def __init__(self, parent, logger=PrintLogger()):
super().__init__(parent)
self.logger = logger
self.audiobuffer = None
self.setObjectName("Spectrum_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneSpect = HistPlot(self, self.logger)
self.PlotZoneSpect.setObjectName("PlotZoneSpect")
self.gridLayout.addWidget(self.PlotZoneSpect, 0, 0, 1, 1)
self.spec_min = DEFAULT_SPEC_MIN
self.spec_max = DEFAULT_SPEC_MAX
self.weighting = DEFAULT_WEIGHTING
self.response_time = DEFAULT_RESPONSE_TIME
self.PlotZoneSpect.setspecrange(self.spec_min, self.spec_max)
self.PlotZoneSpect.setweighting(self.weighting)
self.filters = octave_filters(DEFAULT_BANDSPEROCTAVE)
self.dispbuffers = [0] * DEFAULT_BANDSPEROCTAVE * NOCTAVE
# set kernel and parameters for the smoothing filter
self.setresponsetime(self.response_time)
# initialize the settings dialog
self.settings_dialog = OctaveSpectrum_Settings_Dialog(self, self.logger)
def __init__(self, parent=None, logger=PrintLogger()):
super().__init__(parent)
self.setObjectName("LongLevels_Widget")
self.logger = logger
self.setObjectName("Scope_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.PlotZoneUp.setverticaltitle("Level (dB FS RMS)")
self.PlotZoneUp.sethorizontaltitle("Time (min)")
self.PlotZoneUp.setTrackerFormatter(lambda x, y: "%.3g min, %.3g" % (x, y))
self.level_min = DEFAULT_LEVEL_MIN
self.level_max = DEFAULT_LEVEL_MAX
self.PlotZoneUp.setverticalrange(self.level_min, self.level_max)
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.logger = logger
self.audiobuffer = None
# initialize the settings dialog
self.settings_dialog = LongLevels_Settings_Dialog(self, self.logger)
# initialize the class instance that will do the fft
self.proc = audioproc(self.logger)
self.level = None # 1e-30
self.level_rms = -200.
self.two_channels = False
self.i = 0
self.old_index = 0
#self.response_time = 60. # 1 minute
self.response_time = 20.
# how many times we should decimate to end up with 100 points in the kernel
self.Ndec = int(max(0, np.floor((np.log2(self.response_time * SAMPLING_RATE/100.)))))
Ngauss = 4
self.b = np.array(gauss(10*Ngauss+1, 2.*Ngauss))
self.a = np.zeros(self.b.shape)
self.a[0] = 1.
self.zf = np.zeros(max(len(self.b), len(self.a)) - 1)
self.subsampled_sampling_rate = SAMPLING_RATE / 2 ** (self.Ndec)
self.subsampler = Subsampler(self.Ndec)
self.length_seconds = 60.*10
# actually this should be linked to the pixel width of the plot area
self.length_samples = self.length_seconds * self.subsampled_sampling_rate
# ringbuffer for the subsampled data
self.ringbuffer = RingBuffer(self.logger)
def __init__(self, parent, audiobackend, logger=PrintLogger()):
super().__init__(parent)
self.logger = logger
self.setObjectName("Spectrogram_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneImage = ImagePlot(self, self.logger, audiobackend)
self.PlotZoneImage.setObjectName("PlotZoneImage")
self.gridLayout.addWidget(self.PlotZoneImage, 0, 1, 1, 1)
self.audiobuffer = None
self.audiobackend = audiobackend
# initialize the class instance that will do the fft
self.proc = audioproc(self.logger)
self.maxfreq = DEFAULT_MAXFREQ
self.proc.set_maxfreq(self.maxfreq)
self.minfreq = DEFAULT_MINFREQ
self.fft_size = 2 ** DEFAULT_FFT_SIZE * 32
self.proc.set_fftsize(self.fft_size)
self.spec_min = DEFAULT_SPEC_MIN
self.spec_max = DEFAULT_SPEC_MAX
self.weighting = DEFAULT_WEIGHTING
self.update_weighting()
self.freq = self.proc.get_freq_scale()
self.timerange_s = DEFAULT_TIMERANGE
self.canvas_width = 100.
self.old_index = 0
self.overlap = 3. / 4.
self.overlap_frac = Fraction(3, 4)
self.dT_s = self.fft_size * (1. - self.overlap) / float(SAMPLING_RATE)
self.PlotZoneImage.setlog10freqscale() # DEFAULT_FREQ_SCALE = 1 #log10
self.PlotZoneImage.setfreqrange(self.minfreq, self.maxfreq)
self.PlotZoneImage.setspecrange(self.spec_min, self.spec_max)
self.PlotZoneImage.setweighting(self.weighting)
self.PlotZoneImage.settimerange(self.timerange_s, self.dT_s)
self.update_jitter()
sfft_rate_frac = Fraction(SAMPLING_RATE, self.fft_size) / (Fraction(1) - self.overlap_frac) / 1000
self.PlotZoneImage.set_sfft_rate(sfft_rate_frac)
# initialize the settings dialog
self.settings_dialog = Spectrogram_Settings_Dialog(self, self.logger)
self.audiobackend.underflow.connect(self.PlotZoneImage.plotImage.canvasscaledspectrogram.syncOffsets)
self.last_data_time = 0.
self.mustRestart = False
def __init__(self, parent, sharedGLWidget, logger=PrintLogger()):
super().__init__(parent)
self.logger = logger
self.audiobuffer = None
self.setObjectName("Spectrum_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneSpect = SpectrumPlotWidget(self, sharedGLWidget,
self.logger)
self.PlotZoneSpect.setObjectName("PlotZoneSpect")
self.gridLayout.addWidget(self.PlotZoneSpect, 0, 0, 1, 1)
# initialize the class instance that will do the fft
self.proc = audioproc(self.logger)
self.maxfreq = DEFAULT_MAXFREQ
self.proc.set_maxfreq(self.maxfreq)
self.minfreq = DEFAULT_MINFREQ
self.fft_size = 2**DEFAULT_FFT_SIZE * 32
self.proc.set_fftsize(self.fft_size)
self.spec_min = DEFAULT_SPEC_MIN
self.spec_max = DEFAULT_SPEC_MAX
self.weighting = DEFAULT_WEIGHTING
self.dual_channels = False
self.response_time = DEFAULT_RESPONSE_TIME
self.update_weighting()
self.freq = self.proc.get_freq_scale()
self.old_index = 0
self.overlap = 3. / 4.
self.update_display_buffers()
# set kernel and parameters for the smoothing filter
self.setresponsetime(self.response_time)
self.PlotZoneSpect.setlogfreqscale() #DEFAULT_FREQ_SCALE = 1 #log10
self.PlotZoneSpect.setfreqrange(self.minfreq, self.maxfreq)
self.PlotZoneSpect.setspecrange(self.spec_min, self.spec_max)
self.PlotZoneSpect.setweighting(self.weighting)
self.PlotZoneSpect.set_peaks_enabled(True)
self.PlotZoneSpect.set_baseline_displayUnits(0.)
self.PlotZoneSpect.setShowFreqLabel(DEFAULT_SHOW_FREQ_LABELS)
# initialize the settings dialog
self.settings_dialog = Spectrum_Settings_Dialog(self, self.logger)
def __init__(self, parent, sharedGLWidget, logger=PrintLogger()):
super().__init__(parent)
self.audiobuffer = None
self.logger = logger
self.setObjectName("Scope_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, sharedGLWidget, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.settings_dialog = Scope_Settings_Dialog(self, self.logger)
self.timerange = DEFAULT_TIMERANGE
def __init__(self, parent=None, logger=PrintLogger()):
QtGui.QWidget.__init__(self, parent)
self.audiobuffer = None
self.logger = logger
self.setObjectName("Scope_Widget")
self.gridLayout = QtGui.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.setStyleSheet(STYLESHEET)
self.settings_dialog = Scope_Settings_Dialog(self, self.logger)
self.timerange = DEFAULT_TIMERANGE
def __init__(self, parent, logger=PrintLogger()):
QtGui.QWidget.__init__(self, parent)
self.logger = logger
self.audiobuffer = None
self.setObjectName("Spectrum_Widget")
self.gridLayout = QtGui.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneSpect = HistPlot(self, self.logger)
self.PlotZoneSpect.setObjectName("PlotZoneSpect")
self.gridLayout.addWidget(self.PlotZoneSpect, 0, 0, 1, 1)
self.setStyleSheet(STYLESHEET)
self.spec_min = DEFAULT_SPEC_MIN
self.spec_max = DEFAULT_SPEC_MAX
self.weighting = DEFAULT_WEIGHTING
self.response_time = DEFAULT_RESPONSE_TIME
self.PlotZoneSpect.setspecrange(self.spec_min, self.spec_max)
self.PlotZoneSpect.setweighting(self.weighting)
self.filters = octave_filters(DEFAULT_BANDSPEROCTAVE)
#self.bankbuffers = [RingBuffer() for band in range(0, DEFAULT_BANDSPEROCTAVE*NOCTAVE)]
self.dispbuffers = [0] * DEFAULT_BANDSPEROCTAVE * NOCTAVE
# an exponential smoothing filter is a simple IIR filter
# s_i = alpha*x_i + (1-alpha)*s_{i-1}
#we compute alpha so that the N most recent samples represent 100*w percent of the output
w = 0.65
decs = self.filters.get_decs()
ns = [self.response_time * SAMPLING_RATE / dec for dec in decs]
Ns = [2 * 4096 / dec for dec in decs]
self.alphas = [1. - (1. - w)**(1. / (n + 1)) for n in ns]
#print ns, Ns
self.kernels = self.compute_kernels(self.alphas, Ns)
# initialize the settings dialog
self.settings_dialog = OctaveSpectrum_Settings_Dialog(
self, self.logger)
def __init__(self, parent, logger=PrintLogger()):
QtGui.QWidget.__init__(self, parent)
self.logger = logger
self.audiobuffer = None
self.setObjectName("Spectrum_Widget")
self.gridLayout = QtGui.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
#self.PlotZoneSpect = SpectPlot(self, self.logger)
self.PlotZoneSpect = GLPlotWidget(self, self.logger)
self.PlotZoneSpect.setObjectName("PlotZoneSpect")
self.gridLayout.addWidget(self.PlotZoneSpect, 0, 0, 1, 1)
self.setStyleSheet(STYLESHEET)
# initialize the class instance that will do the fft
self.proc = audioproc(self.logger)
self.maxfreq = DEFAULT_MAXFREQ
self.proc.set_maxfreq(self.maxfreq)
self.minfreq = DEFAULT_MINFREQ
self.fft_size = 2**DEFAULT_FFT_SIZE * 32
self.proc.set_fftsize(self.fft_size)
self.spec_min = DEFAULT_SPEC_MIN
self.spec_max = DEFAULT_SPEC_MAX
self.weighting = DEFAULT_WEIGHTING
self.dual_channels = False
self.PlotZoneSpect.setlogfreqscale() #DEFAULT_FREQ_SCALE = 1 #log10
self.PlotZoneSpect.setfreqrange(self.minfreq, self.maxfreq)
self.PlotZoneSpect.setspecrange(self.spec_min, self.spec_max)
self.PlotZoneSpect.setweighting(self.weighting)
self.PlotZoneSpect.set_peaks_enabled(True)
self.PlotZoneSpect.set_baseline_displayUnits(0.)
self.PlotZoneSpect.setShowFreqLabel(DEFAULT_SHOW_FREQ_LABELS)
# initialize the settings dialog
self.settings_dialog = Spectrum_Settings_Dialog(self, self.logger)
def __init__(self, parent=None, logger=PrintLogger()):
super().__init__(parent)
self.setObjectName("Levels_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
font = QtGui.QFont()
font.setPointSize(14)
font.setWeight(75)
font.setBold(True)
self.label_peak = QtWidgets.QLabel(self)
self.label_peak.setFont(font)
# QtCore.Qt.AlignBottom|QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft
self.label_peak.setAlignment(QtCore.Qt.AlignBottom | QtCore.Qt.AlignRight)
self.label_peak.setObjectName("label_peak")
self.label_peak_legend = QtWidgets.QLabel(self)
self.label_peak_legend.setAlignment(QtCore.Qt.AlignTop | QtCore.Qt.AlignRight)
self.label_peak_legend.setObjectName("label_peak_legend")
self.label_rms = QtWidgets.QLabel(self)
self.label_rms.setFont(font)
self.label_rms.setAlignment(QtCore.Qt.AlignBottom | QtCore.Qt.AlignRight)
self.label_rms.setObjectName("label_rms")
self.label_rms_legend = QtWidgets.QLabel(self)
self.label_rms_legend.setAlignment(QtCore.Qt.AlignTop | QtCore.Qt.AlignRight)
self.label_rms_legend.setObjectName("label_rms_legend")
self.meter = qsynthMeter(self)
self.meter.setStyleSheet(STYLESHEET)
self.meter.setObjectName("meter")
self.gridLayout.addWidget(self.label_peak, 0, 0, 1, 1)
self.gridLayout.addWidget(self.label_peak_legend, 1, 0, 1, 1)
self.gridLayout.addWidget(self.label_rms, 2, 0, 1, 1)
self.gridLayout.addWidget(self.label_rms_legend, 3, 0, 1, 1)
self.gridLayout.addWidget(self.meter, 0, 1, 4, 1)
self.label_rms.setText("-100.0")
self.label_peak.setText("-100.0")
self.label_rms_legend.setText("dB FS\n RMS")
self.label_peak_legend.setText("dB FS\n Peak")
self.label_rms.setTextFormat(QtCore.Qt.PlainText)
self.label_peak.setTextFormat(QtCore.Qt.PlainText)
# self.label_rms.setSizePolicy(QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding))
# self.label_rms_legend.setSizePolicy(QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding))
# self.label_peak.setSizePolicy(QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding))
# self.label_peak_legend.setSizePolicy(QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding))
self.logger = logger
self.audiobuffer = None
# initialize the settings dialog
self.settings_dialog = Levels_Settings_Dialog(self, self.logger)
# initialize the class instance that will do the fft
self.proc = audioproc(self.logger)
# time = SMOOTH_DISPLAY_TIMER_PERIOD_MS/1000. #DISPLAY
# time = 0.025 #IMPULSE setting for a sound level meter
# time = 0.125 #FAST setting for a sound level meter
# time = 1. #SLOW setting for a sound level meter
self.response_time = 0.300 # 300ms is a common value for VU meters
# an exponential smoothing filter is a simple IIR filter
# s_i = alpha*x_i + (1-alpha)*s_{i-1}
# we compute alpha so that the n most recent samples represent 100*w percent of the output
w = 0.65
n = self.response_time * SAMPLING_RATE
N = 5*n
self.alpha = 1. - (1. - w) ** (1. / (n + 1))
self.kernel = (1. - self.alpha) ** (np.arange(0, N)[::-1])
# first channel
self.level_rms = -30.
self.level_max = -30.
self.old_rms = 1e-30
self.old_max = 1e-30
# second channel
self.level_rms_2 = -30.
self.level_max_2 = -30.
self.old_rms_2 = 1e-30
self.old_max_2 = 1e-30
response_time_peaks = 0.025 # 25ms for instantaneous peaks
n2 = response_time_peaks / (SMOOTH_DISPLAY_TIMER_PERIOD_MS / 1000.)
self.alpha2 = 1. - (1. - w) ** (1. / (n2 + 1))
self.two_channels = False
self.i = 0
def __init__(self, parent, audiobackend, logger=PrintLogger()):
QtGui.QWidget.__init__(self, parent)
self.logger = logger
self.audiobuffer = None
self.setObjectName("Generator_Widget")
self.gridLayout = QtGui.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.comboBox_generator_kind = QtGui.QComboBox(self)
self.comboBox_generator_kind.setObjectName("comboBox_generator_kind")
self.comboBox_generator_kind.addItem("Sine")
self.comboBox_generator_kind.addItem("White noise")
self.comboBox_generator_kind.addItem("Pink noise")
self.comboBox_generator_kind.addItem("Sweep")
self.comboBox_generator_kind.addItem("Burst")
self.comboBox_generator_kind.setCurrentIndex(
DEFAULT_GENERATOR_KIND_INDEX)
sinePageWidget = QtGui.QWidget(self)
whitePageWidget = QtGui.QWidget(self)
pinkPageWidget = QtGui.QWidget(self)
sweepPageWidget = QtGui.QWidget(self)
burstPageWidget = QtGui.QWidget(self)
self.stackedLayout = QtGui.QStackedLayout()
self.stackedLayout.addWidget(sinePageWidget)
self.stackedLayout.addWidget(whitePageWidget)
self.stackedLayout.addWidget(pinkPageWidget)
self.stackedLayout.addWidget(sweepPageWidget)
self.stackedLayout.addWidget(burstPageWidget)
self.spinBox_sine_frequency = QtGui.QSpinBox(sinePageWidget)
self.spinBox_sine_frequency.setKeyboardTracking(False)
self.spinBox_sine_frequency.setMinimum(20)
self.spinBox_sine_frequency.setMaximum(22000)
self.spinBox_sine_frequency.setProperty("value",
DEFAULT_SINE_FREQUENCY)
self.spinBox_sine_frequency.setObjectName("spinBox_sine_frequency")
self.spinBox_sine_frequency.setSuffix(" Hz")
self.sineLayout = QtGui.QFormLayout(sinePageWidget)
self.sineLayout.addRow("Frequency:", self.spinBox_sine_frequency)
self.spinBox_sweep_startfrequency = QtGui.QSpinBox(sweepPageWidget)
self.spinBox_sweep_startfrequency.setKeyboardTracking(False)
self.spinBox_sweep_startfrequency.setMinimum(20)
self.spinBox_sweep_startfrequency.setMaximum(22000)
self.spinBox_sweep_startfrequency.setProperty(
"value", DEFAULT_SWEEP_STARTFREQUENCY)
self.spinBox_sweep_startfrequency.setObjectName(
"spinBox_sweep_startfrequency")
self.spinBox_sweep_startfrequency.setSuffix(" Hz")
self.spinBox_sweep_stopfrequency = QtGui.QSpinBox(sweepPageWidget)
self.spinBox_sweep_stopfrequency.setKeyboardTracking(False)
self.spinBox_sweep_stopfrequency.setMinimum(20)
self.spinBox_sweep_stopfrequency.setMaximum(22000)
self.spinBox_sweep_stopfrequency.setProperty(
"value", DEFAULT_SWEEP_STOPFREQUENCY)
self.spinBox_sweep_stopfrequency.setObjectName(
"spinBox_sweep_stopfrequency")
self.spinBox_sweep_stopfrequency.setSuffix(" Hz")
self.spinBox_sweep_period = QtGui.QDoubleSpinBox(sweepPageWidget)
self.spinBox_sweep_period.setKeyboardTracking(False)
self.spinBox_sweep_period.setDecimals(2)
self.spinBox_sweep_period.setSingleStep(1)
self.spinBox_sweep_period.setMinimum(0.01)
self.spinBox_sweep_period.setMaximum(60)
self.spinBox_sweep_period.setProperty("value", DEFAULT_SWEEP_PERIOD_S)
self.spinBox_sweep_period.setObjectName("spinBox_sweep_period")
self.spinBox_sweep_period.setSuffix(" s")
self.sweepLayout = QtGui.QFormLayout(sweepPageWidget)
self.sweepLayout.addRow("Start frequency:",
self.spinBox_sweep_startfrequency)
self.sweepLayout.addRow("Stop frequency:",
self.spinBox_sweep_stopfrequency)
self.sweepLayout.addRow("Period:", self.spinBox_sweep_period)
self.spinBox_burst_period = QtGui.QDoubleSpinBox(burstPageWidget)
self.spinBox_burst_period.setKeyboardTracking(False)
self.spinBox_burst_period.setDecimals(2)
self.spinBox_burst_period.setSingleStep(1)
self.spinBox_burst_period.setMinimum(0.01)
self.spinBox_burst_period.setMaximum(60)
self.spinBox_burst_period.setProperty("value", DEFAULT_BURST_PERIOD_S)
self.spinBox_burst_period.setObjectName("spinBox_burst_period")
self.spinBox_burst_period.setSuffix(" s")
self.burstLayout = QtGui.QFormLayout(burstPageWidget)
self.burstLayout.addRow("Period:", self.spinBox_burst_period)
self.t = 0.
self.t_start = 0.
self.t_stop = RAMP_LENGTH
self.state = stopped
self.audiobackend = audiobackend
self.p = pyaudio.PyAudio()
self.device = None
self.stream = None
# we will try to open all the input devices until one
# works, starting by the default input device
for device in self.audiobackend.output_devices:
self.logger.push("Opening the stream")
self.stream = self.open_output_stream(device)
self.device = device
self.logger.push("Trying to write to output device %d" % device)
if self.test_output_stream(self.stream):
self.logger.push("Success")
break
else:
self.logger.push("Fail")
#stream.close()
#self.p.terminate()
self.startStopButton = QtGui.QPushButton(self)
startStopIcon = QtGui.QIcon()
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/start.svg"),
QtGui.QIcon.Normal, QtGui.QIcon.Off)
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/stop.svg"),
QtGui.QIcon.Normal, QtGui.QIcon.On)
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/stop.svg"),
QtGui.QIcon.Active, QtGui.QIcon.On)
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/stop.svg"),
QtGui.QIcon.Selected, QtGui.QIcon.On)
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/stop.svg"),
QtGui.QIcon.Disabled, QtGui.QIcon.On)
self.startStopButton.setIcon(startStopIcon)
self.startStopButton.setObjectName("generatorStartStop")
self.startStopButton.setText("Start")
self.startStopButton.setToolTip("Start/Stop generator")
self.startStopButton.setCheckable(True)
self.startStopButton.setChecked(False)
self.gridLayout.addWidget(self.startStopButton, 0, 0, 1, 1)
self.gridLayout.addWidget(self.comboBox_generator_kind, 1, 0, 1, 1)
self.gridLayout.addLayout(self.stackedLayout, 2, 0, 1, 1)
self.connect(self.comboBox_generator_kind,
QtCore.SIGNAL('activated(int)'),
self.stackedLayout.setCurrentIndex)
self.connect(self.startStopButton, QtCore.SIGNAL('toggled(bool)'),
self.startStopButton_toggle)
#self.setStyleSheet(STYLESHEET)
#self.response_time = DEFAULT_RESPONSE_TIME
# initialize the settings dialog
self.settings_dialog = Generator_Settings_Dialog(self, self.logger)
devices = self.audiobackend.get_readable_output_devices_list()
for device in devices:
self.settings_dialog.comboBox_outputDevice.addItem(device)
if self.device <> None:
self.settings_dialog.comboBox_outputDevice.setCurrentIndex(
self.audiobackend.output_devices.index(self.device))
self.connect(self.settings_dialog.comboBox_outputDevice,
QtCore.SIGNAL('currentIndexChanged(int)'),
self.device_changed)
self.sweepGenerator = SweepGenerator()
self.connect(self.spinBox_sweep_startfrequency,
QtCore.SIGNAL('valueChanged(int)'),
self.sweepGenerator.setf1)
self.connect(self.spinBox_sweep_stopfrequency,
QtCore.SIGNAL('valueChanged(int)'),
self.sweepGenerator.setf2)
self.connect(self.spinBox_sweep_period,
QtCore.SIGNAL('valueChanged(double)'),
self.sweepGenerator.setT)
def __init__(self, parent=None, logger=PrintLogger()):
super().__init__(parent)
self.audiobuffer = None
self.logger = logger
self.previous_delay_message = ""
self.previous_correlation_message = ""
self.previous_polarity_message = ""
self.previous_channel_info_message = ""
self.setObjectName("Delay_Estimator_Widget")
self.layout = QtWidgets.QFormLayout(self)
self.layout.setObjectName("layout")
font = QtGui.QFont()
font.setPointSize(14)
font.setWeight(75)
font.setBold(True)
self.delay_label = QtWidgets.QLabel(self)
self.delay_label.setFont(font)
self.delay_label.setObjectName("delay_label")
self.delay_text_label = QtWidgets.QLabel(self)
self.delay_text_label.setObjectName("delay_text_label")
self.delay_text_label.setText("Delay:")
self.correlation_label = QtWidgets.QLabel(self)
self.correlation_label.setObjectName("Correlation_label")
self.correlation_text_label = QtWidgets.QLabel(self)
self.correlation_text_label.setObjectName("correlation_text_label")
self.correlation_text_label.setText("Confidence:")
self.polarity_label = QtWidgets.QLabel(self)
self.polarity_label.setFont(font)
self.polarity_label.setObjectName("polarity_label")
self.polarity_text_label = QtWidgets.QLabel(self)
self.polarity_text_label.setObjectName("polarity_text_label")
self.polarity_text_label.setText("Polarity:")
self.channel_info_label = QtWidgets.QLabel(self)
self.channel_info_label.setObjectName("channel_info_label")
self.layout.addRow(self.delay_text_label, self.delay_label)
self.layout.addRow(self.correlation_text_label, self.correlation_label)
self.layout.addRow(self.polarity_text_label, self.polarity_label)
self.layout.addRow(None, self.channel_info_label)
self.settings_dialog = Delay_Estimator_Settings_Dialog(
self, self.logger)
# We will decimate several times
# no decimation => 1/fs = 23 µs resolution
# 1 ms resolution => fs = 1000 Hz is enough => can divide the sampling rate by 44 !
# if I decimate 2 times (2**2 = 4 => 0.092 ms (3 cm) resolution)!
# if I decimate 3 times (2**3 = 8 => 0.184 ms (6 cm) resolution)!
# if I decimate 4 times (2**4 = 16 => 0.368 ms (12 cm) resolution)!
# if I decimate 5 times (2**5 = 32 => 0.7 ms (24 cm) resolution)!
# (actually, I could fit a gaussian on the cross-correlation peak to get
# higher resolution even at low sample rates)
self.Ndec = 2
self.subsampled_sampling_rate = SAMPLING_RATE / 2**(self.Ndec)
[self.bdec, self.adec] = generated_filters.PARAMS['dec']
self.bdec = numpy.array(self.bdec)
self.adec = numpy.array(self.adec)
self.zfs0 = subsampler_filtic(self.Ndec, self.bdec, self.adec)
self.zfs1 = subsampler_filtic(self.Ndec, self.bdec, self.adec)
# ringbuffers for the subsampled data
self.ringbuffer0 = RingBuffer(self.logger)
self.ringbuffer1 = RingBuffer(self.logger)
self.delayrange_s = DEFAULT_DELAYRANGE # confidence range
self.old_Xcorr = None
self.old_index = 0
self.two_channels = False
self.delay_ms = 0.
self.distance_m = 0.
self.correlation = 0.
self.Xcorr_extremum = 0.
def __init__(self, parent, audiobackend, logger=PrintLogger()):
super().__init__(parent)
self.logger = logger
self.audiobuffer = None
self.setObjectName("Generator_Widget")
self.grid_layout = QtWidgets.QGridLayout(self)
self.grid_layout.setObjectName("grid_layout")
self.generators = []
self.generators.append(SineGenerator(self, logger))
self.generators.append(WhiteGenerator(self, logger))
self.generators.append(PinkGenerator(self, logger))
self.generators.append(SweepGenerator(self, logger))
self.generators.append(BurstGenerator(self, logger))
self.combobox_generator_kind = QtWidgets.QComboBox(self)
self.combobox_generator_kind.setObjectName("combobox_generator_kind")
self.stacked_settings_layout = QtWidgets.QStackedLayout()
for generator in self.generators:
self.combobox_generator_kind.addItem(generator.name)
self.stacked_settings_layout.addWidget(generator.settingsWidget())
self.combobox_generator_kind.setCurrentIndex(DEFAULT_GENERATOR_KIND_INDEX)
self.t = 0.
self.t_start = 0.
self.t_stop = RAMP_LENGTH
self.state = STOPPED
self.audiobackend = audiobackend
self.stream_stop_ramp_finished.connect(self.stop_stream_after_ramp)
self.device = None
self.stream = None
# we will try to open all the output devices until one
# works, starting by the default input device
for device in self.audiobackend.output_devices:
self.logger.push("Opening the stream")
try:
self.stream = self.audiobackend.open_output_stream(device, self.audio_callback)
self.stream.start_stream()
self.stream.stop_stream()
self.device = device
self.logger.push("Success")
break
except:
self.logger.push("Fail")
self.start_stop_button = QtWidgets.QPushButton(self)
startStopIcon = QtGui.QIcon()
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/start.svg"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/stop.svg"), QtGui.QIcon.Normal, QtGui.QIcon.On)
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/stop.svg"), QtGui.QIcon.Active, QtGui.QIcon.On)
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/stop.svg"), QtGui.QIcon.Selected, QtGui.QIcon.On)
startStopIcon.addPixmap(QtGui.QPixmap(":/images-src/stop.svg"), QtGui.QIcon.Disabled, QtGui.QIcon.On)
self.start_stop_button.setIcon(startStopIcon)
self.start_stop_button.setObjectName("generatorStartStop")
self.start_stop_button.setText("Start")
self.start_stop_button.setToolTip("Start/Stop generator")
self.start_stop_button.setCheckable(True)
self.start_stop_button.setChecked(False)
self.grid_layout.addWidget(self.start_stop_button, 0, 0, 1, 1)
self.grid_layout.addWidget(self.combobox_generator_kind, 1, 0, 1, 1)
self.grid_layout.addLayout(self.stacked_settings_layout, 2, 0, 1, 1)
self.combobox_generator_kind.activated.connect(self.stacked_settings_layout.setCurrentIndex)
self.start_stop_button.toggled.connect(self.start_stop_button_toggle)
# initialize the settings dialog
devices = self.audiobackend.get_readable_output_devices_list()
if self.device is not None:
device_index = self.audiobackend.output_devices.index(self.device)
else:
device_index = None
self.settings_dialog = Generator_Settings_Dialog(self, self.logger, devices, device_index)
self.settings_dialog.combobox_output_device.currentIndexChanged.connect(self.device_changed)
def __init__(self, parent=None, logger=PrintLogger()):
super().__init__(parent)
self.setObjectName("LongLevels_Widget")
self.logger = logger
self.setObjectName("Scope_Widget")
self.gridLayout = QtWidgets.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.PlotZoneUp.setverticaltitle("Level (dB FS RMS)")
self.PlotZoneUp.sethorizontaltitle("Time (min)")
self.PlotZoneUp.setTrackerFormatter(lambda x, y: "%.3g min, %.3g" %
(x, y))
self.level_min = DEFAULT_LEVEL_MIN
self.level_max = DEFAULT_LEVEL_MAX
self.PlotZoneUp.setverticalrange(self.level_min, self.level_max)
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.logger = logger
self.audiobuffer = None
# initialize the settings dialog
self.settings_dialog = LongLevels_Settings_Dialog(self, self.logger)
# initialize the class instance that will do the fft
self.proc = audioproc(self.logger)
#self.response_time = 60. # 1 minute
self.response_time = 1.
# an exponential smoothing filter is a simple IIR filter
# s_i = alpha*x_i + (1-alpha)*s_{i-1}
# we compute alpha so that the n most recent samples represent 100*w percent of the output
w = 0.65
# how many times we should decimate to end up with 100 points in the kernel
self.Ndec = int(
max(0,
np.floor(
(np.log2(self.response_time * SAMPLING_RATE / 100.)))))
n = self.response_time * SAMPLING_RATE / 2**self.Ndec
N = int(5 * n)
self.alpha = 1. - (1. - w)**(1. / (n + 1))
self.kernel = (1. - self.alpha)**(np.arange(0, N)[::-1])
self.level = None # 1e-30
self.level_rms = -200.
self.two_channels = False
self.i = 0
self.subsampled_sampling_rate = SAMPLING_RATE / 2**(self.Ndec)
self.subsampler = Subsampler(self.Ndec)
self.old_index = 0
self.length_seconds = 60. * 10
# actually this should be linked to the pixel width of the plot area
self.length_samples = self.length_seconds * self.subsampled_sampling_rate
# ringbuffer for the subsampled data
self.ringbuffer = RingBuffer(self.logger)
