def testReduceChannels(self):
n_in = 7
n_out = 2
n_samples = 10
data_in = np.arange(n_in * n_samples)
buf = AudioBuffer(n_samples, n_in)
data_out = buf.reduce_channels(data_in, n_in, n_out)
correct = [x for x in range(n_in * n_samples) if x % n_in == 0 or (x - 1) % n_in == 0]
self.assertListFloatEqual(correct, data_out)
def setUp(self):
self.n_channels = 2
self.buff32 = AudioBuffer(16, self.n_channels)
self.data_str = '\x01\x02\x03\x04'
self.data_strs = [
'\x01\x02\x03\x04', '\x01\x02\x03\x04', '\x01\x02', '\x01', '\x01'
]
self.num_types = 5
self.data12 = [''] * self.num_types
for i in range(len(self.data_strs)):
self.data12[i] = self.data_str * self.n_channels * 12
def testReduceChannels(self):
n_in = 7
n_out = 2
n_samples = 10
data_in = np.arange(n_in * n_samples)
buf = AudioBuffer(n_samples, n_in)
data_out = buf.reduce_channels(data_in, n_in, n_out)
correct = [
x for x in range(n_in * n_samples)
if x % n_in == 0 or (x - 1) % n_in == 0
]
self.assertListFloatEqual(correct, data_out)
def setUp(self):
self.n_channels = 2
self.buff32 = AudioBuffer(16, self.n_channels)
self.data_str = '\x01\x02\x03\x04'
self.data_strs = [
'\x01\x02\x03\x04',
'\x01\x02\x03\x04',
'\x01\x02',
'\x01',
'\x01']
self.num_types = 5
self.data12 = [''] * self.num_types
for i in range(len(self.data_strs)):
self.data12[i] = self.data_str * self.n_channels * 12
PLOT_POLAR = True
EXTERNAL_PLOT = False
PLAY_AUDIO = False
TIMEOUT = 1
# Setup mics
mic_layout = np.array([[-.03, 0], [.01, 0], [-.01, 0], [.03, 0]])
# Track whether we have quit or not
done = False
# Events for signaling new data is available
audio_produced_event = threading.Event()
data_produced_event = threading.Event()
# Setup data buffers - use 4 * buffer length in case data get's backed up
# at any point, so it will not be lost
in_buf = AudioBuffer(length=4 * FRAMES_PER_BUF, n_channels=NUM_CHANNELS_IN)
out_buf = AudioBuffer(length=4 * FRAMES_PER_BUF, n_channels=NUM_CHANNELS_OUT)
def read_in_data(in_data, frame_count, time_info, status_flags):
if done: # Must do this or calls to stop_stream may not succeed
return None, pyaudio.paComplete
write_num = in_buf.get_available_write()
if write_num > frame_count:
write_num = frame_count
in_buf.write_bytes(in_data[:(write_num * SAMPLE_SIZE * NUM_CHANNELS_IN)])
in_buf.notify_of_audio()
return None, pyaudio.paContinue
def write_out_data(in_data, frame_count, time_info, status_flags):
MIC_ABOVE = np.array([0, 0, 1])
CAMERA_LOC = np.array([0, 0, 0])
# Setup mics
mic_layout = np.array([[.03, 0], [-.01, 0], [.01, 0], [-.03, 0]])
# Track whether we have quit or not
done = False
switch_beamforming = False # Switch beamforming from on to off or off to on
# Events for signaling new data is available
audio_produced_event = threading.Event()
data_produced_event = threading.Event()
# Setup data buffers - use 4 * buffer length in case data get's backed up
# at any point, so it will not be lost
in_buf = AudioBuffer(length=4 * FRAMES_PER_BUF, n_channels=NUM_CHANNELS_IN)
out_buf = AudioBuffer(length=4 * FRAMES_PER_BUF, n_channels=NUM_CHANNELS_OUT)
# Setup record buffer
N_SECS_RECORD = 20
N_RECORD_FRAMES = N_SECS_RECORD * SAMPLE_RATE
record_buf = AudioBuffer(length=N_RECORD_FRAMES, n_channels=NUM_CHANNELS_OUT)
def read_in_data(in_data, frame_count, time_info, status_flags):
if done: # Must do this or calls to stop_stream may not succeed
return None, pyaudio.paComplete
write_num = in_buf.get_available_write()
if write_num > frame_count:
write_num = frame_count
in_buf.write_bytes(in_data[:(write_num * SAMPLE_SIZE * NUM_CHANNELS_IN)])
class AudioBufferTest(unittest.TestCase):
def setUp(self):
self.n_channels = 2
self.buff32 = AudioBuffer(16, self.n_channels)
self.data_str = '\x01\x02\x03\x04'
self.data_strs = [
'\x01\x02\x03\x04',
'\x01\x02\x03\x04',
'\x01\x02',
'\x01',
'\x01']
self.num_types = 5
self.data12 = [''] * self.num_types
for i in range(len(self.data_strs)):
self.data12[i] = self.data_str * self.n_channels * 12
def data_of_length(self, length):
return self.data_str * self.n_channels * length
def testBufWrite(self):
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_bytes(self.data_of_length(4))
self.assertEquals(self.buff32.get_available_read(), 16)
def testOverwrite(self):
self.buff32.write_bytes(self.data_of_length(12))
data6 = self.data_of_length(6)
caught = False
try:
self.buff32.write_bytes(data6)
except ValueError as e:
print e.message
caught = True
self.assertEquals(caught, True)
def testOverRead(self):
data4 = self.data_of_length(4)
self.buff32.write_bytes(data4)
data_read = self.buff32.read_bytes(12)
self.assertEquals(data_read, data4)
def testWriteSamples(self):
data = list(numpy.random.rand(12 * self.n_channels))
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 16)
def testReadSamples(self):
data = list(numpy.random.rand(12 * self.n_channels))
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_samples(12)
self.assertListFloatEqual(data, data_read)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 4)
data_read = self.buff32.read_samples(4)
self.assertListFloatEqual(data4, data_read)
def testWriteArray(self):
data = numpy.random.rand(12 * self.n_channels)
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 16)
def testReadArray(self):
data = numpy.random.rand(12 * self.n_channels)
data4 = numpy.random.rand(4 * self.n_channels)
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_samples(12)
self.assertListFloatEqual(data, data_read)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 4)
data_read = self.buff32.read_samples(4)
self.assertListFloatEqual(data_read, data4)
def testRead(self):
self.buff32.write_bytes(self.data_of_length(12))
read_data = self.buff32.read_bytes(12)
print read_data
self.assertEquals(read_data, self.data_of_length(12))
def testWraparoundWrite(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(12)
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
def testWraparoundRead(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(12)
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_bytes(12)
self.assertEquals(data_read, self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 0)
def testInvalidData(self):
caught = False
try:
self.buff32.write_bytes([2]*12)
except ValueError as e:
print e.message
caught = True
self.assertEquals(caught, True)
def testMultipleWraps(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(8)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(16)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(9)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(11)
self.buff32.write_bytes(self.data_of_length(12))
data_read = self.buff32.read_bytes(12)
self.assertEquals(self.buff32.get_available_read(), 4)
self.assertEquals(data_read, self.data_of_length(12))
def testReduceChannels(self):
n_in = 7
n_out = 2
n_samples = 10
data_in = np.arange(n_in * n_samples)
buf = AudioBuffer(n_samples, n_in)
data_out = buf.reduce_channels(data_in, n_in, n_out)
correct = [x for x in range(n_in * n_samples) if x % n_in == 0 or (x - 1) % n_in == 0]
self.assertListFloatEqual(correct, data_out)
def assertListFloatEqual(self, list1, list2):
if not len(list1) == len(list2):
raise AssertionError("Lists differ in lenght. Cannot be equal")
for i in range(len(list1)):
self.assertLessEqual(abs(list1[i] - list2[i]), 1e-4)
def tearDown(self):
print "Completed"
class AudioBufferTest(unittest.TestCase):
def setUp(self):
self.n_channels = 2
self.buff32 = AudioBuffer(16, self.n_channels)
self.data_str = '\x01\x02\x03\x04'
self.data_strs = [
'\x01\x02\x03\x04', '\x01\x02\x03\x04', '\x01\x02', '\x01', '\x01'
]
self.num_types = 5
self.data12 = [''] * self.num_types
for i in range(len(self.data_strs)):
self.data12[i] = self.data_str * self.n_channels * 12
def data_of_length(self, length):
return self.data_str * self.n_channels * length
def testBufWrite(self):
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_bytes(self.data_of_length(4))
self.assertEquals(self.buff32.get_available_read(), 16)
def testOverwrite(self):
self.buff32.write_bytes(self.data_of_length(12))
data6 = self.data_of_length(6)
caught = False
try:
self.buff32.write_bytes(data6)
except ValueError as e:
print e.message
caught = True
self.assertEquals(caught, True)
def testOverRead(self):
data4 = self.data_of_length(4)
self.buff32.write_bytes(data4)
data_read = self.buff32.read_bytes(12)
self.assertEquals(data_read, data4)
def testWriteSamples(self):
data = list(numpy.random.rand(12 * self.n_channels))
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 16)
def testReadSamples(self):
data = list(numpy.random.rand(12 * self.n_channels))
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_samples(12)
self.assertListFloatEqual(data, data_read)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 4)
data_read = self.buff32.read_samples(4)
self.assertListFloatEqual(data4, data_read)
def testWriteArray(self):
data = numpy.random.rand(12 * self.n_channels)
data4 = list(numpy.random.rand(4 * self.n_channels))
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 16)
def testReadArray(self):
data = numpy.random.rand(12 * self.n_channels)
data4 = numpy.random.rand(4 * self.n_channels)
self.buff32.write_samples(data)
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_samples(12)
self.assertListFloatEqual(data, data_read)
self.buff32.write_samples(data4)
self.assertEquals(self.buff32.get_available_read(), 4)
data_read = self.buff32.read_samples(4)
self.assertListFloatEqual(data_read, data4)
def testRead(self):
self.buff32.write_bytes(self.data_of_length(12))
read_data = self.buff32.read_bytes(12)
print read_data
self.assertEquals(read_data, self.data_of_length(12))
def testWraparoundWrite(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(12)
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
def testWraparoundRead(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(12)
self.buff32.write_bytes(self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 12)
data_read = self.buff32.read_bytes(12)
self.assertEquals(data_read, self.data_of_length(12))
self.assertEquals(self.buff32.get_available_read(), 0)
def testInvalidData(self):
caught = False
try:
self.buff32.write_bytes([2] * 12)
except ValueError as e:
print e.message
caught = True
self.assertEquals(caught, True)
def testMultipleWraps(self):
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(8)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(16)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(9)
self.buff32.write_bytes(self.data_of_length(12))
self.buff32.read_bytes(11)
self.buff32.write_bytes(self.data_of_length(12))
data_read = self.buff32.read_bytes(12)
self.assertEquals(self.buff32.get_available_read(), 4)
self.assertEquals(data_read, self.data_of_length(12))
def testReduceChannels(self):
n_in = 7
n_out = 2
n_samples = 10
data_in = np.arange(n_in * n_samples)
buf = AudioBuffer(n_samples, n_in)
data_out = buf.reduce_channels(data_in, n_in, n_out)
correct = [
x for x in range(n_in * n_samples)
if x % n_in == 0 or (x - 1) % n_in == 0
]
self.assertListFloatEqual(correct, data_out)
def assertListFloatEqual(self, list1, list2):
if not len(list1) == len(list2):
raise AssertionError("Lists differ in lenght. Cannot be equal")
for i in range(len(list1)):
self.assertLessEqual(abs(list1[i] - list2[i]), 1e-4)
def tearDown(self):
print "Completed"
FRAMES_PER_BUF = 2048 # Do not go below 64, or above 2048
FFT_LENGTH = FRAMES_PER_BUF
WINDOW_LENGTH = FFT_LENGTH
HOP_LENGTH = WINDOW_LENGTH / 2
NUM_CHANNELS_IN = 2
NUM_CHANNELS_OUT = 2
DO_PLOT = True
PLOT_FREQ = 1 # For PLOT_FREQ = n, will plot every n loops
PLOT_CUTOFF_FREQ = 8000
TIMEOUT = 2 # Number of seconds to wait for new samples before giving up
# Track whether we have quit or not
done = False
# Setup data buffers
in_buf = AudioBuffer(length=4 * FRAMES_PER_BUF, n_channels=NUM_CHANNELS_IN)
out_buf = AudioBuffer(length=4 * FRAMES_PER_BUF, n_channels=NUM_CHANNELS_OUT)
def read_in_data(in_data, frame_count, time_info, status_flags):
if done: # Must do this or calls to stop_stream may not succeed
return None, pyaudio.paComplete
write_num = in_buf.get_available_write()
if write_num > frame_count:
write_num = frame_count
in_buf.write_bytes(in_data[:(write_num * SAMPLE_SIZE * NUM_CHANNELS_IN)])
in_buf.notify_of_audio()
return None, pyaudio.paContinue
def write_out_data(in_data, frame_count, time_info, status_flags):
FRAMES_PER_BUF = 2048 # Do not go below 64, or above 2048
FFT_LENGTH = FRAMES_PER_BUF
WINDOW_LENGTH = FFT_LENGTH
HOP_LENGTH = WINDOW_LENGTH / 2
NUM_CHANNELS_IN = 2
NUM_CHANNELS_OUT = 2
DO_PLOT = True
PLOT_FREQ = 1 # For PLOT_FREQ = n, will plot every n loops
PLOT_CUTOFF_FREQ = 8000
TIMEOUT = 2 # Number of seconds to wait for new samples before giving up
# Track whether we have quit or not
done = False
# Setup data buffers
in_buf = AudioBuffer(length=4 * FRAMES_PER_BUF, n_channels=NUM_CHANNELS_IN)
out_buf = AudioBuffer(length=4 * FRAMES_PER_BUF, n_channels=NUM_CHANNELS_OUT)
def read_in_data(in_data, frame_count, time_info, status_flags):
if done: # Must do this or calls to stop_stream may not succeed
return None, pyaudio.paComplete
write_num = in_buf.get_available_write()
if write_num > frame_count:
write_num = frame_count
in_buf.write_bytes(in_data[:(write_num * SAMPLE_SIZE * NUM_CHANNELS_IN)])
in_buf.notify_of_audio()
return None, pyaudio.paContinue
def write_out_data(in_data, frame_count, time_info, status_flags):
