diff --git a/include/audio.h b/include/audio.h
index 8f8b659..2625ada 100644
--- a/include/audio.h
+++ b/include/audio.h
@@ -19,6 +19,8 @@ typedef struct {
     bool ch2_dac;
     bool ch4_dac;
 
+    bool ch1_len_fz;
+
     u8 volume_left;
     u8 volume_right;
     bool vin_left;
diff --git a/lib/audio.c b/lib/audio.c
index b234813..75d0198 100644
--- a/lib/audio.c
+++ b/lib/audio.c
@@ -6,7 +6,7 @@
 #include <portaudio.h>
 #include <pa_ringbuffer.h>
 
-#define SAMPLE_RATE 192000
+#define SAMPLE_RATE 44100
 #define FRAMES_PER_BUFFER 64
 #define TIME_PER_SAMPLE 1.0f / (SAMPLE_RATE/1000.0f/1000.0f)
 #define TIME_PER_AUDIO_TICK 1.0f / (1048576.0f/1000.0f/1000.0f)
@@ -18,6 +18,9 @@ static float audio_time = 0;
 static float lfsr_timer = 0;
 static float lfsr_clock = LFSR_BASE_CLOCK;
 
+static float left_cap = 0.0;
+static float right_cap = 0.0;
+
 const u8 square_sample_00[8] = {
     0x0,
     0xF,
@@ -172,8 +175,19 @@ static int audio_callback(const void* input_uffer, void *output_buffer,
         if(left > 1.0f) {
             printf("Uh Oh! %02X\n", ctx.volume_left);
         }
-        *out++ = left;
-        *out++ = right;
+
+        bool dacs = ctx.ch1_dac || ctx.ch2_dac || ctx.ch3_dac || ctx.ch4_dac;
+        float left_out = 0;
+        float right_out = 0;
+        if(dacs) {
+            left_out = left - left_cap;
+            right_out = right - right_cap;
+            left_cap = left - left_out * 0.996;
+            right_cap = right - right_out * 0.996;
+        }
+
+        *out++ = left_out;
+        *out++ = right_out;
     }
     return paContinue;
 }
@@ -281,6 +295,7 @@ void audio_tick(){
             if(ctx.sq1_len >= 64) {
                 ctx.sq1_len = 0;
                 ctx.sq1_enable = false;
+                ctx.ch1_len_fz = true;
             }
         }
 
@@ -695,19 +710,26 @@ void audio_write(u16 address, u8 value){
         ctx.sq1_period_reset = (ctx.sq1_period_reset & 0xF00) | value;
     }
     if(address == 0xFF14) {
-        static bool unfreeze;
+        if(ctx.sq1_len == 64) {
+            ctx.sq1_len = 0;
+        }
         ctx.sq1_period_reset = (ctx.sq1_period_reset & 0x0FF) | ((value & 0b111) << 8);
         bool len_en = (value & 0x40) == 0x40;
-        if((ticks % 2) == 0 && ctx.sq1_len != 0 && !ctx.sq1_len_enable && len_en){
+        if((ticks % 2) == 0 && !ctx.ch1_len_fz && !ctx.sq1_len_enable && len_en){
             ctx.sq1_len++;
             if(ctx.sq1_len >= 64) {
                 ctx.sq1_len = 0;
                 ctx.sq1_enable = false;
+                ctx.ch1_len_fz = true;
+            }
+        } 
+        if((ticks % 2) == 0 && ctx.ch1_len_fz && (value & 0x80) == 0x80){
+            ctx.ch1_len_fz = false;
+            if(len_en){
+                ctx.sq1_len++;
             }
-        } else if(ctx.sq1_len == 0 && (value & 0x80) == 0x80){
-            printf("Value: %02X\n", value);
-            ctx.sq1_len = 1;
         }
+        printf("Value: %02X\n", value);
         ctx.sq1_len_enable = len_en;
         if(value & 0x80) {
             enable_square1();