def WriteAudioSeries(writer, tag, n_audio=1):
"""Write a few dummy audio clips to writer."""
step = 0
session = session_lib.Session()
min_frequency_hz = 440
max_frequency_hz = 880
sample_rate = 4000
duration_frames = sample_rate * 0.5 # 0.5 seconds.
frequencies_per_run = 1
num_channels = 2
p = array_ops.placeholder("float32", (frequencies_per_run, duration_frames,
num_channels))
s = logging_ops.audio_summary(tag, p, sample_rate)
for _ in xrange(n_audio):
# Generate a different frequency for each channel to show stereo works.
frequencies = np.random.random_integers(
min_frequency_hz,
max_frequency_hz,
size=(frequencies_per_run, num_channels))
tiled_frequencies = np.tile(frequencies, (1, duration_frames))
tiled_increments = np.tile(
np.arange(0, duration_frames),
(num_channels, 1)).T.reshape(1, duration_frames * num_channels)
tones = np.sin(2.0 * np.pi * tiled_frequencies * tiled_increments /
sample_rate)
tones = tones.reshape(frequencies_per_run, duration_frames, num_channels)
summ = session.run(s, feed_dict={p: tones})
writer.add_summary(summ, step)
step += 20
session.close()
def testAudioSummary(self):
with self.cached_session():
c = constant_op.constant(3.0)
s = logging_ops.audio_summary('tag', c, sample_rate=8000)
self.assertEqual(s.op.type, u'AudioSummaryV2')
def testAudioSummary(self):
with self.cached_session():
c = constant_op.constant(3.0)
s = logging_ops.audio_summary('tag', c, sample_rate=8000)
self.assertEqual(s.op.type, u'AudioSummaryV2')
