音频降噪

复制import subprocess
import json

# 使用 FFmpeg afftdn 滤波器进行音频降噪
input_file = "noisy.wav"
output_file = "denoised.wav"

# 基础 afftdn 参数：nr=降噪强度(dB)，nt=噪声类型(w=白噪声)
cmd = [
    "ffmpeg", "-i", input_file,
    "-af", "afftdn=nr=20:nt=w",
    "-y", output_file
]

result = subprocess.run(cmd, capture_output=True, text=True)
if result.returncode != 0:
    print("FFmpeg 错误:", result.stderr)
else:
    print(f"降噪完成: {output_file}")

复制package main

import (
	"fmt"
	"os/exec"
)

func main() {
	input := "noisy.wav"
	output := "denoised.wav"

	// 调用系统 FFmpeg 执行 afftdn 降噪
	cmd := exec.Command("ffmpeg",
		"-i", input,
		"-af", "afftdn=nr=20:nt=w",
		"-y", output)

	if err := cmd.Run(); err != nil {
		fmt.Printf("降噪失败: %v\n", err)
		return
	}
	fmt.Printf("输出文件: %s\n", output)
}

复制const { execSync } = require('child_process');
const path = require('path');

// 通过 Node.js 调用 FFmpeg 进行 afftdn 降噪
const input = 'noisy.wav';
const output = 'denoised.wav';

const cmd = `ffmpeg -i ${input} -af "afftdn=nr=20:nt=w" -y ${output}`;

try {
  execSync(cmd, { stdio: 'pipe' });
  console.log(`降噪完成: ${output}`);
} catch (err) {
  console.error('FFmpeg 错误:', err.stderr.toString());
}