def get_ir(ir_params):
"""
Computes the impulse reponse (ir) associated with a the Green function at x=0
of the wave equation in a manifold M defined by its eigen-values.
Return an instance of the class Signal containing the Green function at given
sampling rate.
ir_params : [dict] dictionary containing params
{ 'ev_params' : {'space':'e3', 'F': [0.1,0.1,0.1], 'j_max':1},
'duration' : 0.1,
'nu' : 1.7e-5,
'sampling_rate' : 8000,
}
"""
ir_params = _check_params(ir_params)
eigen_vals, ev_params = get_eigenvalues(ir_params['ev_params'])
ir_params_ = copy.deepcopy(ir_params)
ir_params_.update({'eigen_vals':eigen_vals, 'c':ev_params['c']})
del ir_params_['ev_params']
green_fn_0 = compute_green_fn(**ir_params_)
sig_gf = Signal(green_fn_0,fs=ir_params_['sampling_rate'],mono=True,normalize=True)
return sig_gf, eigen_vals
def test_eigenvalues():
get_eigenvalues({'space':'e3' , 'F':[0.1,0.1,0.1], 'j_max':2})
get_eigenvalues({'space':'s3' , 'F':[0.1], 'c':3.4e2})
get_eigenvalues({'space':'h2e1', 'F':[0.1], 'kind':3})
get_eigenvalues({'space':'s2e1', 'F':[0.1,0.1], 'unused_kwarg':'unused_kwarg'})