Total harmonic distortion or THD is one of 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 racks there will be a certain amount of noise and distortion brought to a signal. A few of this distortion is created through 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 really a measure of the differential in between the input stages in the system and the audible extra signal at every harmonic. The THD calculation doesn’t consider the relative amount of each harmonic. EG: One amplifiers output on the 2nd harmonic may be greater than the output in the 3rd. Another could create equal levels at the 3rd and 5th. Both amps would sound completely different yet could have a similar measured overall THD.
Generally in most hifi circuits like amplifiers and pre amps you ought to expect a worth of lower than 1% THD because it is easy to remove a large amount of THD from amplifier circuits using various techniques. Unfortunately it is actually far harder to prevent significant levels of THD from being made by the physical elements of a setup such as the Topping DAC. Much higher levels of THD are normal in cheaper end speakers especially at higher volumes. Speakers rich in levels THD often cause “smearing” of audio, and lead to poor imaging and a “muddy” sound. The truth is you need to test a component ideally in the room it is to be found in and at a volume level chances are it will commonly be heard at to ascertain when the product is suitable for purpose.
Your house cinema system or audio visual system will need a particular level of cabling to maximise the available sound quality of your system. Therefore you will want to improve your equipment with digital connections to every audio visual component to obtain the best listening experience. The particular great news is that you could obtain noticeable sound quality improvements from your home cinema system through using suitable digital HDMI interconnects (High-definition Multimedia Interface).
In the following paragraphs we explode the business biased HDMI Cable Reviews and explain to you how with inexpensive standard HDMI cable you can achieve excellent results and enhance your home cinema listening experience and acquire noticeable audio quality improvement through your audio visual system utilising possible digital connections.
Finding the right HDMI cables for your system is a reasonably straightforward process and there are some things to be considered before buying. Firstly, tend not to get brainwashed by retail shops that try to sell the eeogzu expensive cables because they want you to enjoy as much as possible rather than understanding the needs or requirements of your home cinema setup – don’t be fooled.
So what HDMI Cable might be best best for my home cinema system?
Firstly, the basic principle behind HDMI is to transmit uncompressed digital data via 2 interfaces and digital data cables ought to be mainly compared by the standard of the constituents and manufacture. The Shanling amplifier available seem to focus on the more you spend the more you achieve – well stop and you better think again. High quality output of an affordable HDMI connector cable gives the same results as spending 10x or 20x more.