pydsm.NTFdesign.legacy.quantization_noise_gain_by_conv

pydsm.NTFdesign.legacy.quantization_noise_gain_by_conv(NTF, H, H_type='zpk', db=80)

Legacy version of NTFDesign.quantization_noise_gain()

Computes the quantization noise power gain, based on a convolution

Parameters

NTFtuple

NTF definition in zpk or nd form

Htuple or array_like

output filter definition in zpk or nd form if H_type=’zpk’ or ‘ba’ (in this case, H is a tuple with 3 or 2 entries); output filter impulse response if H_type=’imp’ (in this case, H is an array)

H_typestr

type of specification for parameter H. One of: ‘zpk’, ‘ba’, or ‘imp’

dbreal

a precision hint for the computation of impulse responses

Returns

areal

noise power gain

Notes

The computation is practiced as the sum of the squared entries in the impulse response of the cascaded filter NTF*H