High-quality input audio is essential for high-fidelity voice cloning.
Devices
Use smartphones, digital voice recorders, or professional audio recorders.
Environment
Location
Record in a small, enclosed space no larger than 10 square meters.
Choose a room with sound-absorbing materials, such as acoustic foam, carpets, or curtains.
Avoid large, open areas—such as auditoriums, conference rooms, or classrooms—because they cause strong reverberation.
Noise control
Outdoor noise: Close windows and doors, and avoid traffic or construction noise.
Indoor noise: Turn off air conditioners, fans, and fluorescent lamp ballasts. Record ambient sound using your smartphone, then play it back at high volume to identify hidden noise sources.
Reverberation control
Reverberation blurs speech and reduces definition.
Reduce reflections from smooth surfaces by drawing curtains, opening closet doors, or covering desks and cabinets with clothing or bed sheets.
Use irregular objects—such as bookshelves or upholstered furniture—to scatter sound waves.
Script
No strict content restrictions apply. Align the script with your target application scenario.
Avoid short phrases—such as “Hello” or “Yes”—and use complete sentences instead.
Maintain semantic continuity. Pause infrequently while reading aloud, and aim for at least three seconds of uninterrupted speech.
Add appropriate emotional expression—such as warmth, friendliness, or seriousness—to avoid robotic delivery.
Do not include sensitive words—such as those related to politics, pornography, or violence—because cloning will fail.
Best practices
For example, in a standard bedroom:
Close windows and doors to block external noise.
Turn off air conditioners, fans, and other electrical devices.
Draw curtains to reduce glass reflections.
Cover your desk with clothing or a blanket to reduce surface reflections.
Familiarize yourself with the script. Define your character’s tone and deliver naturally.
Position the recording device about 10 cm from your mouth to avoid plosive distortion and weak signal.