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Tools: Tune: EQ: Matlab compatibility fix for parametric EQ 

Every endif is changed to end. The endif works only in Octave.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
This commit is contained in:
Seppo Ingalsuo 2023-01-24 11:25:20 +02:00 committed by Kai Vehmanen
parent a0df1a6120
commit 5aa9a9e484
1 changed files with 11 additions and 11 deletions
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22
tools/tune/eq/eq_define_parametric_eq.m
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@ -135,7 +135,7 @@ function [b, a] = peak_2nd(fhz, gdb, Q, fs)
b = [A * A, 0, 0] b = [A * A, 0, 0]
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
alpha = sin(wc)/(2*Q); alpha = sin(wc)/(2*Q);
b0 = 1 + alpha * A; b0 = 1 + alpha * A;
@ -163,7 +163,7 @@ function [b, a] = high_pass_2nd_reasonance(f, resonance, fs)
b = [1 - cutoff, 0, 0]; b = [1 - cutoff, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
% Compute biquad coefficients for highpass filter % Compute biquad coefficients for highpass filter
resonance = max(0.0, resonance); % can't go negative resonance = max(0.0, resonance); % can't go negative
@ -199,7 +199,7 @@ function [b, a] = low_pass_2nd_reasonance(f, resonance, fs)
b = [cutoff, 0, 0]; b = [cutoff, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
% Compute biquad coefficients for lowpass filter % Compute biquad coefficients for lowpass filter
resonance = max(0.0, resonance); % can't go negative resonance = max(0.0, resonance); % can't go negative
@ -239,7 +239,7 @@ function [b, a] = band_pass_2nd(f, Q, fs)
b = [0, 0, 0]; b = [0, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
if (Q <= 0) if (Q <= 0)
% When Q = 0, the above formulas have problems. If we % When Q = 0, the above formulas have problems. If we
% look at the z-transform, we can see that the limit % look at the z-transform, we can see that the limit
@ -247,7 +247,7 @@ function [b, a] = band_pass_2nd(f, Q, fs)
b = [1, 0, 0]; b = [1, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
w0 = pi * frequency; w0 = pi * frequency;
alpha = sin(w0) / (2 * Q); alpha = sin(w0) / (2 * Q);
@ -276,7 +276,7 @@ function [b, a] = notch_2nd(f, Q, fs)
b = [1, 0, 0]; b = [1, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
if Q <= 0 if Q <= 0
% When Q = 0, the above formulas have problems. If we % When Q = 0, the above formulas have problems. If we
% look at the z-transform, we can see that the limit % look at the z-transform, we can see that the limit
@ -284,7 +284,7 @@ function [b, a] = notch_2nd(f, Q, fs)
b = [0, 0, 0]; b = [0, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
w0 = pi * frequency; w0 = pi * frequency;
alpha = sin(w0) / (2 * Q); alpha = sin(w0) / (2 * Q);
@ -313,13 +313,13 @@ function [b, a] = low_shelf_2nd_google(f, db_gain, fs)
b = [A * A, 0, 0]; b = [A * A, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
if (frequency <= 0) if (frequency <= 0)
% When frequency is 0, the z-transform is 1. % When frequency is 0, the z-transform is 1.
b = [1, 0, 0]; b = [1, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
w0 = pi * frequency; w0 = pi * frequency;
S = 1; % filter slope (1 is max value) S = 1; % filter slope (1 is max value)
@ -353,13 +353,13 @@ function [b, a] = high_shelf_2nd_google(f, db_gain, fs)
b = [1, 0, 0]; b = [1, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
if (frequency <= 0) if (frequency <= 0)
% When frequency = 0, the filter is just a gain, A^2. % When frequency = 0, the filter is just a gain, A^2.
b = [A * A, 0, 0]; b = [A * A, 0, 0];
a = [1, 0, 0]; a = [1, 0, 0];
return; return;
endif end
w0 = pi * frequency; w0 = pi * frequency;
S = 1; % filter slope (1 is max value) S = 1; % filter slope (1 is max value)