Isochronic Tones Downloads

32 free isochronic tone audio files categorized by brainwave band.

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Jellyfish reading a book with headphones

Delta Waves (0.5 – 3.5 Hz)

Associated with deep sleep and restorative rest.

Deep Delta 0.5 Hz 0.5 Hz

Delta 1.0 Hz 1 Hz

Delta 1.5 Hz 1.5 Hz

Delta 2.0 Hz 2 Hz

Delta 2.5 Hz 2.5 Hz

Delta 3.0 Hz 3 Hz

Upper Delta 3.5 Hz 3.5 Hz

Theta Waves (4.0 – 7.5 Hz)

Associated with deep relaxation, meditation, and REM sleep states.

Deep Theta 4.0 Hz 4 Hz

Theta 4.5 Hz 4.5 Hz

Theta 5.0 Hz 5 Hz

Theta 5.5 Hz 5.5 Hz

Theta 6.0 Hz 6 Hz

Theta 6.5 Hz 6.5 Hz

Theta 7.0 Hz 7 Hz

Upper Theta 7.5 Hz 7.5 Hz

Alpha Waves (8.0 – 13.0 Hz)

Associated with relaxed alertness, light meditation, and mental calm.

Alpha 8.0 Hz 8 Hz

Alpha 8.5 Hz 8.5 Hz

Alpha 9.0 Hz 9 Hz

Alpha 10.0 Hz 10 Hz

Alpha 11.0 Hz 11 Hz

Alpha 12.0 Hz 12 Hz

Upper Alpha 13.0 Hz 13 Hz

Beta Waves (14.0 – 30.0 Hz)

Associated with active thinking, focus, and cognitive engagement.

Low Beta 14.0 Hz 14 Hz

Beta 15.0 Hz 15 Hz

Mid Beta 18.0 Hz 18 Hz

Beta 20.0 Hz 20 Hz

High Beta 24.0 Hz 24 Hz

High Beta 30.0 Hz 30 Hz

Gamma Waves (35.0 – 50.0 Hz)

Associated with high-level cognitive processing and peak mental alertness.

Gamma 35.0 Hz 35 Hz

Gamma 40.0 Hz 40 Hz

Gamma 45.0 Hz 45 Hz

High Gamma 50.0 Hz 50 Hz

Custom Isochronic Generator

Carrier (Hz)

220

Pulse (Hz)

10

Duration (min)

10

Duty (%)

50

Output Level (%)

80

Edge Softness (% of period/side)

18

Waveform

Sine
Triangle
48 kHz · 16-bit PCM WAV · Stereo (L=R)

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FAQ for Isochronic Tones

Why are these smoother than typical isochronics?

Each beat uses cosine-ramped trapezoids sized to the period, avoiding hard edges. The file has a short attack and release to remove start/stop pops.

Does the softness change the beat rate?

No. The pulse frequency stays exact. Only the edge shape changes, similar to a triangle LFO plus offset in a live graph.

Can I make it snappier?

Yes. Reduce the Edge Softness slider or raise duty.

Mono or stereo?

Downloads are stereo with identical channels to maximize player compatibility.

Why 48 kHz and 16-bit PCM?

48 kHz matches common WebAudio/video workflows and avoids extra resampling in many players. 16-bit PCM is widely supported and keeps files small without added codec artifacts.

How do you avoid clicks at very low pulse rates?

Ramp time scales with the beat period and clamps to a sane min/max. That preserves a real plateau while keeping edges gentle, even at 0.5-2 Hz.

Why offer triangle as a carrier?

Triangle adds upper harmonics compared with sine, which can make the gating feel more pronounced at the same level. Sine is cleaner and softer.

Levels and headroom?

The generator multiplies a normalized carrier by the envelope and gain. No limiter is applied. Keep Output Level below 100% if you stack files later.

Why not export MP3/Opus?

Lossy encoders can smear fast on/off edges. WAV preserves exact timing. You can transcode after export if needed.

Commercial use?

Files are synthesized locally from pure tones and envelopes. You control the output. Check your local regulations if you distribute health-related audio.

More tools to help you

Isochronic Tones — Free Online Downloads

Generate clean, click-free isochronic tones in your browser. Smooth cosine-ramped envelopes, global fade-in/out, and 48 kHz 16-bit WAV export. Zero uploads, zero accounts.

isochronic tones download
isochronic tone generator
isochronic beats WAV
free isochronic audio
48 kHz 16-bit
client-side rendering
no login
offline ready
smooth envelopes
Why this tool

• Client-side synthesis (privacy-first)

• Cosine-ramped gating (no clicks)

• Stereo L=R WAV, DAW-ready

Specs

• 48 kHz · 16-bit PCM

• Adjustable duty & edge softness

• Sine or triangle carrier