Total harmonic distortion or THD is probably 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 degree of THD is acceptable for HiFi and AV equipment?
In audio reproduction between the input stage and output stage of E&T audio rack you will see a certain amount of noise and distortion exposed to a transmission. A few of this distortion is created through the circuits and physical elements introducing signal harmonics at double and triple the frequencies from the original signal. These added signals are technically referred to as Harmonic Distortion. THD is really a measure of the differential in between the input stages of the system as well as the audible extra signal at each harmonic. The THD calculation doesn’t think about the relative amount of each harmonic. EG: One amplifiers output on the 2nd harmonic might be greater than the output in the 3rd. Another could create equal levels in the 3rd and 5th. The two amps would sound completely different yet could have a similar measured overall THD.
Generally in most hifi circuits including amplifiers and pre amps one should expect a value of lower than 1% THD because it is relatively simple to remove a large amount of THD from amplifier circuits using various techniques. Unfortunately it is far harder to avoid significant levels of THD from being produced by the physical elements of a setup like the Hifi Audio. Greater levels of THD are common in cheaper end speakers especially at higher volumes. Speakers rich in levels THD have a tendency to cause “smearing” of audio, and lead to poor imaging along with a “muddy” sound. The truth is one should test a component ideally inside the room it is going to be found in and at a volume level it is likely to commonly be heard at to ascertain in the event the product is suitable for purpose.
Your property cinema system or audio visual system will require a specific level of cabling to maximise the accessible audio quality of your system. Therefore you should maximise your equipment with digital connections to every audio visual component to obtain the best listening experience. The very fantastic news is that you could obtain noticeable audio quality improvements from your home cinema system through using suitable digital HDMI interconnects (High-definition Multimedia Interface).
In this article we explode the market biased HDMI Cable Reviews and explain to you how with inexpensive standard HDMI cable it is possible to achieve excellent results and improve your home cinema listening experience and obtain noticeable quality of sound improvement via your audio visual system utilising possible digital connections.
Picking the best HDMI cables for your system is a reasonably straightforward process and there are several things to be considered before you purchase. Firstly, tend not to get brainwashed by retail shops that try to sell the eeogzu expensive cables simply because they would love you to spend as much as possible as opposed to knowing the needs or requirements of your home cinema setup – don’t be fooled.
So what HDMI Cable would be best best 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 standard of the constituents 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. Good quality output of an inexpensive HDMI connector cable provides the same results as spending 10x or 20x more.
