Phase shift
Turn milliseconds into a clearer picture of phase.
Inputs
YOUR SYSTEMHz
2020000
ms
0100
Result
METERPhase lag
90.0°
Wrapped to the range 0 to less than 360 degrees
Total delayed cycles
0.250cycles
Unwrapped lag
90.0°
Period at frequency
10.000ms
How it works
The same delay, a different phase at every frequency.
A time delay shifts a waveform by a fraction of its cycle. Multiply the number of delayed cycles by 360 to find phase lag, then wrap it to one rotation.
The formula
- — frequency in hertz
- — time delay in milliseconds
- A lag is a negative phase in signed notation
Worth knowing
A 2.5 ms delay is 90 degrees at 100 Hz, but 180 degrees at 200 Hz. A full 360-degree wrap does not mean broadband time alignment.
Assumptions
Shows pure delay only. Loudspeakers, crossovers and filters add their own frequency-dependent phase responses. Polarity reversal is not the same as a time delay.