我正在尝试训练音频数据的一些模型。我写了一些代码来加载一些mp3文件,将它们分成短片(每片大约0.1秒)并分批分析这些片段。所以,我写了这段代码。在张量流中批处理音频数据
import glob import tensorflow as tf from tensorflow.contrib import ffmpeg def load(fname): binary = tf.read_file(fname) return ffmpeg.decode_audio(binary, file_format='mp3', samples_per_second=44100, channel_count=2) def preprocess(audio, seconds_per_sample=0.1, rate=44100): # pad to a with 1 second of silence front and back front = tf.zeros([rate, 2], dtype=audio.dtype) back = tf.zeros([rate - tf.mod(tf.shape(audio)[0], rate) + rate, 2], dtype=audio.dtype) audio = tf.concat([front, audio, back], 0) # normalize to 0 to 1 range audio = tf.add(audio, tf.abs(tf.reduce_min(audio))) audio = tf.multiply(audio, 1.0/tf.reduce_max(audio)) # [data, channels] => [samples, data, channels] audio = tf.reshape(audio, [-1, int(rate * seconds_per_sample), 2]) return audio tf.reset_default_graph() with tf.Graph().as_default(): # take files one by one and read data from them files = glob.glob('music/*.mp3') queue = tf.train.string_input_producer(files, num_epochs=1) fname = queue.dequeue() audio = load(fname) audio = preprocess(audio) samples = tf.train.slice_input_producer([audio], num_epochs=1) batch = tf.train.batch(samples, 10) model = tf.identity(batch) init = [tf.global_variables_initializer(), tf.local_variables_initializer()] coord = tf.train.Coordinator() with tf.Session() as session: session.run(init) threads = tf.train.start_queue_runners(sess=session, coord=coord) for _ in range(10): try: result = session.run(model) except tf.errors.OutOfRangeError: coord.request_stop() coord.request_stop() coord.join(threads)
这似乎很简单,类似的方法为我以前的模型工作。我重塑了音频数据,所以第一个维度变成样本,使用切片输入将样本排队,然后使用batch()将样本10一次送入模型。为了简单起见,我将模型作为身份函数离开。这段代码使我的python segfault处于tensorflow深处。有什么我明显错误的吗?
这里是OSX崩溃报告的开始
Process: Python [57865] Path: /usr/local/Cellar/python3/3.6.1/Frameworks/Python.framework/Versions/3.6/Resources/Python.app/Contents/MacOS/Python Identifier: Python Version: 3.6.1 (3.6.1) Code Type: X86-64 (Native) Parent Process: Python [57654] Responsible: Python [57865] User ID: 502 Date/Time: 2017-04-12 16:07:13.318 -0400 OS Version: Mac OS X 10.12.3 (16D32) Report Version: 12 Anonymous UUID: B5DE676B-FEC7-9626-B1CC-F392948D410C Sleep/Wake UUID: F3A5360E-B7A0-4675-9DC9-EAEE938E2E70 Time Awake Since Boot: 440000 seconds Time Since Wake: 16000 seconds System Integrity Protection: disabled Crashed Thread: 16 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY Application Specific Information: abort() called
编辑:我在GitHub上打开问题是没有解释关闭,但“看问题跟踪策略”。我不知道我还能在这里做什么。如果有人有任何解决这个问题的方法,请做。
我不认为tensorflow关心二进制,它似乎直接链接到ffmpeg库。但无论哪种方式,如果我在没有所有批处理代码的情况下执行相同的操作,只需使用load()所做的相同操作加载一个文件,然后查看其工作正常的输出。 –