since it sounds speed related I would suggest you check your tires
(alignment, tread wear, balance etc). You didn't post much info on exactly
where the noise was coming from but does it sound like it is coming from the
engine or underneath? What so you mean by winding? (whining?) Could it be a
belt?. When you say faster did you mean engine RPM or actual speed of the
vehicle? Post more details and you may get the answer you are looking for.