Degree(°) | Theoretical value(Hz) | Frequency spectrum | Spectrogram | ||
---|---|---|---|---|---|
Measured value (Hz) | Error(%) | Measured value (Hz) | Error(%) | ||
0 | 2,827 | 2,640 | 6.6 | 2,650 | 6.2 |
30 | 2,449 | 2,322 | 5.2 | 2,250 | 8.1 |
60 | 1,414 | 1,470 | 4.0 | 1,500 | 6.1 |
90 | 0 | 320 | - | 450 | - |