Speaker Volume

Can determine the distribution of sound fine point , a small roughness more . Advanced than the average number of ordinary vehicles car horn speakers. Installation location often affect car stereo speakers sound effects , speakers will produce different effects in different mounting positions the same two companies , the installation bookshelf speaker location must be high-class cars stereo speakers through a variety of tests to determine it. By the number of speakers with the correct installation experience and skills to cope with the mounting position of different bandwidth speakers , good direction , adjust power amplifier compatible technologies , and ultimately to achieve good results . Installation layout from a professional point of view on the Hi - Fi direct impact effect , with high-fidelity sound excellent balance ( feeling front sound effects ) through the front sound field effect , the position of the sound field ( the effects of different sources in the field, can be positioned accuracy ) , the sense of Bluetooth Speaker space ( spatial acoustics feel about bass response ) , playback effects ( reduction fidelity sound ) , ( voice, tone and image quality results ) audio-visual effects , respectively. Good acoustic positioning ( staging ) is largely dependent on the set before the cab cab tweeter and midrange unit provided around . Because the human auditory system is mainly in the audio portion of the sound wave reaches has left ear position of the sound source rate . Pillars of a tweeter and a speaker mounted on the front near the middle point of installation only achieve coordination frequently matched to form a coherent , coordinated sound source . Taking into account the audience's left and right stereo angle is also stereo speakers , as the case may be, the position of double counting precise adjustments to make to achieve a good car audio sound field positioning. Therefore , the effect of the car speakers for car stereo layout is very important.

Speaker parameters

Refers to the speaker using a dedicated test system to test out various performance parameters of the bookshelf computer speaker specific value of its common parameters include :. Z, Fo, η0, SPL, Qts, Qms, Qes, Vas, Mms, Cms, Sd, BL, Xmax, Gap gauss. these are the physical meaning of these types of arguments
Z: is the resistance value of the speakers , including: Rated impedance and DC resistance . ( Unit: ohm / ohm), usually refers to the nominal impedance of the speaker 's rated impedance Z: is the minimum impedance value of the first great behind the curve impedance modulus value , which is calculated on the basis of the DC electric power speaker impedance DCR:. refers to the voice coil stationary, through a DC signal, and test out the impedance value we usually call is 4 ohms or 8 ohms . refers to the nominal impedance.
Fo ( lowest resonance frequency ) is the bookshelf speaker impedance curve corresponding to the first maximum frequency unit : Hertz (Hz) speaker impedance curves under normal operating conditions, the measurement method or constant voltage constant current speaker Law was the speaker impedance modulus versus frequency curve.
η0 ( speaker efficiency ) : refers to the speaker output acoustic power and input power ratio .
SPL ( sound pressure level ) : refers to the speaker impedance in the pass 1W of power at rated power voltage, and speakers away from the reference axis sound pressure generated on the point of 1m units : decibels (dB).
Qts: total quality speakers due to value.
Qms: mechanical quality factor values ​​speakers .
Qes: speaker quality factor values ​​.
Vas ( Speaker of the effective volume ) : refers to the volume of air in a sealed container in a rigid acoustic -acoustic speaker unit along with equal units : liters (L).
Mms ( moving mass ) : refers to the quality of the speakers participating in the sum of the components of vibration during movement , including the paper part of the drum , voice coil , playing the waves and vibrations involved in air quality and other units : g (gram).
Cms ( force along ) : refers to the supple -degree speaker vibration system support components of the greater its value , the speaker of the whole vibration system softer units : mm / Newton (mm / N).
Sd ( vibration area ) : refers to the process of the speaker vibration , the effective vibration area drum paper / diaphragm unit: square meter (m2).
BL ( magnetic ) : gap magnetic flux density and the product of the effective coil length units :. (T * M).
Xmax: Voice coil motion during vibration linear stroke unit: millimeter (mm).
Gap Gauss: gap magnetic flux density value unit: Tesla (Tesla).

Acoustic characteristics

Acoustic characteristics

1, small size, convenient to carry, the appearance of cool, trendy fashion, personalized colour is tie-in, pure and fresh and natural. The dimensions of the largest no more than football, the smallest size as the eggs;

2. Integrating amplifiers, batteries, speakers, pioneering "telescopic extension resonance cavity" patent technology, solved the difficult problem of mini speaker resonance cavity is narrow small, decades of speaker appearance specification limits, compressed to the limit.

3. Don't need long audio line, don't need an external power supply, whether it's a mountain stream of fresh rhythm, or passionate DJ dance music, can show incisively and vividly!

4, design simple, easy to use. Using standard USB interface power and audio input, avoid driving USB plug and play, fully compatiblebookshelf computer speaker Windows 95, 98, ME 2000 and XP operating system. With 3.5 mm stereo audio input interface link notebooks, desktop PCS, cell phones, PSP, walkman, MD, Mp3, handheld computer, PDA, Mp4, repeater, iPod, cell phones and other equipment;

5, mini speakers only with notebook computers, mobile bookshelf speaker and other devices connected, without power supply, can play the wonderful music. Some speakers with a large capacity lithium battery, the product can play 5-8 hours of music. Dual power supply mode is more durable.

6, portable performance is suitable for outdoor sports and explorer relaxers, bicycle outdoor sports, also apply to computer amplification, as little computer speakers. All in all, mini speakers for small volume play time is long, big horn, unlike traditional MP3 need to wear ear plugs, hurting the eardrum, has received a wider range of people love more! Especially small speakers, bicycle audio, etc!

Twitter is a kind of similar microblogging chat tool. Weibo is South Korea

Twitter is a kind of similar bookshelf computer speaker chat tool. Weibo is South Korea. So to understand. The mobile version can also be computer can also ah. Mobile phone is with traffic. Weibo and you should be able to understand what that means. A lot on the network is false. General twitter software is all Korean. Can go to the south Korean star post bar will be a twitter tutorial post a look to know. China and South Korea have literal translation help to download the registration. Don't give you copy and paste here. It allows the user to its latest news and ideas in the form of text messages sent to the cell phone and personalized website group, and not just sent to the individual. Twitter is a popular social networking and bookshelf speaker service website, allows the user to their latest news and ideas to form of the short message of mobile phone (tweets) release (push), can bind IM instant messaging software. All tweets are limited to 140 characters. In 2006, the founder of the blog technology pioneer Evan Williams (Evan Williams) created Obvious emerging company launched a large service centers. In the initial stage, the service is just used to his best friend's phone to send text messages. In February 2012, Twitter said ability for different countries and regions implement web content filtering, causing concern; In October, Twitter banc mobile application development tool vendors Cabana. On November 7, 2013, Twitter listed in nyse.

The speaker should have quality

First, the speaker generally will absorb a certain amount of psychological burden, of course, sometimes it is easy to appear the psychological imbalance phenomenon. This requires the speaker to strengthen the psychological training at ordinary times, have good psychological quality, both warm and decisive, and calm, and still can talk. Generally speaking, successful bookshelf speaker should have the following psychological quality:

1, full of confidence

Self-confidence is an important psychological support, the speaker and has important effect on the result of the speaker. It can be the speaker's determination, the Wooden Computer Speaker spirit, give full play to the speaker's creativity.

2, the success of the strong desire

Success is to promote the important drive of the speech, it is in the speech behavior plays a huge boost. It can trigger psychological motivation of the speaker, the speaker is highly concerned about the result of the speech, which aroused the concern of the speaker to speech and presentation skills, prompting continuously improve the speech, to get better grades.

Second, the personality of the speaker

Personality refers to a person's character, a noble and humble. As a speaker, he is

Need is a healthy personality and sound personality, noble personality. Because speech is a kind of thought, reason and passion infect others, move and inspire others, the speaker must have a noble personality and moral character, is likely to conquer the audience, moving heart, play the role of speech should be. A man interested in learning the speech, to truly become a master of speech, we must first pay attention to shaping noble personality, and use a variety of favorable environment to make their own to the noble personality, positive, health aspects of change.

Third, the speaker's ideological quality

The speaker for the enlightenment people's ideas, cultivate people's sentiment, the mission of inspiring people to go forward, he should be true of midwives, is full of grave digger. Shall be advanced, scientific thoughts, even a thinker of The Times. Only profound ideological cultivation, vision. A short-sighted and insular person is not qualified to the podium.

Fourth, the speaker's moral quality

One must dare to stand up for the truth. Many successful speakers and their speech can deeply rooted in the hearts of the people, they are able to by the people's support and love, is that they dared to stick to the truth, thrash ugly, distinguish between right and wrong, justice, with a cry for justice, fight for the truth of the good qualities.

Second, we must kind-hearted, aboveboard. If a speaker narrow-minded, selfish, concentrate on making profits, intrigue, that his talk will be shortness of breath; Only the broad heart, magnanimous, aboveboard, selfless, and will speak cliches weight.

Third, we need a teacher by worthy example. The speaker to give others the power of a moral lesson, first should be the model and the model of the masses.

Five, the cultural quality of the speaker

The speaker is not only the disseminator of the culture, but also the builders and creators of culture. High cultural quality of the speaker, always speaks and logically, commands, penetrating into the coming, casual attitudes, whether it is a profound truth, original ideas, or sincere expectation, surging passion, all can get the exact expression, fully express, make the audience to produce the feeling of "WenJun a words, bullet hole in my head".

Sixth, the speaker need profound knowledge

No speaker is not knowledgeable in all ages of people, in their speech in many respects practice, witty, open the hearts of people, and the exit correctly, fingertips, vivid apt,, let a person listen to increase knowledge, enjoy. Extensive knowledge can make people beautiful, vivid knowledge can let a person cheerful, new knowledge is fascinating.

Twitter is one of the foreign social networking and microblogging service website

Twitter is one of the foreign social networking and microblogging service website. It USES wireless network, cable network, communication technology, instant messaging, is the typical application of micro blog. It allows the user to its latest news and ideas in the form of text messages sent to the cell phone and personalized website group, and not just sent to the individual. Twitter is a popular social networking and bookshelf speaker service website, allows the user to their latest news and ideas to form of the short message of mobile phone (tweets) release (tweeting [1]), can bind IM instant messaging software. All tweets are limited to 140 characters. In 2006, the founder of the blog technology pioneer Evan Williams (Evan Williams) created Bluetooth Speaker emerging company launched a large service centers. In the initial stage, the service is just used to his best friend's phone to send text messages, Twitter said ability for different countries and regions implement web content filtering, causing concern; In October, Twitter banc mobile application development tool vendors Cabana. On November 7, 2013, Twitter listed in nyse. Twitter (unofficial English translation: Twitter) is a variant on the instant information, which allows Twitter user interface to their latest news and ideas in the form of short messages sent to the cell phone and personalized website group, and not just sent to the individual. In 2006, the founder of the blog technology pioneer bloggers Evan Williams (Evan Williams) create Obvious emerging company launched a Twitter service. In the initial stage, the service is just used to his best friend's phone to send text messages. At the end of 2006, Obvious to the upgrading of the service, users do not need to enter your phone number, and can through instant messaging service and personalized Twitter to send and receive information. About the origin of the name Twitter, Twitter is a kind of bird calls, founder think birds is short, frequency, fast, conform to the connotation of the site, so choose the Twitter name for the web site.