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group delay question. | diyAudio
https://www.diyaudio.com/community/threads/group-delay-question.8087/#:~:text=Group%20Delay%20is%20directly%20related%20to%20the%20change,require%20a%20speaker%20to%20be%20flat%20to%20DC.
Group Delay - diyAudio
https://www.diyaudio.com/forums/subwoofers/157910-delay.html
The group delay is a function of the driver resonant frequency and Q and the enclosure. If you want low group delay then you need to use a sealed box and a low Q (e.g. 0.5-0.7). The El pipe-o is a transmission line speaker, open at the far end so I would guess that this rolls off at 24dB/octave and hence has higher group delay than an ...
Group Delay | diyAudio
https://www.diyaudio.com/community/threads/group-delay.157910/
The group delay is a function of the driver resonant frequency and Q and the enclosure. If you want low group delay then you need to use a sealed box and a low Q (e.g. 0.5-0.7). The El pipe-o is a transmission line speaker, open at the far end so I would guess that this rolls off at 24dB/octave and hence has higher group delay than an ...
Discussion of Group Delay in Loudspeakers
https://www.trueaudio.com/post_010.htm
John is correct. group delay is a well defined variation on the concept of "time delay". It is NOT simply the difference in time between the input and output of a system. Rather it is the delay experienced by the signal "envelope" or "packet". Dick Heyser's works are well worth studying to explore these ideas further.
DT240 Pro | DIY-Audio-Heaven
https://diyaudioheaven.wordpress.com/headphones/measurements/brands-a-i/dt240-pro/
Below the Group Delay plot for the DT 240 Pro (Left, Right) From 80Hz to 150Hz there is a lot of ‘pad bounce’ causing phase shifts and delays. This does not help with the bass quality alas. A different plot is the spectrum plot. This basically is a CSD (Waterfall) plot but viewed from above where the level differences are color coded ...
DAC digital filters part 2 – deeper dive into AK4490 and ...
https://nihtila.com/2019/10/18/dac-digital-filters-part-2-deeper-dive-into-ak4490-and-ak4493-filters/
Phase is essentially time but relatively to the frequency. 180 degrees at 1 kHz is 0.5 ms but at 2 kHz 0.5 ms is 360 degrees. Drawing time (group delay) instead of phase would be constant. Sum of tones. If phase is non-linear, it means different frequencies have different group delay when going through the filter.
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