Total harmonic distortion or THD is probably the more regular little T.L.A.s (or Three letter acronyms) you are likely to see in most manufacturers specifications. But what exactly is THD, is it all that important and what level of THD is appropriate for HiFi and AV equipment?
In audio reproduction in between the input stage and output stage of hifi audio rack you will see some noise and distortion introduced to a signal. A few of this distortion is produced through the circuits and physical elements introducing signal harmonics at double and triple the frequencies in the original signal. These added signals are technically known as Harmonic Distortion. THD is a measure of the differential between the input stages in the system and also the audible extra signal at each harmonic. The THD calculation doesn’t think about the relative amount of each harmonic. EG: One amplifiers output in the 2nd harmonic could be greater than the output at the 3rd. Another could create equal levels on the 3rd and 5th. Both amps would sound very different yet could have the identical measured overall THD.
In most hifi circuits like amplifiers and pre amps you ought to expect a value of less than 1% THD since it is relatively simple to eliminate a lot of THD from amplifier circuits using various techniques. Unfortunately it is far harder to avoid significant levels of THD from being made by the physical elements of a setup such as the Topping amplifier. Greater levels of THD are common in cheaper end speakers especially at higher volumes. Speakers rich in levels THD tend to cause “smearing” of audio, and lead to poor imaging along with a “muddy” sound. In fact you ought to test a component ideally within the room it will be used in and at a volume level it is likely to commonly be heard at to ascertain in the event the method is suitable for purpose.
Your property cinema system or audio visual system will need a particular degree of cabling to maximise the available quality of sound of your system. Therefore you will want to maximise your equipment with digital connections to every audio visual component to achieve the best listening experience. The great news is that you can obtain noticeable quality of sound improvements from your own home cinema system through using suitable digital HDMI interconnects (Hi-def Multimedia Interface).
In the following paragraphs we explode the market biased HDMI Cable Reviews and demonstrate how with inexpensive standard HDMI cable it is possible to achieve excellent results and enhance your home cinema listening experience and acquire noticeable sound quality improvement via your audio visual system utilising the available digital connections.
Finding the right HDMI cables for your own personel system is a fairly straightforward process and there are several things that need considering before you buy. Firstly, usually do not get brainwashed by retail shops that make an effort to sell the eeogzu expensive cables since they would like you to enjoy as much as possible as opposed to understanding the needs or requirements of your home cinema setup – don’t be fooled.
So what HDMI Cable might be best suited for my home cinema system?
Firstly, the basic principle behind HDMI is always to transmit uncompressed digital data via 2 interfaces and digital data cables should be mainly compared by the quality of the components and manufacture. The HiFi Audio available manage to focus on the more you would spend the greater you accomplish – well stop and think again. Top quality output of an affordable HDMI connector cable affords the same results as spending 10x or 20x more.