📄 calc_parameters.html
字号:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"><html xmlns:mwsh="http://www.mathworks.com/namespace/mcode/v1/syntaxhighlight.dtd"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <!--This HTML is auto-generated from an M-file.To make changes, update the M-file and republish this document. --> <title>calc_parameters.m</title> <meta name="generator" content="MATLAB 7.4"> <meta name="date" content="2008-05-08"> <meta name="m-file" content="calc_parameters"><style>body { background-color: white; margin:10px;}h1 { color: #990000; font-size: x-large;}h2 { color: #990000; font-size: medium;}/* Make the text shrink to fit narrow windows, but not stretch too far in wide windows. */ p,h1,h2,div.content div { max-width: 600px; /* Hack for IE6 */ width: auto !important; width: 600px;}pre.codeinput { background: #EEEEEE; padding: 10px;}@media print { pre.codeinput {word-wrap:break-word; width:100%;}} span.keyword {color: #0000FF}span.comment {color: #228B22}span.string {color: #A020F0}span.untermstring {color: #B20000}span.syscmd {color: #B28C00}pre.codeoutput { color: #666666; padding: 10px;}pre.error { color: red;}p.footer { text-align: right; font-size: xx-small; font-weight: lighter; font-style: italic; color: gray;} </style></head> <body> <div class="content"> <h1>calc_parameters.m</h1> <introduction></introduction> <h2>Contents</h2> <div> <ul> <li><a href="#2">Center frequency selection</a></li> <li><a href="#4">Quality and band pass gain vector creation</a></li> </ul> </div> <p>This function takes the user input and makes it a bit more usable for the rest of the functions. Given the lowest center frequency, highest center frequency, a filter scalar or vector, a band pass gain scalar or vector, and the number of filters in the equalizer, return a vector of angular frequencies, qualities, band pass gains, and a scalar representing the number of filters. </p><pre class="codeinput"><span class="keyword">function</span> [w0,q0,hbp,n] = calc_parameters(f01,f02,q0,hbp,n)</pre><h2>Center frequency selection<a name="2"></a></h2> <p>We would like to have the center frequencies of the fitlers evenly spaced (logarithmically) in frequency. The follwoing code accomplishes this. </p><pre class="codeinput"> <span class="comment">%for the specificed frequency range, choose the</span> <span class="comment">%cetner frequencies of the filters.</span> low_freq = log10(2*pi*f01); high_freq = log10(2*pi*f02); w0 = logspace(low_freq,high_freq,n);</pre><h2>Quality and band pass gain vector creation<a name="4"></a></h2> <p>The user can enter either a scalar or a vector for the quality of each filter. If a scalar is entered, the scalar will be copied to a vector of length n, where n reprensents the number of fitlers in the equalizer </p><pre class="codeinput"> <span class="comment">%if the user supplied a single value, extend the vector</span> <span class="comment">%to n. each entry will be the specified value.</span> <span class="keyword">if</span> (length(q0) < n) <span class="keyword">for</span> filter_n = 1:n q0(filter_n) = q0(1); <span class="keyword">end</span> <span class="keyword">end</span> <span class="comment">%same idea here</span> <span class="keyword">if</span> (length(hbp) < n) <span class="keyword">for</span> filter_n = 1:n hbp(filter_n) = hbp(1); <span class="keyword">end</span> <span class="keyword">end</span> <span class="comment">%haha</span> n = n;<span class="keyword">end</span></pre><p class="footer"><br> Published with MATLAB® 7.4<br></p> </div> <!--##### SOURCE BEGIN #####
%% calc_parameters.m
%%
% This function takes the user input and makes it a bit more usable for the
% rest of the functions. Given the lowest center frequency, highest center
% frequency, a filter scalar or vector, a band pass gain scalar or vector,
% and the number of filters in the equalizer, return a vector of angular
% frequencies, qualities, band pass gains, and a scalar representing the
% number of filters.
function [w0,q0,hbp,n] = calc_parameters(f01,f02,q0,hbp,n)
%%
%% Center frequency selection
%%
% We would like to have the center frequencies of the fitlers evenly
% spaced (logarithmically) in frequency. The follwoing code accomplishes
% this.
%for the specificed frequency range, choose the
%cetner frequencies of the filters.
low_freq = log10(2*pi*f01);
high_freq = log10(2*pi*f02);
w0 = logspace(low_freq,high_freq,n);
%%
%% Quality and band pass gain vector creation
%%
% The user can enter either a scalar or a vector for the quality of each
% filter. If a scalar is entered, the scalar will be copied to a vector of
% length n, where n reprensents the number of fitlers in the equalizer
%if the user supplied a single value, extend the vector
%to n. each entry will be the specified value.
if (length(q0) < n)
for filter_n = 1:n
q0(filter_n) = q0(1);
end
end
%same idea here
if (length(hbp) < n)
for filter_n = 1:n
hbp(filter_n) = hbp(1);
end
end
%haha
n = n;
end
%%
##### SOURCE END #####--> </body></html>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -