fix: verify_sync

Makefile

@@ -84,7 +84,7 @@ sync:
 	@if [ -x $(PY) ]; then $(PY) apply_sync.py --config $(CONFIG) --lag $(LAG); else python3 apply_sync.py --config $(CONFIG) --lag $(LAG); fi
 
 verify:
-	@if [ -x $(PY) ]; then QT_STYLE_OVERRIDE=Fusion $(PY) verify_sync.py --config $(CONFIG) --lag $(LAG); else QT_STYLE_OVERRIDE=Fusion python3 verify_sync.py --config $(CONFIG) --lag $(LAG); fi
+	@if [ -x $(PY) ]; then LC_NUMERIC=C QT_STYLE_OVERRIDE=Fusion $(PY) verify_sync.py --config $(CONFIG) --lag $(LAG); else LC_NUMERIC=C QT_STYLE_OVERRIDE=Fusion python3 verify_sync.py --config $(CONFIG) --lag $(LAG); fi
 
 ast:
 	@AUDIO_A=$$(python3 -c "import tomllib; c=tomllib.load(open('config.toml','rb')); print(c['extract'].get('file_a',''))" 2>/dev/null); \
@@ -100,7 +100,7 @@ ast:
 	else \
 		echo "=> extracted wavs exist ($$OUT/$${STEM_A}_audio.wav, $$OUT/$${STEM_B}_audio.wav), skipping extract"; \
 	fi
-	@if [ -x $(PY) ]; then QT_STYLE_OVERRIDE=Fusion $(PY) sync_audio_test.py --config $(CONFIG); else QT_STYLE_OVERRIDE=Fusion python3 sync_audio_test.py --config $(CONFIG); fi
+	@if [ -x $(PY) ]; then LC_NUMERIC=C QT_STYLE_OVERRIDE=Fusion $(PY) sync_audio_test.py --config $(CONFIG); else LC_NUMERIC=C QT_STYLE_OVERRIDE=Fusion python3 sync_audio_test.py --config $(CONFIG); fi
 
 clean:
 	rm -rf $(VENV) __pycache__ .pytest_cache

sync_audio_test.py

@@ -38,6 +38,7 @@ except ImportError:
     HAS_SD = False
 
 from sync_audio import load_wav, correlate, device_info, lag_to_seconds
+from waveform_cache import cached_load_wav
 
 
 
@@ -126,9 +127,9 @@ class SyncWindow(QtWidgets.QMainWindow):
 
         # load
         print(f"Loading {a_path}")
-        self.a, self.sr_a = load_wav(a_path, target_sr=sr)
+        self.a, self.sr_a = cached_load_wav(a_path, target_sr=sr, _loader=load_wav)
         print(f"Loading {b_path}")
-        self.b, self.sr_b = load_wav(b_path, target_sr=sr)
+        self.b, self.sr_b = cached_load_wav(b_path, target_sr=sr, _loader=load_wav)
         # keep originals for lag apply
         self.a_orig = self.a.copy()
         self.b_orig = self.b.copy()

verify_sync.py

@@ -22,11 +22,9 @@ Usage:
 """
 
 from __future__ import annotations
-import os, sys, math, argparse, subprocess, json, shutil, threading, tempfile, warnings, locale, signal
+import os, sys, math, argparse, subprocess, json, shutil, threading, tempfile, warnings, signal
 import numpy as np
 
-locale.setlocale(locale.LC_NUMERIC, "C")
-
 warnings.filterwarnings("ignore", category=RuntimeWarning, module="pyqtgraph")
 
 try:
@@ -57,6 +55,7 @@ except ImportError:
     HAS_SD = False
 
 from sync_audio import load_wav
+from waveform_cache import cached_load_wav
 
 
 # ─── Helpers ───
@@ -205,9 +204,9 @@ class VerifyWindow(QtWidgets.QMainWindow):
 
         # Load audio
         print(f"Loading audio A: {wav_a_path}")
-        self.a_orig, _ = load_wav(wav_a_path, target_sr=sr)
+        self.a_orig, _ = cached_load_wav(wav_a_path, target_sr=sr, _loader=load_wav)
         print(f"Loading audio B: {wav_b_path}")
-        self.b_orig, _ = load_wav(wav_b_path, target_sr=sr)
+        self.b_orig, _ = cached_load_wav(wav_b_path, target_sr=sr, _loader=load_wav)
 
         # Apply lag alignment
         self.a_aligned, self.b_aligned = apply_lag(self.a_orig, self.b_orig, self.lag_samples)