Phase shift in class D amplifiers. How it affects the sound? - Page 2

maty tinman · 17th April 2018, 09:39 PM

Quote:

Relative phase is audible, depending on the amount, the frequency and the context. Two speakers side by side with 90° phase shift between them will sound dreadful - and the sound will change as you move about. The relative phase of two musical instruments playing in harmony makes the sound you hear - take away the phase shifts, and it will sound flat and lifeless.

IVX · 18th April 2018, 04:11 AM

I've simulated the wave file as source and saved R1 voltage as wave file again. That's typical H-bridge LC filter, suitable for most popular Ti amps. 20kHz -40deg. Anyone hear the difference original vs simulated?
Diana Krall_1.wav — Yandex.Disk
Diana Krall_3.wav — Yandex.Disk

maty tinman · 18th April 2018, 06:32 PM

Easy. With foobar2000 and JRMC 64 bits.

One sound more "natural" or "credible", with more "body" than other.

5th element · 18th April 2018, 06:38 PM

I would like to point out that in the original post the graphs of phase are the electrical phase of the loudspeakers. This has absolutely nothing to do with the acoustic phase shift of the drivers + crossover combination.

maty tinman · 21st April 2018, 09:26 AM

Is anyone else encouraged to make the test?

DUG · 21st April 2018, 03:47 PM

Quote:

Originally Posted by 5th element

I would like to point out that in the original post the graphs of phase are the electrical phase of the loudspeakers.

...

Yes, the second and third are of the magnitude and phase of speaker impedance.

The first is the output impedance and the phase of that output impedance of the "IcePower 1200AS2 class D module".

Quote:

Originally Posted by 5th element

...This has absolutely nothing to do with the acoustic phase shift of the drivers + crossover combination.

Yes again

maty tinman · 3rd May 2018, 02:55 PM

Two weeks elapsed from my email to Icepower and there is no answer.

Phase shift in class D amplifiers. How it affects the sound?

shc · 3rd May 2018, 03:21 PM

Quote:

Originally Posted by maty tinman

Is anyone else encouraged to make the test?

Yes. No audible difference for me.

maty tinman · 4th May 2018, 08:29 PM

Thank you for the answer.

It seems that the subject does not interest. The absence of more comments makes me more intrigued by the phase shift in the audio band. Class D technology.

maty tinman · 08:38 PM

class D phase shift - Google Search

18th April 2018, 06:38 PM	#14
5th element diyAudio Member Join Date: Oct 2002 Location: England	I would like to point out that in the original post the graphs of phase are the electrical phase of the loudspeakers. This has absolutely nothing to do with the acoustic phase shift of the drivers + crossover combination. __________________ What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz! Now with website! www.5een.co.uk under construction.

4th May 2018, 08:34 PM	#20
maty tinman diyAudio Member Join Date: Apr 2012 Location: Tarragona (Spain)	class D phase shift - Google Search Last edited by maty tinman; 4th May 2018 at 08:38 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Is phase shift audible?	Conrad Hoffman	Everything Else	4	30th October 2014 07:52 PM
minimal phase shift (at audio frequencies) class d possible?	peskywinnets	Class D	19	14th June 2012 04:02 PM
Why Class A Guitar Amplifiers Sound So Good ........	poynton	Instruments and Amps	16	18th March 2011 08:20 PM
Phase Shift PWM	Andrew Eckhardt	Class D	6	14th November 2010 08:56 AM
Zero phase-shift	gareth	Solid State	11	9th May 2008 05:45 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

18th April 2018, 06:32 PM	#13
maty tinman diyAudio Member Join Date: Apr 2012 Location: Tarragona (Spain)	Easy. With foobar2000 and JRMC 64 bits. One sound more "natural" or "credible", with more "body" than other.

21st April 2018, 09:26 AM	#15
maty tinman diyAudio Member Join Date: Apr 2012 Location: Tarragona (Spain)	Is anyone else encouraged to make the test?

3rd May 2018, 02:55 PM	#17
maty tinman diyAudio Member Join Date: Apr 2012 Location: Tarragona (Spain)	Two weeks elapsed from my email to Icepower and there is no answer. Phase shift in class D amplifiers. How it affects the sound?

4th May 2018, 08:29 PM	#19
maty tinman diyAudio Member Join Date: Apr 2012 Location: Tarragona (Spain)	Thank you for the answer. It seems that the subject does not interest. The absence of more comments makes me more intrigued by the phase shift in the audio band. Class D technology.