79 lines
2.6 KiB
Python
79 lines
2.6 KiB
Python
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# Copyright 2025 XMOS LIMITED.
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# This Software is subject to the terms of the XMOS Public Licence: Version 1.
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"""Test biquad filter pipeline creation.
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"""
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from audio_dsp.design.parse_json import DspJson, make_pipeline, pipeline_to_dspjson
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from audio_dsp.models.biquad import Biquad
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def test_simple_biquad_pipeline():
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"""Test creating a simple biquad filter pipeline."""
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print("Creating simple stereo biquad pipeline...")
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# Create a simple stereo biquad pipeline JSON
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pipeline_json = {
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"ir_version": 1,
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"producer_name": "test_biquad",
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"producer_version": "0.1",
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"graph": {
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"name": "Simple Biquad",
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"fs": 48000,
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"nodes": [
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{
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"op_type": "Biquad",
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"parameters": {
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"filter_type": {
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"type": "lowpass",
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"filter_freq": 1000,
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"q_factor": 0.707
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},
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},
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"placement": {
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"input": [["inputs", 0], ["inputs", 1]],
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"name": "StereoBiquad",
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"thread": 0
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}
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}
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],
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"inputs": [
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{
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"name": "inputs",
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"channels": 2
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}
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],
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"outputs": [
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{
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"name": "outputs",
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"input": [["StereoBiquad", 0], ["StereoBiquad", 1]]
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}
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]
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}
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}
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dsp_json = DspJson(**pipeline_json)
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pipeline = make_pipeline(dsp_json)
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# Find our biquad stage
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biquad_stage = None
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for stage in pipeline.stages:
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if stage.name == "biquad":
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biquad_stage = stage
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break
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assert biquad_stage is not None, "Could not find Biquad stage in pipeline"
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assert biquad_stage.parameters.filter_type.type == "lowpass", \
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f"Expected filter_type 'lowpass', got {biquad_stage.parameters.filter_type.type}"
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assert biquad_stage.parameters.filter_type.filter_freq == 1000, \
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f"Expected filter_freq 1000, got {biquad_stage.parameters.filter_type.filter_freq}"
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assert biquad_stage.parameters.filter_type.q_factor == 0.707, \
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f"Expected q_factor 0.707, got {biquad_stage.parameters.filter_type.q_factor}"
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new_json = pipeline_to_dspjson(pipeline)
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assert dsp_json.graph == new_json.graph, "Pipeline JSON does not match original"
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if __name__ == "__main__":
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test_simple_biquad_pipeline()
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