2014年1月23日星期四
Car stereo
Speaker layout is very important criteria. . Each instrument sounds , you can achieve the best results in the replay . This is often called a professional Hi - Fi ( High Definition High Definition ) . Ideal Hi - Fi effect , the key is to make the sound source signals of the same synchronization and frequency bands magnifications . Home audio is Bluetooth Speaker not difficult. Since the home audio -frequency units at the same high school all the fixed frame and the same music signal amplifier , consistent with the reduction ratio is relatively easy to achieve a good balance of quality . However , due to different car audio installation location , subwoofer unit usually only installed in the luggage compartment , the bass is generally only be installed in front of the car unit , the tweeter is usually installed in the vicinity of the A-pillar . This effect may be just to hear the treble and bass from behind the same month , the Alto section is relatively weak. In Computer Speaker addition , for different modules and power amplifier requirements , in general, can take a variety of car audio amplifiers to drive speakers ( many designs require amplified by the low-frequency part of multiple amplifiers ) , so tonal balance is difficult to achieve a satisfactory level . Address some of these challenges factors involved , the number and installation arrangement of the speakers is the key .
2014年1月22日星期三
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.
2013年12月10日星期二
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.
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