Pitch Shift, Transpose Key & Speed Control for YouTube – KeyPitch

About

Pitch Shift, Transpose key, control playback speed (tempo), create precise loops, add reverb, enable spatial 8D audio, and freely organize your workspace.

That’s exactly what KeyPitch delivers: an audio tool designed specifically for YouTube and YouTube Music.

KeyPitch is a next-generation audio tool built for anyone who listens to, practices, performs, or creates music on YouTube and YouTube Music.

Whether you are a singer, musician, producer, or karaoke enthusiast, KeyPitch turns your browser into a real-time digital audio workstation (DAW).  


🚀 Core Features

1. Key Transposition (“Transpose” – international term)

Change the key of a track without altering its tempo.

	•	Semitone adjustment: from -12 to +12.  
	•	Ideal for: Adapting a song to your vocal range or playing in a different key without changing chord shapes.


2. Precise Pitch Control (Hz) (“Pitch Shift” – international term)

Unlike classic transposition, pitch adjustment is fine-grained and continuous.

	•	Surgical precision: Adjust frequency from 415.3 Hz to 466.2 Hz (around the standard 440 Hz tuning).  
	•	Ideal for: Microtonal tuning, pitch correction, or matching slightly detuned recordings.


3. Tempo Control (Time Stretching)

Speed up or slow down playback from 0.25× to 4.00× without affecting pitch.

	•	Total smoothness: High-quality algorithm with no audible artifacts.  
	•	Ideal for: Analyzing complex solos or progressively practicing fast passages.


4. Immersion: Reverb & 8D Audio

	•	Reverb (0–100%): Recreate the acoustics of a concert hall or studio to add depth and warmth to a “dry” sound.  

	•	8D Spatial Mode: Create dynamic rotational movement. The sound feels like it’s moving around your head (best experienced with headphones).


5. Precision Looping

Define point A and point B with millisecond accuracy.

	•	Modes: Infinite loop or single loop.  
	•	Use case: Repeat a difficult section until it’s perfectly mastered.


🎨 A Unique Modular Interface

Unlike traditional extensions, KeyPitch offers a fully customizable workspace:

	•	Drag & Drop: Freely rearrange each module (Pitch, Tempo, Reverb, etc.) to match your workflow.  
	•	Automatic memory: The interface remembers your preferred layout.  
	•	Modern design: Dark glassmorphism look, elegant and optimized to reduce eye strain during studio sessions or late-night use.


🎹 Who is KeyPitch for?

	•	🎤 Singers: Transpose any song to your ideal key.  
	•	🎸 Musicians: Slow down guitar solos or piano lines to transcribe them by ear.  
	•	🎧 DJs & Producers: Experiment with live remixing and ambient effects directly on YouTube and YouTube Music.  
	•	🎼 Students & Teachers: A powerful educational tool for ear training.


🔒 Technology & Privacy

	•	Professional-grade quality: Ultra-low-latency DSP (Digital Signal Processing) engine for smooth real-time processing.  
	•	100% Local: All audio processing happens directly in your browser.  
	•	Privacy-first: No data collection, no account required, no cookies.

KeyPitch turns YouTube into a true sonic laboratory.  
Music becomes more precise, more immersive, and entirely yours.