Re: [Audacity-nyquist] snd-average does not work
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From: Faisal ... <fmo...@gm...> - 2006-01-10 21:31:59
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Hello Alex I tried but I am still getting the same message for the plugin. By following your instruction for the prompt, I am now getting the same error as for the plugin. I hope that I am not such a pain but could it be the version of Nyquist or Audacity? On 1/10/06, Alex S. Brown <ale...@al...> wrote: > > You are almost there. Lisp needs parenthesis around functions and their > arguments. Replace this line: > snd-avg s blk blk OP-AVERAGE > > with this one: > (snd-avg s blk blk OP-AVERAGE) > > and you should be on your way! > > Likewise, when you put the command in at the Nyquist prompt with no > parenthesis > (like this: "snd-avg s 213 213 OP-AVERAGE"), Nyquist assumes that snd-avg > is a > variable, and you want to output its result. Since no such variable has > been > defined, it errors out. > > If you add the parenthesis (like this: "(snd-avg s 213 213 OP-AVERAGE)"), > Nyquist will look for a function named "snd-avg" and will pass the four > arguments into it (s, 213, 213, and OP-AVERAGE). This is what you want -- > it > should work. > > --Alex > > P.S. If you have programmed in other languages like BASIC or C, lisp take= s > a lot > of getting used to. Parentheses have a totally different purpose than in > any > other language I have seen, and they are the key to getting it right. If = I > see > something erroring out because of an unbound variable or invalid function= , > the > first thing I look for is bad parentheses, especially unmatched > parentheses. > > Quoting "Faisal ..." <fmo...@gm...>: > > > Hello Listers > > > > Thanks for your feedback so far but I am still having problems. I am > using > > Audacity 1.2.3 build 17-Nov-2004, forgot to mention in previous email. > > > > When I type the following in the Nyquist Prompt: > > snd-avg s 213 213 OP-AVERAGE > > > > This is what I get: > > > > *error: unbound variable - SND-AVG > > if continued: try evaluating symbol again > > 1> #(#<Sound: #27523a0> #<Sound: #2752628>) > > 1> 213 > > 1> 213 > > 1> 1 > > 1> [ gc: total 18640, 3675 free; samples 1KB, 0KB free ]* > > > > And I could not debug my plugin so I modified it slightly so that I can > do > > so. > > Here is the code: > > > > > > *;nyquist plug-in > > ;version 1 > > ;type process > > ;name "sound averager" > > ;action "sound averager" > > ;info "By Faisal Mooraby" > > ;control blk "Block Size" real "" 100.0 0.0 10000.0 > > ;; Note: this effect will use up memory proportional to > > ;; delay * count, since that many samples must be buffered > > ;; before the first block is freed.* > > > > *snd-avg s blk blk OP-AVERAGE > > * > > > > and that's what I get from the debuging output: > > > > *error: bad argument type - #(#<Sound: #27523a0> #<Sound: #2752628>) > > Function: #<Subr-SND-AVG: #f11970> > > Arguments: > > #(#<Sound: #27523a0> #<Sound: #2752628>) > > 213 > > 213 > > 1 > > 1> [ gc: total 18640, 3674 free; samples 1KB, 0KB free ] > > * > > Again, I appreciate your help. > > > > Faisal Mooraby > > ---------------------- > Alex S. Brown, PMP > ale...@al... > http://www.alexsbrown.com/ > > > ------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. Do you grep through log > files > for problems? Stop! Download the new AJAX search engine that makes > searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! > http://ads.osdn.com/?ad_id=3D7637&alloc_id=3D16865&op=3Dclick > _______________________________________________ > Audacity-nyquist mailing list > Aud...@li... > https://lists.sourceforge.net/lists/listinfo/audacity-nyquist > -- Faisal Mooraby |