Loading data too slow

[CopyNinja1999]

How long do you usually load the data? I have approximately 3000h data which takes me more than 1 hour to load the data and no idea which part caused this. Any ideas to speed it up? Does it help to apply larger nj?

[cantabile-kwok]

I'd say I will be very satisfied if it takes only 1+ hour to load such large amount of data. I currently have only 240h hours of data and it already takes more than 1 hour before training starts. I think the main reason is because there are toooooo many small files (.qnt.pt, .phn.txt, ...) Iterating through these files and reading them certainly is expensive particularly for large file systems.