tankas
Member
I can't tell the difference. (p.s. have alright ears, was accepted & studied in a music school)
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Topping E30 DAC Review
- Thread starter amirm
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I can't tell the difference. (p.s. have alright ears, was accepted & studied in a music school)
Now you are beginning to understand. The cannon behaves like a spherical beamer. If a drum of vertical membrane is hit from behind you get an overpressure wave front in front of it and an underpressure front sitting behind it.
tankas
Member
Yeah, sorry, this is the correct link for 'Absolute Polarity Blind Listening Test'
https://www.audiocheck.net/blindtests_abspolarity.php
Well I tested myself, and with that sample of music and I can't tell the difference between them, how representative that sample is for showing any characteristic difference between original & inverted absolute phase I do not know. The main reason why I couldn't differentiate between the two, was because I couldn't really identify where in the sample the inverted differed from the original....at times I felt like I could hear a difference but it didn't really stay constant from one playback to the next...this was when I was trying to 'train' myself by listening to the original a number of times and then switching quickly to the inverted. From listening to the samples I developed a 'theory' that the original had a bit more attack in the pluck of the guitar and perhaps a few more prominent notes in some places...but I couldn't reliably latch onto that when listening to the unknown samples, and I also don't know if my theory was correct anyway.
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Both of which are moving outwards from the source. No matter where the listener is, and what direction they happen to be facing, the overpressure arrives first, followed by the underpressure.
In the polarity-inverted wave, the opposite is true: no matter where the listener is located, the underpressure arrives first, followed by the overpressure.
Hence, your statement that polarity-reversal is just like sitting behind the orchestra, facing away from it, is completely wrong, as is the statement that "If there are only (ideal) sherical beamers in the orchestra no polarity revesal effect can be heard."
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When that link was posted earlier in this thread, I pointed out that 128 kbps CBR MP3s are worthless as a test of anything this subtle. I contend that remains true.
You'll have a better shot with the trombone samples that I posted in WAV format.
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Unless you sit inside drum, you will not hear the other side of the membrane. Planar wave is just unrealistic, you need to produce with a huge membrane and a wall of phase aligned speakers.
tankas
Member
I've seen it and also tried and couldn't tell it apart.
I find it very hard to find a difference to those two. If you had to force me to notice a difference I would say it's at about 22 seconds into the track where the trombone shoots up in volume and does a quick rising 'sweep' of a number of notes...I would say the original sample has a bit more of an 'edgy timbre' than the inverted one....if you had to force me to notice a difference, ha!
So, if any difference can be expected, what difference would there theoretically be in those two samples?
My impression when i listing this the Original comes more from Left and the invert more from the right side.The first impression is you don`t hear it,
because if you do not know how it was mixed I would classify it as not disturbing.Otherwise it is if you already know the music and know that this is on the left and that is on the right and suddenly it is different then it can be perceived as disturbing. I am totally keen on the E30, reason tells me to wait until it has been completely resolved.What I have done now, I was able to cancel my order.No matter for me to wait 14 days until it arrives and possibly back what takes another 14 days and maybe 7 days until it has been fixed and send another 14 days to send it back. Then I can just as well wait another 2 months until it has been completely fixed. I would classify an official statement of topping as professional and clarify it So that the dilemma ends
.You didn't actually try the ABX test, did you?
LeandroFlu
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I heard no difference ...
There was an ABX test on that web page. That was the whole point!
Foobar2000 with the ABX component.
Sorry, I don't understand.
Just wanted to give an update for anyone that is still thinking of ordering.
I placed my order with Apos on the 25th in the evening. Shipment was received and processed by DHL on the 29th. It's due to arrive on 6/3 to CA and already cleared customs in Hong Kong.
I'm excited for it and it's good to hear that it's a slightly better DAC than the Modi 3.
I placed my order with Apos on the 25th in the evening. Shipment was received and processed by DHL on the 29th. It's due to arrive on 6/3 to CA and already cleared customs in Hong Kong.
I'm excited for it and it's good to hear that it's a slightly better DAC than the Modi 3.
raif71
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- Sep 7, 2019
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Could he have heard the inverted polarity and liked it ?
As a purist, I go for linear phase and as little ultrasonic leakage as possible (i.e. #1). Many prefer minimum phase ("short delay" is AKM's euphemism) and/or more ultrasonics ("slow rollof")
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