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 most manufacturers specs. But what exactly 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 hifi stand you will see a certain amount of noise and distortion brought to a signal. Some of this distortion is made from the circuits and physical elements introducing signal harmonics at double and triple the frequencies in the original signal. These added signals are technically known as Harmonic Distortion. THD is a way of measuring 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 consider the relative level of each harmonic. EG: One amplifiers output in the 2nd harmonic may be more than the output at the 3rd. Another could create equal levels on the 3rd and 5th. The 2 amps would sound totally different yet could have a similar measured overall THD.
Generally in most hifi circuits like amplifiers and pre amps you need to expect a value of less than 1% THD because it is relatively simple to eliminate a lot of THD from amplifier circuits using various techniques. Unfortunately it is actually far harder to prevent significant amounts of THD from being produced by the physical components of a setup including the Topping amplifier. Higher amounts of THD are typical in cheaper end speakers especially at higher volumes. Speakers with higher levels THD tend to cause “smearing” of audio, and bring about poor imaging along with a “muddy” sound. In reality one should test a component ideally within the room it is to be utilized in and also at a volume level chances are it will commonly be heard at to ascertain in the event the system is suitable for purpose.
Your house cinema system or audio visual system will need a certain amount of cabling to maximise the available quality of sound of your own system. Therefore you should improve your equipment with digital connections to every audio visual component to achieve the best listening experience. The good news is you can obtain noticeable audio quality improvements from your own home cinema system through using suitable digital HDMI interconnects (High Definition Multimedia Interface).
In this post 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 using your audio visual system utilising possible digital connections.
Finding the right HDMI cables for your own system is a reasonably straightforward process and there are several things to be considered before you buy. Firstly, usually do not get brainwashed by retail shops that attempt to sell you the eeogzu expensive cables simply because they want you to enjoy as much as possible rather than knowing the needs or requirements of your house cinema setup – don’t be fooled.
Just what exactly HDMI Cable might be best suited for my home cinema system?
Firstly, the basic principle behind HDMI is to transmit uncompressed digital data via 2 interfaces and digital data cables should be mainly compared by the caliber of the constituents and manufacture. The Shanling amplifier available seem to focus on the more you may spend the more you accomplish – well stop and you better think again. Good quality creation of an affordable HDMI connector cable provides the same results as spending 10x or 20x more.