Open Access
Table 5.
Summary of a GLM assessing the effects of frequency, loudness, pseudo-calibration status, device ID, and the use of the Frequency Analyzer feature on differences in SPL measurements from a standard SLM in the Bolden application.
| Term | Estimate | Std. Error | t value | Pr(> |t|) |
|---|---|---|---|---|
| (Intercept) | −21.721704 | 6.807244 | −3.191 | 0.001504 |
| Frequency | 0.317027 | 0.953012 | 0.333 | 0.739527 |
| Loudness | 0.285037 | 0.078056 | 3.652 | 0.000287 |
| Pseudo-calibration | 14.522581 | 7.016180 | 2.070 | 0.038958 |
| Frequency Analyzer | −3.095457 | 2.970952 | −1.042 | 0.297939 |
| Device | 2.899968 | 6.480437 | 0.447 | 0.654703 |
| Frequency × Loudness | 0.012062 | 0.011518 | 1.047 | 0.295483 |
| Frequency × Pseudo-calibration | −2.471041 | 0.988237 | −2.500 | 0.012710 |
| Loudness × Pseudo-calibration | −0.109883 | 0.081082 | −1.355 | 0.175938 |
| Loudness × Frequency Analyzer | 0.023004 | 0.036588 | 0.629 | 0.529799 |
| Frequency × Device | 1.419707 | 0.885051 | 1.604 | 0.109300 |
| Loudness × Device | 0.004048 | 0.071836 | 0.056 | 0.955089 |
| Pseudo-calibration × Device | 9.144370 | 2.445285 | 3.740 | 0.000205 |
| Frequency Analyzer × Device | 10.525935 | 4.023482 | 2.616 | 0.009152 |
| Frequency × Loudness × Pseudo-calibration | 0.034504 | 0.011896 | 2.901 | 0.003883 |
| Frequency × Loudness × Device | −0.036719 | 0.010288 | −3.569 | 0.000391 |
| Frequency × Pseudo-calibration × Device | −0.746023 | 0.347093 | −2.149 | 0.032067 |
| Loudness × Frequency Analyzer × Device | −0.129937 | 0.049706 | −2.614 | 0.009206 |
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