Total harmonic distortion or THD is one of the more regular little T.L.A.s (or 3 letter acronyms) you are likely to see in many manufacturers specs. But what exactly is THD, is it all that important and what level of THD is acceptable for HiFi and AV equipment?
In audio reproduction in between the input stage and output stage of hifi audio rack there will be a certain amount of noise and distortion exposed to a signal. A few of this distortion is made from 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 measure of the differential involving the input stages of the system as well as the audible extra signal at every harmonic. The THD calculation doesn’t take into account the relative level of each harmonic. EG: One amplifiers output on the 2nd harmonic might be higher than the output in the 3rd. Another could create equal levels on the 3rd and 5th. The 2 amps would sound totally 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 lower than 1% THD since it is relatively simple to eliminate a lot of THD from amplifier circuits using various techniques. Unfortunately it is actually far harder to stop significant amounts of THD from being created by the physical aspects of a setup like the Topping NX4 DSD. Much higher amounts of THD are common in cheaper end speakers especially at higher volumes. Speakers with higher levels THD tend to cause “smearing” of audio, and result in poor imaging along with a “muddy” sound. The truth is you ought to test a component ideally inside the room it is going to be used in and also at a volume level it is likely to commonly be heard at to ascertain when the method is appropriate for purpose.
Your home cinema system or audio visual system will demand a certain level of cabling to maximise the available sound quality of your own system. Therefore you will want to maximise your equipment with digital connections to every audio visual component to get the best listening experience. The very good news is that you could obtain noticeable quality of sound improvements from your home cinema system through using suitable digital HDMI interconnects (High-definition Multimedia Interface).
In this article we explode the industry biased HDMI Cable Reviews and explain to you how with inexpensive standard HDMI cable it is possible to achieve excellent results and boost your home cinema listening experience and obtain noticeable quality of sound improvement through your audio visual system utilising the available digital connections.
Choosing the best HDMI cables for your own system is a reasonably straightforward process and there are some things that need considering before buying. Firstly, do not get brainwashed by retail shops that try to sell the eeogzu expensive cables simply because they want you to enjoy whenever possible as opposed to understanding the needs or requirements of your home cinema setup – don’t be fooled.
Just what exactly HDMI Cable would be best suited 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 ought to be mainly compared by the quality of the ingredients and manufacture. The HiFi Audio available seem to focus on the more you would spend the greater you accomplish – well stop and you better think again. Top quality output of an affordable HDMI connector cable affords the same results as spending 10x or 20x more.