Quick Answer
Sound traveling ten times faster would arrive much sooner after events occur, but it would not make sound faster than light. The pitch of a source would depend on frequency rather than simply on propagation speed, while shock waves and acoustics would change substantially.
Sound is a mechanical wave. Its speed depends on the properties of the medium, especially its density and compressibility.
You hear things sooner
If sound traveled ten times faster, delays across rooms and cities would shrink dramatically. Distant thunder would arrive much closer to the visual event that produced it.
Pitch is not simply speed
Frequency is the number of wave cycles per second. Changing propagation speed changes wavelength for a given frequency, not automatically the frequency produced by a source.
Shock waves change
Supersonic motion is defined relative to the local speed of sound. If sound became much faster, ordinary aircraft would have a much lower Mach number and shock-wave behavior would change.
Explosions
Pressure disturbances would propagate faster, changing how blasts are experienced at distance. The energy of an explosion would not automatically increase just because the wave moved faster.
Established scienceThe speed of sound and the speed of light are fundamentally different quantities. Changing one does not automatically change the other.
The bottom line
A ten-times-faster sound speed would reshape acoustics and shock waves, but it would not let sound compete with light for communication speed.
A note on our approach: Every article on WhatIfLab separates what current science establishes from what remains genuinely speculative. Where we cite a figure or finding, it reflects published, mainstream research at the time of writing — not a prediction dressed up as fact.