diff --git a/src/core/data_buffer.py b/src/core/data_buffer.py
index 3b961df..bd61960 100644
--- a/src/core/data_buffer.py
+++ b/src/core/data_buffer.py
@@ -48,8 +48,7 @@ class DataBuffer:
 
         # Допускаем небольшой обратный ход, чтобы не сбрасываться от микрошума.
         self.dbfs_max_backstep_db = float(os.getenv('dbfs_max_backstep_db', 0.25))
-        # Минимум подряд "плавных" шагов перед учетом как устойчивого роста.
-        self.dbfs_min_trend_steps = int(os.getenv('dbfs_min_trend_steps', max(1, self.num_for_alarm)))
+        
 
         self.freq_tag = '' if freq_tag is None else str(freq_tag)
         suffix = f'_{self.freq_tag}' if self.freq_tag else ''
@@ -58,6 +57,12 @@ class DataBuffer:
         self.mad_k_on = float(os.getenv('mad_k_on' + suffix, os.getenv('mad_k_on', 5.0)))
         self.mad_k_off = float(os.getenv('mad_k_off' + suffix, os.getenv('mad_k_off', 2.5)))
         self.mad_eps = float(os.getenv('mad_eps' + suffix, os.getenv('mad_eps', 0.05)))
+        self.dbfs_linear_offset_db = float(
+            os.getenv('dbfs_linear_offset_db' + suffix, os.getenv('dbfs_linear_offset_db', 0.0))
+        )
+        self.dbfs_linear_abs_median_scale = float(
+            os.getenv('dbfs_linear_abs_median_scale' + suffix, os.getenv('dbfs_linear_abs_median_scale', 0.0))
+        )
 
     def get_buffer(self):
         return self.buffer
@@ -111,10 +116,14 @@ class DataBuffer:
                 self.buffer_medians[i] = med
                 self.buffer_mads[i] = float(self._calc_mad(self.buffer[i], med))
 
+    def get_linear_term(self, median_value):
+        median_value = float(median_value)
+        return self.dbfs_linear_offset_db + self.dbfs_linear_abs_median_scale * abs(median_value)
+
     def get_threshold(self, channel_idx, k=None):
         """
         Получить динамический порог в dB для канала:
-        threshold = median + k * MAD.
+        threshold = median + linear_term(median) + k * MAD.
         До завершения инициализации возвращает None.
         """
         if not self.check_init():
@@ -123,7 +132,8 @@ class DataBuffer:
         coef = self.mad_k_on if k is None else float(k)
         baseline = float(self.buffer_medians[channel_idx])
         mad = max(float(self.buffer_mads[channel_idx]), self.mad_eps)
-        return baseline + coef * mad
+        linear_term = self.get_linear_term(baseline)
+        return baseline + linear_term + coef * mad
 
     def get_thresholds(self, k=None):
         if not self.check_init():
@@ -138,12 +148,18 @@ class DataBuffer:
         freq_tag = self.freq_tag or 'unknown'
         print(f'[threshold-update][{freq_tag}] now={now_str} updated_column={updated_column}')
         for i in range(self.line_size):
+            baseline = float(self.buffer_medians[i])
+            mad = float(self.buffer_mads[i])
+            mad_eff = max(mad, self.mad_eps)
+            linear_term = self.get_linear_term(baseline)
             threshold_on = self.get_threshold(i, self.mad_k_on)
             threshold_off = self.get_threshold(i, self.mad_k_off)
             packet_times = [self._format_ts(ts) for ts in self.buffer_timestamps[i]]
             print(
-                f'  ch={i} median={self.buffer_medians[i]:.6f} '
-                f'mad={self.buffer_mads[i]:.6f} '
+                f'  ch={i} median={baseline:.6f} '
+                f'linear_term={linear_term:.6f} '
+                f'mad={mad:.6f} mad_eff={mad_eff:.6f} '
+                f'mad_term_on={self.mad_k_on * mad_eff:.6f} mad_term_off={self.mad_k_off * mad_eff:.6f} '
                 f'threshold_on={threshold_on:.6f} threshold_off={threshold_off:.6f} '
                 f'packet_times={packet_times}'
             )
@@ -222,7 +238,6 @@ class DataBuffer:
                 active_threshold = threshold_off if self.buffer_alarms[i] > 0 else threshold_on
                 exceeding = (
                     current >= active_threshold
-                    and self.trend_streak[i] >= self.dbfs_min_trend_steps
                 )
 
                 if exceeding: