diff --git a/lib_com/options.h b/lib_com/options.h
index 5cb264d3579b46f327521a9c77cb3bc78c583f83..475df11b7327d7919108a408d28efcc1d90b44bc 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -163,6 +163,7 @@
 #define FIX_844_Q_SYN_INIT                          /* VA : proposed fix to 844, initializing q_old_synth when switching to MDCT*/
 #define FIX_839_FB_CONTENT_SOMETIME_MISSING     /* VA : Fix scaling error for FB TB BWE */
 #define FIX_846_TILT_BWE                        /* VA : Proposed fix to 846, to solve saturation */
+#define FIX_843_LOW_RATE_BWE                    /* VA : Proposed fix to 843 to solve mid band noise */
 /* ################## End DEVELOPMENT switches ######################### */
 
 /* clang-format on */
diff --git a/lib_dec/acelp_core_dec_ivas_fx.c b/lib_dec/acelp_core_dec_ivas_fx.c
index db5a5176991239fc2bc4f0f42142630dd0fb62b6..8eb83ce1ab41d7043a5116ab9dee5b43c9ad4287 100644
--- a/lib_dec/acelp_core_dec_ivas_fx.c
+++ b/lib_dec/acelp_core_dec_ivas_fx.c
@@ -1187,7 +1187,11 @@ ivas_error acelp_core_dec_ivas_fx(
                 /* Core synthesis at 12.8kHz or 16kHz */
                 i = 1;
                 move16();
+#ifdef FIX_843_LOW_RATE_BWE
+                if ( st->coder_type == INACTIVE && st->element_mode == EVS_MONO )
+#else
                 if ( st->coder_type == INACTIVE )
+#endif
                 {
                     i = 0;
                     move16();
@@ -2121,9 +2125,15 @@ ivas_error acelp_core_dec_ivas_fx(
             Copy_Scale_sig_32_16( synth_fx, synth_fx16, L_FRAME48k, 0 );
 #endif
 #ifdef FIX_774_ENERGY_BURST
+#ifdef FIX_843_LOW_RATE_BWE
+            hf_synth_fx( st->hBWE_zero, st->core_brate, output_frame, Aq_fx, exc2_fx,
+                         psyn_fx, synth_fx16, st->Q_exc, st->Q_syn2, st->hBWE_zero->delay_syn_hf_fx, &st->hBWE_zero->memExp1,
+                         st->hBWE_zero->mem_hp_interp_fx, st->extl, st->CNG_mode );
+#else
             hf_synth_fx( st->hBWE_zero, st->core_brate, output_frame, Aq_fx, exc_fx,
                          psyn_fx, synth_fx16, st->Q_exc, st->Q_syn2, st->hBWE_zero->delay_syn_hf_fx, &st->hBWE_zero->memExp1,
                          st->hBWE_zero->mem_hp_interp_fx, st->extl, st->CNG_mode );
+#endif
 #else
             hf_synth_ivas_fx( st->hBWE_zero, st->core_brate, output_frame, Aq_fx, exc_fx,
                               psyn_fx, synth_fx16, st->Q_exc, st->Q_syn2, st->hBWE_zero->delay_syn_hf_fx, &tmp_exp,
diff --git a/lib_dec/ivas_td_low_rate_dec.c b/lib_dec/ivas_td_low_rate_dec.c
index 0d1e8b9d7b79fa3501bb0792fea954ccb213cf91..bf3b6da3435be349ddac66cfb3ac33a1331cb5e2 100644
--- a/lib_dec/ivas_td_low_rate_dec.c
+++ b/lib_dec/ivas_td_low_rate_dec.c
@@ -315,6 +315,10 @@ void tdm_low_rate_dec_fx(
 
     edct_16fx( exc_wo_nf_fx, exc_wo_nf_fx, L_FRAME, find_guarded_bits_fx( L_FRAME ), IVAS_CPE_TD );
 
+#ifdef FIX_843_LOW_RATE_BWE
+    Rescale_exc( st->hMusicPF->dct_post_old_exc_fx, &exc[0], &bwe_exc[0], st->hGSCDec->last_exc_dct_in_fx,
+                 L_FRAME, L_FRAME * HIBND_ACB_L_FAC, L_shl( st->lp_gainc_fx, 13 /* Q3 -> Q16*/ ), &( st->Q_exc ), st->Q_subfr, NULL, 0, st->coder_type );
+#endif
     /*----------------------------------------------------------------------*
      * Remove potential pre-echo in case an onset has been detected
      *----------------------------------------------------------------------*/
diff --git a/lib_dec/swb_bwe_dec_fx.c b/lib_dec/swb_bwe_dec_fx.c
index f72e89398f26795e589c932348ad949ab175f7f6..765458a90a9f76db61b11812ca0590152c810b99 100644
--- a/lib_dec/swb_bwe_dec_fx.c
+++ b/lib_dec/swb_bwe_dec_fx.c
@@ -368,7 +368,9 @@ Word16 ivas_wb_bwe_dec_fx(
     Word16 scl, new_input_fx_exp;
     Word16 i;
     FD_BWE_DEC_HANDLE hBWE_FD;
-
+#ifdef FIX_843_LOW_RATE_BWE
+    Word16 ysynth_frame_size;
+#endif
     Word16 coder_type = st_fx->coder_type;
     move16();
 
@@ -389,6 +391,9 @@ Word16 ivas_wb_bwe_dec_fx(
         *Qpost = sub( new_input_fx_exp, 15 );
         move16();
         direct_transform_fx( L_wtda_synth_fx, ysynth_32, 0, /*st->L_frame*/ L_FRAME16k, &new_input_fx_exp, st_fx->element_mode );
+#ifdef FIX_843_LOW_RATE_BWE
+        ysynth_frame_size = L_FRAME16k;
+#endif
     }
     ELSE
     {
@@ -398,10 +403,15 @@ Word16 ivas_wb_bwe_dec_fx(
         *Qpost = sub( new_input_fx_exp, 15 );
         move16();
         /* DCT of the ACELP core synthesis */
+#ifdef FIX_843_LOW_RATE_BWE
+        direct_transform_fx( L_wtda_synth_fx, ysynth_32, 0, output_frame, &new_input_fx_exp, st_fx->element_mode );
+        ysynth_frame_size = output_frame;
+#else
 #ifdef MSAN_FIX
         direct_transform_fx( L_wtda_synth_fx, ysynth_32, 0, L_FRAME16k, &new_input_fx_exp, st_fx->element_mode );
 #else
         direct_transform_fx( L_wtda_synth_fx, ysynth_32, 0, output_frame, &new_input_fx_exp, st_fx->element_mode );
+#endif
 #endif
     }
     /* Convert to 16 Bits (Calc Shift Required to Stay within MAX_Q_NEW_INPUT) */
@@ -411,18 +421,26 @@ Word16 ivas_wb_bwe_dec_fx(
     {
         /* Yes */
         /* Calc Room to Upscale */
+#ifdef FIX_843_LOW_RATE_BWE
+        Q_syn = Find_Max_Norm32( ysynth_32, ysynth_frame_size );
+#else
 #ifdef MSAN_FIX
         Q_syn = Find_Max_Norm32( ysynth_32, L_FRAME16k );
 #else
         Q_syn = Find_Max_Norm32( ysynth_32, output_frame );
+#endif
 #endif
         /* Stay within MAX_Q_NEW_INPUT */
         scl = s_min( Q_syn, scl );
     }
+#ifdef FIX_843_LOW_RATE_BWE
+    Copy_Scale_sig32_16( ysynth_32, ysynth_fx, ysynth_frame_size, scl );
+#else
 #ifdef MSAN_FIX
     Copy_Scale_sig32_16( ysynth_32, ysynth_fx, L_FRAME16k, scl );
 #else
     Copy_Scale_sig32_16( ysynth_32, ysynth_fx, output_frame, scl );
+#endif
 #endif
     Q_syn = add( sub( new_input_fx_exp, 16 ), scl );
     IF( !st_fx->bfi )