miniDSP IL-DSP, Руководство пользователя

Страница: 12 / 18

12
PEAK
This filter creates a dip or a peak in the frequency response. If the gain is
positive, the filter boosts a frequency region around the specified frequency.
See the left side of this graph:
If the gain is negative, the filter cuts a frequency range. On the right side
above we have used negative gain, with a narrow frequency range set by
using a high value of Q.
LOW_SHELF and HIGH_SHELF
A low shelf filter reduces the gain below the specified frequency. On the left
side of the graph below, we have used a low shelf filter with positive gain to
provide a gentle bass boost:
On the right side, we have used a high shelf filter with negative gain to cut
high frequencies by about 10 dB. The Q shown is higher than you usually use
for this type of filter.