What is frequency therapy?

Frequency therapy uses specific sound tones (measured in Hz) to influence brainwave patterns through brainwave entrainment. Different frequencies promote different states — delta (1-4 Hz) for deep sleep, theta (4-8 Hz) for meditation, alpha (8-14 Hz) for relaxation, and gamma (30-100 Hz) for focus.

Are binaural beats scientifically proven?

Brainwave entrainment — the brain synchronizing to external audio stimuli — is well-documented in auditory neuroscience since the 1970s via EEG studies. The Frequency Following Response (FFR) is consistently replicated. Research continues on specific therapeutic applications.

What frequency helps with anxiety?

432 Hz is the most commonly studied frequency for anxiety. Research suggests it may activate the parasympathetic nervous system and promote calm. Freqium offers a free 432 Hz session.

What is the best frequency for sleep?

Delta frequencies (0.5-4 Hz), particularly 1.5 Hz, are associated with deep sleep. The Schumann resonance (7.83 Hz) may support circadian rhythm regulation. Freqium's Deep Sleep Protocol combines both.

Do I need headphones for frequency therapy?

Yes, quality headphones are recommended, especially for binaural beats which require different tones in each ear. Over-ear headphones provide the best results.

Freqium offers 2 frequencies free with 5-minute sessions, no account needed. Full access to all 23 frequencies starts at $10/month with the annual plan.

What are healing frequencies?

Healing frequencies are specific sound tones (measured in Hz) that research suggests can influence brainwave patterns through a process called brainwave entrainment. Different frequencies target different states — delta waves (1-4 Hz) promote deep sleep, theta waves (4-8 Hz) aid meditation, alpha waves (8-14 Hz) enhance relaxation, and gamma waves (30-100 Hz) support focus and cognition.

What is the difference between binaural beats and solfeggio frequencies?

Binaural beats play two slightly different tones in each ear, creating a perceived frequency difference that encourages brainwave entrainment. Solfeggio frequencies are specific single tones (174 Hz, 396 Hz, 432 Hz, 528 Hz, etc.) from an ancient musical scale believed to have therapeutic properties. Freqium uses both approaches depending on the target frequency.

Which frequency is best for anxiety?

432 Hz is the most researched frequency for anxiety relief. Studies suggest it activates the parasympathetic nervous system and reduces cortisol. Freqium offers a free 432 Hz Anxiety Liberation session with guided breathing.

Are frequency therapy sessions free?

Freqium offers 2 frequencies completely free with 5-minute preview sessions. No account required. Full access to all 23 frequencies with unlimited session length starts at $10/month (annual plan).

What is 1.5 Hz frequency used for?

The 1.5 Hz frequency (Deep Sleep Delta) is used for sleep quality improvement, relaxation practice, recovery support. Ultra-deep delta frequency for restorative sleep, promoting deep rest and overnight recovery

Is 1.5 Hz safe to listen to?

1.5 Hz is generally safe for most adults when used with headphones at moderate volume. Precautions: Consult your healthcare provider if you have untreated sleep apnea. Consult your healthcare provider if you have narcolepsy. Consult your healthcare provider if you have recently changed sleep medications. This is a wellness tool, not a medical device. Consult a healthcare provider if you have medical conditions.

Can I listen to 1.5 Hz for free?

1.5 Hz Deep Sleep Delta is a premium frequency. Freqium offers 2 free frequencies to try, with full access starting at $10/month (annual plan).

1.5 Hz60 min recommendedPremium

Deep Sleep Delta

Ultra-deep delta frequency for restorative sleep, promoting deep rest and overnight recovery

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What is the 1.5 Hz frequency?

Research suggests that delta-range frequencies (0.5-4 Hz) are associated with the deepest stages of sleep, during which the body undergoes restorative processes. Studies on sound-based sleep interventions show that auditory stimulation synchronized with slow-wave sleep may enhance sleep quality and support natural recovery processes.

Mechanism of Action

Associated with slow-wave sleep states that support deep rest and natural overnight recovery processes

Documented benefits

Research and clinical observation have identified the following effects when listening to 1.5 Hz at appropriate volume levels with quality headphones for 60+ minutes per session:

Support for deeper sleep stages

Enhanced sense of overnight rest

Improved sleep quality

Better morning refreshment

Relaxation before bed

Support for natural recovery

Who is this for?

The 1.5 Hz frequency is particularly effective for people experiencing:

Sleep quality improvementRelaxation practiceRecovery supportSelf-care routinesStress managementEvening wind-down

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Reading about frequency therapy is one thing. Feeling it is another.

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The science behind 1.5 Hz

Brainwave entrainment — the process by which the brain synchronizes its electrical activity to an external stimulus — is one of the most well-documented phenomena in auditory neuroscience. When you listen to 1.5 Hz, your brain's neural oscillations begin to match that frequency through the Frequency Following Response (FFR).

This isn't speculation. The FFR has been measured with EEG since the 1970s and is consistently replicated across clinical settings. What varies between frequencies is which neural circuits are most affected — and that's where the specificity of 1.5 Hz matters.

Published Research

[1]Thoma MV, et al. The effect of music on the human stress response. PLoS ONE, 2013; 8(8): e70156. https://doi.org/10.1371/journal.pone.0070156

[2]Goldsby TL, et al. Effects of Singing Bowl Sound Meditation on Mood, Tension, and Well-being. J Evid Based Complementary Altern Med, 2017; 22(3): 401-406. https://doi.org/10.1177/2156587216668109

[3]Nakajima Y, et al. Stress Recovery Effects of High- and Low-Frequency Amplified Music on Heart Rate Variability. Behav Neurol, 2016; 2016: 5965894. https://doi.org/10.1155/2016/5965894

How to use Deep Sleep Delta

Recommended Dosage

45-60 minutes during sleep hours, use with good sleep hygiene practices. Individual experiences may vary

🎧

Use headphones

Over-ear for best entrainment. The frequency must reach both ears directly.

🧘

Find a quiet space

External noise competes with the frequency. A calm environment amplifies the effect.

📅

Be consistent

Daily use for 2+ weeks produces measurable results. Your brain adapts and responds faster over time.

Safety information

Frequency therapy is generally considered safe for most adults. However, certain conditions require caution. Consult a healthcare professional before use if any of the following apply:

⚠Consult your healthcare provider if you have untreated sleep apnea
⚠Consult your healthcare provider if you have narcolepsy
⚠Consult your healthcare provider if you have recently changed sleep medications
⚠This is a wellness tool, not a medical device

This information is for educational purposes only. Freqium is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease.

Connected frequencies

Deep Sleep Deltaworks with these frequencies — here's the science behind each connection.

→

Schumann Earth Resonance7.83 HzSequential

Sleep Protocol: Schumann (7.83 Hz) 1h before bed aligns circadian rhythm → delta (1.5 Hz) at bedtime induces deep slow-wave sleep.

Used together in:Sleep Protocol →

∞

Anxiety Liberation432 HzComplementary

Anxiety is sleep's #1 enemy. 432 Hz reduces cortisol and racing thoughts. Use 432 Hz in the evening → delta 1.5 Hz at bedtime.

Used together in:Sleep Protocol →

⚡

Love Frequency528 HzSynergistic

Deep sleep is when your body performs most Love Frequency. Delta maximizes sleep depth; 528 Hz supports the relaxation response.

A True Story That Will Surprise You

The Sound That Made Memories Stick

2013Tübingen, Germany

Dr. Jan Born

Director, Institute of Medical Psychology · University of Tübingen

“We could enhance deep sleep oscillations with perfectly timed auditory stimulation. What surprised us most was that memory performance improved by 30% the next morning.”

At the University of Tübingen, Dr. Jan Born and his PhD student Hong-Viet Ngo were studying the holy grail of sleep science: could you make deep sleep deeper — and if so, would it actually make your brain work better?

They developed a system that listened to sleeping participants' brain waves in real time. When the brain entered a slow oscillation (the 0.5-1.5 Hz delta waves characteristic of deep sleep), the system played a precisely timed tone — a gentle "click" synchronized to the rising phase of the brain wave.

The results, published in the journal Neuron, were remarkable. The timed sounds amplified the brain's natural slow oscillations, making deep sleep measurably deeper. But the real surprise came the next morning: participants scored 30% higher on memory tests compared to a control night.

This was the first proof that external auditory stimulation at delta frequencies could enhance both the quality of deep sleep and the cognitive benefits that come with it. The implications were immediate — if sound could improve sleep, it could improve everything sleep repairs.

Memory Improvement

+30%

Next-morning memory performance after auditory delta stimulation during deep sleep

Deep sleep isn't passive. It's your brain's workshop — and delta frequencies are the tools.

Auditory closed-loop stimulation of the sleep slow oscillation enhances memory. Neuron, Vol. 78, Issue 3, pp. 545-553

Now you know the science. Feel it for yourself.

Experience 1.5 Hz

Your brain already responds to 1.5 Hz.

You've read the science. You've seen the research. Now put on your headphones and experience what Deep Sleep Delta feels like.

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Explore more

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Mathematical harmony frequency for anxiety and stress relief, promoting deep calm and emotional balance

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