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AnuragEnhanceTarget,
AnuragDampenTarget
This commit is contained in:
Arthur Lu
2021-12-10 18:31:42 -08:00
parent f4e1a0e4de
commit fdbb99183c
4 changed files with 1 additions and 2 deletions
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33
src/NotWorking/AnuragDampenTarget.m
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function output_x = AnuragDampenTarget(x, Fs,LOW, MID, HIGH)
%Dampen a range of frequencies a percentage around the target frequency
%Also maintain the other frequencies so that the target is muted
%percentage is expressed as a number between 0 and 1.
%target is the midpoint of the frequency range to dampen
%x and Fs are the signal and frequency
% CONTRIBUTORS:
% Anurag Jadhav: function creator
% Detailed explanation goes here
TARGET = MID;
AreaPercentage = 0.15;
len = length(x); %get length of the input
F = Fs * ((-len/2) : ((len/2) - 1)) / len;
lenf = length(F);
Mod_Freq = fftshift(fft(x)); %Fourier Transform of the input signal
output = zeros([1,lenf]); % zero array of size Mod_freq
%set the bounds
lowerBound = (1-AreaPercentage) * TARGET;
upperBound = (1+AreaPercentage) * TARGET;
%% Dampen the target frequencies and maintain the others
for n = 1:lenf
if ((lowerBound < abs(F(n))) && abs(F(n)) < upperBound)
output(n) = 0.5;
else
output(n) = 1;
end
end
%%Filter the original signal and transform
filtered_Mod_Freq = fftshift(Mod_Freq .* output);
output_x = real(ifft(filtered_Mod_Freq));
end

34
src/NotWorking/AnuragEnhanceTarget.m
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function output_x = AnuragEnchanceTarget(x, Fs,LOW, MID, HIGH)
%Amplify a range of frequencies a percentage around the target frequency
%Also damnpen the other frequencies so that the target is easier to hear
%percentage is expressed as a number between 0 and 1.
%target is the midpoint of the frequency range to amplify
%x and Fs are the signal and frequency
% CONTRIBUTORS:
% Anurag Jadhav: function creator
% Detailed explanation goes here
TARGET = MID;
AreaPercentage = 0.15;
len = length(x); %get length of the input
F = Fs * ((-len/2) : ((len/2) - 1)) / len;
lenf = length(F);
Mod_Freq = fftshift(fft(x)); %Fourier Transform of the input signal
output = zeros([1,lenf]); % zero array of size Mod_freq
%set the bounds
lowerBound = (1-AreaPercentage) * TARGET;
upperBound = (1+AreaPercentage) * TARGET;
%% Amplify the target frequencies and dampen the others
for n = 1:lenf
if ((lowerBound < abs(F(n))) && abs(F(n)) < upperBound)
output(n) = 2;
else
output(n) = 0.75;
end
end
%%Filter the original signal and transform
filtered_Mod_Freq = fftshift(Mod_Freq .* output);
output_x = real(ifft(filtered_Mod_Freq));
end