<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hello,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I’m experimenting with the rsound package and ran into a problem. I can play the sound but I can’t write it into a wav file with rs-write.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Here a little code to reproduce the error on my machine Thinkpad, Windows 7, 64bit:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>#lang racket<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(require (planet clements/rsound:4:4))<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>; setting of host-api for sound otherwise no sound is heard<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(host-api 'paMME)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>; sample rate for host-api set in OS settings<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(define frame-rate 44100)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>(define tone (make-tone 440 1 frame-rate))<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>tone<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(play tone)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(rs-write tone "test-tone")<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Output:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>(rsound #<s16vector> 0 44100 44100.0)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Error:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>integer->integer-bytes: contract violation<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> expected: exact-integer?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> given: 44100.0<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> argument position: 1st<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> other arguments...:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> 4<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> #f<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> #f<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The error seems strange to me, since frame-rate is an exact integer, but obviously is changed into a real by make-tone. Is there any help?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Robert<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>