# 🎧 YouTube Pro Audio Enhancer
one for **YouTube player**Advanced audio enhancement scripts created by，based on **Web Audio API**，Can enhance the low-frequency intensity of video with one click、Vocal clarity and overall loudness，Let ordinary videos have a more professional listening experience。
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## ✨ Features
- 🔊 **Low frequency enhancement（Sub Bass）**
use Low Shelf Filter enhancement approx. 60Hz low frequency，Give music a deeper sense of depth。
- 🧹 **Turbid band reduction（Mud Cut）**
exist 250Hz Make cuts nearby，Reduce feeling of stuffiness，Make the sound cleaner。
- 🎤 **Improved vocal clarity（Presence）**
promote 2.5kHz sense of presence，Make vocals stand out more、clearer。
- ✨ **High frequency brightness enhancement（Brilliance）**
Enhance 8kHz High frequency above，Make the overall listening experience more transparent。
- 📈 **dynamic compression（Compressor）**
Balance volume dynamics，Reduce big and small problems，More stable hearing。
- 🔉 **overall gain increase（Gain）**
Without obvious distortion，Moderately increase overall volume。
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## 🖱 Usage
- exist YouTube A new one will be added in the lower left corner of the player **🎵 audio boost button**
- Just click the button **turn on / Turn off audio enhancement**
- The button turns blue to indicate that enhancements are enabled for the current video
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## 💾 state memory
- The script will automatically record your switch status（`localStorage`）
- After refreshing the page or switching videos，Will automatically restore the last open state
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## 🔧 Technical implementation
- use `AudioContext` Create an audio processing environment
- pass `createMediaElementSource()` take over `
