How do bluetooth speakers work
Picture the speakers you use to play your music or watch TV. Or think about the Alexa or Google Home you talk to every single day. You probably use some kind of portable speaker all the time, but have you ever thought about how it actually makes sound? Speakers are pretty incredible. Consider this your crash course!
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Content:
- 5 Reasons Why You Need a Bluetooth Speaker
- How to Connect Multiple Bluetooth Speakers to One Device?
- How to Buy the Best Bluetooth Speakers: buying guide
- How Do Wireless Bluetooth & Near Field Audio Speakers Work?
- Wireless speaker
- Choosing the Best Wireless and Bluetooth Speaker
- How to Connect a Bluetooth Speaker to Your Phone
- What are the Benefits of Bluetooth Speakers?
5 Reasons Why You Need a Bluetooth Speaker
By: Jonathan Strickland. The construction of the perfect man-cave is not a trivial undertaking. You must take many factors into consideration. How much light should you let into the room? What size television would work best within the space?
What type of furniture will you want to sink into while you prepare to be entertained? And what do you do with all the blasted wires that crisscross our otherwise immaculate fortress of solitude? Some of those questions fall outside the scope of this article but we can offer up one alternative to anyone who finds wires to be a hassle: wireless speakers.
Whether you're trying to create the perfect surround-sound theater at home, an outdoor sound system for a deck or patio, or you just want a decent pair of headphones that won't tangle you up every time you need to move, wireless speakers might help. But they can have drawbacks too. They have a limited range -- a wireless speaker on the edge of the range of the sound system may not receive a strong signal or have good sound quality.
Audiophiles may not find them satisfying. And even a wireless speaker requires power to operate. If that power isn't provided by batteries , you'll need to plug the speaker into a power source.
So even wireless speakers can still have wires. We'll take a closer look at the pros and cons of wireless speakers later in this article. At its most basic level, sound is one way we perceive vibrations. When an object inside the Earth's atmosphere vibrates, it pushes against and pulls on surrounding air molecules.
In turn, they affect surrounding air molecules. It becomes a chain reaction. Imagine a bell. When it rings, its surface actually flexes inwards and outwards. When the bell's surface flexes inwards, it pulls air molecules toward the surface of the bell. They pull on other molecules around them, and those pull on even more molecules. We call this area of decreasing air pressure rarefaction.
Extending outward from the vibrating object is a wave of air pressure fluctuations. If you happen to be within range of the wave -- the energy dissipates over distance -- your eardrum vibrates in reaction to the changes in pressure. Your eardrum is connected to tiny bones in your middle ear. These bones connect the eardrum to the cochlea in your inner ear. The cochlea is filled with fluid and tiny little hairs.
As the bones vibrate the cochlea, fluid flows against the hairs, which triggers nerve signals that move from the ear to the brain. Your brain then interprets these signals as sound.
Sound can travel through solids, liquids and gases. If you put your ear down against a table and have someone gently scratch upon it, you'll hear it loud and clear. That's because sound generally travels more efficiently through solids than gases.
This is also why sound doesn't travel in the vacuum of space -- there aren't enough particles to collide with each other to propagate sound. The nature of the sound depends upon how forcefully and frequently the molecules bump into each other. Molecules that really bash into each other create louder sounds -- a large mallet striking a huge gong is going to make molecules collide more forcefully than a tiny bell would. Faster fluctuations in the atmosphere create sounds with a higher pitch than those that have slower fluctuations.
The gong's sound won't just be louder than the tiny bell, but also deeper in pitch -- the bell creates faster fluctuations in air pressure than the gong does. Speakers -- wireless and wired alike -- create sound through vibrations. All it takes is a little electricity and magnetism. A typical speaker has several parts.
The part that vibrates to make the sound is called a cone or diaphragm. It's a flexible surface that can be pushed out or pulled inward by the rest of the speaker mechanism. It's the diaphragm that creates the changes in atmospheric pressure that we perceive as sound. An electromagnet called a voice coil attaches to the center of the cone. A permanent magnet -- a magnet that keeps its magnetic field without electricity -- sits behind the voice coil on the other side of the cone.
This means that a speaker uses two different types of magnets, which is what gives speakers the power to push and pull against the atmosphere rapidly. Electromagnets take advantage of the relationship between electricity and magnetic fields.
As electricity flows through a wire, it generates a magnetic field. Coiling electrical wire around a core -- like an iron nail -- creates a magnet when the current is on. Turning off the electricity causes the magnetic field to dissipate. Magnets have two poles -- a north pole and a south pole. Permanent magnets always have the same north and south poles.
But an electromagnet's poles can switch depending upon the flow of electricity. Forcing the flow of electricity to reverse also reverses the position of the electromagnet's poles. This is important because with magnets, similar poles repel one another and opposite poles attract.
By altering the flow of electricity through the voice coil's electromagnet, the permanent magnet's magnetic field will either push or pull on the voice coil. Since the voice coil attaches to the diaphragm, this will cause the diaphragm to pull inward or push outward.
Speakers alter the flow of electricity within a voice coil thousands of times per second, creating the precise vibrations necessary to create sounds ranging from deep booming bass notes to the high pitch of a piccolo. In traditional speakers, electricity flows from an amplifier within the source -- such as a stereo system -- to the speaker over two wires.
This allows the source to alternate the flow of electricity to the speakers, which causes the electromagnet's poles to switch. Wireless speakers have to create the same effect without the benefit of wires.
But how do they do that? Wireless speakers have no direct connection to a stereo system or other source. Instead, the system must send a signal that the speakers can receive and convert into electricity in order to drive the voice coil inside the speaker itself.
There are a few ways to do this. One way is to use infrared signals. This is similar to how many remote controls work.
The stereo system has a transmitter that sends out a beam of infrared light. Because infrared is outside the spectrum of visible light, we can't see it. The transmitter's job is to take the fluctuations of electricity -- the same ones that would control the speaker if it were wired to the stereo -- and convert it into an infrared beam.
The beam carries information through pulses. An IR system can send out millions of pulses per second. The wireless speakers have sensors that can detect these transmissions. Once detected, the sensor sends electronic signals to an amplifier.
Its job is to increase the strength of the sensor's output. Without the amplifier, the signals would be too weak to drive the voice coil within the speaker.
This is why many wireless speakers still require wired power to work. The amplifier sends electricity to the voice coil, alternating the flow of electricity as directed by the signals the sensor sends along. The alternating current will cause the voice coil's electromagnet to change polarity rapidly. The magnetic fields of the electromagnet and the speaker's permanent magnet do the rest of the work, pulling and pushing the voice coil and causing the speaker's diaphragm to vibrate.
There are several drawbacks to this type of wireless speaker. One of the big ones is that an infrared beam requires line of sight. That means there needs to be an unobstructed path for the infrared beam to follow from the stereo system to the speaker. Anything blocking that pathway will prevent the signal from reaching the speaker's sensor and the speaker will remain silent. Another problem is that infrared signals are pretty common.
Devices like most remote controls use IR technology. But even lights and human beings give off some infrared radiation. This can cause interference, making it difficult for the speaker to detect a clear signal from a stereo system. Even the most casual music fan might find it a chore to listen to a system that delivers a choppy or inconsistent experience. Radio waves represent part of the electromagnetic spectrum.
Light is also part of this spectrum. The visible spectrum of light has a wavelength range of to nanometers a nanometer is one-billionth of a meter. Infrared IR light has a longer wavelength range of around 0. Radio waves are the big kid on the block -- the wavelengths range from 1 millimeter to kilometers.
Radio waves have a few advantages over other types of electromagnetic radiation. But to get radio waves from a stereo system to a speaker you'll need a few components.
How to Connect Multiple Bluetooth Speakers to One Device?
After the first connection, it is not necessary to connect again; your device will remember and automatically connect when in range of the Bluetooth speakers. There are numerous choices out there and a lot of good quality speakers to suit just about any need. They range from small to large, loud to average quality sound, and are priced low and high. The best Bluetooth speaker depends on what you consider to be the best.
How to Buy the Best Bluetooth Speakers: buying guide
The Portable Smart Speaker is a wireless home speaker, a portable Bluetooth speaker, and a voice-controlled speaker, all in one. Around the house, you can move it from room to room — and when you leave home, you can take it with you. Anywhere with Wi-Fi, you can control it with your voice and stream music directly from the cloud. Outside Wi-Fi range, you can control it like any other portable speaker with your mobile phone or tablet via Bluetooth and listen to anything you can play on your device. Put the speaker in the middle of the party and everyone can enjoy the same experience. Truly wireless Battery-powered, so you can easily bring it with you all around your home — or take it with you when you go. Plays up to 12 hours per charge. Powerful bass Three passive radiators deepen the bass by increasing the vibrating surface area.
How Do Wireless Bluetooth & Near Field Audio Speakers Work?
Until recently, it was not possible to connect your smartphone via Bluetooth to several devices simultaneously. Today, thanks to some applications, this has become feasible. Such an improvement is very practical, especially when you are in a group and you need to play music with good sound quality. With the proliferation of smart speakers, such as the Amazon Echo and Google Home, we have more Bluetooth devices in our homes than ever before.
Wireless speaker
You know how to use Bluetooth speakers, but do you know how they work? Knowing how is essential because that piece of information can help you choose the ones that best meet your needs. The distance you can use your Bluetooth speaker from its audio source will have an impact on your desired usage. Radio waves allow cell phones to communicate with a cell tower. Your Bluetooth speaker uses radio waves to communicate with your devices, but those waves are a lot weaker.
Choosing the Best Wireless and Bluetooth Speaker
When it comes to setting it up, though, you might be concerned as to whether or not all of your devices will connect seamlessly with your new speakers. From there, your device will be able to reconnect with the wireless speakers at any time. TVs and desktop computers can be a bit more complicated in terms of avoiding the usage of pesky wires and cables, which you probably wanted to eliminate when you opted to buy wireless speakers in the first place; however, there are a few options to make setting up your system easier, such as using wireless adapters with your sources. Wireless adapters, such as our W3 Wireless Adapter and D2 bit Wireless DAC , enable wireless connectivity in devices not previously built for wireless connections. You can still make use of those cables, of course, if you are uninterested in purchasing additional pieces for your audio system; since our wireless speakers feature analog inputs, they can easily be connected to them by simply connecting their line level outputs to the input of these speakers.. Most of our products can also connect to multiple different types of brands or sources, so whether you prefer iPhones, iPads, or even Android devices, we have the wireless system components that will best accommodate you and your lifestyle. An Expert Explains. Speaker Setup — How to break in new speakers.
How to Connect a Bluetooth Speaker to Your Phone
This article explains how to pair a Bluetooth speaker to your iPhone or Android smartphone. Some Android buttons and menu options may vary slightly. The process of pairing a Bluetooth speaker with an iPhone only needs to happen once. Once a Bluetooth speaker is successfully paired to an iPhone, it should automatically connect each time it's powered on.
What are the Benefits of Bluetooth Speakers?
RELATED VIDEO: HOW TO CONNECT YOUR SMARTPHONE TO THE BLUETOOTH SPEAKERWhen it comes to wireless Bluetooth speakers, what is the first idea that comes to mind? As the name suggests, the main difference between a Bluetooth speaker and traditional speakers is that it does not require a wired connection. As long as the device in your hand supports Bluetooth, you can wirelessly connect to the Bluetooth speaker. It is also portable and compact, convenient for use and easy to carry around regardless of the environment.
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Bluetooth Speakers Includes: How to buy best speaker Bluetooth speakers are a very convenient way or listening to music. Increasingly music is being stored on mobile phones, or possibly other devices that are Bluetooth enabled. Using a Bluetooth speaker it is possible to listen to music from these small portable devices at a sensible volume and without using earphones.
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