The Silent Transmission What remains when two recordings agree?
Align the recordings, subtract what they share, and read the seven residual tones using the calibration table. The resulting word names which side of a revision to recover.
SYNTHETIC FIELD-MODEL RECORDINGS · MONO PCM16 · 16,000 Hz
Load the two recordings The record is silent until you choose to play it.
Load the recordings to inspect the numerical signal. Hearing is optional.
Measured difference · seven time slots Slot Strongest calibrated frequency Energy 1 Not measured — 2 Not measured — 3 Not measured — 4 Not measured — 5 Not measured — 6 Not measured — 7 Not measured —
Calibration alphabet A 400 HzB 450 HzC 500 HzD 550 HzE 600 HzF 650 HzG 700 HzH 750 HzI 800 HzJ 850 HzK 900 HzL 950 HzM 1000 HzN 1050 HzO 1100 HzP 1150 HzQ 1200 HzR 1250 HzS 1300 HzT 1350 HzU 1400 HzV 1450 HzW 1500 HzX 1550 HzY 1600 HzZ 1650 Hz
Consult a marginal note The files share a carrier and differ in the residual signal.
Read a more direct note Advance B by the archive number in milliseconds; use Difference, then compare each tone against the calibration table.
The analysis uses the original PCM samples. Browser hardware sample rates do not change this table.
Signal metadata This browser is not saving your Reader’s Copy. You can continue investigating and export your notes before leaving.