calculate the Schroeder energy decay curve:

Question

Hyungeun Yun 2021-2-9

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https://ww2.mathworks.cn/matlabcentral/answers/740982-calculate-the-schroeder-energy-decay-curve

回答： Nipun 2024-6-7

I am trying to understand these questions,

i have wav file and how could i make "for loop" and how could i make formula

1.Calculate the total energy present in the whole RIR as above. You will need to use a “for loop”.

2.Create an empty array of zero values that is the same length as the RIR file (in samples):

EDC = zeros(1,length(RIR));

3.Create a “for loop” to count from sample n = 1 (the start of the file) to sample n = N (the end of the file).

4.On each iteration of the for loop, calculate the energy level remaining in the RIR and save it to EDC sample ‘n’.

EDC(n) = sum(RIR(n:end).^2);

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Answer 1

Nipun 2024-6-7

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https://ww2.mathworks.cn/matlabcentral/answers/740982-calculate-the-schroeder-energy-decay-curve#answer_1468691

在 MATLAB Online 中打开

Hi Hyungeun,

I understand that you want to calculate the total energy in a WAV file using a "for loop" in MATLAB. Here is how you may do it, based on the shared information:

% Load the RIR file
[RIR, fs] = audioread('your_file.wav');
% Calculate the total energy in the RIR
totalEnergy = sum(RIR.^2);
% Create an empty array for EDC
EDC = zeros(1, length(RIR));
% Calculate the energy decay curve
for n = 1:length(RIR)
    EDC(n) = sum(RIR(n:end).^2);
end
% Optionally, plot the EDC
plot(EDC);
title('Energy Decay Curve');
xlabel('Sample');
ylabel('Energy');