--- /home/peter/src/mISDN-1_1_5/drivers/isdn/hardware/mISDN/dsp_audio.c	2007-07-02 11:31:34.000000000 +0200
+++ ./dsp_audio.c	2007-08-28 18:10:58.000000000 +0200
@@ -475,60 +475,62 @@
 {
 	register s32 sample;
 	int i;
+	int num[]   = { 110, 125, 150, 175, 200, 300, 400, 500 };
+	int denum[] = { 100, 100, 100, 100, 100, 100, 100, 100 };
 
 	i = 0;
 	while(i < 256) {
-		dsp_audio_reduce8[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i]>>8) & 0xffff];
-		dsp_audio_reduce7[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i]>>7) & 0xffff];
-		dsp_audio_reduce6[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i]>>6) & 0xffff];
-		dsp_audio_reduce5[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i]>>5) & 0xffff];
-		dsp_audio_reduce4[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i]>>4) & 0xffff];
-		dsp_audio_reduce3[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i]>>3) & 0xffff];
-		dsp_audio_reduce2[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i]>>2) & 0xffff];
-		dsp_audio_reduce1[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i]>>1) & 0xffff];
-		sample = dsp_audio_law_to_s32[i] << 1;
+		dsp_audio_reduce8[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i] * denum[7] / num[7] ) & 0xffff];
+		dsp_audio_reduce7[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i] * denum[6] / num[6]) & 0xffff];
+		dsp_audio_reduce6[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i] * denum[5] / num[5]) & 0xffff];
+		dsp_audio_reduce5[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i] * denum[4] / num[4]) & 0xffff];
+		dsp_audio_reduce4[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i] * denum[3] / num[3]) & 0xffff];
+		dsp_audio_reduce3[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i] * denum[2] / num[2]) & 0xffff];
+		dsp_audio_reduce2[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i] * denum[1] / num[1]) & 0xffff];
+		dsp_audio_reduce1[i] = dsp_audio_s16_to_law[(dsp_audio_law_to_s32[i] * denum[0] / num[0]) & 0xffff];
+		sample = dsp_audio_law_to_s32[i] * num[0] / denum[0];
 		if (sample < -32768)
 			sample = -32768;
 		else if (sample > 32767)
 			sample = 32767;
 		dsp_audio_increase1[i] = dsp_audio_s16_to_law[sample & 0xffff];
-		sample = dsp_audio_law_to_s32[i] << 2;
+		sample = dsp_audio_law_to_s32[i] * num[1] / denum[1];
 		if (sample < -32768)
 			sample = -32768;
 		else if (sample > 32767)
 			sample = 32767;
 		dsp_audio_increase2[i] = dsp_audio_s16_to_law[sample & 0xffff];
-		sample = dsp_audio_law_to_s32[i] << 3;
+		sample = dsp_audio_law_to_s32[i] * num[2] / denum[2];
 		if (sample < -32768)
 			sample = -32768;
 		else if (sample > 32767)
 			sample = 32767;
 		dsp_audio_increase3[i] = dsp_audio_s16_to_law[sample & 0xffff];
-		sample = dsp_audio_law_to_s32[i] << 4;
+		sample = dsp_audio_law_to_s32[i] * num[3] / denum[3];
 		if (sample < -32768)
 			sample = -32768;
 		else if (sample > 32767)
 			sample = 32767;
 		dsp_audio_increase4[i] = dsp_audio_s16_to_law[sample & 0xffff];
-		sample = dsp_audio_law_to_s32[i] << 5;
+		sample = dsp_audio_law_to_s32[i] * num[4] / denum[4];
 		if (sample < -32768)
 			sample = -32768;
 		else if (sample > 32767)
 			sample = 32767;
 		dsp_audio_increase5[i] = dsp_audio_s16_to_law[sample & 0xffff];
-		sample = dsp_audio_law_to_s32[i] << 6;
+		sample = dsp_audio_law_to_s32[i] * num[5] / denum[5];
 		if (sample < -32768)
 			sample = -32768;
 		else if (sample > 32767)
 			sample = 32767;
 		dsp_audio_increase6[i] = dsp_audio_s16_to_law[sample & 0xffff];
-		sample = dsp_audio_law_to_s32[i] << 7;
+		sample = dsp_audio_law_to_s32[i] * num[6] / denum[6];
 		if (sample < -32768)
 			sample = -32768;
 		else if (sample > 32767)
 			sample = 32767;
 		dsp_audio_increase7[i] = dsp_audio_s16_to_law[sample & 0xffff];
-		sample = dsp_audio_law_to_s32[i] << 8;
+		sample = dsp_audio_law_to_s32[i] * num[7] / denum[7];
 		if (sample < -32768)
 			sample = -32768;
 		else if (sample > 32767)