如何合并两个音频文件并删除它们的重叠

Question

我有两个 mp3 文件，有一些重叠。第一个文件的最后几秒（通常小于 2 秒）始终出现在最后一个文件的前几秒。

如何将两个音频文件合并为一个并消除重叠部分？

1、目前音频文件为mp3。 2、需要一个python库。我知道 FFMPEG 可能有效，但我没有经验。 3、其他编程语言解决方案也可以。

请给我一些关键词，我希望我能完成剩下的工作。

提前谢谢您:)

我尝试询问 ChatGPT 但没有得到答案。

Answer 1

您可以使用

pydub

在 Python 中编写，最好的部分是 Python 具有内置的音频操作功能。

第一

pip install pydub

from pydub import AudioSegment

# Load both MP3 files
audio1 = AudioSegment.from_mp3("file1.mp3")
audio2 = AudioSegment.from_mp3("file2.mp3")

# Define the overlap duration (in milliseconds)
overlap_duration = 2000  # 2 seconds overlap

# Trim the overlap from the second file
audio2_trimmed = audio2[overlap_duration:]  # Remove the first 'overlap_duration' milliseconds

# Combine the two audio files
combined_audio = audio1 + audio2_trimmed

# Export the combined audio to a new MP3 file
combined_audio.export("combined.mp3", format="mp3")

print("MP3 files combined successfully!")

您也可以在 Java 中实现此目的，但您需要额外依赖于

JAVE (Java Audio Video Encoder),

一个常用的音频处理库。 查看他们的 GitHub 链接和 Maven 依赖项

https://github.com/a-schild/jave2

import it.sauronsoftware.jave.AudioAttributes;
import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.EncodingAttributes;
import it.sauronsoftware.jave.MultimediaInfo;

import java.io.File;

public class Mp3Combiner {

    public static void main(String[] args) {
        try {
            File file1 = new File("file1.mp3");
            File file2 = new File("file2.mp3");

            // Determine overlap duration (in milliseconds)
            int overlapDuration = 2000; // 2 seconds overlap

            // Trim the overlapping part from the second file
            File trimmedFile2 = trimMp3(file2, overlapDuration);

            // Combine the two audio files
            File combinedFile = new File("combined.mp3");
            concatenateMp3(file1, trimmedFile2, combinedFile);

            System.out.println("MP3 files combined successfully!");

        } catch (Exception e) {
            // handle exp
        }
    }

    private static File trimMp3(File mp3File, int trimStartMs) throws Exception {
        File trimmedFile = new File("trimmed_file2.mp3");

        Encoder encoder = new Encoder();

        MultimediaInfo info = encoder.getInfo(mp3File);
        long duration = info.getDuration(); // duration in milliseconds

        // Calculate the part to trim (keep only after the overlap)
        long newStart = trimStartMs;
        long newDuration = duration - trimStartMs;

        AudioAttributes audioAttributes = new AudioAttributes();
        audioAttributes.setCodec("libmp3lame");

        EncodingAttributes attributes = new EncodingAttributes();
        attributes.setAudioAttributes(audioAttributes);
        attributes.setOffset((float) newStart / 1000);  // trim start in seconds
        attributes.setDuration((float) newDuration / 1000);  // trim duration in seconds

        // Re-encode the trimmed file
        encoder.encode(mp3File, trimmedFile, attributes);

        return trimmedFile;
    }

    private static void concatenateMp3(File mp3File1, File mp3File2, File outputFile) throws Exception {
        Encoder encoder = new Encoder();

        AudioAttributes audioAttributes = new AudioAttributes();
        audioAttributes.setCodec("libmp3lame");

        EncodingAttributes attributes = new EncodingAttributes();
        attributes.setAudioAttributes(audioAttributes);

        File[] inputFiles = { mp3File1, mp3File2 };

        encoder.encode(inputFiles, outputFile, attributes);
    }
}