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DDoltonius replied to the thread Frequency response at the ear drum.Just be reminded that magnitude response (the amplitude of each of the frequencies) is sufficient to calculate the phase response of...
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DDoltonius replied to the thread Frequency response at the ear drum.The point is that the assumption is generally harmless. IEMs usually deviate from minimum-phase systems only very slightly, in...
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DDoltonius replied to the thread Frequency response at the ear drum.The idea is that you can fully reconstruct the CSD from the FR, in a linear time-invariant system. And with minimum-phase systems (which...
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DDoltonius replied to the thread Frequency response at the ear drum.The necessary assumption is simply that the IEM is minimum-phase. With this assumption in place, you can calculate the IR from the FR...
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DDoltonius replied to the thread Frequency response at the ear drum.The missing piece is that our usual frequency response graphs don't actually tell us the frequency response directly. Strictly speaking...
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DDoltonius replied to the thread Frequency response at the ear drum.Usually, manufacturers of multi-driver IEMs make sure that the phase response of the drivers are matched with each other, any remaining...
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DThere's a abstract kind of system that is called a "Linear Time-Invariant system". Anything can be considered a system (just not...
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DDoltonius replied to the thread Frequency response at the ear drum.I think the whole picture is this. The way most people measure frequency response on IEMs, i.e., with a sine wave sweep across the...
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DDoltonius replied to the thread Frequency response at the ear drum.When talking about IEMs as being minimum-phase, we implicitly make the assumption that they are linear and ignore the non-linearity, and...
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DDoltonius replied to the thread Frequency response at the ear drum.Another quote from wikipedia, on the page for Frequency Response: The frequency response characterizes systems in the frequency domain...
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DDoltonius replied to the thread Frequency response at the ear drum.That EQ adjustment mostly targets the decay of that specific frequency; it is very narrow band. The causal relationship is clear; if you...
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DDoltonius replied to the thread Frequency response at the ear drum.I did some more research. It seems that "the output follows the input as closely as possible in terms of impulse response" is indeed...
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DDoltonius replied to the thread Frequency response at the ear drum.In theory, yes. In practice, not yet possible to reliably and accurately do so, due to difficulty of precisely measuring FR at the eardrum.
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DDoltonius replied to the thread Frequency response at the ear drum.From wikipedia: A minimum-phase system, whether discrete-time or continuous-time, has an additional useful property that the natural...
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DDoltonius replied to the thread Frequency response at the ear drum.It could just mean that your subjective perception of detail and contrast is very coarse-grained, in relation to changes in FR.
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