Development Story of Portable Speakers System

Development Story of Portable Speakers System 

When popular style is becoming a trend, portable speakers begin to become popular as same as street dancing a couple years ago. Features of portable speakers is compact, portable, and quality sound to meet needs of people's daily lives, such as learning, entertainment, leisure, etc. It can play portable media such as SD card, TF card, USB disc and so on. Music signal as MP3 or WMA which are stored in these media above mentioned, and those music signals will be decoded by decoding circuit inside through digital-to-analog conversion, and then they will be amplified by power amplifier circuit to drive speakers for playback. Wistao technology released several products to markets.

Portable Speakers System

Stereo Portable Speakers System

Stereo Portable Speakers System

Speaking broadly, portable speakers is small in volume and distinguish itself from those larger HIFI home theaters, music centers, 2.0 or 2.1 multimedia speakers, etc.. General it’s volume are relatively small and can be easily put in bag, using storage card or wireless signal to play music media, and getting power from battery; its main advantages is portability. Not only indoor but outdoor can play normally. But anyway, it is a class of active loudspeakers. We will explore its development story from portable view.



Stereo or speakers were not considered as portable before transistor hit market. Perhaps you might also see some antique tube radios or phonographs working with horn speakers from film and television; they were generally to be placed somewhere in room like living room or reading room. If present electronic products compared with it from volume view, it will be described as a small sorcerer in the presence of a great one due to its bigger volume. By the way, you can find a computer at that time, which volume was larger as a building. With transistor application, electronics product’s volume became smaller and smaller, thinner and thinner. Last 1950s and 1960s, Sony used transistor technology to make radio and instant hit in the United States, opened U.S. market. And later Sony developed an innovative products Walkman, which could be said is an "originator" of portable speaker. It is an analog audio player based on tapes. After then CD emerged, it marked advent of  digital age, is " 0 " and " 1 "era, which greatly improved sound quality of audio playback.CD avoid mechanical wear as tape player due to its non-contact signal reading technology, also avoid distortion of the signal source. After two or three decades, Internet age was coming. Industry found a 640M CD disc that can be stored only ten to twelve tracks, CD disc capacity is limited and does not facilitate transmission within networks, so they developed music compression format technology firstly --- MP3 format, that did not affect the sound quality of  music, and track capacity became smaller from 30 to 40 megabytes of CD format to only a few megabytes of compressed MP3 format for a same track, so it’s transmission within internet network becomes very easy. During this period, portable CD player based on a CD disc media called Discman emerged; its music is listened by headphones. And MP3 player was also hit market as portable music devices, but it needs to use headphones to listen.



With popularity of desktop PC, multimedia speakers have become a standard of the computer active speakers, but it can only be accompanied by the computer around as much less as portable. During the period, a variety of digital products such as SD card, TF card, USB disk were be developed, and their storage capacity was also growing; Large capacity rechargeable battery and LSI Class D amplifier were adopted on portable speaker, it made portable powered speakers miniaturization, which also led to emergence of digital portable speakers, to achieve a truly "portable", which is digital portable speaker today.



Technology continues to progress, and it has also changed our lives. With advent of powerful decoder chips, portable speakers’ feature also is becoming more and more powerful, many functions have been added to portable speaker, lyrics display, repeat, breakpoint memory, multi-format music player, etc.; while added bass enhancement technology to speakers’ cavity, it can reproduce familiar quality sound as HIFI speaker.

Mud Is Gone

Mud Is Gone 

Most of us might experience to hear poor music with poor audio devices. Now, you can put them away.Do you recall the voice of the teacher from The Peanuts cartoon, by Jim Shultz? The students responded with "yes, sir" and "I understand, sir". How they understood "woh woh...wah woh woh wah...woh" has always vexed me deeply. Take that now into the portable Bluetooth speaker market, and many speakers follow the same muddy but  Wistao Bluetooth speaker, "woh wah" approach to reproducing the music, games, movies and speakerphone calls we strive to access everyday.

The human ear is capable of picking up a certain range of sound frequencies. Research shows this range to be 20hz to 20Khz. Sound is measured and perceived in frequency (pitch) and intensity (loudness). Frequency is measured in hertz or hz. What does all this techie talk mean and where am I going with all this?

High definition or high fidelity (hifi) audio comes down to one word...clarity.

Here are some real world examples of sounds we hear everyday and the general frequencies they produce (and we perceive):

• Rumble of thunder = 50hz to 250hz
• Average size dog bark = 500hz
• Leaves rustling = 800hz to 4Khz
• Bird chirp = 4Khz to 6Khz
• Human voice = 150hz to 8Khz
• Human voice through a telephone = 300hz to 4Khz

We like to break the sound spectrum into 4 easy bands, or frequency ranges:

• Low band= 20hz to 200hz
• Low-Mid band = 200hz to 800hz
• Mid-High band = 800hz to 4Khz
• High band = 4Khz to 20Khz

These bands may look familiar to you, more commonly known as EQ. Car stereos, home stereo systems, and most portable audio devices have some sort of EQ capability for you to adjust the sound bands to your liking. Many of these devices use terms like bass, mid, and treble.

Our anti-"woh wah" campaign deals with the mid-high and high bands of portable speakers and Bluetooth speaker, or any speaker for that matter. I believe these two upper bands are the most sensitive hearing ranges for humans. This is where the clarity and presence of speech occurs. The tone or warmth of speech is in the low-mid band. Without good reproduction of these upper two bands, the clarity or high fidelity sound is lost...gone...outta here...trapped in the land of woh-wah. Many speakers do not consider the top of the high band either (8Khz and up). This is that range of brightness and sizzle, that I call "air",that gets forgotten many times and brings an added clarity to your audio sources. What good is a speaker (or speakerphone) that doesn't accurately reproduce the most sensitive range of hearing for humans? It is my strong belief that a speaker should accurately reproduce the human voice first (with high band emphasis and "air"), then more full-range, musical content second.

As you hunt for a great speaker solution, be aware of these ranges of sound, especially the mid-high and high bands. I have come to appreciate the detail and high band clarity of a well-engineered speaker over one that can create that huge "thump" of bass. Especially a speaker that you can fit in your hand or toss in your backpack.

So, travel with caution on your audio journey, declare clarity as king, and watch out for the mis-engineered speakers from the muddy land of "woh- wah".

Bluetooth High Speed Technology

Bluetooth High Speed Technology

Bluetooth high speed technology lets you quickly send video, music and other large files between your devices.


The Bluetooth SIG announced the release of Bluetooth high speed technology in April 2009 when it completed Bluetooth Core Specification Version 3.0 + HS. The v3.0 Specification enables the use of a Generic Alternate MAC/PHY, allowing well known Bluetooth protocols, profiles, security, and pairing to be used in consumer devices while achieving faster throughput by momentary use of a secondary radio already present in the device.(more Bluetooth product information, please visit http://www.wistao.com/en/index)


Bluetooth high speed technology is also included in the newer Bluetooth v4.0 Specification released in June 2010.


Bluetooth high speed technology works by isolating activity from the AMPs, enabling the use of new radios without full system integration. This reduces costs while expanding future build opportunities. It also removes the user from new paradigms and supports existing Bluetooth use cases, making them faster and ensuring continuity for the UX experience while lowering costs and reducing training requirements.


The v3.0 + HS enhancement to the Core Specification provides consumers with powerful, wireless connections that are more robust and reliable than ever before. Features include:

Power Optimization - By using the high speed radio only when you need it, Bluetooth high speed reduces power consumption, which means a longer battery life for your devices.


Improved Security - The Generic Alternate MAC/PHY in Bluetooth high speed enables the radio to discover other high speed devices only when they are needed to transfer your music, pictures or other data. Not only does this optimize power, but it also aids in the security of the radios.


Enhanced Power Control - Limited drop-outs are now a reality. The enhanced power control of Bluetooth high speed makes power control faster and ensures limited drop-outs, reducing consumer experience of impacts from power. Users are now less likely to lose a headset connection—even when the phone is in a coat pocket or deep inside a purse.


Lower Latency Rates - Unicast Connectionless Data improves the customer experience of speed by lowering latency rates, sending small amounts of data more quickly.

Influence Audio development of the two epoch-making technology - Bluetooth and MP3

Influence Audio development of the two epoch-making technology - Bluetooth and MP3 

We always like a stylish and fashion consumer electronic products like as iPhone or other smart phone, which have a lot of function such as playing music, playing game, reading, taking photos and other something except calling. But do you know it have two more favorite functions of playing music and Bluetooth configuration, which didn’t exist 20 years ago.

Let us guess: you’re probably reading this article on a laptop using high-speed internet. This article is probably competing for your attention against five other open tabs within your Google Chrome or IE browser. Metallica might be playing in the background, or even the Jackson 5.

But do you remember when all of that didn’t exist? Think back to a time when commercial music was still a luxury and concert tickets were purchased at a physical kiosk. Can’t do that? We must be getting old.

The fact is that the aforementioned technologies didn’t exist 20 years ago. We’re talking about a time before MP3s, iPhones, and Bluetooth. It was the dark days so prepare for a wild ride through tech history courtesy of your tour guides at Wistao Technology, the manufacturer of Bluetooth speakers and HIFI Bluetooth Acoustics. (more Bluetooth product information, please visit http://www.wistao.com/en/index).

1. Bluetooth - This beast of an invention, and arguably it’s favorite technology, was originally conceived in 1994 by Ericsson as an alternative to the old RS-232 data cables. Before long it was discovered that Bluetooth could connect many devices as a short range receiver that wouldn’t steal too much energy.The technology was soon introduced to numerous devices that allowed for hands-free calls, mass data sharing, and more. Now you can thank Bluetooth for many of your daily tasks including using your car for hands-free calling, wireless control of your cell phone, and yes listening to music on your Bluetooth speaker.

2. MP3 - We shudder when we remember jamming to Jewel on our old Walkmans. Jewel is still fantastic but the archaic technology with minimum storage capacity still haunts our nightmares. The MP3 file type was originally released to consumers in 1993 and only began to hit the internet in the latter half of 1994. With its introduction, consumers were able to easily compress songs meaning that more could fit onto a CD. This invention ultimately led the digital music revolution and became the forefather for how you consume music today.

iWST Water Drop Bluetooth Speaker Bluetooth 2.1 Portable Elegant Quality Sound （WBM2201)

iWST  Bluetooth Speaker Bluetooth 2.1 Portable Elegant Water Drop Quality Sound （WBM2201) 

It like a water droplets of dawn which fall from green lotus leaf on pond!
 
It’s compact, exquisite and portable, the "drop" adopt bionic shape. What is it? It is a Bluetooth speaker (WBM2201) and hit market by Shenzhen Wistao technology recently. And it built in a quality, stability, and high performance Bluetooth module which adopt Bluetooth 2.1 + EDR standard; Once it is connected with your smart mobile terminal (iPhone, iPad, Android smart phone, Tablet PC, Notebook, etc.) with Bluetooth connection, you can broadcast a wireless Bluetooth music, and its built-in high-performance rechargeable lithium battery internal, you no longer need to connect any cables or it can be placed in your favorite place, whether indoors or outdoors, or your bedroom with den, you can enjoy the wonderful wireless music; It’s beautiful sound, strong bass, can be filled with any of your indoor space.
 
Also it built in high-performance microphone, you can use it to answer the call hands-free; when a call comes in, the music player will switch to the phone call; a calling is end, music playback will automatically resume. Free to switch calls and listen to music!
 
It’s variety of colors to choose from emerald green, passion red, ivory white, classic black, there is always one your love.
 
 Specific specifications, please visit the products center, or http://www.wistao.com/products_show.html?513

Pill Bluetooth Speaker with NFC and APT-X Technology

Pill Bluetooth Speaker with NFC and APT-X Technology

There is a saying, only you cannot think, but not impossible, your heart how far you can go far

 

For consumer electronics products, it has a property of general consumer products like as stylish appearance, in line with the characteristics of consumer tastes and trends. There are two ways to achieve industrial design but nothing more than the geometry or the bionic, this speaker with a geometric shape plus imitation of an object, and it is a "pill" imitation, specifically like a capsules which we eat a capsules usually when we have a cold. On the other hand, it is a "Times" of electronic products, it use NFC and APT-X technology. So, this Bluetooth speaker is a "Times" and the fashion consumer electronic products. It can play wonderful music with an NFC-enabled mobile phones to use “contact" mode like as Samsung Galaxy S3 and Nokia contact the speaker. APT-X technology can be "easy and instant" spread music, and allows you to enjoy wonderful HIFI one. (More Bluetooth speaker information, please visit Wistao Technology website http://www.wistao.com)

 

t is a smallish, about 190cm, diameter 45cm with four speakers, and it booms bass in every room of the house without connecting any cables. The Pill frees you to roam which means you’ll always have high quality sound near or far, because communication distance for the Bluetooth speaker is up to 100m (30 feet).

 

The pill weighs only 310g, small and portable enough to hand into the backpack, it can also be taken to outdoor, can be placed anywhere where you want. Built-in high-performance microphone that it has become a standard Bluetooth speaker, you can use it hands-free Bluetooth calling.

Small Speakers That Still Pack A Big Punch

Small Speakers That Still Pack A Big Punch

Are you customers looking for speakers which may save your space and be convenience without cable-connecting and without sacrificing their bass sound quality? Then take a look for our rang of portable Bluetooth Speaker, which is available in size of 145 by 55 by 33 millimeters. This is released by Wistao Technology for Bluetooth speaker of model no WBM2208.

It is Bluetooth speaker that stylish, compact and portable, superior sound quality and bass. The speaker is made by two full-range speakers and bass enhancement technology with specially tuned circuit to achieve high-quality music playback. Abundant amount of sense, treble is transparent and highly resolving, vocal sound is clarity and bass is powerful.

Wistao Technology company has launched a classic exterior design of the aluminum alloy stereo Bluetooth speakers, which is a rich modern texture and play music wireless with a Bluetooth-enabled smart phones such as IPHON, Android phone, IPAD Tablet PC and laptop connections. Also it adopt Bluetooth 2.1 plus EDR specification, it’s communication distance is up to 10m, built-in high-performance microphone and CVC technology enables handsfree to answer phone clearly.

Classic black, Passional red, Bright gold, elegant purple variety of fashion colors to be chosen.

Bluetooth Speaker with Alloy Metal Case Bluetooth 2.1 EDR

More information, please visit http://www.wistao.com/en/products_show.html?617

Ten Principles for Good Design

Ten Principles for Good Design 

Profile of Tradetional Bluetooth Technology -- Bluetooth Version 2.1 plus EDR

Profile of Tradetional Bluetooth Technology -- Bluetooth Version 2.1 plus EDR 

Bluetooth inventor is Ericsson company of Sweden, and it already started to develop Bluetooth technology as early as 1994. In February 1998, a Special Interest Group had been established jointly by Ericsson, Nokia, IBM, Toshiba and Intel5 a multinational company for a global short-range wireless communications technologies, it calls Bluetooth.
 
Up to now, Bluetooth technology had been developed V1.1/1.2/2.0/2.1/3.0/4.0 six editions totally. Hereinto, the, version 1.1/1.2 is earlier technology, and they had been phased out basically. While version 2.1 is used widely, transmission rate of Bluetooth 2.1 version can be achieved the 2M bit per sec or more, and devices which adopt 2.1 version can transmit data and voice simultaneously.
 
Bluetooth version 3.0 and 4.0 is an improved version, whose function of transmission speed and distance is substantial increased, especially High Speed technology of Bluetooth version 3.0 and Bluetooth Low Energy of Bluetooth version 4.0 after they hit market.
 
Theoretically, the fastest transmission of Bluetooth technology is reached 24Mbps, but currently it’s transmission rate wasn’t more than 1Mbps under Bluetooth version 2.1 application without EDR technology supporting. In order to achieve large data stream, the introduction of EDR (Enhanced data rate, the enhanced rate of the Bluetooth technology abbreviation) have been introduced, it improves the data transmission rate of the Bluetooth technology to reach 2.1Mbps.
 
In addition to get availability a more stable audio stream transmission and lower power consumption, it also make full use of the bandwidth advantage connect multiple Bluetooth devices at the same time, let Bluetooth devices get satisfactory transmission rate.（More infromation about Bluetooth audio products, please visit http://www.wistao.com/en/index.html) .

What Could Wireless Bluetooth Speaker Taken? --- Wireless Convenience of A Wonderful Experiences!

What Could Bluetooth Wireless Speaker Taken? --- Wireless Convenience of A Wonderful Experiences!

Era of smart mobile terminals is coming, they have become more and more popular and fashion product, such as IPHONE, IPAD and many Android smart phone and tablet computer and gradually Bluetooth system has also become a standard configuration of the mobile terminal. Those mobile terminal device achieve a trend to integrate a great music, video, games and other application functionality, and even mobile phones and other portable digital products could not been taken away from our daily lives. For example, online map, microblogger, e-mail, instant messaging is a typical example. From begining in 2011, main manufacturers of speaker have begun to enter the market segments of Bluetooth wireless speaker. Shenzhen Wistao Technology (http://www.wistao.com) had developed different series of Bluetooth speaker through market research to grasp trend of Bluetooth product development.

For such handheld portable devices of smart phone or tablet, wired speaker is clearly inappropriate due to highly mobile, but it will be more comfortable to use Bluetooth wireless speaker.

With Bluetooth wireless speakers, what can we do indeed? Take a look, and share it!

A.   When you get together with friends, or are picnic on the country side, or take leisure time and do exercise, you can use your phone to play the music, but it will reduce acoustics of music greatly. However, Bluetooth speakers, you can enjoy the beautiful, first-class sound quality of music without cable connection, also you do not have to worry about the battery problem.

B.   Share network radio like as BBC music, CNN radio, WIN7 Internet radio, etc. Together better than alone, when we would like to share our collection of music at the party, you will first think of the speakers, Bluetooth speakers must be the best choice at this time, almost without limit by distance indoors . In this way, you can not endure the bad phone or laptop sound.

C.   High quality of game experiences for all games almost. At beginning, games of mobile phone just to design to kill time only, but today's mobile games have been very strong functions with hardware to enhance the level. Not only from visual effects and sound but also game-playing do reach a very high level. And like as Gameloft and Popcap companies, They had been released a large number of outstanding game for smart phones or tablets. In addition, such as the music game as DJMax, it also will demand a higher sound output.

D.   Suitable for mobile television demand (Thunder, You Tube, Sina video, etc.). Online movies and TV series has also become one of the important functions of the portable devices, because of online video software easy to use, many people return home and use iPad or smart phone to watch video instead of computer. This operation has two advantages, one is to simplify operation between speaker and amplifier, another advantage is that you can curl up on the couch or lie in bed or sit at desk. Using mart phone or tablets is certainly much more convenient than computer, this arbitrariness is obviously not suitable for wired speakers.

E.   Hands-free answering the phone. Avoid prolonged to answer phone calling, and the impact of the hearing, while reducing smart phone radiation. Also, liberate your hands while call is coming.

F.    May be used to hold a conference call. The clear call feature can be used to hold a conference call.