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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#161
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HiFi (OT)
On Wednesday, January 18, 2017 at 12:50:08 AM UTC, Dave Plowman (News) wrote:
In article , NY wrote: 44.4kHz was a compromise between quality and play time. It was a very good compromise, but we might as well go a little better now there's no reason not to. I think that 44.1 was chosen to be sufficiently good that only dogs and bats would notice the limitations. It is generally accepted that human hearing is 20-20,000 Hz (https://en.wikipedia.org/wiki/Hearing_range and many other sources) and diminishes with age. For those who go on about how good FM radio is they should note it doesn't go anywhere near 20 kHz. ;-) It goes to 16 kHz which is quite close. They chose to cut it there so they coudl fit in eth 19 kHz pilot tone and then use the bandwidth up to 38 kHz for th stereo difference signal. Robert |
#162
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HiFi (OT)
In article ,
whisky-dave wrote: That could well be. However, you didn't work in TV all your working life like me. And I can assure you that the percentage of gay men working in the design department was little different from the average. working in TV in the middle agaes as you did doesn;t mean a lot as there weren't many gay men were there. Have you any figures which prove conclusively there were less homosexuals at any particular point in time? No, how would you get that info go back in time. You've just stated there were less gay men back in time. Of course there would be less given the smaller population. I'd have thought they'd be pretty much the same percentage wise, but if you make being gay illegal and punishable you might not get a very truthful responce from those you ask. Quite. But that's not what you said. Even Alan Turin wasn't gay or identified as gay by the masses at the time just like there;s few gay footballers. Ah. What you mean is there were many fewer who admitted to being homosexual, or having homosexual feelings. A very different matter. Well spotted. You may have also found that during those times less people known about such things I have a friend tonight visiting, when we first met 1994 she was a girl, she has had the hormones and everyone she meets assumes he is a male, then they work out he's a gay male. They have no idea he has a virgina. Medical treatment to 'change sex' is a relatively recent thing. And very little to do with being gay or not. Even in the 50s few outside the business knew Rock hudson was gay or that many of the actors were in fact gay, making it illegal to be gay didn't help you count them of course. There are very few gay footballers even today, 10 years or so ago there wasn't any were there. Have you asked them all? Do they all know you well enough to be honest with you? Nothing to do with me why come out to me. Design in stage, TV and film is far more than just choosing the fluffy cushions. It involves designing sets. More like an architect than anything else. Gay people can be architects as can women, I went out with one. Precisely. You'll find homosexuals in all walks of life. But in some professions can be more open about it. and in some professions they are more attracted to. why do you thin k it;s some why aren't all professions equal. -- *If horrific means to make horrible, does terrific mean to make terrible? Dave Plowman London SW To e-mail, change noise into sound. |
#163
Posted to uk.d-i-y
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HiFi (OT)
In article ,
RobertL wrote: On Wednesday, January 18, 2017 at 12:50:08 AM UTC, Dave Plowman (News) wrote: In article , NY wrote: 44.4kHz was a compromise between quality and play time. It was a very good compromise, but we might as well go a little better now there's no reason not to. I think that 44.1 was chosen to be sufficiently good that only dogs and bats would notice the limitations. It is generally accepted that human hearing is 20-20,000 Hz (https://en.wikipedia.org/wiki/Hearing_range and many other sources) and diminishes with age. For those who go on about how good FM radio is they should note it doesn't go anywhere near 20 kHz. ;-) It goes to 16 kHz which is quite close. They chose to cut it there so they coudl fit in eth 19 kHz pilot tone and then use the bandwidth up to 38 kHz for th stereo difference signal. Yup. They degraded the mono performance to squeeze in stereo. Nothing new under the sun. -- *Why isn't 11 pronounced onety one? * Dave Plowman London SW To e-mail, change noise into sound. |
#164
Posted to uk.d-i-y
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HiFi (OT)
Christ on a bike, traics and virginas.
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#165
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HiFi (OT)
On 01/02/2017 17:01, Dave Plowman (News) wrote:
In article , RobertL wrote: On Wednesday, January 18, 2017 at 12:50:08 AM UTC, Dave Plowman (News) wrote: In article , NY wrote: It is generally accepted that human hearing is 20-20,000 Hz (https://en.wikipedia.org/wiki/Hearing_range and many other sources) and diminishes with age. For those who go on about how good FM radio is they should note it doesn't go anywhere near 20 kHz. ;-) It goes to 16 kHz which is quite close. They chose to cut it there so they coudl fit in eth 19 kHz pilot tone and then use the bandwidth up to 38 kHz for th stereo difference signal. Yup. They degraded the mono performance to squeeze in stereo. Nothing new under the sun. May they realised that few adults could hear above 15 kHz, and children don't design radio transmission standards. Also, apparently, they were experimenting with multiplexing of various sorts since the early days of FM: http://en.wikipedia.org/wiki/FM_broadcasting#Stereo_FM -- Max Demian |
#166
Posted to uk.d-i-y
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HiFi (OT)
In article , Max
Demian scribeth thus On 01/02/2017 17:01, Dave Plowman (News) wrote: In article , RobertL wrote: On Wednesday, January 18, 2017 at 12:50:08 AM UTC, Dave Plowman (News) wrote: In article , NY wrote: It is generally accepted that human hearing is 20-20,000 Hz (https://en.wikipedia.org/wiki/Hearing_range and many other sources) and diminishes with age. For those who go on about how good FM radio is they should note it doesn't go anywhere near 20 kHz. ;-) It goes to 16 kHz which is quite close. They chose to cut it there so they coudl fit in eth 19 kHz pilot tone and then use the bandwidth up to 38 kHz for th stereo difference signal. Yup. They degraded the mono performance to squeeze in stereo. Nothing new under the sun. How do that degrade the mono performance then?.. May they realised that few adults could hear above 15 kHz, and children don't design radio transmission standards. Also, apparently, they were experimenting with multiplexing of various sorts since the early days of FM: http://en.wikipedia.org/wiki/FM_broadcasting#Stereo_FM Yes indeed there were, the Zenith GE system isn't that bad in fact for what it is it does work very well. Least they can't bugger it about and squeeze the bit rates and make it low quality Mono;!.. -- Tony Sayer |
#167
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HiFi (OT)
On Thu, 2 Feb 2017 00:22:39 +0000, tony sayer
wrote: In article , Max Demian scribeth thus On 01/02/2017 17:01, Dave Plowman (News) wrote: In article , RobertL wrote: On Wednesday, January 18, 2017 at 12:50:08 AM UTC, Dave Plowman (News) wrote: In article , NY wrote: It is generally accepted that human hearing is 20-20,000 Hz (https://en.wikipedia.org/wiki/Hearing_range and many other sources) and diminishes with age. For those who go on about how good FM radio is they should note it doesn't go anywhere near 20 kHz. ;-) It goes to 16 kHz which is quite close. They chose to cut it there so they coudl fit in eth 19 kHz pilot tone and then use the bandwidth up to 38 kHz for th stereo difference signal. Yup. They degraded the mono performance to squeeze in stereo. Nothing new under the sun. How do that degrade the mono performance then?.. The deviation has to be reduced to allow for the stereo component, so signal to noise ratio is reduced slightly for mono listeners. No doubt the PP was thinking that the bandwidth was wider before stereo as there was no explicit filtering - but there wasn't any meaningful signal above 15kHz anyway, especially if you didn't live in the SE. May they realised that few adults could hear above 15 kHz, and children don't design radio transmission standards. Also, apparently, they were experimenting with multiplexing of various sorts since the early days of FM: http://en.wikipedia.org/wiki/FM_broadcasting#Stereo_FM Yes indeed there were, the Zenith GE system isn't that bad in fact for what it is it does work very well. Least they can't bugger it about and squeeze the bit rates and make it low quality Mono;!.. No, but they can bugger about with the dynamic range. |
#168
Posted to uk.d-i-y
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HiFi (OT)
On 02/02/17 00:22, tony sayer wrote:
In article , Max Demian scribeth thus On 01/02/2017 17:01, Dave Plowman (News) wrote: In article , RobertL wrote: On Wednesday, January 18, 2017 at 12:50:08 AM UTC, Dave Plowman (News) wrote: In article , NY wrote: It is generally accepted that human hearing is 20-20,000 Hz (https://en.wikipedia.org/wiki/Hearing_range and many other sources) and diminishes with age. For those who go on about how good FM radio is they should note it doesn't go anywhere near 20 kHz. ;-) It goes to 16 kHz which is quite close. They chose to cut it there so they coudl fit in eth 19 kHz pilot tone and then use the bandwidth up to 38 kHz for th stereo difference signal. Yup. They degraded the mono performance to squeeze in stereo. Nothing new under the sun. How do that degrade the mono performance then?.. You needed a steep rolloff at 16Khz and a deep notch at 19Khz applied to the audio before adding in the pilot tone and subcarrier. 19Khz. However what really screwed FM was going down to 100Khz channel spacing with 200Khz in any local area. You really needed wideband IF to get decent stereos at high frequencies, and the sharp skirted IF filters needed to reject adjacent channels were noticeably worse when applied :-( Digital should and could be better. -- "Socialist governments traditionally do make a financial mess. They always run out of other people's money. It's quite a characteristic of them" Margaret Thatcher |
#169
Posted to uk.d-i-y
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HiFi (OT)
In article ,
Bill Taylor wrote: How do that degrade the mono performance then?.. The deviation has to be reduced to allow for the stereo component, so signal to noise ratio is reduced slightly for mono listeners. No doubt the PP was thinking that the bandwidth was wider before stereo as there was no explicit filtering - but there wasn't any meaningful signal above 15kHz anyway, especially if you didn't live in the SE. In the early days of FM there was often little difference between FM and AN bandwidth, due to the land lines, if a long way from London. But all that changed with NICAM. May they realised that few adults could hear above 15 kHz, and children don't design radio transmission standards. Also, apparently, they were experimenting with multiplexing of various sorts since the early days of FM: http://en.wikipedia.org/wiki/FM_broadcasting#Stereo_FM Yes indeed there were, the Zenith GE system isn't that bad in fact for what it is it does work very well. Least they can't bugger it about and squeeze the bit rates and make it low quality Mono;!.. No, but they can bugger about with the dynamic range. The way the signal is processed before the transmitter can make more difference than the transmission medium. -- *If all the world is a stage, where is the audience sitting? Dave Plowman London SW To e-mail, change noise into sound. |
#170
Posted to uk.d-i-y
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HiFi (OT)
In article ,
whisky-dave writes On Tuesday, 31 January 2017 14:03:00 UTC, Bob Eager wrote: On Tue, 31 Jan 2017 02:52:24 -0800, whisky-dave wrote: On Monday, 30 January 2017 23:49:47 UTC, Johnny B Good wrote: On Wed, 18 Jan 2017 05:32:26 -0800, whisky-dave wrote: ====snip==== Like some people can see better and more gradients of colour especially women it seems can better distinguish small differences in shades of colours. Considering the largely female readership of "Fifty Shades of Grey", I find that rather surprising. You'd think a book called "A Thousand Shades of Grey" would have been the more appealing title if that were true. True but it was a man that invented the black and white TV, he didn't say well I'll call TVs mulitiple shades of grey. He might have. Unlikely he actually named it. I always refer to it as 'monochrome'. TV licensing call it a Black and white TV licence And then printed it on green paper. -- bert |
#171
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HiFi (OT)
In article , Bill Taylor
scribeth thus On Thu, 2 Feb 2017 00:22:39 +0000, tony sayer wrote: In article , Max Demian scribeth thus On 01/02/2017 17:01, Dave Plowman (News) wrote: In article , RobertL wrote: On Wednesday, January 18, 2017 at 12:50:08 AM UTC, Dave Plowman (News) wrote: In article , NY wrote: It is generally accepted that human hearing is 20-20,000 Hz (https://en.wikipedia.org/wiki/Hearing_range and many other sources) and diminishes with age. For those who go on about how good FM radio is they should note it doesn't go anywhere near 20 kHz. ;-) It goes to 16 kHz which is quite close. They chose to cut it there so they coudl fit in eth 19 kHz pilot tone and then use the bandwidth up to 38 kHz for th stereo difference signal. Yup. They degraded the mono performance to squeeze in stereo. Nothing new under the sun. How do that degrade the mono performance then?.. The deviation has to be reduced to allow for the stereo component, so signal to noise ratio is reduced slightly for mono listeners. No doubt the PP was thinking that the bandwidth was wider before stereo as there was no explicit filtering - but there wasn't any meaningful signal above 15kHz anyway, especially if you didn't live in the SE. Made not a lot of odds the S/N is very good anyway assuming, and this is the bit that rarely happens anymore, a decent input signal i.e. roof aerial and all that.. Quite right about the studio to TX feeds the signals were very much up to what the olde postal orifice could manage;!.. May they realised that few adults could hear above 15 kHz, and children don't design radio transmission standards. Also, apparently, they were experimenting with multiplexing of various sorts since the early days of FM: http://en.wikipedia.org/wiki/FM_broadcasting#Stereo_FM Yes indeed there were, the Zenith GE system isn't that bad in fact for what it is it does work very well. Least they can't bugger it about and squeeze the bit rates and make it low quality Mono;!.. No, but they can bugger about with the dynamic range. Thats a much wider illness nowadays than radio;(.. -- Tony Sayer |
#172
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HiFi (OT)
In article , The Natural Philosopher
scribeth thus On 02/02/17 00:22, tony sayer wrote: In article , Max Demian scribeth thus On 01/02/2017 17:01, Dave Plowman (News) wrote: In article , RobertL wrote: On Wednesday, January 18, 2017 at 12:50:08 AM UTC, Dave Plowman (News) wrote: In article , NY wrote: It is generally accepted that human hearing is 20-20,000 Hz (https://en.wikipedia.org/wiki/Hearing_range and many other sources) and diminishes with age. For those who go on about how good FM radio is they should note it doesn't go anywhere near 20 kHz. ;-) It goes to 16 kHz which is quite close. They chose to cut it there so they coudl fit in eth 19 kHz pilot tone and then use the bandwidth up to 38 kHz for th stereo difference signal. Yup. They degraded the mono performance to squeeze in stereo. Nothing new under the sun. How do that degrade the mono performance then?.. You needed a steep rolloff at 16Khz and a deep notch at 19Khz applied to the audio before adding in the pilot tone and subcarrier. 19Khz. Yes except that there wasn't much coming in above 15 k anyway.. However what really screwed FM was going down to 100Khz channel spacing with 200Khz in any local area. You really needed wideband IF to get decent stereos at high frequencies, and the sharp skirted IF filters needed to reject adjacent channels were noticeably worse when applied :-( Yes but even so given a decent input signal then it could be very good and a decent well designed tuner, now the former is the real problem no one spends on a decent aerial anymore. Digital should and could be better. Tell us what we don't know guv;!.. -- Tony Sayer |
#173
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HiFi (OT)
On Wednesday, 1 February 2017 16:59:06 UTC, Dave Plowman (News) wrote:
In article , whisky-dave wrote: That could well be. However, you didn't work in TV all your working life like me. And I can assure you that the percentage of gay men working in the design department was little different from the average. working in TV in the middle agaes as you did doesn;t mean a lot as there weren't many gay men were there. Have you any figures which prove conclusively there were less homosexuals at any particular point in time? No, how would you get that info go back in time. You've just stated there were less gay men back in time. Of course there would be less given the smaller population. So there's nothing wrong with my statement then was there. in rome it was quite common for a man to have a younger male for sex. That didn't mean you were gay though. In a lot of muslim countires you are only gay if yuo recive penatration for another male, if you're the one doing the penatrating your not gay. Reminds me of a joke by an asutrailan comedian who's name I can't remmeber. He's heavy metal rock sort of person if that helps. I'd have thought they'd be pretty much the same percentage wise, but if you make being gay illegal and punishable you might not get a very truthful responce from those you ask. Quite. But that's not what you said. Correct, and I am right, there were less gay men in the past. I doubt adam was gay ;-) and he wsas the first man wasn't he :-) Even Alan Turin wasn't gay or identified as gay by the masses at the time just like there;s few gay footballers. Ah. What you mean is there were many fewer who admitted to being homosexual, or having homosexual feelings. A very different matter. Well spotted. You may have also found that during those times less people known about such things I have a friend tonight visiting, when we first met 1994 she was a girl, she has had the hormones and everyone she meets assumes he is a male, then they work out he's a gay male. They have no idea he has a virgina. Medical treatment to 'change sex' is a relatively recent thing. And very little to do with being gay or not. It has a lot to do with what's meant by gay. When he was a girl no one thought she was gay when kissinly cuddling a male. Now when he's seen like that with a male they see him as gay. He has avery close friend who's going through the same being born female. He was a male stripper up until a few months ago. He used dildos down the pants so never went totally naked and only performned in gay strip joints both here and in the states. Are ladyboys gay ? I don't think they are. |
#174
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HiFi (OT)
On Wednesday, 1 February 2017 17:24:55 UTC, bm wrote:
Christ on a bike, traics and virginas. Did he have them too amazing isn't it. Do you know about the millipede and 4 penisies . I wonder if jesus did. |
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