<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 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=FR link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello everyone, <o:p></o:p></p><p class=MsoNormal><span lang=EN-US>I tried integrating opus middleware on an STM32L4 microcontroller based project. First thing I noticed is the considerable amount of memory allocated by the opus_encoder_create function (nearly 40 kbytes if I recall). After modifying my project’s memory setting (mainly heap size adjustments), I could bypass some aspects of this problems. What I’m noticing now is the time needed for the encode function to treat a 20 ms frame (nearly 50 ms for a complexity of 0 which I guess is the lowest possible). So here are my questions : <br>1) what is the minimal encoder configuration possible for a minimal memory footprint ? <br>2) Considering that I’m using framing to dissociate a large buffer into small frames before passing them to the encode function. Is there a way to minimize encoding time ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>3) Is there a demo code for compressing PCM/WAV ?<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>Thanks in Advance. <br><br>Tarak Maamar<o:p></o:p></span></p></div></body></html>