mulaw cleaning

diff --git a/src/pcm/pcm_mulaw.c b/src/pcm/pcm_mulaw.c
index 55dc7dac417147ca7e21fa0dbbf924e9890ff656..010245e3a11eeca1baaa756a4320ea461aa56095 100644 (file)
--- a/src/pcm/pcm_mulaw.c
+++ b/src/pcm/pcm_mulaw.c
@@ -91,7 +91,7 @@ static unsigned char s16_to_ulaw(int pcm_val) /* 2's complement (16-bit range) *
        unsigned char uval;
 
        if (pcm_val < 0) {
-               pcm_val = -pcm_val + 0x84;
+               pcm_val = 0x84 - pcm_val;
                mask = 0x7f;
        } else {
                pcm_val += 0x84;