Java 工具类实现音频音量提升

目录

• 前言
• maven依赖
• 代码
• 验证一下

前言

本文提供将音频提升音量的java工具类代码，一如既往的实用主义分享。

maven依赖

        <dependency>
            <groupid>cn.hutool</groupid>
            <artifactid>hutool-all</artifactid>
            <version>5.7.15</version>
        </dependency>
        <dependency>
            <groupid>com.google.guava</groupid>
            <artifactid>guava</artifactid>
            <version>31.0.1-jre</version>
        </dependency>
        <dependency>
            <groupid>org.bytedeco</groupid>
            <artifactid>javacv-platform</artifactid>
            <version>1.5.5</version>
        </dependency>

代码

不废话，上代码。

package com.huyi.csdn.tools;
 
import cn.hutool.core.util.idutil;
import com.google.common.base.joiner;
import com.google.common.base.splitter;
import org.bytedeco.javacpp.loader;
 
import java.io.file;
import java.text.messageformat;
import java.util.arrays;
import java.util.list;
 
/**
 * @program: csdn @classname: raisevolumeutil @author: 剑客阿良_aliang @date: 2021-11-25 00:42 @description:
 * 提升音量工具 @version: v1.0
 */
public class raisevolumeutil {
  /**
   * 通过倍率提升音量
   *
   * @param audiopath 音频地址
   * @param outputdir 输出目录
   * @return 图片地址
   * @throws exception 异常
   */
  public static string raisebyratio(string audiopath, string outputdir, float ratio)
      throws exception {
    list<string> paths = splitter.on(".").splittolist(audiopath);
    string ext = paths.get(paths.size() - 1);
    if (!arrays.aslist("wav", "mp3").contains(ext)) {
      throw new exception("format error");
    }
    string resultpath =
        joiner.on(file.separator).join(arrays.aslist(outputdir, idutil.simpleuuid() + "." + ext));
    string ffmpeg = loader.load(org.bytedeco.ffmpeg.ffmpeg.class);
    processbuilder builder =
        new processbuilder(
            ffmpeg,
            "-i",
            audiopath,
            "-filter:a",
            messageformat.format("volume={0}", string.valueof(ratio)),
            resultpath);
    builder.inheritio().start().waitfor();
    return resultpath;
  }
 
  /**
   * 通过分贝提升音量
   *
   * @param audiopath 音频地址
   * @param outputdir 输出目录
   * @return 图片地址
   * @throws exception 异常
   */
  public static string raisebydecibel(string audiopath, string outputdir, int decibel)
      throws exception {
    list<string> paths = splitter.on(".").splittolist(audiopath);
    string ext = paths.get(paths.size() - 1);
    if (!arrays.aslist("wav", "mp3").contains(ext)) {
      throw new exception("format error");
    }
    string resultpath =
        joiner.on(file.separator).join(arrays.aslist(outputdir, idutil.simpleuuid() + "." + ext));
    string ffmpeg = loader.load(org.bytedeco.ffmpeg.ffmpeg.class);
    processbuilder builder =
        new processbuilder(
            ffmpeg,
            "-i",
            audiopath,
            "-filter:a",
            messageformat.format("volume={0}db", string.valueof(decibel)),
            resultpath);
    builder.inheritio().start().waitfor();
    return resultpath;
  }
 
}

代码说明

1、raisebyratio和raisebydecibel两个方法分别是按照音量倍率提升和按照分贝数提升音频，参数均为音频地址、输出目录、倍率（分贝数）。

2、倍率参数为浮点型，分贝参数为int类型。

3、音频后缀校验只有两种，如需添加，可以自行添加。

4、文件名避免重复使用uuid。

验证一下

提供一个查看音频分辨率的命令，命令如下：

ffmpeg -i c:\users\yi\desktop\660952057553105332.wav -filter_complex volumedetect -c:v copy -f null c:\users\yi\desktop\1.txt

原始音频音量

验证代码

  public static void main(string[] args) throws exception {
    system.out.println(
        raisebyratio("c:/users/yi/desktop/660952057553105332.wav", "c:/users/yi/desktop/", 2.5f));
    system.out.println(
        raisebydecibel("c:/users/yi/desktop/660952057553105332.wav", "c:/users/yi/desktop/", 30));
  }

执行结果

e:\java\jdk1.8.0_40\bin\java.exe "-javaagent:e:\program files\jetbrains\intellij idea 2020.1.1\lib\idea_rt.jar=11349:e:\program files\jetbrains\intellij idea 2020.1.1\bin" -dfile.encoding=utf-8 -classpath 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com.huyi.csdn.tools.raisevolumeutil
ffmpeg version 4.3.2 copyright (c) 2000-2021 the ffmpeg developers
  built with gcc 10.2.0 (rev5, built by msys2 project)
  configuration: --prefix=.. --disable-iconv --disable-opencl --disable-sdl2 --disable-bzlib --disable-lzma --disable-linux-perf --enable-shared --enable-version3 --enable-runtime-cpudetect --enable-zlib --enable-libmp3lame --enable-libspeex --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-openssl --enable-libopenh264 --enable-libvpx --enable-libfreetype --enable-libopus --enable-cuda --enable-cuvid --enable-nvenc --enable-libmfx --enable-w32threads --enable-indev=dshow --target-os=mingw32 --cc='gcc -m64' --extra-cflags=-i../include/ --extra-ldflags=-l../lib/ --extra-libs='-static-libgcc -static-libstdc++ -wl,-bstatic -lstdc++ -lgcc_eh -lws2_32 -lcrypt32 -lpthread -lz -lm -wl,-bdynamic -lole32 -luuid'
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
guessed channel layout for input stream #0.0 : mono
input #0, wav, from 'c:/users/yi/desktop/660952057553105332.wav':
  duration: 00:00:12.58, bitrate: 256 kb/s
    stream #0:0: audio: pcm_s16le ([1][0][0][0] / 0x0001), 16000 hz, mono, s16, 256 kb/s
stream mapping:
  stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_s16le (native))
press [q] to stop, [?] for help
output #0, wav, to 'c:/users/yi/desktop/\398afa61f6614e0086400fbc2197f0d2.wav':
  metadata:
    isft            : lavf58.45.100
    stream #0:0: audio: pcm_s16le ([1][0][0][0] / 0x0001), 16000 hz, mono, s16, 256 kb/s
    metadata:
      encoder         : lavc58.91.100 pcm_s16le
size=     393kb time=00:00:12.58 bitrate= 256.0kbits/s speed=4.27e+03x    
video:0kb audio:393kb subtitle:0kb other streams:0kb global headers:0kb muxing overhead: 0.019373%
c:/users/yi/desktop/\398afa61f6614e0086400fbc2197f0d2.wav
ffmpeg version 4.3.2 copyright (c) 2000-2021 the ffmpeg developers
  built with gcc 10.2.0 (rev5, built by msys2 project)
  configuration: --prefix=.. --disable-iconv --disable-opencl --disable-sdl2 --disable-bzlib --disable-lzma --disable-linux-perf --enable-shared --enable-version3 --enable-runtime-cpudetect --enable-zlib --enable-libmp3lame --enable-libspeex --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-openssl --enable-libopenh264 --enable-libvpx --enable-libfreetype --enable-libopus --enable-cuda --enable-cuvid --enable-nvenc --enable-libmfx --enable-w32threads --enable-indev=dshow --target-os=mingw32 --cc='gcc -m64' --extra-cflags=-i../include/ --extra-ldflags=-l../lib/ --extra-libs='-static-libgcc -static-libstdc++ -wl,-bstatic -lstdc++ -lgcc_eh -lws2_32 -lcrypt32 -lpthread -lz -lm -wl,-bdynamic -lole32 -luuid'
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
guessed channel layout for input stream #0.0 : mono
input #0, wav, from 'c:/users/yi/desktop/660952057553105332.wav':
  duration: 00:00:12.58, bitrate: 256 kb/s
    stream #0:0: audio: pcm_s16le ([1][0][0][0] / 0x0001), 16000 hz, mono, s16, 256 kb/s
stream mapping:
  stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_s16le (native))
press [q] to stop, [?] for help
output #0, wav, to 'c:/users/yi/desktop/\97d5a2518af44b528f59c45e90f39a2a.wav':
  metadata:
    isft            : lavf58.45.100
    stream #0:0: audio: pcm_s16le ([1][0][0][0] / 0x0001), 16000 hz, mono, s16, 256 kb/s
    metadata:
      encoder         : lavc58.91.100 pcm_s16le
size=     393kb time=00:00:12.58 bitrate= 256.0kbits/s speed=3.06e+03x    
video:0kb audio:393kb subtitle:0kb other streams:0kb global headers:0kb muxing overhead: 0.019373%
c:/users/yi/desktop/\97d5a2518af44b528f59c45e90f39a2a.wav
 
process finished with exit code 0

按照倍率的效果如下

差不多精准

按照分贝数效果

稍微更准一点。

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