Hey everyone, new to the forum, but am desperately in need of some help. I'm currently a student at Cape Audio College in Cape Town studying sound engineering. I am studying for my exam which is on Thursday this week and I've come across a paragraph in the chapter on Magnetism and Magnetic Tape Recording, and I can't make head nor tail of it. Here is the full paragraph and the questions I have about it follow: The study of magnetic tape is made more complex by the fact that tape does not have a linear transfer characteristic (1). Therefore, in the absence of any corrective system (2), a program (3) with a wide dynamic range when reproduced (4) will hardly reproduce the very low and high level recorded program (3), while low and high level programs will suffer non linear compression (5). Only the medium recorded program level content will be transferred linearly (6). Ok, so here are my questions. (1) I understand that tape does not have a linear transfer characteristic, but could someone please explain to me why, I think I understand why but if someone could maybe explain it to me in their terms I might understand it better. (2) By corrective system, they are referring to a DAW, like Pro Tools for instance, where a recorded waveform can be cut up and edited? (3) By program they mean? (4) Wide Dynamic Range I understand to be the difference between highest and lowest recorded levels? Just making 100% sure I'm applying that correctly here? (5) The program bit I can't get? Low and High Levels suffering non linear compression? If someone could explain the non linear compression bit to me i'd be very grateful, as I understand compression and the level bit to an extent, but in this instance I'm a little confused. (6) Finally, I'm a little confused as to how the medium level content can be transferred linearly, when it previously stated that tape does not have a linear transfer characteristic? I know that AC Bias can influence it's linearity, but it hasn't been stated here that it was applied in this case. I know this is probably a trivial set of questions to pose, but i'm really stressed and have a lot to get through by Thursday. I'm struggling here and am not piecing it together, any help would be much appreciated! Replies to this post here or via e-mail are very much welcome, thank you!