I have an audio file of sampling frequency as 16 kHz. Now I would like to read it and split its samples into four range. Namely:
0 kHz - 1 kHz 1 kHz - 2 kHz 2 kHz - 4 kHz 4 kHz - 8 kHz
I have come about the following code but I am not sure if it is correct? I wanted to know if there is any other way.
[signal,fs]=audioread('003.wav'); SigFD = (signal); n = length(signal); % number of samples deltaF = fs/n; % frequency resolution F = [0:floor(n/2)-1, -(floor(n/2)):-1]*deltaF; % frequency vector lowF = 0; % lowF and highF defines one of the range highF = 1000; part1Range = abs(F)>lowF&abs(F)<highF; Fpart1 = F(part1Range); Sig1FD = SigFD(part1Range);
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Fs = 1.6E+4; % Sampling Frequency (Hz) Fn = Fs/2; % Nyquist Frequency (Hz) Fnotch = 1.5E3; % Notch Frequency (Hz) BW = 1E+3; % Passband Width (Hz) Ws = [Fnotch-BW/2-1 Fnotch+BW/2+1]/Fn; % Passband Frequency Vector (Normalised) Wp = [Fnotch-BW/2-5 Fnotch+BW/2+5]/Fn; % Stopband Frequency Vector (Normalised) Rp = 1; % Passband Ripple (dB) Rs = 150;
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