Total harmonic distortion or THD is one of the more regular little T.L.A.s (or Three letter acronyms) you are likely to see in most manufacturers specs. But precisely what 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 table there will be some noise and distortion introduced to a transmission. A number of this distortion is made 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 between the input stages in the system and the audible extra signal each and every harmonic. The THD calculation doesn’t consider the relative amount of each harmonic. EG: One amplifiers output in the 2nd harmonic might be higher than the output on the 3rd. Another could create equal levels in the 3rd and 5th. The 2 amps would sound very different yet could have a similar measured overall THD.
In most hifi circuits including amplifiers and pre amps one should expect a value of under 1% THD since it is relatively easy to remove a lot of THD from amplifier circuits using various techniques. Unfortunately it is far harder to prevent significant amounts of THD from being created by the physical elements of a setup like the Topping amplifier. Much higher amounts of THD are normal in cheaper end speakers especially at higher volumes. Speakers with high levels THD have a tendency to cause “smearing” of audio, and lead to poor imaging and a “muddy” sound. In fact you ought to test a component ideally inside the room it is to be utilized in and at a volume level chances are it will commonly be heard at to find out in the event the product is suitable for purpose.
Your property cinema system or audio visual system will demand a certain degree of cabling to maximise the available audio quality of the system. Therefore you will want to maximise your equipment with digital connections to each audio visual component to obtain the best listening experience. The fantastic news is that you can obtain noticeable audio quality improvements out of your home cinema system through using suitable digital HDMI interconnects (High Definition Multimedia Interface).
In this post we explode the business biased HDMI Cable Reviews and demonstrate how with inexpensive standard HDMI cable you are able to achieve excellent results and boost your home cinema listening experience and get noticeable audio quality improvement via your audio visual system utilising the accessible digital connections.
Choosing the best HDMI cables for your own system is a reasonably straightforward process and there are several things that need considering before you buy. Firstly, tend not to get brainwashed by retail shops that try to sell the eeogzu expensive cables since they would like you to invest as much as possible as opposed to knowing the needs or requirements of your property 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 is 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 Shanling amplifier available appear to focus on the more you may spend the better you accomplish – well stop and think again. High quality manufacture of an inexpensive HDMI connector cable provides the same results as spending 10x or 20x more.