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#11
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Walkman, at 30, a mystery to teen
On Jul 2, 7:44*am, dave wrote:
Sad. *You can't hear much above 10 K; *why do you care about 24? You can buy a credible MP3 player for $20 that'll run circles around your POS Nakamichi. LOL! LMFAO! HEIL HITLER Professor DaviD! ROTFLMAO! |
#12
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Walkman, at 30, a mystery to teen
"dave" wrote in message m... Sad. You can't hear much above 10 K; why do you care about 24? You can buy a credible MP3 player for $20 that'll run circles around your POS Nakamichi. 1) One cares about whether one can get 24KHz reproduction out of a tape machine (or any other reproducer) beause the flat response curve at the high end actually affects the sound at lower frequencies (the characteristics of musical instruments are that many carry large numbers of harmonics, which, even if you cannot hear the harmonic itself, would change the intrinsic sound were they not there at all) 2) There is NO mp3 player that can as accurately reproduce a complex audio waveform as well as a high end cassette machine. I don't care how many samples you take of a complex waveform with an ADC/DAC system, the resultant playback waveform will never represent the original analog waveform as well as a high end analog device. Even a simple 1000 Hz sine wave will not come out as a pure sine wave after digital conversion, it will be a series of stepped square waves. You may not be able to tell the difference with your ear, as long as there are enough of those little steps, but that's not the point. The point is, it will not "run circles around" a high end analog device. |
#13
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Walkman, at 30, a mystery to teen
On 07/02/09 15:48, Brenda Ann wrote:
2) There is NO mp3 player that can as accurately reproduce a complex audio waveform as well as a high end cassette machine. I don't care how many samples you take of a complex waveform with an ADC/DAC system, the resultant playback waveform will never represent the original analog waveform as well as a high end analog device. Even a simple 1000 Hz sine wave will not come out as a pure sine wave after digital conversion, it will be a series of stepped square waves. You may not be able to tell the difference with your ear, as long as there are enough of those little steps, but that's not the point. The point is, it will not "run circles around" a high end analog device. If you take a look at a 1khz square wave after digital conversion, you'll see ringing at both ends of the flat top. You'll see that same ringing wherever there is a hard rise or fall. Is it audible? Oh yeah. More so on a naked square wave. Less so in complex music. But you can hear it. You'll see this wherever there is hard digital filtering, such as anti-aliasing on CD players. You'll see it where there is copious amount of data loss, as in MP3. An MP3, at it's best is a 4:1 data loss. The songs on iTunes and elsewhere are mostly 10:1 data loss. Sometimes more, sometimes less. Noise may be reduced, but it's hardly high fidelity audio. And though cassettes have their many flaws, a properly set up Nak will have more noise, but far less digital artifacting and zero data loss than any MP3. |
#14
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Walkman, at 30, a mystery to teen
I have a few old reel to reel tape recorders/players.Two of them were
made by Webcor, they look just alike each other.One of my other reel to reel tape recorders/player is larger than the Webcors and it has three speeds.I own several other old much smaller reel to reel tape recorders/players too.I bought all of them at thrift stores and flea markets years and years ago. cuhulin |
#15
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Walkman, at 30, a mystery to teen
On Jul 2, 3:48*pm, "Brenda Ann" wrote:
I don't care how many samples you take of a complex waveform with an ADC/DAC system, the resultant playback waveform will never represent the original analog waveform as well as a high end analog device. Even a simple 1000 Hz sine wave will not come out as a pure sine wave after digital conversion, it will be a series of stepped square waves. You may not be able to tell the difference with your ear, as long as there are enough of those little steps, but that's not the point. The point is, it will not "run circles around" a high end analog device. Nonsense. Format 1 bit DSD (Direct Stream Digital) Sampling frequency 2.8224 MHz Dynamic range 120 dB Frequency range 20 Hz - 50 kHz The SACD format is capable of delivering a dynamic range of 120 dB from 20 Hz to 20 kHz and an extended frequency response up to 100 kHz! Try to duplicate that with any "high-end analog device". Quantum physicists state the universe is digital. It is your inferior sensory organs which can not resolve the digital universe. Get over it! Radio is the enemy - ANALog is dead! |
#16
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Walkman, at 30, a mystery to teen
"0baMa0 Tse Dung" wrote in message ... On Jul 2, 3:48 pm, "Brenda Ann" wrote: I don't care how many samples you take of a complex waveform with an ADC/DAC system, the resultant playback waveform will never represent the original analog waveform as well as a high end analog device. Even a simple 1000 Hz sine wave will not come out as a pure sine wave after digital conversion, it will be a series of stepped square waves. You may not be able to tell the difference with your ear, as long as there are enough of those little steps, but that's not the point. The point is, it will not "run circles around" a high end analog device. Nonsense. Format 1 bit DSD (Direct Stream Digital) Sampling frequency 2.8224 MHz Dynamic range 120 dB Frequency range 20 Hz - 50 kHz The SACD format is capable of delivering a dynamic range of 120 dB from 20 Hz to 20 kHz and an extended frequency response up to 100 kHz! Try to duplicate that with any "high-end analog device". Sorry. Apples and oranges. I once built a two transistor pre-amp that was flat from 10 Hz to over 2 MHz. Thing is, it didn't have all that good of a distortion figure. Digitally reproduced analog waveforms have distortion. There is simply no way around it. You cannot make a true, perfect sine waveform out of a bunch of square waves. It can't be done. Further, the universe is most certainly not digital. About the closest thing you get to digital in the universe is a hydrogen atom. But even the radio frequency wave output from a hydrogen atom is a sine wave: analog. Digital can only be a representation, in various degrees of fidelity, of an analog signal. |
#17
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Walkman, at 30, a mystery to teen
Brenda Ann wrote:
"0baMa0 Tse Dung" wrote in message ... On Jul 2, 3:48 pm, "Brenda Ann" wrote: I don't care how many samples you take of a complex waveform with an ADC/DAC system, the resultant playback waveform will never represent the original analog waveform as well as a high end analog device. Even a simple 1000 Hz sine wave will not come out as a pure sine wave after digital conversion, it will be a series of stepped square waves. You may not be able to tell the difference with your ear, as long as there are enough of those little steps, but that's not the point. The point is, it will not "run circles around" a high end analog device. Nonsense. Format 1 bit DSD (Direct Stream Digital) Sampling frequency 2.8224 MHz Dynamic range 120 dB Frequency range 20 Hz - 50 kHz The SACD format is capable of delivering a dynamic range of 120 dB from 20 Hz to 20 kHz and an extended frequency response up to 100 kHz! Try to duplicate that with any "high-end analog device". Sorry. Apples and oranges. I once built a two transistor pre-amp that was flat from 10 Hz to over 2 MHz. Thing is, it didn't have all that good of a distortion figure. Digitally reproduced analog waveforms have distortion. There is simply no way around it. You cannot make a true, perfect sine waveform out of a bunch of square waves. It can't be done. Yes, but the error from a perfect sine wave may be extremely small. In fact much lower than the noise in most analog recording methods. Further, the universe is most certainly not digital. About the closest thing you get to digital in the universe is a hydrogen atom. But even the radio frequency wave output from a hydrogen atom is a sine wave: analog. Digital can only be a representation, in various degrees of fidelity, of an analog signal. The same can be said for analog recording systems. They also introduce noise and distortion into the analog signal. |
#18
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Walkman, at 30, a mystery to teen
Those cats with the LOUD sound systems in their cars,,,, just think what
that is doing to their hearing. cuhulin |
#19
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Walkman, at 30, a mystery to teen
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#20
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Walkman, at 30, a mystery to teen
In article
, 0baMa0 Tse Dung wrote: On Jul 2, 3:48*pm, "Brenda Ann" wrote: I don't care how many samples you take of a complex waveform with an ADC/DAC system, the resultant playback waveform will never represent the original analog waveform as well as a high end analog device. Even a simple 1000 Hz sine wave will not come out as a pure sine wave after digital conversion, it will be a series of stepped square waves. You may not be able to tell the difference with your ear, as long as there are enough of those little steps, but that's not the point. The point is, it will not "run circles around" a high end analog device. Nonsense. Format 1 bit DSD (Direct Stream Digital) Sampling frequency 2.8224 MHz Dynamic range 120 dB Frequency range 20 Hz - 50 kHz The SACD format is capable of delivering a dynamic range of 120 dB from 20 Hz to 20 kHz and an extended frequency response up to 100 kHz! Try to duplicate that with any "high-end analog device". Quantum physicists state the universe is digital. It is your inferior sensory organs which can not resolve the digital universe. Get over it! Radio is the enemy - ANALog is dead! The universe is analog not digital so you get over it. Quantum physics stating the universe is digital is an oversimplification at best and I'm being very generous. By the way, you have already been assimilated by the analog borg. Radio is my hobby. -- Telamon Ventura, California |
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