update

APP/backup 24.2.26/aza_audio.py

@@ -0,0 +1,74 @@
+# -*- coding: utf-8 -*-
+"""
+AudioRecorder – minimaler Recorder mit sounddevice (16kHz mono WAV).
+"""
+
+import os
+import tempfile
+import wave
+
+
+class AudioRecorder:
+    """
+    Minimaler Recorder mit sounddevice.
+    Speichert als 16kHz mono WAV (16-bit PCM).
+    """
+    def __init__(self, samplerate=16000, channels=1):
+        self.samplerate = samplerate
+        self.channels = channels
+        self._stream = None
+        self._frames = []
+        self._recording = False
+
+    def start(self):
+        try:
+            import sounddevice as sd
+        except Exception as e:
+            raise RuntimeError(
+                "Python-Paket 'sounddevice' fehlt.\n\n"
+                "Installiere es mit:\n"
+                "  py -3.11 -m pip install sounddevice\n\n"
+                f"Details: {e}"
+            )
+
+        self._frames = []
+        self._recording = True
+
+        def callback(indata, frames, time_info, status):
+            if self._recording:
+                self._frames.append(indata.copy())
+
+        self._stream = sd.InputStream(
+            samplerate=self.samplerate,
+            channels=self.channels,
+            callback=callback,
+            dtype="float32",
+            blocksize=0,
+        )
+        self._stream.start()
+
+    def stop_and_save_wav(self) -> str:
+        if not self._stream:
+            raise RuntimeError("Recorder wurde nicht gestartet.")
+        self._recording = False
+        self._stream.stop()
+        self._stream.close()
+        self._stream = None
+
+        if not self._frames:
+            raise RuntimeError("Keine Audio-Daten aufgenommen (leer).")
+
+        import numpy as np
+        audio = np.concatenate(self._frames, axis=0)
+        audio = np.clip(audio, -1.0, 1.0)
+        pcm16 = (audio * 32767.0).astype(np.int16)
+
+        fd, path = tempfile.mkstemp(suffix=".wav", prefix="kg_rec_")
+        os.close(fd)
+        with wave.open(path, "wb") as wf:
+            wf.setnchannels(self.channels)
+            wf.setsampwidth(2)
+            wf.setframerate(self.samplerate)
+            wf.writeframes(pcm16.tobytes())
+
+        return path