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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by Fabou[/i] [br]Hello, I am a researcher in biology working on a pest that burrow inside corm of plants. I have a sound recording of the signal corresponding to the pest vs a lot of noise : [img]/ftp/forum_and_kbase/Images/sparklineBis.jpg[/img] Here is the Frequency/Amplitude graph of the different pest signals (color line) vs the noise (black line). [img]/ftp/forum_and_kbase/Images/Attenuated vs non attenuatedBis.jpg[/img] We can see a peak for the pest signal between 60 Hz and 600 Hz that cannot be seen for the noise. I want to analyse a lot of different sound records in order to detect the pest automatically in these records. I have heard about an adaptive (or adapted?) filter which takes for input the Frequency/Amplitude of the pest signal and compare it (using FFT transformations) to the whole recording, and when there is a pest signal in the recording, the probability given by the filter reach a higher threshold. Do you have an idea of how to do that with OriginPro 8 ? Thanks in advance for your answers. Best regards, [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.