on the PC, and here are the problems I've had
on that platform:
1. If I open a SourceDataLine and leave it open for multiple (that is,
hundreds) of write() calls, with calls to drain() interspersed
periodically (as required by the design of my application), then I'll
eventually get a fraction of a second of a sound repeating every 5
seconds or so, independent of the continued calls to write() (which
succeed and cause new sounds to be played).
2. To deal with this, I tried creating a SourceDataLine for each
individual sound clip I need to play, call write(), then drain(), then
close(). But this introduces another problem: every once in a while,
there is an unexplained second or so of silence between sound clips.
The gap is too long to be explained by inopportune garbage collection.
I can maybe help with these two. They are both related. If you open a
SourceDataLine, you need to keep sending it data to keep it's buffer
full or you will have these problems. You might consider using the Clip
interface instead. You don't have to keep feeding it.
--
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