<br><br><div class="gmail_quote">On Wed, Jul 27, 2011 at 11:11 PM, Hans-Christoph Steiner <span dir="ltr"><<a href="mailto:hans@at.or.at">hans@at.or.at</a>></span> wrote:</div><div class="gmail_quote"><br></div><div class="gmail_quote">
<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">>> I think the big question that needs to be answered before this gets included is: </span></div><div class="gmail_quote">
<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">>> can this be done without majoring impacting 32-bit operation?</span></div><div class="gmail_quote">
<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><br></span></div><div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">The intention is: </span></div>
<div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">- Pd source code </span><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">with unaltered functionality </span></div>
<div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "></span><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">- compilable with pd floattype '</span><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">float' or 'double' </span></div>
<div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "></span><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">- as little conditional compilation as possible </span></div>
<div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">- no performance loss respective to current Pd </span></div><div class="gmail_quote">
<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><br></span></div><div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">Based on test results I think it's possible to rewrite the code in such a way that single precision Pd will not be affected in any way. I still have to rewrite tabosc~ which also uses Hoeldrich's method, this will be easy. </span></div>
<div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><br></span></div><div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">>> As for 64-bit floats to output, a quick hack to get things working is </span></div>
<div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">>> to just hammer samples down to 32-bits...</span></div><div class="gmail_quote">
<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><br></span></div><div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">I was looking for a suitable spot in the code to do this. First looked at dac~, but since there may be many dac~s instantiated this is not most efficient. Then I found sys_send_dacs(), where the integrated sample values are checked for max absolute value. It is however not possible to do a simple typecast here because samples are just stored back into *sys_soundin and *sys_soundout which are type t_sample. Maybe dac~ should integrate samplevalues in an intermediate vector of type t_sample. And then, in </span><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">sys_send_dacs(), integrated samples could be checked, cast to float and stored into </span><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">*sys_soundout vector of type float. And something similar for the input. That's what I'll try. </span></div>
<div class="gmail_quote"><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><br></span></div><div class="gmail_quote"><font class="Apple-style-span" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;">Katja</span></font></div>