gen_hamm_mat.py
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#!/usr/bin/env python
# Copyright 2012 Brno University of Technology (author: Karel Vesely)
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
# WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
# MERCHANTABLITY OR NON-INFRINGEMENT.
# See the Apache 2 License for the specific language governing permissions and
# limitations under the License.
# ./gen_hamm_mat.py
# script generates diagonal matrix with hamming window values
from __future__ import division
from __future__ import print_function
from math import *
import sys
from optparse import OptionParser
def print_on_same_line(text):
print(text, end=' ')
parser = OptionParser()
parser.add_option('--fea-dim', dest='dim', help='feature dimension')
parser.add_option('--splice', dest='splice', help='applied splice value')
(options, args) = parser.parse_args()
if(options.dim == None):
parser.print_help()
sys.exit(1)
dim=int(options.dim)
splice=int(options.splice)
#generate the diagonal matrix with hammings
M_2PI = 6.283185307179586476925286766559005
dim_mat=(2*splice+1)*dim
timeContext=2*splice+1
print('[')
for row in range(dim_mat):
for col in range(dim_mat):
if col!=row:
print_on_same_line('0')
else:
i=int(row/dim)
print_on_same_line(str(0.54 - 0.46*cos((M_2PI * i) / (timeContext-1))))
print()
print(']')