Update __init__.py

Author: Ranjuna120

audio_filters/__init__.py

@@ -0,0 +1,26 @@
+"""
+Audio Filters Module
+
+This module provides various digital audio filter implementations for signal processing.
+
+Available filters:
+- IIRFilter: Generic N-order Infinite Impulse Response filter
+- Butterworth filters: Low-pass and high-pass filters with Butterworth design
+- EqualLoudnessFilter: Psychoacoustic filter compensating for human ear response
+
+Example:
+    >>> from audio_filters import EqualLoudnessFilter
+    >>> filter = EqualLoudnessFilter(44100)
+    >>> processed = filter.process(0.5)
+"""
+
+from audio_filters.equal_loudness_filter import EqualLoudnessFilter
+from audio_filters.iir_filter import IIRFilter
+from audio_filters.butterworth_filter import make_highpass, make_lowpass
+
+__all__ = [
+    "EqualLoudnessFilter",
+    "IIRFilter", 
+    "make_highpass",
+    "make_lowpass",
+]