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<TITLE>RE: full duplex sound (was: Newbie question)</TITLE>
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<P><FONT SIZE=2>Hi Lex</FONT>
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<P><FONT SIZE=2>I did get a little further. I could read audio using SoundInputStream and I could write it using QueueSound. However, if I recorded some sound and queued it on QueueSound, stopped recordng and played the QueueSound as soon as I started recording agin the output stopped so I couldnt get full duplex going. Obviously i am doing something wrong!</FONT></P>
<P><FONT SIZE=2>Regards</FONT>
<BR><FONT SIZE=2>Bob </FONT>
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<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: lex@cc.gatech.edu</FONT>
<BR><FONT SIZE=2>To: squeak-dev@lists.squeakfoundation.org</FONT>
<BR><FONT SIZE=2>Sent: 13/11/2004 13:47</FONT>
<BR><FONT SIZE=2>Subject: full duplex sound (was: Newbie question)</FONT>
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<P><FONT SIZE=2>The full duplex audio should be fine, so long as you do not need the</FONT>
<BR><FONT SIZE=2>smallest possible latencies. Squeak has in fact been designed with</FONT>
<BR><FONT SIZE=2>audio applications in mind that need -- e.g., its garbage collector</FONT>
<BR><FONT SIZE=2>favors low pause-per-GC instead of low overall CPU percentage. I know</FONT>
<BR><FONT SIZE=2>of some people at GT who built a radio (can't remember if it was AM or</FONT>
<BR><FONT SIZE=2>FM) that read files from a swiki and then broadcast them. This radio</FONT>
<BR><FONT SIZE=2>application sounds simpler than what you are doing, but it suggests that</FONT>
<BR><FONT SIZE=2>you can build full audio apps in Squeak.</FONT>
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<P><FONT SIZE=2>When you say port I/O, is serial port access enough? If so, Squeak will</FONT>
<BR><FONT SIZE=2>do fine for you. Look at class SerialPort.</FONT>
</P>
<P><FONT SIZE=2>These aside, what symptom do you see when you try to play new sounds? </FONT>
<BR><FONT SIZE=2>Do you get silence, static, or a pre-debug window? I don't know many</FONT>
<BR><FONT SIZE=2>programming details of sound programming in Squeak, but if you post more</FONT>
<BR><FONT SIZE=2>details maybe someone else will recognize the problem.</FONT>
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<BR>
<P><FONT SIZE=2>Good luck overall! Squeak should be an excellent platform for you if</FONT>
<BR><FONT SIZE=2>you can deal with 1-10 ms latencies; you will be able to tweak your</FONT>
<BR><FONT SIZE=2>program very easily, even while it is running.</FONT>
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<P><FONT SIZE=2>Lex</FONT>
</P>
<BR>
<BR>
<P><FONT SIZE=2>PS -- Check out the IRC channel if you have not. It is EXCELLENT for</FONT>
<BR><FONT SIZE=2>people who are starting to use Squeak and thus will bump into all sorts</FONT>
<BR><FONT SIZE=2>of oddities and have lots of little questions.</FONT>
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