Phase Matching and Delay/Time Alignment Example Plots

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Posted by emailtim (A) on July 25, 2020 at 11:28:00

For those that are not familiar with phase and delay/time alignment plots, here is a plot of a sub and a main with matching phase at a 250Hz XO, but different time alignments.

Again, the only difference between the multiple plot lines is the delay/time alignments which range from [0ms - 7.25ms].

For this configuration 6.1ms produced the flattest most consistent curve across the 250Hz XO region. It also produced the cleanest step, group delay and frequency SPL plots.

Hope this gives you some ideas if you are inclined to try REW or similar software to see what your rig is doing.

UPDATE: Here are a few more plots showing the delay/timing alignment effects.

Frequency over XO region.

Linear Phase STEP between 0ms and 6.1ms.

Linear Phase IR between 0ms and 6.1ms. Virtually no difference.

.

2022/03/30 Historical Records CENSORED

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Topic - Phase Matching and Delay/Time Alignment Example Plots - emailtim 11:28:00 07/25/20 (15)

Vertical Wavelets for Timinng Alignments - emailtim 08:47:17 07/28/20 (1)

RE: Vertical Wavelets for Timinng Alignments - Barry 10:39:09 07/28/20 (0)

RE: Phase Matching and Delay/Time Alignment Example Plots - Barry 14:31:36 07/26/20 (4)

RE: Phase Matching and Delay/Time Alignment Example Plots - emailtim 15:09:49 07/26/20 (3)

RE: Phase Matching and Delay/Time Alignment Example Plots - shumi 17:39:45 07/26/20 (2)

RE: Phase Matching and Delay/Time Alignment Example Plots - Barry 10:25:32 07/27/20 (0)

RE: Phase Matching and Delay/Time Alignment Example Plots - emailtim 19:43:04 07/26/20 (0)

RE: Phase Matching and Delay/Time Alignment Example Plots - pictureguy 20:36:22 07/25/20 (4)

RePhase generates FIR filters. - emailtim 22:04:39 07/25/20 (3)

RE: RePhase generates FIR filters. - pictureguy 00:59:15 07/26/20 (2)

RE: RePhase generates FIR filters. - emailtim 10:02:50 07/26/20 (1)

RE: RePhase generates FIR filters. - pictureguy 10:39:28 07/26/20 (0)

RE: Phase Matching and Delay/Time Alignment Example Plots - BDP24 14:36:34 07/25/20 (2)

Found this - emailtim 19:43:29 07/28/20 (0)

RE: Phase Matching and Delay/Time Alignment Example Plots - emailtim 15:43:32 07/25/20 (0)

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