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Code Issues Releases Wiki Activity

Steve's new replacement http://bugzilla.audacityteam.org/attachment.cgi?id=299, for http://bugzilla.audacityteam.org/show_bug.cgi?id=554

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v.audacity
2012-07-18 23:21:54 +00:00
parent 16fd848f9e
commit 9483c9ac6b
1 changed files with 74 additions and 54 deletions
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42
plug-ins/sample-data-export.ny
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@@ -59,10 +59,10 @@
(sqr (mult (aref s 1)(aref s 1)))
(avgsq (mult 0.5 (sum sql sqr)))
(avgsq (snd-avg avgsq number number op-average)))
(linear-to-db (peak (snd-sqrt avgsq) 1)))
(lin-to-db (peak (snd-sqrt avgsq) 1)))
(let* ((sndsq (mult snd snd))
(avgsq (snd-avg sndsq number number op-average)))
(linear-to-db (peak (snd-sqrt avgsq) 1)))))
(lin-to-db (peak (snd-sqrt avgsq) 1)))))
;;; dc off-set mono
@@ -79,9 +79,9 @@
(if (arrayp sig)
(let ((lin0 (dc-off-mon (aref sig 0) number))
(lin1 (dc-off-mon (aref sig 1) number)))
(list lin0 (linear-to-db (abs lin0)) lin1 (linear-to-db (abs lin1))))
(list lin0 (lin-to-db (abs lin0)) lin1 (lin-to-db (abs lin1))))
(let ((lin (dc-off-mon sig number)))
(list lin (linear-to-db (abs lin))))))
(list lin (lin-to-db (abs lin))))))
(defun checknumber ()
@@ -105,6 +105,14 @@
(char= #\\ *file-separator*))
;;; Windows safe linear-to-db
(setf ln10over20 (/ (log 10.0) 20))
(defun lin-to-db (val)
(if (= val 0)
"[-inf]"
(/ (log val) ln10over20)))
;;; Check if Mac
(defun macp ()
(string-equal (subseq (get-env "HOME") 0 6) "/Users"))
@@ -128,7 +136,7 @@
;;; get sample and convert to dB if required
(defun snd-get (snd &optional (dB 0))
(if (= dB 0) ; dB scale
(linear-to-db (abs (snd-fetch snd)))
(lin-to-db (abs (snd-fetch snd)))
(snd-fetch snd))) ; linear scale
@@ -278,6 +286,18 @@
(defun normhead ()
(if (= fileformat 4) ; html
(format nil
"~a ~a~%~aSample Rate: ~a Hz.~%Length processed: ~a samples ~a seconds.~a"
filename ; file name
(get 'info 'channels) ; mono/stereo
(get 'info 'chan-order) ; Channel Order
(get 'info 'srate) ; sample rate
number ; number of samples
(get 'info 'duration) ; duration (seconds)
(if (> (length optext)0)
(format nil "~%~a~%~%~%" optext) ; optional text
(format nil "~%~%~%"))) ; no optional text
(format nil
"~a ~a~%~aSample Rate: ~a Hz. Sample values on ~a scale.~%~
Length processed: ~a samples ~a seconds.~a"
@@ -290,7 +310,7 @@ Length processed: ~a samples ~a seconds.~a"
(get 'info 'duration) ; duration (seconds)
(if (> (length optext)0)
(format nil "~%~a~%~%~%" optext) ; optional text
(format nil "~%~%~%")))) ; no optional text
(format nil "~%~%~%"))))) ; no optional text
(defun fullhead ()
@@ -306,7 +326,7 @@ DC offset: ~a~a"
number ; number of samples
(get 'info 'duration) ; duration (seconds)
(setq smax (stereomax s)) ; peak amplitude linear
(linear-to-db smax) ; peak amplitude dB
(lin-to-db smax) ; peak amplitude dB
(srms s) ; rms
(let ((vals (dc-off s))) ; DC offset
(if (= (length vals) 2) ; mono
@@ -431,7 +451,7 @@ ul {
(get 'info 'duration) ; duration (seconds)
(get 'info 'srate) ; sample rate
(setq smax (stereomax s)) ; peak amplitude linear
(linear-to-db smax) ; peak amplitude dB
(lin-to-db smax) ; peak amplitude dB
(srms s) ; rms
(let ((vals (dc-off s))) ; DC offset
(if (= (length vals) 2) ; mono
@@ -480,15 +500,15 @@ Daulton (<a href=
(if val2
;; stereo
(let ((time (/ (1- id) *sound-srate*))
(db1 (linear-to-db (abs val1)))
(db2 (linear-to-db (abs val2))))
(db1 (lin-to-db (abs val1)))
(db2 (lin-to-db (abs val2))))
(format fp
"<tr>~%<td>~a</td>~%<td>~a</td>~%<td>~a</td>~%<td>~a</td>~%~
<td>~a</td>~%<td>~a</td>~%</tr>~%"
id time val1 val2 db1 db2))
;; mono
(let ((time (/ (1- id) *sound-srate*))
(db (linear-to-db (abs val1))))
(db (lin-to-db (abs val1))))
(format fp
"<tr>~%<td>~a</td>~%<td>~a</td>~%<td>~a</td>~%<td>~a</td>~%</tr>~%"
id time val1 db))))