upd

.claude/settings.local.json

@@ -100,7 +100,8 @@
       "Bash(pip3 install:*)",
       "Bash(python3 -m pip install Pillow)",
       "Bash(python3 -m pip install pyinstaller)",
-      "Bash(python3 build.py)"
+      "Bash(python3 build.py)",
+      "Bash(source .venv-linux/bin/activate)"
     ]
   }
 }

main.py

@@ -49,9 +49,9 @@ def main():
     # Load model in background so the tray appears immediately
     threading.Thread(target=transcriber.load_model, daemon=True).start()
 
-    # Audio stream
+    # Audio stream with device hotplug monitoring
-    stream = audio.get_audio_stream()
+    app.audio_manager = audio.AudioManager()
-    stream.start()
+    app.audio_manager.start()
 
     # Hotkey
     def _on_release():
@@ -68,13 +68,13 @@ def main():
         on_settings=lambda: settings_window.open(root, _reload),
         on_vocab=lambda: vocab_window.open(root),
         on_show_log=lambda: root.after(0, log_window.show),
-        on_quit=lambda: _quit(stream, icon),
+        on_quit=lambda: _quit(icon),
     )
     threading.Thread(target=icon.run, daemon=True).start()
 
     app.log(f"Bereit. Hotkey: {config.config['hotkey']}")
     root.mainloop()
-    stream.stop()
+    app.audio_manager.stop()
 
 def _start_recording():
     from whisper_app import app, transcriber
@@ -87,6 +87,8 @@ def _reload():
     if app.hotkey_listener:
         app.hotkey_listener.stop()
     threading.Thread(target=transcriber.load_model, daemon=True).start()
+    if app.audio_manager:
+        app.audio_manager.restart()
     app.hotkey_listener = hotkey.HotkeyListener(
         config.config["hotkey"],
         on_press=_start_recording,
@@ -95,10 +97,11 @@ def _reload():
     )
     app.log(f"Hotkey aktualisiert: {config.config['hotkey']}")
 
-def _quit(stream, icon):
+def _quit(icon):
-    stream.stop()
-    icon.stop()
     from whisper_app import app
+    if app.audio_manager:
+        app.audio_manager.stop()
+    icon.stop()
     if app.overlay_tk:
         app.overlay_tk.after(0, app.overlay_tk.quit)
 

whisper_app/app.py

@@ -41,3 +41,4 @@ tray_icon = None
 overlay_window = None
 overlay_tk = None
 hotkey_listener = None
+audio_manager = None

whisper_app/audio.py

@@ -1,5 +1,7 @@
 import logging
+import re
 import threading
+import time
 
 import numpy as np
 import sounddevice as sd
@@ -8,6 +10,8 @@ from whisper_app import app, config
 
 log = logging.getLogger(__name__)
 
+_HWDEV_RE = re.compile(r"\(hw:(\d+),(\d+)\)")
+
 
 def audio_callback(indata, frames, time_info, status):
     if app.state == app.AppState.RECORDING:
@@ -26,12 +30,32 @@ def resolve_device(name: str | None) -> int | None:
 
 
 def get_input_devices() -> list[tuple[int, str]]:
-    """Return list of (index, name) for input devices on the default host API."""
+    """Return list of (index, name) for real input devices on the default host API.
+
+    On ALSA (Linux): filters out virtual/plugin devices (pulse, pipewire, jack,
+    spdif, etc.) and deduplicates entries with identical names.
+    """
     default_api = sd.query_hostapis(sd.default.hostapi)["name"]
-    return [(i, d["name"]) for i, d in enumerate(sd.query_devices())
+    devs = [(i, d["name"]) for i, d in enumerate(sd.query_devices())
             if d["max_input_channels"] > 0
             and sd.query_hostapis(d["hostapi"])["name"] == default_api]
 
+    # Detect ALSA: real hardware devices contain "(hw:X,Y)"
+    has_hw = any(_HWDEV_RE.search(name) for _, name in devs)
+    if not has_hw:
+        return devs
+
+    seen_names: set[str] = set()
+    result = []
+    for i, name in devs:
+        if not _HWDEV_RE.search(name):
+            continue  # virtual/plugin device
+        if name in seen_names:
+            continue  # exact duplicate
+        seen_names.add(name)
+        result.append((i, name))
+    return result
+
 
 def test_device(device_name: str | None, duration: float,
                 on_level: callable, on_done: callable) -> None:
@@ -61,15 +85,105 @@ def test_device(device_name: str | None, duration: float,
     threading.Thread(target=_run, daemon=True).start()
 
 
-def get_audio_stream():
+class AudioManager:
-    device = resolve_device(config.config.get("audio_device"))
+    """Manages audio stream with automatic device hotplug handling.
+
+    Polls the device list every few seconds.  When devices change (USB
+    plug/unplug, docking station) the stream is silently restarted so
+    the configured (or system-default) device is used.
+    """
+
+    _POLL_INTERVAL = 3  # seconds
+
+    def __init__(self):
+        self._stream: sd.InputStream | None = None
+        self._lock = threading.Lock()
+        self._running = False
+        self._monitor_thread: threading.Thread | None = None
+        self._last_devices: set[str] = set()
+
+    # -- public API --
+
+    def start(self):
+        """Open audio stream and begin device monitoring."""
+        self._open_stream()
+        self._running = True
+        self._monitor_thread = threading.Thread(
+            target=self._monitor_loop, daemon=True)
+        self._monitor_thread.start()
+
+    def stop(self):
+        """Stop monitoring and close stream."""
+        self._running = False
+        with self._lock:
+            if self._stream:
+                try:
+                    self._stream.stop()
+                    self._stream.close()
+                except Exception:
+                    pass
+                self._stream = None
+
+    def restart(self):
+        """Restart with (possibly changed) config.  Called after settings save."""
+        with self._lock:
+            self._close_stream_locked()
+            self._open_stream_locked()
+
+    # -- internals --
+
+    def _open_stream(self):
+        with self._lock:
+            self._open_stream_locked()
+
+    def _open_stream_locked(self):
+        device_name = config.config.get("audio_device")
+        device = resolve_device(device_name)
         sr = config.config["sample_rate"]
         try:
-        return sd.InputStream(
+            self._stream = sd.InputStream(
-            samplerate=sr, channels=1, device=device, callback=audio_callback,
+                samplerate=sr, channels=1, device=device,
+                callback=audio_callback,
             )
+            self._stream.start()
         except sd.PortAudioError:
-        log.warning("Audio device %s failed, falling back to default", device)
+            log.warning("Audio device %s failed, falling back to default",
-        return sd.InputStream(
+                        device_name)
-            samplerate=sr, channels=1, device=None, callback=audio_callback,
+            self._stream = sd.InputStream(
+                samplerate=sr, channels=1, device=None,
+                callback=audio_callback,
             )
+            self._stream.start()
+        self._last_devices = self._device_snapshot()
+
+    def _close_stream_locked(self):
+        if self._stream:
+            try:
+                self._stream.stop()
+                self._stream.close()
+            except Exception:
+                pass
+            self._stream = None
+
+    @staticmethod
+    def _device_snapshot() -> set[str]:
+        try:
+            return {d["name"] for d in sd.query_devices()
+                    if d["max_input_channels"] > 0}
+        except Exception:
+            return set()
+
+    def _monitor_loop(self):
+        while self._running:
+            time.sleep(self._POLL_INTERVAL)
+            if not self._running:
+                break
+            if app.state == app.AppState.RECORDING:
+                continue  # never disrupt an active recording
+            current = self._device_snapshot()
+            if current != self._last_devices:
+                log.info("Audio devices changed, restarting stream")
+                with self._lock:
+                    self._close_stream_locked()
+                    self._open_stream_locked()
+                app.log("Audio-Gerät neu verbunden")

whisper_app/settings_window.py

@@ -332,12 +332,12 @@ def _open_main(root: tk.Tk, on_reload) -> None:
     _add_installation_section(win, content, section, row,
                               BG, BG3, BORDER, FG, FG2, AMBER, FONT_UI, FONT_S, FONT_B)
 
-    # Center on screen after layout
+    # Center on screen with sensible default size
     win.update_idletasks()
     sw = win.winfo_screenwidth()
     sh = win.winfo_screenheight()
-    w = max(win.winfo_reqwidth(), 700)
+    w = max(win.winfo_reqwidth(), 820)
-    h = min(win.winfo_reqheight(), sh - 100)
+    h = min(max(win.winfo_reqheight(), 700), sh - 100)
     win.geometry(f"{w}x{h}+{(sw-w)//2}+{(sh-h)//2}")