test_lpc2par.py

# ------------------------------------------------------------------------ #
# Copyright 2022 SPTK Working Group                                        #
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# Licensed under the Apache License, Version 2.0 (the "License");          #
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import pytest

import diffsptk
import tests.utils as U


@pytest.mark.parametrize("device", ["cpu", "cuda"])
@pytest.mark.parametrize("module", [False, True])
def test_compatibility(device, module, L=32, M=9, gamma=0.9, B=2):
    lpc2par = U.choice(
        module,
        diffsptk.LinearPredictiveCoefficientsToParcorCoefficients,
        diffsptk.functional.lpc2par,
        {"lpc_order": M},
        {"gamma": gamma},
    )

    U.check_compatibility(
        device,
        lpc2par,
        [],
        f"nrand -l {B*L} | lpc -l {L} -m {M}",
        f"lpc2par -m {M} -g {gamma}",
        [],
        dx=M + 1,
        dy=M + 1,
    )

    U.check_differentiability(device, lpc2par, [B, M + 1])