| 1 | Now we are working with pure sound. | |
| 2 | That is, it generates one pure tone or frequency at a time. | |
| 3 | Musicians had no advantage when it came to pure tone thresholds. | |
| 4 | Acoustics - Reference zero for the calibration of audiometric equipment - Part 1 : reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones. | |
| 5 | In additive synthesis, pure tones are added together to create more complex composite timbres . |