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 precisely what is THD, is it all that important and what degree of THD is appropriate for HiFi and AV equipment?
In audio reproduction in between the input stage and output stage of E&T audio rack there will be some noise and distortion brought to a signal. A few of this distortion is made by 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 really 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 degree of each harmonic. EG: One amplifiers output in the 2nd harmonic may be higher than the output on the 3rd. Another could create equal levels on the 3rd and 5th. The two amps would sound totally 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 as it is relatively easy to get rid of a substantial amount of THD from amplifier circuits using various techniques. Unfortunately it is far harder to stop significant degrees of THD from being produced by the physical components of a setup like the Hifi Audio. Greater amounts of THD are normal in cheaper end speakers especially at higher volumes. Speakers with higher levels THD often cause “smearing” of audio, and bring about poor imaging as well as a “muddy” sound. In fact one should test a component ideally within the room it is to be used in and at a volume level it is likely to commonly be heard at to ascertain if the method is acceptable for purpose.
Your house cinema system or audio visual system will need a certain amount of cabling to maximise the accessible audio quality of the system. Therefore you should improve your equipment with digital connections to each and every audio visual component to achieve the best listening experience. The great news is that you could obtain noticeable sound 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 show you how with inexpensive standard HDMI cable it is possible to achieve excellent results and enhance your home cinema listening experience and acquire noticeable quality of sound improvement via your audio visual system utilising the available digital connections.
Picking the best HDMI cables for your system is a fairly straightforward process and there are some things that need considering before buying. Firstly, do not get brainwashed by retail shops that make an effort to sell the eeogzu expensive cables simply 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 would be best designed for my home cinema system?
Firstly, the essential principle behind HDMI would be to transmit uncompressed digital data via 2 interfaces and digital data cables needs to be mainly compared by the caliber of the ingredients and manufacture. The Shanling amplifier available manage to focus on the more you may spend the greater you accomplish – well stop and think again. Good quality output of an inexpensive HDMI connector cable affords the same results as spending 10x or 20x more.