如何将 .wav 文件拆分为多个 .wav 文件? [英] How to split a .wav file into multiple .wav files?

问题描述

我有一个几分钟长的 .wav 文件，我想将其拆分为不同的 10 秒 .wav 文件.

I have a .wav file several minutes long that I would like to split into different 10 second .wav files.

这是我目前的python代码:

This is my python code so far:

import wave
import math

def main(filename, time):
    read = wave.open(filename, 'r')

#get sample rate
    frameRate = read.getframerate()

#get number of frames
    numFrames = read.getnframes()

#get duration
    duration = numFrames/frameRate

#get all frames as a string of bytes
    frames = read.readframes(numFrames)

#get 1 frame as a string of bytes
    oneFrame = read.readframes(1)

#framerate*time == numframesneeded
    numFramesNeeded=frameRate*time

#numFramesNeeded*oneFrame=numBytes
    numBytes = numFramesNeeded*oneFrame

#splice frames to get a list strings each representing a 'time' length
#wav file
    x=0
    wavList=[]
    while x+time<=duration:
        curFrame= frames[x:x+time]
        x=x+time
        wavList.append(curFrame)

打印wavList 产生:

<代码>['x00x00x00x00xffxffx00x00x00x00', 'x00x00x00x00x00x00x00x00x00x00', 'x00x00x00x00x00x00x00x00x00x00', 'x00x00x00x00x00x00x00x00x00x00', 'x00x00x00x00x00x00x00x00x00x00']

我知道这是一个框架列表.如何为该列表中的每个元素制作一个 wav 文件(第一个 .wav 文件将是 'x00x00x00x00xffxffx00x00x00x00'? Python 的 wave 模块不清楚如何使用框架来创建 .wav 文件.

I know that this is a list of frames. How do I make one wav file for each element in this list (the first .wav file would be 'x00x00x00x00xffxffx00x00x00x00'? Python's wave module is unclear about using frames to create .wav files.

这是如何在python中将音频文件(wav格式)拼接成1秒拼接?但是，如果有人有不需要 pydub 的答案，我非常希望看到它.

This is a duplicate question of How to splice an audio file (wav format) into 1 sec splices in python? However, if someone has an answer that does not require pydub I would very much like to see it.

推荐答案

这是一个 Python 代码片段，我根据需要使用它来拆分文件.
我使用 https://github.com/jiaaro/pydub.您可以修改代码段以满足您的要求.

This is a python code snippet that I use for splitting files as per necessity.
I use the pydub library from https://github.com/jiaaro/pydub. You can modify the snippet to suit your requirement.

from pydub import AudioSegment
t1 = t1 * 1000 #Works in milliseconds
t2 = t2 * 1000
newAudio = AudioSegment.from_wav("oldSong.wav")
newAudio = newAudio[t1:t2]
newAudio.export('newSong.wav', format="wav") #Exports to a wav file in the current path.

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