studiot

How do you then interpret the first axiom of equivalence ?

For the record the word Algebra comes from the title of a book wriiten somewhere between 750 and 850 AD by an arab scholar in the Dar al-Hikma in Baghdad. The book was entitled al-Kitab al-mukhtasar fi hisab al-jabr wa'l-muqabala (A handbook of calculation by completion and reduction) In it he restudies an equation first studied by Diophantus (the Greek) some 600 years earlier. The author, al-Khwarizimi was responsible for another book introducing the indian decimal number system and its place settings to the middle east and was much copied at this time in europe by medieval scholars as the 'new arithmetic' These european scholars called themselves 'algorismists'. Which word was later to become our present day usage algorithm.

Thank you that was useful information whilst I had dinner. OK so some further explanation to take with you. It's getting late for proper composition so I will add a block/flow diagram that should help a lot. Meanwhile a few words. The average CD is 650 Mbytes and is meant to hold 60 minutes at CD quality. This is not a HIfi discussion about CD, just some facts. So the file size of an average track say 3 minutes is 3/60 x 650 Mbytes or 32.5 Mbytes. You have an analogue audio signal coming out of your auxiliary or tape output. This signal is an electrical copy of the audio waveform, running at the correct speed of the music or sound if it is from radio section. The wifi system is designed to transmit a digital signal which is made up of electrical pulses that are organised according to specific conventions, just as English uses letters organised into words according to conventions. These pulses are superimposed on the wifi carrier radio wave just like conventional radio and TV. If the wifi system is going to transmit the pulses correspond to the whole digital (computer) file it can do it all in one go. But three factors make this more difficult and require an extra stage. Firstly transferring 32.5 Mbytes at wifi speeds will take no more than 8 seconds and you want toplay it back over 180 seconds. So your receiver would need some kind of storage called buffering. Secondly the wifi network may be busy transferring other files to other devices on the network so the actual data is broken into smaller 'packets' and not sent all at once. Thirdly the source material may be spread out in time so may be sent in irregularly timed packets. Managing this last requirement is called streaming. With the right equipment all this is done automatically. The sonos device I linked to can accept the audio signal input and digitise it to suitable form and I think stream it onto the network. The input connectors ar listed as RCAphono so also suitable. Further it can join the network either though an ethernet cable or through the wifi as a bonafide device oon the network. This is why I asked you where the router is - you might be able to just plug it in. I have a Roberts radio with this capability and a Humax TV rcorder that I can stream recorded TV from to my pc or other devices on my network.

Exactly. Unfortuneately scientists are human and sometimes succumb to social or popular pressure about imprecise terms. Scientific proof is such an example.

Science does not go in for proof, that is lawyers or mathematicians. Science goes in for the best available 'fit' to known observations and is subject to change at any time due to new and (hopefully) better observations.

Perhaps I am wrong about this but it is my understanding that we are not conscious of out autonomic actions unless we choose to be. And choice is one of the differences between consciousness and intelligence.

+1

I think there are fundamental differences between autonomic/involuntary actions and deliberate actions made as a result of conscious thought (intelligence) Your genetic code can also be regarded as 'programming', its true. However as I understand this thread (hopefully intelligently 😄) it is all about intelligence, not autonomy. @exchemist I have added something to your thread on wifi

Yes my comments are meant in exactly that spirit. +1 Perhaps you know this, perhaps you don't; Engineering and other technical industries underwent a fundamental philosophical change in the second part of the 20th century. The emphasis moved from measuring the quantity concerned to measuring the error in that measurement so that it might be controlled. This is the point I am making. We see this is large ways and small ways as the various disciplines embedded errror resistant techniques into everyday practice. Checksums became standard. In surveying Did your triangle angles add up to 180 ? Did you read the angles on both faces? Did the sum of your foresights minus the sum of backsights equal the final level difference ? In structural and other engineering the limit state method of design was introduced. In information technology and coding science checksums were introduced. In concrete technology statistical control of materials was introduced into the mix design. In mecfhanical and electrical engineering redundant circuits and pathways were introduced into machine and equipment design and even whole network systems. Backup pilots, backup sytems, backup data storage backup backup and backup again. The concrete mix design is a good example of living with and controlling small errors as is limit state design. The surveying examples are good examples of minimising large errors.

You are correct I didn't spot that. +1 But this makes it worse than ever. If I read this correctly the AI has deliberately excluded certain errors despite being asked (I hope you did) about all errors. Blunders are errors and and often have the largest consequences such as getting on the wrong train or plane and ending up in Cape Town instead of Cairo. So what to do about them is especially important. The UK NHS for instance has a schedule reporting of medical errors including 'never' incidents which should never happen such as amputatiing the wrong leg or worse the leg of the wrong patient. Before retirement, my wife used to teach drug calculations. At the end of her courses students took an exam she prepared. She required a 100% correct pass mark and had a running battle with the managers who wanted to let staff loose on the wards with a lower one. At each such meeting she offered the exam (10 questions) as said "Here are the questions which of these would you accept your student to get wrong ?" she further pointed out that "Each of these questeions were based on real errors that had occurred and lead to the death or serious injury to the patient"

Gosh was that iNow or AiNow speaking ? 😄 I note the examples offered by technical members seem to be about 'business' not technicalities. In my experience accountants were the first to get decent calculators, then the first to get decent computers. Going back to technicality has anyone else experience of AutoCad and early Windows ?

Unfortunately your AI starts with a blunder, the same blunder that I am frequently warning new posters about here. The all embracing, blanket statement that can so eaaily be contradicted. Like many humans I understand the idea behind this statement, but it is just incorrect, though too many humans make similar ones. This demonstrates that the AI does not understand the words. A much better way to put the idea is to say that when we make a measurement, out measurement may actually be the correct result but we can not be certain of this. The trick or best we can do is to try to ensure that our measurement is the most probable result and further that the uncertainty, measured as an probability, is a quantifiable and acceptably low value.

And what does the fount of mystic wisdom say about blunders ? I note it has not mentioned them. Personally I would classify swansont's blueberry example as a blunder.

One possibility, depending upon your budget though you can get these s/h from _bay, is the explore the Sonos systems. https://www.sonos.com/en-us/guides/amp They have several useful products depending upon where your router etc is.

All failures are significant from something that is supposed to be ultra reliable if not actually infallible. It would be interesting if you would do some tests to find out what your AI knows about the theory of errors and what to do about them.

Rather you don't understand where I am coming from. There is a grain of truth in what you are describing, and I respect that, but my experience has been of a far wider set of scenarios.

No indeed. The second site I worked on (for the contractor) we had to supply the client with a calculator that had a square root button. The first site no one had a calculator. I did all the lab testing and results by hand. Since then I dont't think I have ever met an IT person who asks "What do you want or What do you need ?" I have generally come across many who say "This is what you must have" This latter attitude hardened as hardware gradually gave way to software.

Unlike you younger folks who so readily accept the latest bees knees in It long before it is needed and certainly well before any beta testing, I have seen so many 'new improved' washing powders ( sorry IT upgrades) come and go that it is boring to try to keep up. It is a great effort on my part to get something as I want it and annoying to find it changed by upgrades almost every time I log in. Once upon a time filled in lots of details here, but now I don't even know how to access these things, if it is still possible.

Depends how much time you had to devote to the subject. The admins here have several sites to attend to and, sad to say, SF is a minnow compared to some. So it falls to all of us members to try to make it attractive enough to be able to keep going, if we want the that.

Of course I forgot about bluetooth as I don't actually use it. This has a 10m range https://www.farnell.com/datasheets/2793383.pdf Bluetooth 2-in-1 Audio Transmitter & Receiver - BTTR2

My lounge amp is a Kenwood KA550 from that era, probably very similar. So from the spec sheet you have two tape outputs, one to DIN and one to RCAphono at 350millivolts RMS. A S/H Rotel RX403 is currently fetching around £139 on the net. It's lunch time now so I will look for suitable transponders this afternoon. I note there are a couple of new posts on the old thread that appeared after the move. Thank you swansont. Connections Number of inputs: Phono MM: 2 mV, 50 kOhm. Aux: 150 mV, 50 kOhm, max. 15 V Tape Play: 150 mV, 50 kOhm, max. 15 V Antenna FM (75/300 Ohm), MW (300 Ohm). Number of outputs: Tape Rec: 350 mV, 3.3 kOhm. Tape Rec DIN: 120 mV, 90 kOhm Headphones: 2 pairs of speakers

Well I don't know, as usual our politicians have f___ed up in their legal drafting. I find some measure of information useful as I try to pitch my responses to the correct level for the poster concerned. You may have seen me ask general innocuous quests for this purpose. Personally I distinguish with legitimate organisations I choose to deal with and those two rags who seem to thing I have nothing better to do than answer the phone calls. But the thing that really get my goat are those who ring up and then demand that I prove my identity, but get really irate if I say "Well you rang me, what proof of who you are can you offer ?"

What's wrong with your other thread ? Reported

The standard tape output will be about 100mv rms, the old audio inter equipment standard. I presume you amp is too old to have a digital audio output, either coax (RCA or Phono) or Optical. I use the optical (Toslink) with my telly. What is the make and model of the amp please? Note I have asked the mods to hive this off as its own thread as it is of more general and long term interest.

Like the way you have summed it up. +1 However there is still more than one way to skin a cat. I don't know anything about echemist's kitchen or the availability of UK mains sockets or where he wishes to place the speakers. So here are a few thoughts. Modern mains sockets often incorporate a USB outlet with sufficient power to power an ordinary speaker. Plugin usb adaptors with a 13A passthrough are also available if there is a shortage of three pin outlets. It may be cheaper to get remote usb speakers than comvert the Dentons. There are some pretty good ones available nowadays. There are also modular boxes available that could power the Dentons if you are set on keeping these. But modern solutions will take up less space. It may not be necessary or convenient to convert the audio signal to wifi. It is desireable to digitise it (though I would use a signal level not power level output eg the tape at the amplifier - I do this for the TV at home). The digitised signal may also be transmittable through the house mains. I have done this on lots of occasions. If wifi is necessary, this can be done using a cheap converter box designed to send a signal to wifiheadphones. Last year I set up one of these to send a signal from my daughter's electric piano to her wifiheadphones. @exchemist If you are interested in any of these ideas, I will see what details I can dig out.