If you were to travel through space at the speed of sound (Mach 1), you would not perceive any sound because space is a vacuum. Sound requires a medium, such as air, water, or solids, to travel through. In the absence of a medium, like the near-vacuum conditions of space, there would be no air molecules to vibrate and transmit sound waves. Therefore, you would experience silence.
In space, the absence of air means there is no medium for sound propagation, so there would be no sound generated by your movement or any other sources. However, it's important to note that there may be other vibrations or sounds generated by the spacecraft or equipment inside it, but these would not be heard directly in the absence of a medium for sound transmission.