541311
27
Zoom out
Zoom in
Previous page
1/66
Next page
4.2 The Edit View 27
A low-pass filter is used to remove the higher spectral components of the signal while leaving
the lower components unchanged. The frequency at which attenuation begins to take effect is called
the cutoff frequency and it is controlled using the Frequency knob. In a resonant filter, frequencies
located around the cutoff frequency can also be emphasized by an amount called the quality factor
or Q-factor of the filter as illustrated by Figure 10. This parameter is adjusted using the Resonance
knob. The higher the Q-factor, the louder and sharper the response of the filter around the cutoff
frequency. When the Q-factor is set to 1 (Q knob fully turned to the left), there is no emphasis
around the cutoff frequency and the attenuation is -3dB at the cutoff frequency. The attenuation for
frequencies located above the cutoff frequency depends on the order of the filter which is set by the
Order menu, a slope of -12dB/Oct corresponding to a second order filter and a slope of -24dB/Oct
to a fourth order filter.
Resonant High-Pass Filter
Amplitude (dB)
Frequency (Hz)
0dB
−3dB
Cutoff
Frequency
Slope (dB/Oct)
Q=2
Q=1
Q=4
Q=10
Figure 11: Frequency response of the high-pass filter.
The high-pass resonant filter works exactly in the opposite manner as the low-pass resonant
filter by removing the frequency component of a signal located below the cutoff frequency while
leaving those above the cutoff frequency unchanged. Similarly to the low-pass filter, the Q-factor
controls the emphasis of frequencies located around the cut-off frequency.
Band-Pass Filter
The behavior of a band-pass filter is to let the frequencies in a band located around a center fre-
quency and to attenuate the frequencies outside of this band as shown in Figure 12. The bandwidth
of the band-pass filter is set with the Resonance knob while the center frequency is set with the
Frequency knob. The Order control sets the order of the filter. This parameter affects the slope of
the roll-off on both sides of the center frequency. For a second order filter the slope is -6dB/Oct
while for a fourth order filter it is -12dB/Oct.
27


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for AAS Ultra Analog VA-2 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of AAS Ultra Analog VA-2 in the language / languages: English as an attachment in your email.

The manual is 3,38 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info