CHRONOGRADE PRO — Watch Timegrapher

⌚ CHRONOGRADE PRO

ENTERPRISE WATCH TIMEGRAPHER · v2.6.0

IDLE SNR: — — BPH SEP: —

⚠ Microphone Access Required

Microphone permission was denied or this page is not served over HTTPS. The Timegrapher requires mic access to detect tick sounds. Please allow mic access and reload, or run Demo Mode.

⚠ AGC/COMPRESSION DETECTED — Mic automatic gain control may reduce accuracy. Use an external mic or quieter environment for best results.

BPH (Demo Watch)

Beat Error: 0.5 ms

Rate Offset: +5 s/day

Noise Level: 20%

Rate

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seconds / day

avg: —

Beat Error

—

milliseconds

stability: —

—

degrees (estimated)

lift: —°

Beat Rate

—

ms / beat · — BPH

jitter: —

Confidence

—

quality score (0–100)

SNR: —

Signal · Noise · Threshold · Confidence

Signal

Noise

Threshold

Confidence

Sample Rate: — Buffer: — Events/s: — Mode: — Calibrated: No

Interval Timeline (last 30s)

Rate Trend s/day (last 60s)

Beat Error Scatter (last 60s)

🔬 Pro Diagnostics ▼

⊕ Calibration Wizard ▼

Measure Noise Floor

Keep watch away from mic. Measures ambient noise for 2 seconds.

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Measure Tick Level

Hold watch close to mic. Measures tick amplitude for 5 seconds.

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Apply Calibration

Sets thresholds and refractory period. Saved to localStorage.

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? Help & Reference ▼

Rate (s/day)

How fast or slow the watch runs per day. ±0 ideal. Swiss manufacture spec: ±4 s/day. COSC: ±4/-6 s/day.

Beat Error

Asymmetry between tick-tock halves. Under 0.5 ms is excellent. Over 2 ms may indicate banking or pallet issues.

Amplitude

Balance wheel arc. Ideal 250°–310°. Below 200° may indicate mainspring, oil, or pallet issues. Browser-estimated only.

Tick Profiles

Sharp: high-freq modern ebauche. Balanced: general use. Soft: vintage or pocket watch movements.

T/T Separation

Auto mode clusters intervals to find tick/tock phases. Force Alternate assumes strict alternation. Single Stream disables beat error.

Confidence Score

Composite of SNR, outlier rate, separation reliability, and jitter. Below 50: results unreliable. Above 80: professional grade.

Lift Angle

Escapement geometry parameter. Modern ETA/Sellita: 52°. Vintage: 42–45°. Affects amplitude estimation formula.

AGC Warning

Phone microphone AGC can compress tick sounds, inflating measured amplitude and shifting noise floor. Use a flat-response external mic for best results.