Federico and Denis, Thank you for your answers! My request was based on observations on a notebook without external speakers. I repeated the whole thing again on a PC with external speakers and followed Federico's tips (symmetry, ear parallel to the speaker membranes, only one ear,...). I could hear a considerable sound cancellation. In this respect, Scilab does exactly what I initially expected. My "experiment" was simply unsuitable.
My request was naturally a minimal example. In the application, we are dealing with a larger number of channels (around 60). In order to find out to what extent the signals are amplifying or attenuating each other, it will probably be best to simply listen to the column sum of the matrix. Then I expect to get at least the theoretical result -- only mapping properties of the sound matrix. Regards Jens I trie your code And it sounds right !-) First on the left, then on the right, finally both simultaneously. I looks like it is what is expected; isn’t it ? Denis De : users <users-boun...@lists.scilab.org><mailto:users-boun...@lists.scilab.org> De la part de Jens Simon Strom Envoyé : mardi 19 décembre 2023 19:52 À : Users mailing list for Scilab <users@lists.scilab.org><mailto:users@lists.scilab.org> Objet : [Scilab-users] Noise canceling with playsnd( ) Hallo Scilab friends, My question is at the end of the comment. fs=20050; t=0:1/fs:1; f=440; a=sin(2*%pi*f*t); // harmonic a_=asin(a); // distorted silence=zeros(1,length(a)); y=[a, silence, a; silence, a_, -a]; playsnd(y,fs); // The 1st section (channel 2 silent) and // the 2nd one (channel 1 silent) sound as expected. // The 3rd section sounds like the 1st, no silence! // Why? Regards Jens This email and any attachments are intended solely for the use of the individual or entity to whom it is addressed and may be confidential and/or privileged. If you are not one of the named recipients or have received this email in error, (i) you should not read, disclose, or copy it, (ii) please notify sender of your receipt by reply email and delete this email and all attachments, (iii) Dassault Systèmes does not accept or assume any liability or responsibility for any use of or reliance on this email. Please be informed that your personal data are processed according to our data privacy policy as described on our website. Should you have any questions related to personal data protection, please contact 3DS Data Protection Officer https://www.3ds.com/privacy-policy/contact/ This email and any attachments are intended solely for the use of the individual or entity to whom it is addressed and may be confidential and/or privileged. If you are not one of the named recipients or have received this email in error, (i) you should not read, disclose, or copy it, (ii) please notify sender of your receipt by reply email and delete this email and all attachments, (iii) Dassault Systèmes does not accept or assume any liability or responsibility for any use of or reliance on this email. Please be informed that your personal data are processed according to our data privacy policy as described on our website. Should you have any questions related to personal data protection, please contact 3DS Data Protection Officer https://www.3ds.com/privacy-policy/contact/ _______________________________________________ users mailing list - users@lists.scilab.org<mailto:users@lists.scilab.org> Click here to unsubscribe: <mailto:users-unsubscr...@lists.scilab.org><mailto:users-unsubscr...@lists.scilab.org> https://lists.scilab.org/mailman/listinfo/users This email and any attachments are intended solely for the use of the individual or entity to whom it is addressed and may be confidential and/or privileged. If you are not one of the named recipients or have received this email in error, (i) you should not read, disclose, or copy it, (ii) please notify sender of your receipt by reply email and delete this email and all attachments, (iii) Dassault Systèmes does not accept or assume any liability or responsibility for any use of or reliance on this email. Please be informed that your personal data are processed according to our data privacy policy as described on our website. Should you have any questions related to personal data protection, please contact 3DS Data Protection Officer https://www.3ds.com/privacy-policy/contact/
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