python - 如何从 python 将 wav 转换为 flac？

Question

我刚刚开始使用 Python，并且正在使用PyAudioandWave模块从麦克风中获取声音并将其转换为.wav文件。

我现在要做的是将其转换.wav为.flac. 我已经看到了一些方法来做到这一点，它们都涉及安装转换器并将其放置在我的环境 PATH 中并通过os.system.

还有其他方法可以通过 Python将 a 转换.wav为 a吗？.flac我正在寻找的解决方案需要在 Windows 和 Linux 上运行。

Answer 1

我没有测试过这个解决方案，但你可以使用pydub

    from pydub import AudioSegment
    song = AudioSegment.from_wav("test.wav")
    song.export("testme.flac",format = "flac")

多种文件格式支持转换（请参阅此处的 ffmpeg 支持的文件格式列表https://ffmpeg.org/general.html#Audio-Codecs

Answer 2

下面是一个使用 Python 库Python Audio Tools将文件转换为.wav文件的代码示例.flac：

import audiotools
filepath_wav = 'music.wav'
filepath_flac = filepath_wav.replace(".wav", ".flac")
audiotools.open(filepath_wav).convert(filepath_flac,
                                      audiotools.FlacAudio, compression_quality)

安装 Python 音频工具：http ://audiotools.sourceforge.net/install.html

https://wiki.python.org/moin/Audio/ ( mirror ) 尝试列出所有有用的 Python 库，以便与 Python 结合使用音频。

---

一个较长的 Python 脚本，用于多线程将 wav 文件批量转换为 FLAC 文件，来自http://magento4newbies.blogspot.com/2014/11/converting-wav-files-to-flac-with.html

from Queue import Queue
import logging
import os
from threading import Thread
import audiotools
from audiotools.wav import InvalidWave

"""
Wave 2 Flac converter script
using audiotools
From http://magento4newbies.blogspot.com/2014/11/converting-wav-files-to-flac-with.html
"""
class W2F:

    logger = ''

    def __init__(self):
        global logger
        # create logger
        logger = logging.getLogger(__name__)
        logger.setLevel(logging.DEBUG)

        # create a file handler
        handler = logging.FileHandler('converter.log')
        handler.setLevel(logging.INFO)

        # create a logging format
        formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
        handler.setFormatter(formatter)

        # add the handlers to the logger
        logger.addHandler(handler)

    def convert(self):
        global logger
        file_queue = Queue()
        num_converter_threads = 5

        # collect files to be converted
        for root, dirs, files in os.walk("/Volumes/music"):

            for file in files:
                if file.endswith(".wav"):
                    file_wav = os.path.join(root, file)
                    file_flac = file_wav.replace(".wav", ".flac")

                    if (os.path.exists(file_flac)):
                        logger.debug(''.join(["File ",file_flac, " already exists."]))
                    else:
                        file_queue.put(file_wav)

        logger.info("Start converting:  %s files", str(file_queue.qsize()))

        # Set up some threads to convert files
        for i in range(num_converter_threads):
            worker = Thread(target=self.process, args=(file_queue,))
            worker.setDaemon(True)
            worker.start()

        file_queue.join()

    def process(self, q):
        """This is the worker thread function.
        It processes files in the queue one after
        another.  These daemon threads go into an
        infinite loop, and only exit when
        the main thread ends.
        """
        while True:
            global logger
            compression_quality = '0' #min compression
            file_wav = q.get()
            file_flac = file_wav.replace(".wav", ".flac")

            try:
                audiotools.open(file_wav).convert(file_flac,audiotools.FlacAudio, compression_quality)
                logger.info(''.join(["Converted ", file_wav, " to: ", file_flac]))
                q.task_done()
            except InvalidWave:
                logger.error(''.join(["Failed to open file ", file_wav, " to: ", file_flac," failed."]), exc_info=True)
            except Exception, e:
                logger.error('ExFailed to open file', exc_info=True)

Answer 3

可能您正在寻找Python 音频工具。

看来 PAT 可以为所欲为。