The Audio Frontier is All Abuzz These Days With The Pleasure Possible Though HDMI, USB, FireWire® and Ethernet Connections. However, These Current Generation Digital Technologies Are Only Part of the Story, Just As The Challenge of Designing, Manufacturing and Choosing The Best Analog Interconnections and Speaker Cables IS AS Important Ever. The S / P-DIF (Sony® Philips Digital Interface), Which Arrived in 1983 Along with the cd, is Still Very Much a part of our World Today. S / P-Dif Is Transmitted Through Digital Coax and Toslink Fiber Optics (EIA-J), Making Them Still Some of the Most Important Cables in Electronic Entertainment.
While, Thanks to HDMI, Toslink Is Not NO Often Used To Connect A DVD Player To An A / V Receiver, Toslink Connectors Are Common On Cable-Boxes, TV Sets, Subwoofers, All Sorts of Products. And now, the 3.5mm Mini Optical Connector, Also Somewhat Incorrectly Known As Mini-Toslink, Is Everywhere ... from the 3.5mm Dual-Purpose Headhone Jack On A Mac Laptop, to Inputs on Some of the Portable Finest.
For These Many Reasons, AudioSet has Refined and Renewed Our Line of Serious High Performance Optilink Cables. ALL MODELS AND ALL LENGTHS ARE NOW Available Toslink to Toslink and Toslink To 3.5mm Mini optical.
When the question is "How Can Fiber-Optic Cable Change The Sound?" ... The Answer is Easier to Explain Than for Almost Any Other Type of Cable. IF The Light Source Were A Coherent Laser, Firing Into a Vacuum, All The Light Would Stay Straight, Arrow at Its Destination at The Same Time. Even If the LED Light Source in a Toslink System Weere Coherent, The Light Entering A Fiber-Optic Cable is Scattered and Impurities in The Fiber. This Can Be Measured As a Loss of Amplitude ... Purpose Amplitude is not the problem, 50% True Loss would have no effect on soud quality.
The problem is that the dispersed Light Does get through the cable, goal only after it has taken langue Path, like a pool ball bouncing off the side-rails, causing it to arrive late. This delayed part of the signal prevent the computer charging with decoding this information from beeing able to decode properly, or even at all. The Inability to Decode Shows First at Higher Frequencies (Not Audio Frequencies, This Is A Mono Stream of Digital Audio Information), So Reduced Bandwidth Is A Measurable Signature Of Light Being Dispersed by a fiber. The Punch Line: The Les dispersion in the Fiber, The Les Distortion in the final Analog audio signal presented to our ears.
THERE IS ANOTHER SERIOUS DISPERSAL MECHANISM IN THE TOSLINK SYSTEM. The Fiber is a relatively huge 1.0mm In Diameter, and The LED Light Source Is Also Relatively Large, Spraying Light In Into The Fiber at Many Different angles. Even If the Fiber Were Absolutely Perfect, The Signal Willd Be Spread Across Time Because Light Rays Entering at Different Angles Take Different Length Paths and Arrivals with different Amounts of Delay.
The Almost Complete Solution To This Problem Is To Use Hundreds of Much Smaller Fibers in A 1.0mm bundle. Each Fiber Is Limited AS to What angle of Input Can Enter The Fiber, There is far les variety, and far less dispersion over time. This Narrow-Aperture Effect Is Similar To How a Pin-Hole Camera Can Take A Picture Without A Lens ... by Letting in Light At Only A Very Limited Range of Angles, a Picture Can Be Taken, Whereeas Removing The Lens from A Wider Aperture Would Make Photography Impossible. Less Light Gets Through A Multi-Fiber Cable, Goal The Light That Does Get Inte The Fiber Comes Out Within in a Much Smaller Time-Envelope.
So there is one problem, the dispersion of light across time ... and Two Avenues Towards A Better Result: Les dispersion in the fiber (Better Polymers and Ultimately Quartz), and less dispersion by Filtering the input angle. How simple is that! Listen and Enjoy.
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