diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..38a62e2
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,17 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "test",
+            "program": "${workspaceFolder}/build/xaacenc",
+            "args": ["-ifile:sq96.wav", "-ofile:/dev/null", "-adts:1", "-br:64000", "-aot:5"],
+            "cwd": "${workspaceFolder}/build/"
+        }
+
+    ]
+}
\ No newline at end of file
diff --git a/encoder/ixheaace_sbr_code_envelope_lp.c b/encoder/ixheaace_sbr_code_envelope_lp.c
index 95c9adf..cc38803 100644
--- a/encoder/ixheaace_sbr_code_envelope_lp.c
+++ b/encoder/ixheaace_sbr_code_envelope_lp.c
@@ -18,6 +18,7 @@
  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
  */
 
+#include <stdio.h>
 #include <string.h>
 
 #include "ixheaac_type_def.h"
@@ -136,6 +137,8 @@ IA_ERRORCODE ixheaace_code_envelope(WORD32 *ptr_sfb_energy, const ixheaace_freq_
     else
       no_of_bands = pstr_code_env->num_scf[FREQ_RES_LOW];
 
+    printf("scf bands: %d, i: %d\n", no_of_bands, i);
+
     ptr_energy = ptr_sfb_energy;
     current_energy = *ptr_energy;
     delta_f[0] = ixheaac_shr32(current_energy, env_data_tab_comp_factor);
@@ -162,6 +165,7 @@ IA_ERRORCODE ixheaace_code_envelope(WORD32 *ptr_sfb_energy, const ixheaace_freq_
     band = no_of_bands - 1;
     while (band > 0) {
       if (ptr_energy[band] - ptr_energy[band - 1] > code_book_scf_lav_lvl_freq) {
+        printf("align 1: %d, a: %d, b: %d, c: %d\n", ptr_energy[band] - code_book_scf_lav_lvl_freq, ptr_energy[band], ptr_energy[band - 1], code_book_scf_lav_lvl_freq);
         ptr_energy[band - 1] = ptr_energy[band] - code_book_scf_lav_lvl_freq;
       }
       band--;
@@ -174,12 +178,14 @@ IA_ERRORCODE ixheaace_code_envelope(WORD32 *ptr_sfb_energy, const ixheaace_freq_
 
       if (ixheaac_sub32_sat(ptr_energy[band - 1], ptr_energy[band]) >
           code_book_scf_lav_lvl_freq) {
+        printf("align 2: %d\n", ptr_energy[band - 1] - code_book_scf_lav_lvl_freq);    
         ptr_energy[band] = ptr_energy[band - 1] - code_book_scf_lav_lvl_freq;
       }
 
       last_nrg = *ptr_energy++;
       current_energy = *ptr_energy;
       delta_f[band] = ixheaac_shr32((current_energy - last_nrg), env_data_tab_comp_factor);
+      printf("shr: (current_energy - last_nrg) >> env_data_tab_comp_factor: %d, eng: %d, nrg: %d, comp_factor: %d\n", delta_f[band], current_energy, last_nrg, env_data_tab_comp_factor);
 
       err_code = ixheaace_compute_bits(
           delta_f[band], code_book_scf_lav_lvl_freq, code_book_scf_lav_bal_freq,
diff --git a/encoder/ixheaace_sbr_env_est.c b/encoder/ixheaace_sbr_env_est.c
index 9f78654..c25d5f5 100644
--- a/encoder/ixheaace_sbr_env_est.c
+++ b/encoder/ixheaace_sbr_env_est.c
@@ -18,6 +18,7 @@
  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
  */
 
+#include <stdio.h>
 #include <string.h>
 #include <math.h>
 #include <limits.h>
@@ -2424,6 +2425,7 @@ IA_ERRORCODE ixheaace_extract_sbr_envelope(FLOAT32 *ptr_in_time, FLOAT32 *ptr_co
       // ptr_noise_floor[]. However, MSVS static analysis is marking this as a potential error.
       // So, suppressed this in source
       ixheaace_sbr_noise_floor_levels_quantisation(ptr_noise_level[0], ptr_noise_floor[0], 0);
+      printf("left right code 1\n");
 
       err_code = ixheaace_code_envelope(
           ptr_noise_level[0], res, &pstr_env_ch[0]->str_sbr_code_noise_floor,
@@ -2434,6 +2436,7 @@ IA_ERRORCODE ixheaace_extract_sbr_envelope(FLOAT32 *ptr_in_time, FLOAT32 *ptr_co
       }
 
       ixheaace_sbr_noise_floor_levels_quantisation(ptr_noise_level[1], ptr_noise_floor[1], 0);
+      printf("left right code 2\n");
 
       err_code = ixheaace_code_envelope(
           ptr_noise_level[1], res, &pstr_env_ch[1]->str_sbr_code_noise_floor,
@@ -2721,6 +2724,7 @@ IA_ERRORCODE ixheaace_extract_sbr_envelope(FLOAT32 *ptr_in_time, FLOAT32 *ptr_co
         i++;
       }
 
+      printf("noise level: %d\n", ptr_noise_lvl_coupling[0]);
       err_code = ixheaace_code_envelope(
           ptr_noise_lvl_coupling[0], res, &pstr_env_ch[0]->str_sbr_code_noise_floor,
           pstr_env_0->domain_vec_noise, 1, (pstr_const_frame_info[0]->n_envelopes > 1 ? 2 : 1), 0,
diff --git a/encoder/ixheaace_sbr_write_bitstream.c b/encoder/ixheaace_sbr_write_bitstream.c
index 1afe4d1..b1107ac 100644
--- a/encoder/ixheaace_sbr_write_bitstream.c
+++ b/encoder/ixheaace_sbr_write_bitstream.c
@@ -19,6 +19,8 @@
  */
 
 #include <math.h>
+#include <signal.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include "ixheaac_type_def.h"
 #include "ixheaac_constants.h"
@@ -1374,21 +1376,26 @@ ixheaace_compute_bits(WORD32 delta, WORD32 code_book_scf_lav_lvl,
                           : ixheaac_min32(delta, code_book_scf_lav_balance);
 
       if (index != delta) {
+        raise(SIGTRAP);
         return IA_EXHEAACE_EXE_FATAL_SBR_INVALID_BS;
       }
 
       *ptr_delta_bits = ptr_huff_tbl_bal[index + code_book_scf_lav_balance];
     } else {
+      printf("cp2\n");
+      printf("lav: %d, del: %d\n", code_book_scf_lav_lvl, delta);
       index = (delta < 0) ? ixheaac_max32(delta, -code_book_scf_lav_lvl)
                           : ixheaac_min32(delta, code_book_scf_lav_lvl);
 
       if (index != delta) {
+        raise(SIGTRAP);
         return IA_EXHEAACE_EXE_FATAL_SBR_INVALID_BS;
       }
 
       *ptr_delta_bits = ptr_huff_tbl_lvl[index + code_book_scf_lav_lvl];
     }
   } else {
+    printf("def2\n");
     index = (delta < 0) ? ixheaac_max32(delta, -code_book_scf_lav_lvl)
                         : ixheaac_min32(delta, code_book_scf_lav_lvl);