miniDSP EARS, Руководство пользователя

Страница: 14 / 24

miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice
14
2.6.5 Changing the calibration file
If you forgot to load a calibration file or had the wrong one loaded (i.e. left instead of right or vice versa), REW
allows you to set or change the calibration file after taking a measurement. Just click on the “Change Cal…”
button underneath the measurement thumbnail on the left-hand side. Then select the correct calibration file.
2.6.6 Measuring at higher SPLs
If you measure headphones at a reference SPL higher than 84 dB, or IEMs at a reference SPL higher than 94 dB,
you may find that the measurement signal clips. In that case:
1. Reduce the analog gain of the EARS (see page 7).
2. Reduce the SPL calibration target by the amount that you decreased the analog gain. For example, if you
reduced the gain from 18 to 12 dB, change the SPL calibration target from e.g.
– 40 to – 46.
3. Recalibrate REW using a 300 Hz sine wave and its SPL meter.