Isochronic Tones Downloads — Free & Online

Clean, click-free isochronic tones rendered locally in your browser with soft edges and global fade-in/out. Pick a preset or build your own 48 kHz WAV.

Ready-Made Presets

48 kHz WAV

Focus 12 Hz

Focus

Carrier 220 Hz · Pulse 12 Hz · 10 min · sine

Smooth trapezoid pulses · cosine ramps · global fade-in/out

Study 14 Hz

Focus

Carrier 440 Hz · Pulse 14 Hz · 15 min · sine

Smooth trapezoid pulses · cosine ramps · global fade-in/out

Calm 8 Hz

Calm

Carrier 396 Hz · Pulse 8 Hz · 12 min · triangle

Smooth trapezoid pulses · cosine ramps · global fade-in/out

Wind-Down 6 Hz

Calm

Carrier 174 Hz · Pulse 6 Hz · 20 min · sine

Smooth trapezoid pulses · cosine ramps · global fade-in/out

Rest 4 Hz

Rest

Carrier 150 Hz · Pulse 4 Hz · 25 min · sine

Smooth trapezoid pulses · cosine ramps · global fade-in/out

Power Nap 10 Hz

Quick

Carrier 262 Hz · Pulse 10 Hz · 7 min · triangle

Smooth trapezoid pulses · cosine ramps · global fade-in/out

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Custom Builder

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)

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.

Can I change sample rate or bit depth?

Yes, in code. Pass a different sampleRate to the WAV encoder and adjust the header fields; for 24-bit/32-bit float you would also change the sample packing. The UI exports 48 kHz/16-bit for simplicity.

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.

Do you add DC offset?

No. The carrier is centered; amplitude gating does not introduce a fixed DC bias in the exported file.

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.

Seamless looping tips?

Pick a duration that is an integer multiple of the pulse period. That aligns the last envelope edge with the first and minimizes loop clicks.

Why not export MP3/Opus?

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

Left/right differences for spatial effects?

These exports are L=R by design. For spatial effects, render two files with different carriers or envelopes and pan in your DAW.

Global fade length control?

Yes, in code. Adjust globalFadeInMs and globalFadeOutMs in the synth call. Longer releases sound more natural for slow pulses.

Can I stack a noise bed under the tone?

Not in this UI. You can layer a pink/white noise track in your DAW or extend the code to sum a noise buffer before WAV encoding.

Mobile background playback?

Playback behavior depends on the browser/OS. Most mobile browsers pause audio when the tab sleeps unless audio is user-initiated and kept in the foreground.

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.

Safety note

Keep volume moderate and avoid long sessions if you feel discomfort. This is not medical advice.

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
cosine ramps
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