Failed to overinstall defaults (cutoff frequency and q), after attempt to chahge the values error message appears or the effect doesn’t work. The view of document:
;nyquist plug-in;version 1;type process;name “High Pass Filter with Q…”;action “Applying High Pass Filter with Q…”;info “High Pass Filter with Q by David R. Sky”;control freq “Cutoff frequency” real “Hz” 1000 20 10000;control q “Filter q (resonance)” real “q” 1.00 0.00 5.00;; Highpass with Q, works on mono and stereo audio(if (arrayp s)(vector (highpass2 (aref s 0) freq q)(highpass2 (aref s 1) freq q))(highpass2 s freq q))
such as for High (or Low) Pass Filter, here it is easy to set new values. Other view of the document:
;nyquist plug-in
;version 3
;type process
;preview enabled
;categories "http://lv2plug.in/ns/lv2core#LowpassPlugin"
;name "Low Pass Filter..."
;action "Performing Low Pass Filter..."
;author "Dominic Mazzoni"
;copyright "Released under terms of the GNU General Public License version 2"
;; lowpass.ny by Dominic Mazzoni
;; Modified by David R. Sky
;; Updated by Steve Daulton June 2012
;; Released under terms of the GNU General Public License version 2:
;; http://www.gnu.org/licenses/old-licenses/gpl-2.0.html .
;; To enable the Q control, remove one semicolon from the start of lines 18 and 32
;control rolloff "Rolloff (dB per octave)" choice " 6 dB,12 dB,24 dB,36 dB,48 dB" 1
;;control q "Filter quality (Q) for 12 dB rolloff" real "" 0.7071 .1 20
;control frequency "Cutoff frequency (Hz)" real "" 16000 1 20000
(cond
((> frequency (/ *sound-srate* 2))
(format nil
"Cutoff frequency is set at ~a Hz but must not~%~
be greater than ~a Hz (half of the track sample rate)."
frequency
(truncate (/ *sound-srate* 2.0))))
((< frequency 1)
(format nil
"Cutoff frequency is set at ~a Hz~%but must be at least 1 Hz."
frequency))
; ((= rolloff 1)(lowpass2 s frequency (max (min q 20) 0.1)))
(T
(funcall
(nth rolloff '(lp lowpass2 lowpass4 lowpass6 lowpass8))
s frequency)))
I tried running Windows is Russian in today’s build on Windows but did not see a problem. Please give an example of Cutoff and q values that cause the problem and give us the Debug output.
Are you inputting Cutoff values above half the sample rate? That gives a specific error in High Pass and Low Pass, but only a generic error in High Pass with Q.
If you want to enable the Q setting, this is the code that you need:
;nyquist plug-in
;version 3
;type process
;preview enabled
;categories "http://lv2plug.in/ns/lv2core#LowpassPlugin"
;name "Low Pass Filter..."
;action "Performing Low Pass Filter..."
;author "Dominic Mazzoni"
;copyright "Released under terms of the GNU General Public License version 2"
;; lowpass.ny by Dominic Mazzoni
;; Modified by David R. Sky
;; Updated by Steve Daulton June 2012
;; Released under terms of the GNU General Public License version 2:
;; http://www.gnu.org/licenses/old-licenses/gpl-2.0.html .
;; To enable the Q control, remove one semicolon from the start of lines 18 and 32
;control rolloff "Rolloff (dB per octave)" choice " 6 dB,12 dB,24 dB,36 dB,48 dB" 1
;control q "Filter quality (Q) for 12 dB rolloff" real "" 0.7071 .1 20
;control frequency "Cutoff frequency (Hz)" real "" 16000 1 20000
(cond
((> frequency (/ *sound-srate* 2))
(format nil
"Cutoff frequency is set at ~a Hz but must not~%~
be greater than ~a Hz (half of the track sample rate)."
frequency
(truncate (/ *sound-srate* 2.0))))
((< frequency 1)
(format nil
"Cutoff frequency is set at ~a Hz~%but must be at least 1 Hz."
frequency))
((= rolloff 1)(lowpass2 s frequency (max (min q 20) 0.1)))
(T
(funcall
(nth rolloff '(lp lowpass2 lowpass4 lowpass6 lowpass8))
s frequency)))
I note that in the code comment, the line that says:
;; To enable the Q control, remove one semicolon from the start of lines 18 and 32
it should actually say;
;; To enable the Q control, remove one semicolon from the start of lines 20 and 34
I shall correct that for the next Audacity release.
Did we decide not to make a note about that in the Manual pages for High Pass and Low Pass? I guess the problem may be explaining what Q does or why you might want to enable it.
I think we decided not to mention it. Normally users will get best results with Q set to 1/2(2^0.5) (0.7071…). In those rare cases where users may want to use other Q settings, they will almost certainly know what “Q” is. We also agreed to retain “High Pass Filter with q” as an optional download (on the wiki).
Your editor is messing up the lines.
It should look like this:
;nyquist plug-in
;version 1
;type process
;name "High Pass Filter with Q..."
;action "Applying High Pass Filter with Q..."
;info "High Pass Filter with Q by David R. Sky"
;control freq "Cutoff frequency" real "Hz" 1000 20 10000
;control q "Filter q (resonance)" real "q" 1.00 0.00 5.00
;; Highpass with Q, works on mono and stereo audio
(if (arrayp s)
(vector (highpass2 (aref s 0) freq q)
(highpass2 (aref s 1) freq q))
(highpass2 s freq q))
;nyquist plug-in;version 1;type process;name “High Pass Filter with Q…”
;action “Applying High Pass Filter with Q…”
;info “High Pass Filter with Q by David R. Sky”
;control freq “Cutoff frequency” real “Hz” 1000 20 10000
;control q “Filter q (resonance)” real “q” 0.88 0.00 5.00
;; Highpass with Q, works on mono and stereo audio(if (arrayp s)(vector (highpass2 (aref s 0) freq q)(highpass2 (aref s 1) freq q))(highpass2 s freq q))
It is listed once in the effects. I ask to correct problem with setting default values for the additional effect “High pass filter with q”, not to enable q for usual effect High pass filter.
It is important that new lines are retained in the edited file and that the format remains as “plain text”.
I don’t use Windows, but when I did, I used “Notpad++” which is a very good (free) plain text editor: http://notepad-plus-plus.org/
Thank you very much, the document has been edited successfully, the effect with new values works! Explain, please, how to use the button “code”, my attempts failed.
;nyquist plug-in
;version 1
;type process
;name "High Pass Filter with Q..."
;action "Applying High Pass Filter with Q..."
;info "High Pass Filter with Q by David R. Sky"
;control freq "Cutoff frequency" real "Hz" 50 20 10000
;control q "Filter q (resonance)" real "q" 1.00 0.00 5.00
;; Highpass with Q, works on mono and stereo audio
(if (arrayp s)
(vector (highpass2 (aref s 0) freq q)
(highpass2 (aref s 1) freq q))
(highpass2 s freq q))
That’s OK. There are now double line breaks instead of none, but that should work OK.
The author, David R Sky, was blind (sadly he died a few years ago). Many of his plugins have double line spacing, but that should do no harm.
To use “Code” tags, ensure that there is one [code] tag at the start of the code and one [/code] closing tag at the end.
Your recent posts had:
[code]
[/code] at the start and
[code]
[/code] at the end (which does not work).
Also, ensure that the “Disable BBCode” below the message composing box is not selected.
