some new features

.venv/lib/python3.12/site-packages/scipy/signal/spectral.py

@@ -0,0 +1,21 @@
+# This file is not meant for public use and will be removed in SciPy v2.0.0.
+# Use the `scipy.signal` namespace for importing the functions
+# included below.
+
+from scipy._lib.deprecation import _sub_module_deprecation
+
+__all__ = [  # noqa: F822
+    'periodogram', 'welch', 'lombscargle', 'csd', 'coherence',
+    'spectrogram', 'stft', 'istft', 'check_COLA', 'check_NOLA',
+    'get_window',
+]
+
+
+def __dir__():
+    return __all__
+
+
+def __getattr__(name):
+    return _sub_module_deprecation(sub_package="signal", module="spectral",
+                                   private_modules=["_spectral_py"], all=__all__,
+                                   attribute=name)