kopia lustrzana https://github.com/F5OEO/rpitx
37 wiersze
1.3 KiB
Python
Executable File
37 wiersze
1.3 KiB
Python
Executable File
#!/usr/bin/python
|
|
|
|
|
|
# PiFmRds - FM/RDS transmitter for the Raspberry Pi
|
|
# Copyright (C) 2014 Christophe Jacquet, F8FTK
|
|
#
|
|
# See https://github.com/ChristopheJacquet/PiFmRds
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# This program generates a WAV file with a 1-second sine wave at 440 Hz,
|
|
# followed by a 1-second silence.
|
|
|
|
|
|
import scipy.io.wavfile as wavfile
|
|
import numpy
|
|
|
|
sample_rate = 228000
|
|
samples = numpy.zeros(2 * sample_rate, dtype=numpy.dtype('>i2'))
|
|
|
|
# 1-second tune
|
|
samples[:sample_rate] = (numpy.sin(2*numpy.pi*440*numpy.arange(sample_rate)/sample_rate)
|
|
* 20000).astype(numpy.dtype('>i2'))
|
|
|
|
wavfile.write("pulses.wav", sample_rate, samples)
|