Fix for bug 1151

Extend available frequency range for Nyquist filter plug-ins.

plug-ins/highpass.ny

@@ -2,38 +2,38 @@
 ;version 4
 ;type process
 ;preview linear
-;categories "http://lv2plug.in/ns/lv2core#HighpassPlugin"
 ;name "High Pass Filter..."
 ;action "Performing High Pass Filter..."
 ;author "Dominic Mazzoni"
 ;copyright "Released under terms of the GNU General Public License version 2"
 
 ;; highpass.ny by Dominic Mazzoni
-;; Modified by David R. Sky
-;; Updated by Steve Daulton June 2012, 2015.
+;; Last updated August 2015
 ;; 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 20 and 34
-
+;control range "Frequency range" choice "Hz,kHz" 0
+;control frequency "Frequency" real "" 1000 1 1000
 ;control rolloff "Rolloff (dB per octave)" choice "  6 dB,12 dB,24 dB,36 dB,48 dB" 0
-;;control q "Filter quality (Q) for 12 dB rolloff" real "" 0.7071 .1 20
-;control frequency "Cutoff frequency (Hz)" real "" 1000 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)(highpass2 s frequency (max (min q 20) 0.1)))
-  (T 
+(case range
+  (0 (setf f0 (format nil "~a Hz" frequency))
+     (setf srate (format nil "~a Hz" *sound-srate*))
+     (setf fmax (format nil "~a Hz" (/ *sound-srate* 2))))
+  (T (setf f0 (format nil "~a kHz" frequency))
+     (setf frequency (* frequency 1000))
+     (setf srate (format nil "~a kHz" (/ *sound-srate* 1000)))
+     (setf fmax (format nil "~a kHz" (/ *sound-srate* 2000)))))
+
+
+(if (>= frequency (/ *sound-srate* 2.0))
+    (format nil "Error:\nFrequency (~a) too high for track sample rate.~%~%~
+                 Track sample rate is ~a~%~
+                 Frequency must be less than ~a."
+            f0
+            srate
+            fmax) 
     (funcall 
       (nth rolloff '(hp highpass2 highpass4 highpass6 highpass8))
-      *track* frequency)))
+      *track* frequency))

plug-ins/lowpass.ny

@@ -2,37 +2,38 @@
 ;version 4
 ;type process
 ;preview linear
-;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
+;; Last updated August 2015
 ;; 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 20 and 34
-
+;control range "Frequency range" choice "Hz,kHz" 0
+;control frequency "Frequency" real "" 1000 1 1000
 ;control rolloff "Rolloff (dB per octave)" choice "  6 dB,12 dB,24 dB,36 dB,48 dB" 0
-;;control q "Filter quality (Q) for 12 dB rolloff" real "" 0.7071 .1 20
-;control frequency "Cutoff frequency (Hz)" real "" 1000 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 
+
+(case range
+  (0 (setf f0 (format nil "~a Hz" frequency))
+     (setf srate (format nil "~a Hz" *sound-srate*))
+     (setf fmax (format nil "~a Hz" (/ *sound-srate* 2))))
+  (T (setf f0 (format nil "~a kHz" frequency))
+     (setf frequency (* frequency 1000))
+     (setf srate (format nil "~a kHz" (/ *sound-srate* 1000)))
+     (setf fmax (format nil "~a kHz" (/ *sound-srate* 2000)))))
+
+
+(if (>= frequency (/ *sound-srate* 2.0))
+    (format nil "Error:\nFrequency (~a) too high for track sample rate.~%~%~
+                 Track sample rate is ~a~%~
+                 Frequency must be less than ~a."
+            f0
+            srate
+            fmax) 
+    (funcall
       (nth rolloff '(lp lowpass2 lowpass4 lowpass6 lowpass8))
-      *track* frequency)))
+      *track* frequency))

plug-ins/notch.ny

@@ -1,26 +1,37 @@
 ;nyquist plug-in
-;version 1
+;version 4
 ;type process
 ;preview linear
-;categories "http://lv2plug.in/ns/lv2core/#FilterPlugin"
 ;name "Notch Filter..."
-;action "Performing Notch Filter..."
+;action "Applying Notch Filter..."
 ;author "Steve Daulton and Bill Wharrie"
 ;copyright "Released under terms of the GNU General Public License version 2"
 
-;control freq "Frequency" real "Hz" 60 0 10000
-;control q "Q (higher value reduces width)" real "" 1 0.1 20
-
 ;; notch.ny by Steve Daulton and Bill Wharrie, September 2010.
+;; Last updated August 2015.
 ;; Released under terms of the GNU General Public License version 2:
 ;; http://www.gnu.org/licenses/old-licenses/gpl-2.0.html .
 
-;; (multichan-expand) provides legacy support for old versions of Audacity 
-;; in which the (notch2) function only supports mono tracks.
+;control range "Frequency range" choice "Hz,kHz" 0
+;control frequency "Frequency" real "" 60 1 1000
+;control q "Q (higher value reduces width)" real "" 1 0.1 20
 
-(cond
-  ((> freq (/ *sound-srate* 2.0))(format nil "Error:\nFrequency too high for track sample rate."))
-  ((< freq 0)(format nil "Error:\nNegative frequency is invalid."))
-  ((< q 0.01)(format nil "Error:\nWidth must be at least 0.01."))
-  ((= freq 0) (format nil "Nothing to be done."))
-  (T (multichan-expand #'notch2 s freq q)))
+
+(case range
+  (0 (setf f0 (format nil "~a Hz" frequency))
+     (setf srate (format nil "~a Hz" *sound-srate*))
+     (setf fmax (format nil "~a Hz" (/ *sound-srate* 2))))
+  (T (setf f0 (format nil "~a kHz" frequency))
+     (setf frequency (* frequency 1000))
+     (setf srate (format nil "~a kHz" (/ *sound-srate* 1000)))
+     (setf fmax (format nil "~a kHz" (/ *sound-srate* 2000)))))
+
+
+(if (>= frequency (/ *sound-srate* 2.0))
+    (format nil "Error:\nFrequency (~a) too high for track sample rate.~%~%~
+                 Track sample rate is ~a~%~
+                 Frequency must be less than ~a."
+            f0
+            srate
+            fmax)
+    (notch2 *track* frequency q))