Total harmonic distortion or THD is among the more regular little T.L.A.s (or 3 letter acronyms) you are likely to see in many manufacturers specifications. But exactly what is THD, is it all that important and what amount of THD is appropriate for HiFi and AV equipment?
In audio reproduction between the input stage and output stage of hifi audio rack there will be some noise and distortion introduced to a transmission. Some of this distortion is produced by the circuits and physical elements introducing signal harmonics at double and triple the frequencies of the original signal. These added signals are technically called Harmonic Distortion. THD is actually a way of measuring the differential in between the input stages from the system as well as 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 may be greater than the output in the 3rd. Another could create equal levels in the 3rd and 5th. The two amps would sound totally different yet could have a similar measured overall THD.
Generally in most hifi circuits such as amplifiers and pre amps you need to expect a price of less than 1% THD because it is easy to get rid of a lot of THD from amplifier circuits using various techniques. Unfortunately it really is far harder to prevent significant levels of THD from being created by the physical components of a setup including the Hifi Audio. Much higher amounts of THD are normal in cheaper end speakers especially at higher volumes. Speakers rich in levels THD often cause “smearing” of audio, and result in poor imaging along with a “muddy” sound. In reality you need to test a component ideally in the room it is going to be found in and also at a volume level chances are it will commonly be heard at to find out if the method is acceptable for purpose.
Your house cinema system or audio visual system will require a certain level of cabling to maximise the available audio quality of your own system. Therefore you will need to maximise your equipment with digital connections to each and every audio visual component to obtain the best listening experience. The fantastic news is that you can obtain noticeable sound quality improvements out of your home cinema system through using suitable digital HDMI interconnects (Hi-def Multimedia Interface).
In this post we explode the market biased HDMI Cable Reviews and show you how with inexpensive standard HDMI cable it is possible to achieve excellent results and enhance your home cinema listening experience and obtain noticeable audio quality improvement using your audio visual system utilising possible digital connections.
Finding the right HDMI cables for your own personel system is a pretty straightforward process and there are several things that need considering before you purchase. Firstly, do not get brainwashed by retail shops that make an effort to sell you the eeogzu expensive cables simply because they would like you to spend as far as possible as opposed to understanding the needs or requirements of your property cinema setup – don’t be fooled.
So what HDMI Cable might be best best for my home cinema system?
Firstly, the fundamental principle behind HDMI is to transmit uncompressed digital data via 2 interfaces and digital data cables needs to be mainly compared by the quality of the constituents and manufacture. The Shanling TEMPO available seem to focus on the more you spend the better you achieve – well stop and reconsider. Top quality manufacture of an inexpensive HDMI connector cable provides the same results as spending 10x or 20x more.