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Phase-Shift Modulator - Hephaestus Audio
https://hephaestusaudio.com/media/2008/11/phase-shift-modulator.pdf
instability. However, with a phase-shift modulator, the amplifier really is an oscillator – one with an input that allows for control of the low-frequency portion (i.e. the audio band) of the output. Advantages • Great simplicity • The amplifier is essentially a high-power comparator
Phase shift and its importance in audio amplifiers ...
https://electronics.stackexchange.com/questions/155649/phase-shift-and-its-importance-in-audio-amplifiers
It's often more useful to work out the phase shifts in terms of group delays : for example a 360 degree phase shift on a 200Hz signal is 5 ms (1 full cycle) and a 1080 degree phase shift would be 15ms. Now consider the speed of sound : about 1000 feet per second, so one way to delay the other signal is to move its speaker back ... 15 feet!
Phase positions and phase shifts explained - Teufel …
https://blog.teufelaudio.com/phase-positions-and-phase-shifts-explained/
First, phase shifts describe the oscillation behaviour of sound waves in relation to each other. Secondly, phase shifts between loudspeakers in a system can be caused by the loudspeakers themselves, the listening position and the room acoustics. Thirdly, phase shifts can …
Variable-state filter phase shift? | diyAudio
https://www.diyaudio.com/community/threads/variable-state-filter-phase-shift.377172/
This is a simple "yes" or "no" question, I guess. Is the output of a standard variable-state filter 180% phase shifted in relation to the source? I've read that many phase shifts happen within the filter's integrators, but I don't know if the overall output is shifted as well. I …
CONTROLLING PHASE SHIFT DIGITALLY A simple phase shift ...
https://pdfserv.maximintegrated.com/en/an/AN184.pdf
As the signal frequency varies from DC to infinity, the phase shift will vary from 0 to +180 degrees. You can also see that by varying R1, the phase shift at a given frequency will vary likewise. If the position of R1 and C1 are reversed, as in Figure 2, the transfer function becomes Application Note 184 Digitally-Controlled Phase Shift Using the DS1669 www.maxim-ic.com
Altering the phase of an audio output. (in degrees, not ...
https://forum.allaboutcircuits.com/threads/altering-the-phase-of-an-audio-output-in-degrees-not-simply-0-or-180.133099/
"Phase" shifting audio is ambiguous because of the 1000:1 frequency spectrum. My guess is that he wants an adjustable time delay that is constant for all frequencies. This can compensate for both physical placement issues and crossover effects. As the post #2 schematic indicates, this is not a beginners project.
BALANCED VARIABLE PHASE SHIFT CIRCUIT - idc-online.com
https://www.idc-online.com/technical_references/pdfs/electronic_engineering/Balanced_Variable_Phase_Shift_Circuit.pdf
BALANCED VARIABLE PHASE SHIFT CIRCUIT While working on the new UHF receiver for VESNA, I came across a problem when I wanted to correct for a delay in a 16 MHz sine wave signal. The idea was to have a circuit where you could adjust the phase shift by …
Phase Demystified - Sound on Sound
https://www.soundonsound.com/techniques/phase-demystified
If you gradually delay the audio going through the second channel, however, the peaks and troughs of the two sine waves shift out of alignment. Because of the unique properties of sine waves, the combination of the two channels will now still produce a sine wave of the same frequency, but its level will be lower than if the two channels were in phase, and we say that …
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