Phase Shift Independent of Frequency: Circuit Solutions

AI Thread Summary
The discussion focuses on finding a circuit that provides a phase shift independent of frequency, with concerns about the complexity of digital solutions. Participants inquire about the specific requirements for phase shift, including the amount needed and the frequency range. It is noted that standard audio circuits, like treble attenuators, produce frequency-dependent phase shifts that can distort sound quality. Suggestions for alternatives, such as delay lines, are mentioned but not elaborated upon. The conversation emphasizes the challenge of achieving a constant phase shift without introducing distortion.
GlynnHeeswijk
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Hi

Is anyone aware of a circuit that could provide a phase shift independent of frequency?
I have thought of doing it digitally but the number of components needed are ridicules.

Thank you
 
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a delay line?
 
GlynnHeeswijk said:
Hi

Is anyone aware of a circuit that could provide a phase shift independent of frequency?
I have thought of doing it digitally but the number of components needed are ridicules.

Thank you

What's your purpose?

How much phase shift? Over what frequency range?
 
...and do you mean a constant phase shift in terms of number of micro/nano seconds, or a constant phase shift in terms of % of period?
 
A standard audio treble attenuator based on an R C circuit produces a phase shift that is dependent on frequency: 1 radian per neper, or 6.6 degrees per dB. This distorts the sound quality of the audio. How can we eliminate the phase shift?
 
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