Number of Significant Harmonics Highest Frequency Bright Sound 11 3000 Dark Sound 8 1875
Number of Significant Harmonics Highest Frequency Bright Sound 17 4300 Dark Sound 6 1440
The data for the poor sounds is much more difficult to show in a table or other graphic form. Therefore I will describe the results.
The puffed cheeks exercises, much like the trumpet examples produced very bright sounds and poor attacks, but a relatively characteristic tone without too much distortion. The puffed cheeks both made sounds with close to 20 significant harmonics, and a generally brash tone, but it was not unrecognizable, mearly biting.
In the experiments done with a closed jaw, both trombones produced a large number of non-harmonic pitches in the range between 5200 Hz and 5700 Hz. This came across graphically as a large block of harmonics between 200 dB and 30 dB instead of the normal formation which shows a series of stalagmite projections at regular intervals. There were also two harmonics in each that were not nearly as relevant as is normal in a characteristic tone. Trombone 1 was missing the 5th and 6th harmonics, trombone 2 the 4th and 5th.
In the experiments done where the instrumentalists were asked to make a bad sound, the results were very similar to the closed jaw exercises. Again the noise harmonics were in the 5000-6000 range, and the 5th harmonic was not significant in either of the trombones' tones.