File:Notch 50Hz audio filter.svg
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![File:Notch 50Hz audio filter.svg](https://upload.wikimedia.org/wikipedia/commons/thumb/4/43/Notch_50Hz_audio_filter.svg/730px-Notch_50Hz_audio_filter.svg.png?20240705140019)
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[edit]DescriptionNotch 50Hz audio filter.svg |
English: The frequency response of a digital filter to remove the 50Hz mains hum.
Русский: Амплитудно-частотная характеристика цифрового фильтра для подавления гула 50 Гц. |
Date | |
Source | Own work |
Author |
I created it with the following Matlab code: N=20000; %resolution
fmax=20000; %max frequency of audible sound [Hz]
[num,den] = iirnotch(50/fmax,10/fmax);
[H,F]=freqz(num,den,N,2*fmax);
H=20*log10(abs(H));
semilogx(F,H,'LineWidth',2);
axis([10 fmax -20 5]);
xlabel('frequency [Hz]');
ylabel('amplitude [dB]');
grid on;
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[edit]I, the copyright holder of this work, hereby publish it under the following licenses:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:00, 5 July 2024 | ![]() | 801 × 658 (2 KB) | Д.Ильин (talk | contribs) | Optimization |
19:26, 4 November 2007 | ![]() | 461 × 346 (166 KB) | Alejo2083 (talk | contribs) | {{Information |Description=the frequency response of a digital filter to remove the 50Hz mains hum. I created it with the following Matlab code: <source lang="Matlab"> N=20000; %resolution fmax=20000; %max frequency of audible sound [ |
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Width | 212mm |
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Height | 174mm |