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Low Earth Orbit
DIY Audio
60 Degree DIY Mid Hi - AKA PM60
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<blockquote data-quote="Raimonds Skuruls" data-source="post: 147193" data-attributes="member: 9926"><p>Re: 60 Degree DIY Mid Hi</p><p></p><p></p><p>Hi Mark,</p><p></p><p>The phase is parameter from „steady state” analysis – from pretty large time interval. It means, it is seriously affected by quality of IR that is obtained from the system under test. You can improve its quality by shortening window but for a price of reduced resolution in LF or even complete loss of information about LF.</p><p> </p><p>You can call the TDA graph as spectrogram. Very high resolution spectrogram.</p><p>And it is like well known Impulse Response but with one more dimension – frequency – added.</p><p> </p><p>And the phase. I hope you know that phase and time are connected by derivative or integral. It means, if you now time curve, you can calculate a phase curve by integration of time curve. And this curve will highly depend from the zero time point you have set for your time curve.</p><p>If we know the time curve, the phase curve is loosing any value.</p></blockquote><p></p>
[QUOTE="Raimonds Skuruls, post: 147193, member: 9926"] Re: 60 Degree DIY Mid Hi Hi Mark, The phase is parameter from „steady state” analysis – from pretty large time interval. It means, it is seriously affected by quality of IR that is obtained from the system under test. You can improve its quality by shortening window but for a price of reduced resolution in LF or even complete loss of information about LF. You can call the TDA graph as spectrogram. Very high resolution spectrogram. And it is like well known Impulse Response but with one more dimension – frequency – added. And the phase. I hope you know that phase and time are connected by derivative or integral. It means, if you now time curve, you can calculate a phase curve by integration of time curve. And this curve will highly depend from the zero time point you have set for your time curve. If we know the time curve, the phase curve is loosing any value. [/QUOTE]
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60 Degree DIY Mid Hi - AKA PM60
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