AKM AKD4953A-B, Manual

Page: 17 / 64

[AKD4953A-B]
<KM104800> 2010/10
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1-5-1. parameter Setting
(1) Please set a parameter of each Filter.
Parameter Function Setting Range
Sampling Rate Sampling frequency (fs) 7350Hz ≤ fs ≤ 48000Hz
HPF
Cut Off Frequency
High pass filter cut off frequency fs/10000 ≤ Cut Off Frequency ≤ (0.497 * fs)
LPF
Cut Off Frequency
Low pass filter cut off frequency fs/20 ≤ Cut Off Frequency ≤ (0.497 * fs)
5 Band Equalizer
EQ1-5 Center Frequency
EQ1-5 Center Frequency 0Hz ≤ Center Frequency < (0.497 * fs)
EQ1-5 Band Width
EQ1-5 Band Width (Note 1) 1Hz ≤ Band Width < (0.497 * fs)
EQ1-5 Gain
EQ1-5 Gain (Note 2) -1 ≤ Gain < 3
Note 1. A gain difference is a bandwidth of 3dB from center frequency.
Note 2. When a gain is smaller than 0 , EQ becomes a notch filter.
(2) “FIL3”, “EQ0”, “LPF”, “HPF”, “HPFAD”, “EQ1”, “EQ2”, “EQ3”, “EQ4”, “EQ5” Please set ON/OFF of
Filter with a check button. When checked it, Filter becomes ON. When “Notch Filter Auto Correction” is checked,
perform automatic correction of the center frequency of the notch filter is executed. (“1-5-4. automatic correction
of the center frequency of a notch filter”)
Figure 15. Filter ON/OFF setting button