Removes boost.

src/auracast/auracast_config.py

@@ -55,7 +55,6 @@ class AuracastBigConfig(BaseModel):
     precode_wav: bool = False
     iso_que_len: int = 64
     num_bis: int = 1  # 1 = mono (FRONT_LEFT), 2 = stereo (FRONT_LEFT + FRONT_RIGHT)
-    input_gain_db: float = 0.0  # Software gain boost in dB applied before LC3 encoding (0 = off, max 20)
 
 class AuracastBigConfigDeu(AuracastBigConfig):
     id: int = 12

src/auracast/multicast.py

@@ -862,13 +862,6 @@ class Streamer():
                 big['encoder'] = encoders[0]
                 big['precoded'] = False
 
-            # Pre-compute software gain multiplier from dB config (0 dB = 1.0 = no change)
-            gain_db = getattr(big_config[i], 'input_gain_db', 0.0)
-            gain_db = max(0.0, min(20.0, float(gain_db)))
-            big['_gain_linear'] = 10.0 ** (gain_db / 20.0) if gain_db > 0 else 0.0
-            if big['_gain_linear'] > 0.0:
-                logging.info("Software gain for BIG %d: +%.1f dB (linear %.3f)", i, gain_db, big['_gain_linear'])
-
         logging.info("Streaming audio...")
         bigs = self.bigs
         self.is_streaming = True
@@ -916,14 +909,6 @@ class Streamer():
                         stream_finished[i] = True
                         continue
 
-                    # Apply software gain boost if configured (> 0 dB)
-                    gain_lin = big.get('_gain_linear', 0.0)
-                    if gain_lin > 0.0:
-                        pcm_arr = np.frombuffer(pcm_frame, dtype=np.int16).astype(np.float32)
-                        pcm_arr *= gain_lin
-                        np.clip(pcm_arr, -32768, 32767, out=pcm_arr)
-                        pcm_frame = pcm_arr.astype(np.int16).tobytes()
-
                     # Compute RMS audio level (normalized 0.0-1.0) for level monitoring
                     pcm_samples = np.frombuffer(pcm_frame, dtype=np.int16).astype(np.float32)
                     rms = np.sqrt(np.mean(pcm_samples ** 2)) / 32768.0 if len(pcm_samples) > 0 else 0.0

src/auracast/server/multicast_frontend.py

@@ -199,7 +199,6 @@ else:
 
 # Analog gain control (only for Analog mode, placed below start button)
 analog_gain_db = 0  # default (dB)
-software_boost_db = 0  # default
 if audio_mode == "Analog":
     if '_analog_gain_db' not in st.session_state:
         saved_analog_gain_db = saved_settings.get('analog_gain_db_left', 0)
@@ -226,16 +225,6 @@ if audio_mode == "Analog":
             except Exception:
                 pass
         st.session_state['_prev_analog_gain_db'] = analog_gain_db
-    saved_boost = saved_settings.get('software_boost_db', 0)
-    software_boost_db = st.slider(
-        "Boost",
-        min_value=0,
-        max_value=20,
-        value=min(int(saved_boost), 20),
-        step=1,
-        disabled=is_streaming,
-        help="Digital gain boost applied before encoding (0-20 dB). Use this when the line-level signal is too quiet even at max ADC gain. Higher values may cause clipping on loud signals."
-    )
 
 # Audio level monitor (checkbox, not persisted across reloads)
 show_level_monitor = st.checkbox("Audio level monitor", value=False, disabled=not is_streaming,
@@ -695,7 +684,6 @@ else:
                     'qos_preset': qos_preset2,
                     'analog_gain_db_left': analog_gain_db,
                     'analog_gain_db_right': analog_gain_db,
-                    'software_boost_db': software_boost_db,
                 }
 
         radio1_cfg = {
@@ -713,7 +701,6 @@ else:
             'stereo_mode': stereo_enabled,
             'analog_gain_db_left': analog_gain_db,
             'analog_gain_db_right': analog_gain_db,
-            'software_boost_db': software_boost_db,
         }
 
     if audio_mode == "Network - Dante":
@@ -1611,7 +1598,6 @@ if start_stream:
                         sampling_frequency=q['rate'],
                         octets_per_frame=q['octets'],
                         num_bis=channels,  # 1=mono, 2=stereo - this determines the behavior
-                        input_gain_db=float(cfg.get('software_boost_db', 0)),
                     )
                 ],
             )

src/auracast/server/multicast_server.py

@@ -530,7 +530,6 @@ async def init_radio(transport: str, conf: auracast_config.AuracastConfigGroup,
             'analog_stereo_mode': getattr(conf.bigs[0], 'analog_stereo_mode', False) if conf.bigs else False,
             'analog_gain_db_left': getattr(conf, 'analog_gain_db_left', 0.0),
             'analog_gain_db_right': getattr(conf, 'analog_gain_db_right', 0.0),
-            'software_boost_db': getattr(conf.bigs[0], 'input_gain_db', 0.0) if conf.bigs else 0.0,
             'stream_password': (conf.bigs[0].code if conf.bigs and getattr(conf.bigs[0], 'code', None) else None),
             'big_ids': [getattr(big, 'id', DEFAULT_BIG_ID) for big in conf.bigs],
             'big_random_addresses': [getattr(big, 'random_address', DEFAULT_RANDOM_ADDRESS) for big in conf.bigs],
@@ -810,7 +809,6 @@ async def _autostart_from_settings():
                         iso_que_len=1,
                         sampling_frequency=rate,
                         octets_per_frame=octets,
-                        input_gain_db=float(settings.get('software_boost_db', 0)),
                     )
                 ]
                 conf = auracast_config.AuracastConfigGroup(
@@ -966,7 +964,6 @@ async def _autostart_from_settings():
                         iso_que_len=1,
                         sampling_frequency=rate,
                         octets_per_frame=octets,
-                        input_gain_db=float(settings.get('software_boost_db', 0)),
                     )
                 ]
                 conf = auracast_config.AuracastConfigGroup(