Solve these clues to fill the grid.
- An alloy of iron with small amounts of carbon
- 3 Across
- How loud something is, or how much space it fills
- 5 Across
- A remedy for hearing loss or deafness
- 7 Across
- Electronic equipment that increases strength of signals passing through it
- 9 Across
- A straight line connecting two points on a curve (plural)
- 12 Across
- Calibrating something to a standard frequency
- 14 Across
- The basic ___ unit in a piece of music
- 16 Across
- The lowest part of the musical range
- 1 Down
- A thermoplastic polyamide
- 2 Down
- A phenomenon that follows and is caused by some previous phenomenon (plural)
- 4 Down
- A car that is powered by ___
- 6 Down
- Style of music with improvisation, born in New Orleans
- 8 Down
- Carried on by or for the people at large
- 10 Down
- A lightweight cord (plural)
- 11 Down
- A musical composition for one voice or instrument
- 13 Down
- To sound the strings of
- 15 Down