Total harmonic distortion or THD is probably the more regular little T.L.A.s (or Three letter acronyms) you will likely see generally in most manufacturers specifications. But what exactly is THD, will it be all of that important and what degree of THD is appropriate for HiFi and AV equipment?
In E&T audio rack between the input stage and output stage of the hifi system you will see a certain amount of noise and distortion exposed to a transmission. A number of this distortion is created from the circuits and physical elements introducing signal harmonics at double and triple the frequencies of the original signal. These added signals are technically referred to as Harmonic Distortion. THD is a measure of the differential between the input stages in the system as well as the audible extra signal each and every harmonic. The THD calculation doesn’t think about 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 very different yet could have the same measured overall THD.
In most hifi circuits like amplifiers and pre amps you ought to expect a price of under 1% THD because it is relatively easy to eliminate a large amount of THD from amplifier circuits using various techniques. Unfortunately it is actually far harder to prevent significant degrees of THD from being produced by the physical components of a setup including the hifi speakers. Higher levels 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 as well as a “muddy” sound. In fact you ought to test a component ideally within the room it will be used in and also at a volume level it is likely to commonly be heard at to ascertain in the event the method is suitable for purpose.
Your house cinema system or Topping NX4 DSD will require a specific level of cabling to maximise the accessible audio quality of the system. Therefore you will need to maximise your equipment with digital connections to each and every audio visual component to get the best listening experience. The very great news is that you can obtain noticeable sound quality improvements out of 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 snjfol noticeable quality of sound improvement through your audio visual system utilising the accessible digital connections.
Choosing the best HDMI cables for your system is a pretty straightforward process and there are a few things that need considering before you purchase. Firstly, tend not to get brainwashed by retail shops that try to sell you the most costly cables since they would like you to invest as much as possible as opposed to knowing the needs or requirements of your home cinema setup – don’t be fooled.
What exactly HDMI Cable might 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 ought to be mainly compared by the quality of the components and manufacture. The Shanling audio available appear to focus on the more you may spend the better you accomplish – well stop and think again. Good quality manufacture of a cheap HDMI connector cable provides the same results as spending 10x or 20x more.