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 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 in between the input stage and output stage of hifi racks you will see a certain amount of noise and distortion brought to a transmission. Some 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 called Harmonic Distortion. THD is a measure of the differential between the input stages of the system and also the audible extra signal at every harmonic. The THD calculation doesn’t consider the relative amount of each harmonic. EG: One amplifiers output at the 2nd harmonic may be higher than the output at the 3rd. Another could create equal levels at the 3rd and 5th. The 2 amps would sound totally different yet could have the same measured overall THD.
Generally in most hifi circuits such as amplifiers and pre amps one should expect a worth of under 1% THD since it is easy to get rid of a large amount of THD from amplifier circuits using various techniques. Unfortunately it really is far harder to prevent significant levels of THD from being produced by the physical elements of a setup such as the Topping DAC. Higher levels of THD are common in cheaper end speakers especially at higher volumes. Speakers with higher levels THD tend to cause “smearing” of audio, and result in poor imaging as well as a “muddy” sound. In fact you need to test a component ideally inside the room it is to be found in and at a volume level chances are it will commonly be heard at to find out if the method is suitable for purpose.
Your home cinema system or audio visual system will demand a certain amount of cabling to maximise the accessible quality of sound of your system. Therefore you will want to maximise your equipment with digital connections to each audio visual component to get the best listening experience. The good news is that you could obtain noticeable quality of sound improvements out of your home cinema system through using suitable digital HDMI interconnects (High-definition Multimedia Interface).
In the following paragraphs we explode the market biased HDMI Cable Reviews and demonstrate how with inexpensive standard HDMI cable it is possible to achieve excellent results and enhance your home cinema listening experience and obtain noticeable quality of sound improvement using your audio visual system utilising the accessible digital connections.
Finding the right HDMI cables for your system is a pretty straightforward process and there are several things to be considered before buying. Firstly, tend not to get brainwashed by retail shops that attempt to sell the eeogzu expensive cables simply because they want you to enjoy as far as possible instead of understanding the needs or requirements of your home cinema setup – don’t be fooled.
So what HDMI Cable would be best suited for my home cinema system?
Firstly, the essential principle behind HDMI is always to transmit uncompressed digital data via 2 interfaces and digital data cables needs to be mainly compared by the caliber of the ingredients and manufacture. The Shanling amplifier available appear to focus on the more you may spend the greater you accomplish – well stop and think again. High quality creation of a cheap HDMI connector cable affords the same results as spending 10x or 20x more.