init

lib_audio_dsp/python/audio_dsp/models/fir.py

@@ -0,0 +1,21 @@
+# Copyright 2025 XMOS LIMITED.
+# This Software is subject to the terms of the XMOS Public Licence: Version 1.
+"""FIR model definitions."""
+
+from audio_dsp.models.stage import StageModel, StageConfig
+from pydantic import Field, field_validator, model_validator
+from typing import Literal
+from pathlib import Path
+
+
+class FirConfig(StageConfig):
+    """Compile time configuration for a FIR Stage."""
+
+    coeffs_path: Path = Field(description="Path to filter coefficients file.")
+
+
+class FirDirect(StageModel):
+    """FIR filter stage using direct form implementation."""
+
+    op_type: Literal["FirDirect"] = "FirDirect"
+    config: FirConfig = Field(..., description="FIR configuration.")