852 Hz Pure Tone (12 Hours) – Black Screen Background for Focus & Meditation

This video contains a continuous 852 Hz pure tone (sine wave) for 12 hours, played over a completely black screen. No music, no melodies, no visuals – just one stable frequency in a minimalist format.

Use it as a neutral background sound for:
Deep focus and study
Meditation or quiet reflection
Sound masking (blocking out distracting noises)
Audio experiments and tuning tests

📌 What you get:

Duration: 12:00:00 (twelve hours)

Audio: single 852 Hz tone, constant level

Video: black screen (no light for night use / OLED screens)

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Disclaimer:
The audio content on this channel is intended for relaxation and entertainment purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. If you are experiencing physical or mental health issues, please consult a qualified healthcare provider.
Do not listen to these frequencies if you have a medical condition that may be affected by sound stimulation (e.g. epilepsy, auditory sensitivity, or neurological disorders). Use responsibly and avoid listening while driving or operating heavy machinery.

🔊 Listening tips:

Start at low volume and adjust to a comfortable level.

Avoid listening at high volume for long periods.

Do not use headphones while driving or operating machinery.

⚠️ Disclaimer:
This audio is not a medical, therapeutic, or psychological treatment and does not claim to cure or prevent any condition. If you have health, hearing, or sleep issues, please consult a qualified professional.

Enjoy the simplicity of a single frequency and a distraction-free black screen.