Ejemplo n.º 1
0
    def Initialize(self, indim, outdim):
        self.warp = 1000.0  # let the samples flowing into the ring buffer set the pace
        self.eegfs = self.samplingrate()
        self.hwfs = int(self.params['HardwareSamplingRate'])
        self.chunk = SigTools.msec2samples(
            float(self.params['HardwareChunkMsec']), self.hwfs)
        ringsize = SigTools.msec2samples(
            float(self.params['NIABufferSizeMsec']), self.hwfs)
        self.ring = SigTools.ring(ringsize, indim[0])
        self.ring.allow_overflow = True
        self.nominal['HardwareSamplesPerPacket'] = SigTools.msec2samples(
            self.nominal['SecondsPerPacket'] * 1000.0, self.hwfs)

        cutoff = float(self.params['DSFilterFreqFactor']) * self.eegfs / 2.0
        order = int(self.params['DSFilterOrder'])
        if order > 0 and cutoff > 0.0:
            self.filter = SigTools.causalfilter(
                freq_hz=cutoff,
                samplingfreq_hz=self.hwfs,
                order=order,
                type='lowpass')  #, method=SigTools.firdesign)
        else:
            self.filter = None
        self.dsind = numpy.linspace(0.0,
                                    self.nominal['HardwareSamplesPerPacket'],
                                    self.nominal['SamplesPerPacket'] + 1,
                                    endpoint=True)
        self.dsind = numpy.round(self.dsind).astype(numpy.int).tolist()

        self._threads['listen'].post('start')
        self._threads['listen'].read('ready', wait=True, remove=True)
        self._check_threads()
	def Initialize(self, indim, outdim):
		self.warp = 1000.0 # let the audio samples flowing into the ring buffer set the pace
		self.eegfs = self.samplingrate()
		self.audiofs = int(self.params['AudioSamplingRate'])
		self.audiobits = int(self.params['AudioBitDepth'])
		self.audiochunk = WavTools.msec2samples(float(self.params['AudioChunkMsec']), self.audiofs)
		self.audiochannels = int(self.params['NumberOfAudioChannels'])
		self.use_env = int(self.params['UseAudioEnvelope'])
		ringsize = WavTools.msec2samples(float(self.params['AudioBufferSizeMsec']), self.audiofs)
		self.ring = SigTools.ring(ringsize, self.audiochannels)
		self.ring.allow_overflow = True
		self.nominal['AudioSamplesPerPacket'] = WavTools.msec2samples(self.nominal['SecondsPerPacket']*1000.0, self.audiofs)
		self.dsind = numpy.linspace(0.0, self.nominal['AudioSamplesPerPacket'], self.nominal['SamplesPerPacket']+1, endpoint=True)
		self.dsind = numpy.round(self.dsind).astype(numpy.int).tolist()
		self._threads['listen'].post('start')
		self._threads['listen'].read('ready', wait=True, remove=True)
		self._check_threads()
	def Initialize(self, indim, outdim):
		self.warp = 1000.0 # let the samples flowing into the ring buffer set the pace
		self.eegfs = self.samplingrate()
		self.hwfs = int(self.params['HardwareSamplingRate'])
		self.chunk = SigTools.msec2samples(float(self.params['HardwareChunkMsec']), self.hwfs)
		ringsize = SigTools.msec2samples(float(self.params['NIABufferSizeMsec']), self.hwfs)
		self.ring = SigTools.ring(ringsize, indim[0])
		self.ring.allow_overflow = True
		self.nominal['HardwareSamplesPerPacket'] = SigTools.msec2samples(self.nominal['SecondsPerPacket']*1000.0, self.hwfs)
		
		cutoff = float(self.params['DSFilterFreqFactor']) * self.eegfs / 2.0
		order = int(self.params['DSFilterOrder'])
		if order > 0 and cutoff > 0.0:
			self.filter = SigTools.causalfilter(freq_hz=cutoff, samplingfreq_hz=self.hwfs, order=order, type='lowpass') #, method=SigTools.firdesign)
		else:
			self.filter = None
		self.dsind = numpy.linspace(0.0, self.nominal['HardwareSamplesPerPacket'], self.nominal['SamplesPerPacket']+1, endpoint=True)
		self.dsind = numpy.round(self.dsind).astype(numpy.int).tolist()

		self._threads['listen'].post('start')
		self._threads['listen'].read('ready', wait=True, remove=True)
		self._check_threads()
Ejemplo n.º 4
0
 def Initialize(self, indim, outdim):
     self.warp = 1000.0  # let the audio samples flowing into the ring buffer set the pace
     self.eegfs = self.samplingrate()
     self.audiofs = int(self.params['AudioSamplingRate'])
     self.audiobits = int(self.params['AudioBitDepth'])
     self.audiochunk = WavTools.msec2samples(
         float(self.params['AudioChunkMsec']), self.audiofs)
     self.audiochannels = int(self.params['NumberOfAudioChannels'])
     self.use_env = int(self.params['UseAudioEnvelope'])
     ringsize = WavTools.msec2samples(
         float(self.params['AudioBufferSizeMsec']), self.audiofs)
     self.ring = SigTools.ring(ringsize, self.audiochannels)
     self.ring.allow_overflow = True
     self.nominal['AudioSamplesPerPacket'] = WavTools.msec2samples(
         self.nominal['SecondsPerPacket'] * 1000.0, self.audiofs)
     self.dsind = numpy.linspace(0.0,
                                 self.nominal['AudioSamplesPerPacket'],
                                 self.nominal['SamplesPerPacket'] + 1,
                                 endpoint=True)
     self.dsind = numpy.round(self.dsind).astype(numpy.int).tolist()
     self._threads['listen'].post('start')
     self._threads['listen'].read('ready', wait=True, remove=True)
     self._check_threads()