Total harmonic distortion or THD is one of the more regular little T.L.A.s (or Three letter acronyms) you will likely see in most manufacturers specifications. But what exactly is THD, could it be all of that important and what degree of THD is acceptable for HiFi and AV equipment?
In hifi racks in between the input stage and output stage of a hifi system there will be some noise and distortion brought to a signal. A number of this distortion is made from the circuits and physical elements introducing signal harmonics at double and triple the frequencies from the original signal. These added signals are technically called Harmonic Distortion. THD is a measure of the differential in between the input stages in the system and the audible extra signal each and every harmonic. The THD calculation doesn’t think about the relative amount of each harmonic. EG: One amplifiers output at the 2nd harmonic might be greater than the output at the 3rd. Another could create equal levels on the 3rd and 5th. The two amps would sound completely different yet could have the identical measured overall THD.
In many hifi circuits such as amplifiers and pre amps you need to expect a price of lower than 1% THD since it is relatively easy to get rid of a large amount of THD from amplifier circuits using various techniques. Unfortunately it is far harder to stop significant amounts of THD from being made by the physical components of a setup like the hifi speakers. Greater degrees of THD are typical in cheaper end speakers especially at higher volumes. Speakers rich in levels THD often cause “smearing” of audio, and bring about poor imaging and a “muddy” sound. The truth is you ought to test a component ideally inside the room it is going to be used in as well as at a volume level it is likely to commonly be heard at to ascertain in the event the method is appropriate for purpose.
Your home cinema system or Topping DAC will need a certain amount of cabling to maximise the accessible quality of sound of your system. Therefore you should maximise your equipment with digital connections to each audio visual component to get the best listening experience. The particular fantastic news is you can obtain noticeable audio quality improvements from your home cinema system through using suitable digital HDMI interconnects (High Definition Multimedia Interface).
In the following paragraphs we explode the industry biased HDMI Cable Reviews and demonstrate how with inexpensive standard HDMI cable you can achieve excellent results and enhance your home cinema listening experience and snjfol noticeable audio quality improvement using your audio visual system utilising the available digital connections.
Choosing the best HDMI cables for your own personel system is a reasonably straightforward process and there are several things that need considering before buying. Firstly, do not get brainwashed by retail shops that make an effort to sell you the most expensive cables because they would like you to enjoy whenever possible rather than comprehending the needs or requirements of your house cinema setup – don’t be fooled.
What exactly HDMI Cable might be best designed for my home cinema system?
Firstly, the essential principle behind HDMI is to transmit uncompressed digital data via 2 interfaces and digital data cables ought to be mainly compared by the quality of the constituents and manufacture. The Shanling CD player available appear to focus on the more you would spend the better you accomplish – well stop and think again. Top quality output of a cheap HDMI connector cable affords the same results as spending 10x or 20x more.