Total harmonic distortion or THD is among the more regular little T.L.A.s (or Three letter acronyms) you will likely see in many manufacturers specifications. But precisely what is THD, is it all of that important and what level of THD is appropriate for HiFi and AV equipment?
In E&T audio rack in between the input stage and output stage of a hifi system there will be some noise and distortion brought to a transmission. A number of this distortion is produced through the circuits and physical elements introducing signal harmonics at double and triple the frequencies from the original signal. These added signals are technically called Harmonic Distortion. THD is a measure of 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 degree of each harmonic. EG: One amplifiers output at the 2nd harmonic could be higher than the output on the 3rd. Another could create equal levels on the 3rd and 5th. The two amps would sound very different yet could have the same measured overall THD.
In many hifi circuits including amplifiers and pre amps one should expect a value of under 1% THD because it is relatively easy to remove a lot of THD from amplifier circuits using various techniques. Unfortunately it is far harder to stop significant degrees of THD from being produced by the physical components of a setup such as the hifi speakers. Much higher amounts of THD are common in cheaper end speakers especially at higher volumes. Speakers with high levels THD have a tendency to cause “smearing” of audio, and bring about poor imaging and a “muddy” sound. The truth is one should test a component ideally within the room it is going to be found in and also at a volume level chances are it will commonly be heard at to ascertain when the system is suitable for purpose.
Your property cinema system or Topping DAC will need a specific level of cabling to maximise possible quality of sound of your system. Therefore you should improve your equipment with digital connections to every audio visual component to achieve the best listening experience. The fantastic 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 business 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 snjfol noticeable audio quality improvement via your audio visual system utilising the accessible digital connections.
Picking the best HDMI cables for your system is a reasonably straightforward process and there are some things that need considering before you purchase. Firstly, usually do not get brainwashed by retail shops that try to sell you the most costly cables since they would love you to invest as far as possible instead of knowing the needs or requirements of your house cinema setup – don’t be fooled.
Just what exactly HDMI Cable would be best suited for my home cinema system?
Firstly, the basic principle behind HDMI would be to transmit uncompressed digital data via 2 interfaces and digital data cables should be mainly compared by the standard of the constituents and manufacture. The Shanling audio available manage to focus on the more you would spend the better you accomplish – well stop and think again. Good quality manufacture of an affordable HDMI connector cable provides the same results as spending 10x or 20x more.