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John Curl's Blowtorch preamplifier part III
John Curl's Blowtorch preamplifier part III
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Old 27th May 2019, 07:33 AM   #20101
Zung is offline Zung  Switzerland
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Originally Posted by billshurv View Post
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So she's asked me what to do if offered the French place tomorrow. Does protocol allow one to ask for a week to consider if you've accepted the free flight and accomodation? Being a ficky I have no idea.
Never mind the protocol, just go ahead and ask. You can even hint at the fact there's competition lurking. AFAIK, there's still strong demand in the technical/scientific field; another field worth looking into is AI.
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Old 27th May 2019, 07:35 AM   #20102
Max Headroom is offline Max Headroom  Australia
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Tell me, do you manage to keep a straight face whilst typing this stuff?
Yes I am completely serious and was willing to help you whilst going along with your little game of playing stupid, I now realise that you are not pretending. Are you saying that you are unable to distinguish acoustic absolute polarity ?.

Dan.
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Old 27th May 2019, 07:39 AM   #20103
dreamth is offline dreamth  Romania
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how do i unsubscribe to a thread when i don't want to get notifications on that thread alone anymore?
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Old 27th May 2019, 07:40 AM   #20104
PMA is offline PMA  Europe
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Below is a step response just now measured on an audio amplifier with 20 feet of zip cord speaker cable and loaded with a speaker. Measured at speaker. Where is the problem that you are describing?????
Input step added. The amp is inverting. I can see no other shifts than those by frequency response of the amp. No cable effects in the ITD area. The measurements are level independent, same for small and large signals, unless we are in noise.
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Old 27th May 2019, 07:47 AM   #20105
Zung is offline Zung  Switzerland
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how do i unsubscribe to a thread when i don't want to get notifications on that thread alone anymore?
Quick Links -> Subscribed Threads
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Farewell.
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Old 27th May 2019, 07:48 AM   #20106
scottjoplin is offline scottjoplin  Wales
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Originally Posted by Max Headroom View Post
Are you saying that you are unable to distinguish acoustic absolute polarity ?.
I'm happy to keep playing if you are? Absolute Polarity Blind Listening Test
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Old 27th May 2019, 07:51 AM   #20107
PMA is offline PMA  Europe
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Similar again - poor systems with bad asymmetry (distortion) may allow you to "hear" absolute phase. With good systems it is almost impossible and possible only on some special signals.
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Old 27th May 2019, 07:59 AM   #20108
chris719 is offline chris719  United States
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Originally Posted by Chris Hornbeck View Post
It's Memorial Day in America, when we remember that freedom isn't free.
According to my TV and radio, it's a national holiday for mattress sales.
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Old 27th May 2019, 08:03 AM   #20109
dreamth is offline dreamth  Romania
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Farewell.
thank you!
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Old 27th May 2019, 08:47 AM   #20110
Max Headroom is offline Max Headroom  Australia
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Originally Posted by PMA View Post
Similar again - poor systems with bad asymmetry (distortion) may allow you to "hear" absolute phase. With good systems it is almost impossible and possible only on some special signals.
Imho those 'special' signals are more common that you give credit for. Vocals, especially spoken word in non reverberant environment are very clearly audibly asymmetrical waveform and these and other natural asymmetric impulsive sounds are perfectly distinguishable on simple but clean speakers like good full range. Multiway loudspeakers can introduce phase anomalies that serve to confuse timing information in the crossover overlaps.

Dan.
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