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Perfect Reconstruction using ISTFT

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SUDHAKAR MISHRA
SUDHAKAR MISHRA 2020-4-5
Hi members,
I am not able to do perfect reconstruction with istft function in matlab. Please see the following functions and point out if I am doing something wrong.
[normStimDB, tDB] = istft(baselineNormDB, EEG.srate, 'Window', sqrt(hann(250, 'periodic')), 'OverlapLength', 125, 'FFTLength', 250);
[timeFreqB2, freqB2, timeB2] = stft(normStimDB, EEG.srate, 'Window', sqrt(hann(250, 'periodic')), 'OverlapLength', 125, 'FFTLength', 250);
The COLA condition is also being satisfied which is required for the perfect reconstruction.

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