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<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>CMSIS-DSP DC offset problem</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/48078/cmsis-dsp-dc-offset-problem</link><description> Hi everyone, 
 I am developing a sound acquisition node with MEMS-Microphone and everything works fine(Windowing, Filtering..) except that the FFT output not as it&amp;#39;s supposed to be! even it&amp;#39;s work and frequencies in the input data is detected good, but</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: CMSIS-DSP DC offset problem</title><link>https://community.arm.com/thread/169367?ContentTypeID=1</link><pubDate>Tue, 29 Dec 2020 09:54:20 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:b7248d8f-aaa6-40f5-98eb-495a10879c73</guid><dc:creator>Rashad_Shubita</dc:creator><description>&lt;p&gt;&lt;span class="uiOutputText" dir="ltr"&gt;no good result till now:( also, why the other frequency pins have a value?&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span class="uiOutputText" dir="ltr"&gt;Any help?&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: CMSIS-DSP DC offset problem</title><link>https://community.arm.com/thread/168709?ContentTypeID=1</link><pubDate>Wed, 18 Nov 2020 22:57:41 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:4e338b9f-1e97-41de-913e-00039bcf9e53</guid><dc:creator>Rashad_Shubita</dc:creator><description>&lt;p&gt;I already use HPF with cut-off frequency ~10Hz and also try to average the PCM data before windowing&amp;amp;filtering but still approximately the same!&lt;br /&gt;Any suggestion?&lt;br /&gt;&lt;img alt=" " src="/resized-image/__size/320x240/__key/communityserver-discussions-components-files/471/CaptureP2_5F00_4.PNG" /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>