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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5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica-platform\1.80.0-1.5.5\leptonica-platform-1.80.0-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-android-arm.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-android-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-android-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-android-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\leptonica\1.80.0-1.5.5\leptonica-1.80.0-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract-platform\4.1.1-1.5.5\tesseract-platform-4.1.1-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-android-arm.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-android-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-android-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-android-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\tesseract\4.1.1-1.5.5\tesseract-4.1.1-1.5.5-windows-x86_64.jar 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。
总结
没啥好总结的。
分享：
看到过太多的游子，说起故乡，总会泪光盈盈。仿佛每个人的生命里，都有一座山或一条河，都有一张微笑着的脸庞，都有一个值得潸然泪下的理由。——《虫师》
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