diff --git a/lightguide/blast.py b/lightguide/blast.py
index 14fa55a..fe9cb3d 100644
--- a/lightguide/blast.py
+++ b/lightguide/blast.py
@@ -1,19 +1,11 @@
 from __future__ import annotations
 
 import logging
+import re
 from copy import deepcopy
 from datetime import datetime, timedelta, timezone
 from functools import wraps
-from typing import (
-    TYPE_CHECKING,
-    Any,
-    Callable,
-    Iterable,
-    Iterator,
-    Literal,
-    TypeVar,
-    cast,
-)
+from typing import Any, Callable, Iterable, Iterator, Literal, TypeVar, cast
 
 import matplotlib.pyplot as plt
 import numpy as np
@@ -21,17 +13,13 @@
 from matplotlib.colors import Colormap
 from pyrocko import io
 from pyrocko.trace import Trace
-from scipy import signal
+from scipy import ndimage, signal
 
 from lightguide.utils import PathStr
 
 from .filters import afk_filter
 from .signal import decimation_coefficients
 
-if TYPE_CHECKING:
-    from matplotlib import image
-
-
 logger = logging.getLogger(__name__)
 
 
@@ -297,6 +285,23 @@ def bandpass(
         else:
             self.data = signal.sosfilt(sos, self.data, axis=1)
 
+    def wiener_filter(self, size: int = 5):
+        """Apply Wiener filter in-place.
+
+        Args:
+            size (int, optional): Size of the footprint. Defaults to 5.
+        """
+        self.data = signal.wiener(self.data, mysize=size)
+
+    def median_filter(self, size: int = 3) -> None:
+        """Apply median filter in-place.
+
+        Args:
+            size (int, optional): Footprint of the filter.
+                Defaults to 3.
+        """
+        self.data = ndimage.median_filter(self.data, size=size)
+
     def afk_filter(
         self,
         exponent: float = 0.8,
@@ -497,7 +502,7 @@ def to_strain(self, detrend: bool = True) -> Blast:
             TypeError: Raised when the input Blast is not in strain rate.
 
         Returns:
-            Blast: In strain strain.
+            Blast: Copy in strain.
         """
         if self.unit == "strain":
             return self.copy()
@@ -541,7 +546,7 @@ def to_relative_displacement(self, detrend: bool = True) -> Blast:
             TypeError: Raised when the input Blast is not in strain rate.
 
         Returns:
-            Blast: As strain strain.
+            Blast: Copy in strain.
         """
         blast = self.to_strain()
         if detrend:
@@ -556,8 +561,9 @@ def plot(
         normalize_traces: bool = True,
         cmap: str | Colormap = "seismic",
         show_date: bool = False,
+        interpolation: str = "nearest",
         show_channel: bool = False,
-    ) -> image.AxesImage:
+    ) -> plt.Axes:
         """Plot data of the blast.
 
         Args:
@@ -567,6 +573,8 @@ def plot(
                 Defaults to True.
             cmap (str | Colormap, optional): Matplotlib colormap. Defaults to "seismic".
             show_date (bool, optional): Shot absolute dates in UTC. Defaults to False.
+            interpolation (str, optional): Interpolation for plt.imshow.
+                Defaults to "nearest".
             show_channel (bool, optional): Show channels instead of meters.
                 Defaults to False.
 
@@ -594,10 +602,10 @@ def plot(
         if normalize_traces:
             data /= np.abs(data.max(axis=1, keepdims=True))
 
-        img = ax.imshow(
+        ax.imshow(
             data.T,
             aspect="auto",
-            # interpolation="nearest",
+            interpolation=interpolation,
             cmap=cmap,
             extent=extent,
             norm=colors.CenteredNorm(),
@@ -614,7 +622,7 @@ def plot(
 
         if axes is None:
             plt.show()
-        return img
+        return ax
 
     def copy(self) -> Blast:
         """Return a copy of the blast.
@@ -671,7 +679,7 @@ def from_pyrocko(cls, traces: list[Trace], channel_spacing: float = 4.0) -> Blas
         if not traces:
             raise ValueError("Empty list of traces")
 
-        traces = sorted(traces, key=lambda tr: int(tr.station))
+        traces = sorted(traces, key=lambda tr: tr.station)
         ntraces = len(traces)
 
         tmin = set()
@@ -702,7 +710,9 @@ def from_pyrocko(cls, traces: list[Trace], channel_spacing: float = 4.0) -> Blas
             data=data,
             start_time=datetime.fromtimestamp(tmin.pop(), tz=timezone.utc),
             sampling_rate=int(1.0 / delta_t.pop()),
-            start_channel=min(int(tr.station) for tr in traces),
+            start_channel=min(
+                int(re.sub(r"[a-zA-Z]", "", tr.station)) for tr in traces
+            ),
             channel_spacing=channel_spacing,
         )
 
@@ -716,7 +726,7 @@ def from_miniseed(cls, file: PathStr, channel_spacing: float = 4.0) -> Blast:
                 Defaults to 4.0.
 
         Returns:
-            Blast: Produced Blast.
+            Blast: Assembled Blast.
         """
         from pyrocko import io
 
@@ -783,19 +793,16 @@ def __len__(self) -> int:
     lowpass = shared_function(Blast.lowpass)
     highpass = shared_function(Blast.highpass)
     bandpass = shared_function(Blast.bandpass)
-    afk_filter = shared_function(Blast.afk_filter)
     decimate = shared_function(Blast.decimate)
+    afk_filter = shared_function(Blast.afk_filter)
+    wiener_filter = shared_function(Blast.wiener_filter)
+    median_filter = shared_function(Blast.median_filter)
 
     trim_time = shared_function(Blast.trim_time)
     trim_channels = shared_function(Blast.trim_channels)
 
     mute_median = shared_function(Blast.mute_median)
     one_bit_normalization = shared_function(Blast.one_bit_normalization)
-    afk_filter = shared_function(Blast.afk_filter)
-    decimate = shared_function(Blast.decimate)
-
-    trim_time = shared_function(Blast.trim_time)
-    trim_channels = shared_function(Blast.trim_channels)
 
     to_strain = shared_function(Blast.to_strain)
     to_relative_velocity = shared_function(Blast.to_relative_velocity)