Research Article
A Structure Design Method for Reduction of MRI Acoustic Noise
Table 4
Maximum SPL reductions of the frequency bands of interest in the central gap by applying horn structures.
| Frequency bands of interest | 100–140 Hz | 200–240 Hz | 305–345 Hz | 660–720 Hz |
| Selected criteria (dB) | 7.0 | 1.0 | 0.8 | 2.0 | Optimal horn length (cm) | 50–80 | 50–100 | 35–55 | 55 |
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