java 如何把多个音频合成一个

雨后浅浅唱2023-11-02 19:14
java 复制代码
    public static void main(String[] args) {
        File file1 = new File("D:\\配音\\LOL稳健4.mp3");
        File file2 = new File("D:\\配音\\LOL稳健4-2.mp3");
        File file3 = new File("D:\\配音\\LOL稳健444.mp3");

        // 创建要合并的音频文件对象列表
        List<File> sourceFiles = new ArrayList<>();
        sourceFiles.add(file1);
        sourceFiles.add(file2);

        mergeAudioFiles(sourceFiles, file3);
    }

    private static void mergeAudioFiles(List<File> audioFiles, File outputFile) {
        try {
            long totalLength = 0;
            AudioFormat audioFormat = null;
            AudioInputStream audioInputStream = null;
            List<AudioInputStream> audioInputStreams = new ArrayList<>();

            // 读取每个音频文件，获取其音频格式和音频流
            for (File audioFile : audioFiles) {
                audioInputStream = AudioSystem.getAudioInputStream(audioFile);
                totalLength += audioInputStream.getFrameLength();
                audioFormat = audioInputStream.getFormat();
                audioInputStreams.add(audioInputStream);
            }

            // 创建新的音频格式和流
            boolean isSigned = audioFormat.getEncoding() == AudioFormat.Encoding.PCM_SIGNED;
            AudioFormat newAudioFormat = new AudioFormat(audioFormat.getSampleRate(),
                audioFormat.getSampleSizeInBits(),
                audioFormat.getChannels(),
                isSigned,
                audioFormat.isBigEndian());
            AudioInputStream mergedAudioStream = new AudioInputStream(
                new SequenceInputStream(Collections.enumeration(audioInputStreams)),
                newAudioFormat,
                totalLength
            );

            // 写入合并后的音频流到输出文件
            AudioSystem.write(mergedAudioStream, AudioFileFormat.Type.WAVE, outputFile);

            // 关闭所有音频流
            for (AudioInputStream ais : audioInputStreams) {
                ais.close();
            }

            mergedAudioStream.close();
        } catch (UnsupportedAudioFileException | IOException e) {
            e.printStackTrace();
        }
    }