output samples not correct

[ghost]

I think there is a problem with the stft/istft functions or maybe some other problem.

If I have a test wav file of 10 seconds, sampled at 44.1kHz, then the number of input samples is going to be 10 x 44100 = 441000 samples. However, the output wav files have 441088 samples. I noticed that by changing the FFT size, the last value, for example 88, changes to some other numbers, either a bit below or above 100. But anyway, there seems to be a problem in the reconstruction of the data, this is not additive components if I can't get back the original amount of samples as my input. Is there anyway to fix this?

thank you!