1#!/usr/bin/env python3 2# 3# Copyright 2023 The Android Open Source Project 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16# 17 18import numpy as np 19import scipy.signal as signal 20 21b, a = signal.butter(2, 1. / 60) 22print(('a:' + ' {:17.10e}' * 2).format(*a[1:])) 23print(('b:' + ' {:17.10e}' * 3).format(*b)) 24