pythonでgnuradio その5

概要

pythonでgnuradioやってみた。
AM変調を表示。
信号は、440ｈｚのサイン波、搬送波は、5KHZ。

写真

サンプルコード

from gnuradio import gr, blocks, analog, filter
import sys
import sip
from gnuradio import qtgui
from PyQt4 import Qt, QtGui, QtCore

class my_top_block(gr.top_block):
    def __init__(self):
        gr.top_block.__init__(self)
        samp_rate = 32000
        self.qapp = QtGui.QApplication(sys.argv)
        self.sink1 = qtgui.sink_c(1024, filter.firdes.WIN_BLACKMAN_hARRIS, 0, samp_rate, "", True, True, True, True, )
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_add_const_vxx_0 = blocks.add_const_vcc((1, ))
        self.analog_sig_source_x_1 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, 5000, 1, 0)
        self.analog_sig_source_x_0 = analog.sig_source_c(samp_rate, analog.GR_COS_WAVE, 440, 1, 0)
        self.connect((self.analog_sig_source_x_0, 0), (self.blocks_add_const_vxx_0, 0))
        self.connect((self.analog_sig_source_x_1, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_add_const_vxx_0, 0), (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0), (self.sink1, 0))
        pyQt = self.sink1.pyqwidget()
        pyWin = sip.wrapinstance(pyQt, QtGui.QWidget)
        self.top_widget = Qt.QWidget()
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_layout.addWidget(pyWin)
        self.top_widget.show()

if __name__ == "__main__":
    tb = my_top_block();
    tb.start()
    tb.qapp.exec_()
    tb.stop()

以上。