Time domain characteristics of loudspeaker systems

Time domain characteristics is a speaker system very important indicators, evaluation of the speaker system of the representations of specialized terms are associated, for example: transient response, layered, sharpness, acoustic positioning and so on. On time domain characteristics, electroacoustic industry engineers have a lot of ARTEMIS, but only qualitative analysis and certain assumptions, even very authoritative United States electro-acoustic measurement system LMS, no time domain characteristics of test functionality. With the rapid development of computer technology, now on time domain characteristics of the speaker system has been able to quantitative testing and analysis, now test system in the West of the United States of DAAS, LAUD, and Italy and some of our most domestic test instrument with. Temporal characteristics of the test in the test environment has high requirements, computer testing system in a free environment of test results only as a reference. Time domain characteristics mainly covered the following aspects of the content first, step response step response is often said of transient, refers to the speaker system-infeed signals or slow to follow, of course, should be the sooner the better, and weak signal will also agile response to. Speaker systems-transient-response indicators of good or bad and many factors relevant to the case of driver and frequency circuits and components, and even lines are on it. Transient characteristics of a good speaker system "dynamic wind, static such as clock, accurately faithful reflect momentary change audio signal, the pursuit of fever frenzy" exhaustive "worlds will now" is actually a pair of speakers transient characteristics of a pursuit. Transient is speed, speed of factors not only speaker systems, audio sources are equally important, amplifier; silver wire and copper on audio-current transfer speed also varies considerably (not just the resistance values are different so simple). As copper and brass wire (copper alloy), of copper wire (pure copper wire), the number N of copper wire (n is the first English 9 letters, such as 6N represent copper content 99.9999%), Crystal copper wire, single wire, stranded wire, and even more shares how special stranded wire, variety, long tale. All speed and tone on the (speed will decide the timbre of the main ingredients), danji to Stoner speed faster, from analog to a digital circuit speed and fast, silver line speed not catch is not inner resistance of carbon fiber cables, cable transmission, of course, be slower than fiber, it-shoot faster to what extent? digital circuit very advanced today someone stood up and said: "digital taste of baldly, rustic danji fun much (danji slower). ", Great CEOs said, sound really good fun. For equipment fast or slow this problem actually did not dispute the need, as long as you like it was good. But for a speaker system is concerned, I personally prefer fast some of that may be a "occupational diseases", more emphasis on testing indicators, on a small number of people agree that the music taste very strong "but time domain characteristics not good speaker system. This so-called music taste very strong thing may listen to a few slow song some special feeling, but overall performance too got off to a question mark on it. Music Unlimited, not simple in what strings, percussion, brass, lead vocal and orchestral ... ... The world's peoples have their own music, what is the "music taste"? I think honestly do of electro-acoustic indicators, a faithful restoration-infeed signal, a signal hurry off sound, no signal immediately shut up, without personality is good. Transient effect speaker system is the leading cause of damping, it includes driver's electric damper and damping mechanical, frequency network of acoustic damping, box, even communication medium damping of damping (experienced readers might have such a feeling, a single set of equipment in the sunny and rainy day air humidity different State sound will change a little). Low-impedance speaker system is the international popular practices, analysis of many internationally renowned speaker system, it is not difficult to see the masters are to improve the speaker system of the transient response and great article to reduce damping. Denmark's wafer speaker name factory has several new units have adopted copper shorting ring structure, its intention is to improve the range of high-frequency impedance, in fact also reduce electric damper, scallops warheads that treble unit (forgot the model, the little whirlwind in high-end products used) is one of the representatives; PMC famous Octopus bass unit selection PU material do hanging edge University colours to reduce damping, readers and friends who are interested to hear that the low frequency of transient response is a very, very fun to listen to drum; rain early eye of after several name box designed to short down-tube (only about 2cm), effectively reduces resistance, access to the excellent transient response and, of course, unit low damping material cone loudspeaker with PP, low damping butyl rubber hanging side also go a long way, readers can also go to listen to the original high transient response of the speaker system is so fidelity and vivid. For high-quality, crossover network selection of capacitors, aim low loss and high speeds, air core inductor to reduce electric damper, these are improved transient response means that the speaker system in the bass range frequency response guaranteed of even less inductance, and is express, its results are greatly improved transient response, of which there are the representatives of the music-rich 2188, BMB, Zhang Bai-LEUNG has a product it is express, must have good bass, unfortunately not respectful listening. Effect of transient response of many factors, such as driver's supported tablets, magnetic circuit design, the sound-absorbing materials such as tank, it is difficult to disagree more.