Fix VU needle direction and keep swing within visible area

vu1_gui.py

@@ -9,7 +9,6 @@ Audio-Passthrough und Physik-Visualisierung.
 
 import requests, time, argparse, numpy as np, sys, math
 import threading, json, psutil
-from pathlib import Path
 from flask import Flask, render_template_string, jsonify, request as flask_request
 
 try:
@@ -29,7 +28,6 @@ disk_dial_uid = None
 running = False
 current_level = 0
 current_peak = 0
-SETTINGS_FILE = Path(__file__).with_name("vu1_audio_settings.json")
 
 # ══════════════════════════════════════════════════════════════
 # HTML / CSS / JS — Skeuomorphes VU-Meter
@@ -458,11 +456,6 @@ body {
       Hüllkurve mit separatem Attack/Release + 2.-Ordnung Nadelmodell<br>
       Natürliches Einschwingen, weniger Zappeln, weicher Rücklauf.
     </div>
-    <div class="iec-box" id="natural-box" style="display:none">
-      <b>Natural+</b> — neue Ballistikformel<br>
-      Hüllkurve mit separatem Attack/Release + 2.-Ordnung Nadelmodell<br>
-      Natürliches Einschwingen, weniger Zappeln, weicher Rücklauf.
-    </div>
 
     <!-- Physics sliders -->
     <div id="physics-ctrls">
@@ -676,7 +669,7 @@ function drawVU(level, peak){
 
   // Center pivot point (inside canvas so needle is always visible)
   const cx = w/2;
-  const cy = h - 22;
+  const cy = h - 12;
   const radius = Math.min(w * 0.45, h * 0.78);
 
   // Scale arc (immer obere Hälfte, links -> rechts)
@@ -1083,9 +1076,6 @@ class PhysicsVU:
         # Natural+ Formel (neue Ballistik)
         self._natural_env = 0.0
 
-        # Natural+ Formel (neue Ballistik)
-        self._natural_env = 0.0
-
     # ── Biquad helpers ──
     def _calc_biquad(self, fc):
         w0 = 2.0 * math.pi * fc / self.sample_rate
@@ -1382,34 +1372,6 @@ class PhysicsVU:
         return self.needle_pos, self.peak_pos
 
 
-# ── Persistenz: zuletzt gewählte Audio-Geräte ──
-def load_audio_settings():
-    defaults = {"audio_device_in": None, "audio_device_out": -1}
-    try:
-        if not SETTINGS_FILE.exists():
-            return defaults
-        data = json.loads(SETTINGS_FILE.read_text(encoding="utf-8"))
-        in_dev = data.get("audio_device_in", None)
-        out_dev = data.get("audio_device_out", -1)
-        if out_dev is None:
-            out_dev = -1
-        return {"audio_device_in": in_dev, "audio_device_out": out_dev}
-    except Exception as e:
-        print(f"⚠️ Konnte Audio-Settings nicht laden: {e}")
-        return defaults
-
-
-def save_audio_settings(in_dev, out_dev):
-    try:
-        payload = {
-            "audio_device_in": in_dev,
-            "audio_device_out": out_dev if out_dev is not None else -1
-        }
-        SETTINGS_FILE.write_text(json.dumps(payload, indent=2), encoding="utf-8")
-    except Exception as e:
-        print(f"⚠️ Konnte Audio-Settings nicht speichern: {e}")
-
-
 # ══════════════════════════════════════════════════════════════
 # Flask Routes
 # ══════════════════════════════════════════════════════════════
@@ -1457,7 +1419,6 @@ def set_device(which, dev_id):
                 if meter.start():
                     running = True
                     threading.Thread(target=update_loop, daemon=True).start()
-    save_audio_settings(app.config.get('audio_device_in'), app.config.get('audio_device_out', -1))
     return jsonify({"ok": True})
 
 @app.route('/toggle')
@@ -1523,6 +1484,7 @@ def set_param(param, value):
         meter.mode = value
         if value == 'iec_true':
             meter._iec_z[:] = 0
+            meter._iec_fast = meter._latest_peak
         if value == 'natural_formula':
             meter._natural_env = meter.needle_pos
     elif param == 'monitor':
@@ -1557,7 +1519,7 @@ def reset():
         meter.needle_pos=0; meter.needle_vel=0; meter.peak_pos=0
         meter.mode='full'; meter.monitor=False; meter.bypass=False; meter.solo='off'
         meter.band_crossover=250; meter.band_lo_weight=0.6; meter.band_hi_weight=0.4
-        meter._iec_z[:]=0; meter._iec_level=0; meter._natural_env=0
+        meter._iec_z[:]=0; meter._iec_level=0; meter._iec_fast=0; meter._natural_env=0
     return jsonify({"ok": True})
 
 
@@ -1597,7 +1559,7 @@ def update_loop():
 # ── Main ──
 
 def main():
-    global client, dial_uid, meter, running
+    global client, dial_uid, meter
 
     parser = argparse.ArgumentParser()
     parser.add_argument("--api-key", required=True)
@@ -1607,13 +1569,8 @@ def main():
     parser.add_argument("--port", type=int, default=8080)
     args = parser.parse_args()
 
-    saved = load_audio_settings()
+    app.config['audio_device_in'] = args.audio_device
-    chosen_in = args.audio_device if args.audio_device is not None else saved.get('audio_device_in')
+    app.config['audio_device_out'] = args.output_device
-    chosen_out = args.output_device if args.output_device is not None else saved.get('audio_device_out', -1)
-
-    app.config['audio_device_in'] = chosen_in
-    app.config['audio_device_out'] = chosen_out if chosen_out is not None else -1
-    save_audio_settings(app.config['audio_device_in'], app.config['audio_device_out'])
 
     client = VU1Client(api_key=args.api_key)
     dials = client.get_dials()
@@ -1637,19 +1594,7 @@ def main():
         globals()['disk_dial_uid'] = others[1]
         print(f"✅ Disk-Dial:   ({others[1][:8]}…)")
 
-    out_for_meter = app.config['audio_device_out']
+    meter = PhysicsVU(device_in=args.audio_device, device_out=args.output_device)
-    meter = PhysicsVU(
-        device_in=app.config['audio_device_in'],
-        device_out=out_for_meter if out_for_meter is not None and out_for_meter >= 0 else None
-    )
-
-    # Auto-Start mit gespeicherten Geräten
-    if meter.start():
-        running = True
-        threading.Thread(target=update_loop, daemon=True).start()
-        print("▶ Auto-Start aktiv (gespeicherte Audio-Ein-/Ausgänge)")
-    else:
-        print("⚠️ Auto-Start fehlgeschlagen; bitte Geräte prüfen und manuell starten.")
 
     print(f"\n🎛️  VU1 Meter Web GUI v3")
     print(f"{'='*40}")