diff -u alsa-lib-1.0.20/debian/changelog alsa-lib-1.0.20/debian/changelog
--- alsa-lib-1.0.20/debian/changelog
+++ alsa-lib-1.0.20/debian/changelog
@@ -1,3 +1,10 @@
+alsa-lib (1.0.20-3ubuntu3) karmic; urgency=low
+
+  * debian/patches/Add-Logarithmic-Volume-Control.patch:
+    - Add experimental logarithmic volume control. (LP: #204898)
+
+ -- Andy Matteson <xt.knight@gmail.com>  Sat, 01 Aug 2009 02:21:35 -0400
+
 alsa-lib (1.0.20-3ubuntu2) karmic; urgency=low
 
   * Add config file for the Creative SB-XFi series of cards, taken from git
diff -u alsa-lib-1.0.20/debian/patches/series alsa-lib-1.0.20/debian/patches/series
--- alsa-lib-1.0.20/debian/patches/series
+++ alsa-lib-1.0.20/debian/patches/series
@@ -8,0 +9 @@
+Add-Logarithmic-Volume-Control.patch
only in patch2:
unchanged:
--- alsa-lib-1.0.20.orig/debian/patches/Add-Logarithmic-Volume-Control.patch
+++ alsa-lib-1.0.20/debian/patches/Add-Logarithmic-Volume-Control.patch
@@ -0,0 +1,68 @@
+Index: alsa-lib-1.0.20/src/mixer/simple_none.c
+===================================================================
+--- alsa-lib-1.0.20.orig/src/mixer/simple_none.c	2009-08-01 02:18:54.772219821 -0400
++++ alsa-lib-1.0.20/src/mixer/simple_none.c	2009-08-01 02:20:25.720470175 -0400
+@@ -41,6 +41,8 @@
+ #include <alsa/asoundlib.h>
+ #include "mixer_simple.h"
+ 
++#define round(x) (x<0?ceil((x)-0.5):floor((x)+0.5))
++
+ #ifndef DOC_HIDDEN
+ 
+ #define MIXER_COMPARE_WEIGHT_SIMPLE_BASE        0
+@@ -211,6 +213,34 @@
+ 	return MIXER_COMPARE_WEIGHT_SIMPLE_BASE + res + idx;
+ }
+ 
++static long convert_to_logscale(selem_none_t *s, int dir, long value)
++{
++	//FILE* myf = fopen("/home/user/Desktop/convert_to_logscale", "a");
++	//if (myf!=NULL) fprintf(myf, "normalValue: %lld\n", value);
++	long range = s->str[dir].max - s->str[dir].min;
++	double mypower = 0.7;
++	double mycoeff = pow(range, -mypower) * (double)range;
++	double myvol2 = (double)value - (double)(s->str[dir].min);
++	long logValue = (long)round(mycoeff * pow(myvol2, mypower)) + s->str[dir].min;
++	//if (myf!=NULL) fprintf(myf, "logValue: %lld\n", logValue);
++	//if (myf!=NULL) fclose(myf);
++	return logValue;
++}
++
++static long convert_from_logscale(selem_none_t *s, int dir, long value)
++{
++	//FILE* myf = fopen("/home/user/Desktop/convert_from_logscale", "a");
++	//if (myf!=NULL) fprintf(myf, "logValue: %lld\n", value);
++	long range = s->str[dir].max - s->str[dir].min;
++	double mypower = 1.0/0.7;
++	double mycoeff = pow(range, -mypower) * (double)range;
++	double myvol2 = (double)value - (double)(s->str[dir].min);
++	long normalValue = (long)round(mycoeff * pow(myvol2, mypower)) + s->str[dir].min;
++	//if (myf!=NULL) fprintf(myf, "normalValue: %lld\n", normalValue);
++	//if (myf!=NULL) fclose(myf);
++	return normalValue;
++}
++
+ static long to_user(selem_none_t *s, int dir, selem_ctl_t *c, long value)
+ {
+ 	int64_t n;
+@@ -242,7 +272,8 @@
+ 		unsigned int idx1 = idx;
+ 		if (idx >= c->values)
+ 			idx1 = 0;
+-		s->str[dir].vol[idx] = to_user(s, dir, c, snd_ctl_elem_value_get_integer(ctl, idx1));
++		//s->str[dir].vol[idx] = to_user(s, dir, c, snd_ctl_elem_value_get_integer(ctl, idx1));
++		s->str[dir].vol[idx] = convert_from_logscale(s, dir, to_user(s, dir, c, snd_ctl_elem_value_get_integer(ctl, idx1)));
+ 	}
+ 	return 0;
+ }
+@@ -471,7 +502,8 @@
+ 	if ((err = snd_hctl_elem_read(c->elem, ctl)) < 0)
+ 		return err;
+ 	for (idx = 0; idx < c->values; idx++)
+-		snd_ctl_elem_value_set_integer(ctl, idx, from_user(s, dir, c, s->str[dir].vol[idx]));
++		//snd_ctl_elem_value_set_integer(ctl, idx, from_user(s, dir, c, s->str[dir].vol[idx]));
++		snd_ctl_elem_value_set_integer(ctl, idx, convert_to_logscale(s, dir, from_user(s, dir, c, s->str[dir].vol[idx])));
+ 	if ((err = snd_hctl_elem_write(c->elem, ctl)) < 0)
+ 		return err;
+ 	return 0;