RE: iPhone 6 Measurements.

Computer Audio Asylum

Music servers and other computer based digital audio technologies.

In Reply to: iPhone 6 Measurements. posted by Archimago on October 10, 2014 at 08:04:15:

What exactly does "minimum phase digital filtering" mean? Is it supposed to be better than linear phase? The iPhone square waves show significant phase shift revealed by unsymmetrical ringing. This is how square waves looked on the original CD players from Sony and Phillips in the early 1980s.
Linear phase for a square wave from a digital device that truncates higher harmonics abruptly looks like this.

.
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Here is an actual 1000-Hz square wave from a CD player with linear phase playing a test CD.

Edits: 10/10/14

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Follow Ups Full Thread

Topic - iPhone 6 Measurements. - Archimago 08:04:15 10/10/14 (7)

RE: iPhone 6 Measurements. - soundchekk 23:32:54 10/12/14 (0)

5.44 x 2.64 x 0.27 [nt] - Joe Murphy Jr 18:42:25 10/11/14 (0)

That was useful. - jusbe 11:55:19 10/10/14 (0)

RE: iPhone 6 Measurements. - John Elison 10:46:44 10/10/14 (0)

RE: iPhone 6 Measurements. - AbeCollins 09:24:58 10/10/14 (2)

RE: iPhone 6 Measurements. - Bob_C 12:08:39 10/10/14 (1)

RE: iPhone 6 Measurements. - AbeCollins 21:44:54 10/10/14 (0)

Follow Ups

RE: iPhone 6 Measurements. - John Elison 10:46:44 10/10/14 (0)

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