Java工具类如何实现音频音量提升

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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; public class RaiseVolumeUtil {    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;  }     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

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）。

倍率参数为浮点型，分贝参数为int类型。

音频后缀校验只有两种，如需添加，可以自行添加。

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 E:\Java\jdk1.8.0_40\jre\lib\charsets.jar;E:\Java\jdk1.8.0_40\jre\lib\deploy.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\access-bridge-64.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\cldrdata.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\dnsns.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\jaccess.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\jfxrt.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\localedata.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\nashorn.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\sunec.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\sunjce_provider.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\sunmscapi.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\sunpkcs11.jar;E:\Java\jdk1.8.0_40\jre\lib\ext\zipfs.jar;E:\Java\jdk1.8.0_40\jre\lib\javaws.jar;E:\Java\jdk1.8.0_40\jre\lib\jce.jar;E:\Java\jdk1.8.0_40\jre\lib\jfr.jar;E:\Java\jdk1.8.0_40\jre\lib\jfxswt.jar;E:\Java\jdk1.8.0_40\jre\lib\jsse.jar;E:\Java\jdk1.8.0_40\jre\lib\management-agent.jar;E:\Java\jdk1.8.0_40\jre\lib\plugin.jar;E:\Java\jdk1.8.0_40\jre\lib\resources.jar;E:\Java\jdk1.8.0_40\jre\lib\rt.jar;C:\Users\yi\IdeaProjects\csdn\target\classes;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.5.6\spring-boot-starter-web-2.5.6.jar;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot-starter\2.5.6\spring-boot-starter-2.5.6.jar;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.5.6\spring-boot-starter-logging-2.5.6.jar;C:\Users\yi\.m2\repository\ch\qos\logback\logback-classic\1.2.6\logback-classic-1.2.6.jar;C:\Users\yi\.m2\repository\ch\qos\logback\logback-core\1.2.6\logback-core-1.2.6.jar;C:\Users\yi\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.14.1\log4j-to-slf4j-2.14.1.jar;C:\Users\yi\.m2\repository\org\apache\logging\log4j\log4j-api\2.14.1\log4j-api-2.14.1.jar;C:\Users\yi\.m2\repository\org\slf4j\jul-to-slf4j\1.7.32\jul-to-slf4j-1.7.32.jar;C:\Users\yi\.m2\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;C:\Users\yi\.m2\repository\org\yaml\snakeyaml\1.28\snakeyaml-1.28.jar;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.5.6\spring-boot-starter-json-2.5.6.jar;C:\Users\yi\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.12.5\jackson-databind-2.12.5.jar;C:\Users\yi\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.12.5\jackson-annotations-2.12.5.jar;C:\Users\yi\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.12.5\jackson-core-2.12.5.jar;C:\Users\yi\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.12.5\jackson-datatype-jdk8-2.12.5.jar;C:\Users\yi\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.12.5\jackson-datatype-jsr310-2.12.5.jar;C:\Users\yi\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.12.5\jackson-module-parameter-names-2.12.5.jar;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.5.6\spring-boot-starter-tomcat-2.5.6.jar;C:\Users\yi\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.54\tomcat-embed-core-9.0.54.jar;C:\Users\yi\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\9.0.54\tomcat-embed-el-9.0.54.jar;C:\Users\yi\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.54\tomcat-embed-websocket-9.0.54.jar;C:\Users\yi\.m2\repository\org\springframework\spring-web\5.3.12\spring-web-5.3.12.jar;C:\Users\yi\.m2\repository\org\springframework\spring-beans\5.3.12\spring-beans-5.3.12.jar;C:\Users\yi\.m2\repository\org\springframework\spring-webmvc\5.3.12\spring-webmvc-5.3.12.jar;C:\Users\yi\.m2\repository\org\springframework\spring-aop\5.3.12\spring-aop-5.3.12.jar;C:\Users\yi\.m2\repository\org\springframework\spring-context\5.3.12\spring-context-5.3.12.jar;C:\Users\yi\.m2\repository\org\springframework\spring-expression\5.3.12\spring-expression-5.3.12.jar;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot-devtools\2.5.6\spring-boot-devtools-2.5.6.jar;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot\2.5.6\spring-boot-2.5.6.jar;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.5.6\spring-boot-autoconfigure-2.5.6.jar;C:\Users\yi\.m2\repository\org\springframework\boot\spring-boot-configuration-processor\2.5.6\spring-boot-configuration-processor-2.5.6.jar;C:\Users\yi\.m2\repository\org\projectlombok\lombok\1.18.22\lombok-1.18.22.jar;C:\Users\yi\.m2\repository\org\slf4j\slf4j-api\1.7.32\slf4j-api-1.7.32.jar;C:\Users\yi\.m2\repository\org\springframework\spring-core\5.3.12\spring-core-5.3.12.jar;C:\Users\yi\.m2\repository\org\springframework\spring-jcl\5.3.12\spring-jcl-5.3.12.jar;C:\Users\yi\.m2\repository\cn\hutool\hutool-all\5.7.15\hutool-all-5.7.15.jar;C:\Users\yi\.m2\repository\com\google\guava\guava\31.0.1-jre\guava-31.0.1-jre.jar;C:\Users\yi\.m2\repository\com\google\gu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nect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect\0.5.7-1.5.5\libfreenect-0.5.7-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2-platform\0.2.0-1.5.5\libfreenect2-platform-0.2.0-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2\0.2.0-1.5.5\libfreenect2-0.2.0-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2\0.2.0-1.5.5\libfreenect2-0.2.0-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2\0.2.0-1.5.5\libfreenect2-0.2.0-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\libfreenect2\0.2.0-1.5.5\libfreenect2-0.2.0-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense-platform\1.12.4-1.5.5\librealsense-platform-1.12.4-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense\1.12.4-1.5.5\librealsense-1.12.4-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2-platform\2.40.0-1.5.5\librealsense2-platform-2.40.0-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\librealsense2\2.40.0-1.5.5\librealsense2-2.40.0-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\videoinput-platform\0.200-1.5.5\videoinput-platform-0.200-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\videoinput\0.200-1.5.5\videoinput-0.200-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\videoinput\0.200-1.5.5\videoinput-0.200-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus-platform\2.3.1-1.5.5\artoolkitplus-platform-2.3.1-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-android-arm.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-android-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-android-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-android-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-armhf.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-linux-ppc64le.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-macosx-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-windows-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\artoolkitplus\2.3.1-1.5.5\artoolkitplus-2.3.1-1.5.5-windows-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark-platform\1.07-1.5.5\flandmark-platform-1.07-1.5.5.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-android-arm.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-android-arm64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-android-x86.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-android-x86_64.jar;C:\Users\yi\.m2\repository\org\bytedeco\flandmark\1.07-1.5.5\flandmark-1.07-1.5.5-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.RaiseVolumeUtilffmpeg 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-libopenh364 --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.  7.100Guessed Channel Layout for Input Stream #0.0 : monoInput #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/sStream mapping:  Stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_s16le (native))Press [q] to stop, [?] for helpOutput #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_s16lesize=     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.wavffmpeg 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-libopenh364 --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.  7.100Guessed Channel Layout for Input Stream #0.0 : monoInput #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/sStream mapping:  Stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_s16le (native))Press [q] to stop, [?] for helpOutput #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_s16lesize=     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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