Node + Web Audio

Phase Jump Lab

Hold a carrier tone, inject controlled phase discontinuities, and map the transient frequency response as a heatmap.

Status

Idle

Phase-jump transient experiment for Chrome, Edge, or another modern browser on Windows.

Sine enabled Carrier frequency

Amplitude 20% L/R balance Center

Waveform

Recent microphone samples

Sweep phase-jump magnitude while holding carrier frequency fixed

Enable phase sweep Start phase jump

deg

End phase jump

deg

Phase levels

levels

Jump delay

Loop phase sweep Time per level

Current phase jump 0 deg

Level progress 0.0 / 60.0 s

Recorded levels 0 rows

Tune resolution, smoothing, scale, and the displayed heatmap band

FFT size Smoothing 0.75 Display start

Display end

Minimum dB

Maximum dB

Subtract column background Background percentile

Frequency scale

Resolution 23.4 Hz/bin

Visible band 0 Hz to 12.0 kHz

Displayed range -100 dB to -20 dB

Current step frames 0 frames

Background mode Need 2 rows