Bluetooth wireless communication technology as an open global standard for wireless data and voice communications,the first application was to replace the headphone cable in the field of voice communication.
Until the 4.0 version of the low-power Bluetooth technology is widely used in smart wearable devices and smart home devices, these are gradually upgraded from the original Bluetooth headset era, and now the smart devices for Bluetooth technology applications are more and more popular.
Many friends have encountered such problems when using Bluetooth devices. The signal is intermittent, sometimes strong and sometimes weak, affecting the use of the device. What caused this? Today we have a introduction to the phenomenon of signal difference between Bluetooth receivers.
Bluetooth is a wireless technology standard for exchanging data between fixed and mobile devices over short distances using short-wavelength UHF radio waves in the industrial, scientific and medical radio bands, from 2.400 to 2.485 GHz, and building personal area networks (PANs).
Moreover, Bluetooth is a radio technology that supports short-range communication of devices (maximum transmission distance of 100 meters),
which can effectively simplify communication between mobile
communication terminal devices, thereby making data transmission more rapid and efficient, it uses a decentralized network structure. As well as fast frequency hopping and short packet technology, it supports point-to-point and point-to-multipoint communication.
The 100 meters mentioned here refers to the maximum transmission distance and is in the condition of no obstruction.From the above, we can speculate that the possible reasons for the bad Bluetooth headset signal are as follows:
1.The Bluetooth Version - The Bluetooth version is an important aspect that affects the connection of Bluetooth headsets. The higher the Bluetooth version, the faster and more stable the signal transmission, and In the process of talking and listening to songs, consumers will encounter fewer signal disconnection and sound jams.
At present, Bluetooth headset products on the market generally use
Bluetooth version 4.2, and some mid-to-high-end products have been
adopted Bluetooth version 5.0.
2.The quality of the headphone, if it is not good, the Bluetooth transmission effect will also affect;
3.Because the human body and clothing are blocked, the Bluetooth transmission is blocked;
4.The Bluetooth earphone battery is about to be empty, and the transmission capacity is degraded.
So in the process of inspection, we can find that these methods can solve the problem of poor signal. The position of the mobile Bluetooth headset, if the signal changes with the position change, the possible reason is "The third point"; if the signal does not change significantly, the earphone is charged, and the effect is tested after full charged; if the above two points are all tested, It is the problem of the transmission capacity of the Bluetooth earphone itself (quality problems and service life problems), which can be replaced or repaired as appropriate.
Of course, there is also a situation where Bluetooth and Wi-Fi signal interference problems may have been encountered. Both of them mainly use the 2.4GHz frequency band. When both are turned on, the data throughput of Bluetooth will drop sharply, and the pairing equipment is difficult. Wi-Fi is intermittently interrupted and the network is limited.
At present, there is basically no way to deal with this problem, but
you can temporarily solve some problems for you by the following scheme.
Method 1: Connect to a 5GHz wireless network Now that you know the problem is in the band conflict, consider buying a dual-band (2.4GHz+5GHz) router and connecting to a 5GHz Wi-Fi network. This method can completely solve the interference problem, but cost a lot of money.
Method 2: Replace the Wi-Fi channel Take the TP-Link router as an example. Log in to the router web management page and find the channel option in Wireless Settings -> Basic Settings and change it to any of 1, 6, and 11. These are 2.4 GHz non-overlapping transmission channels, which are more stable than other channels.
Method 3: Turn on the NIC Bluetooth coexistence function In the wireless network cards produced in recent years, Bluetooth coexistence is supported. The method is to find Bluetooth Collaboration or Bluetooth Coexistence Mode (name may be different) in the Advanced tab of the network adapter properties, and set it to Enable. Windows will automatically reconnect to Wi-Fi, and the interference with Bluetooth will be alleviated.
Method 4: Keep away from interference sources Separate the Bluetooth terminal from devices that use the 2.4 GHz band, such as routers, microwave ovens, and cordless phones.
Nowadays, headphones & earphones have become a important “friend” for everyone. When we are having a relax, working, playing games, and learning lessons, we all cannot leave without it. And with the launch of wireless Bluetooth earphones, now the earphones are more popular and most people love it.
But with the continuous development of headphones, what damages does the headphone cause to our body? Many people say that wearing headphones for a long time will damage hearing. Is this correct? And does the wireless Bluetooth earbuds have radiation problems?
Wearing headphones for a long time can damage your hearing?
Like other senses, there is a special hearing "receptor" in the ear - the ciliated cells in the cochlea. The reason we can hear the sound is because the ciliated cells are stimulated, and oscillate as the sound vibrates. However, once the cilia swings too much, the sensitivity is reduced and it will damage the hearing in the long run. This damage is gradual, and there is no obvious hearing change at the beginning, so it is always easy to be ignored. Once it is discovered, it is too late.
Relevant medical data also shows that when the volume heard by the human ear exceeds 85 decibels, the longer time can cause hearing fatigue. When the volume is above 110 decibels, it is enough to cause the hair cells of the human ear to die, and in severe cases, it can cause deafness.
So how do we prevent the damage that headphones bring to us? Expert advice: "Do not wear headphones for more than 1 hour, the intensity should not exceed 2/3 of the maximum volume."
Do you want to use headphones and want to protect your hearing? Then remember these five points:
1.Noisy occasions, do not listen
When
the outside noise is large, in order to hear the sound in the earphone,
we will increase the volume unconsciously, which will increase the
damage.
2. Quiet occasion, low volume listening
In a quiet environment, just set the volume to be clear.
3.Limit the maximum volume
When using the headphones, never turn the volume up to the maximum, preferably no more than 2/3 of the maximum volume.
4.The head design headphone is relatively safe
The
headset has a large contact area and a small pressure, which is
relatively less irritating to the cochlear ciliated cells and is
relatively safer.
5. Avoid listening for a long time
To get rid of the bad habit of using headphones for a long time, WHO recommends that it is safer to not exceed 1 hour each time. If
you feel tinnitus, hearing loss, pain in your ears, and secretions,
please go to the ENT department for further treatment as soon as
possible.
Does the wireless Bluetooth headset have radiation problems? What is radiation? Radiation
refers to the phenomenon that part of the electromagnetic energy
emitted by the field source propagates away from the field source and
then returns to the field source, and the energy spreads out in the form
of electromagnetic waves or particles (such as alpha particles, beta
particles, etc.). Radiation itself is a neutral word, the name of energy
transmission, and light is also a kind of radiation. Everything in
nature, as long as the temperature is above zero in absolute
temperature, such as the human body, is constantly transmitting heat in
the form of electromagnetic waves and particles. This way of
transmitting energy can be called radiation.
What is common radiation? Radiation is divided into solar radiation, electromagnetic radiation and thermal radiation. Common electromagnetic radiation is emitted by electrical appliances.
Any consumer has electromagnetic radiation, such as a light bulb. When
the electromagnetic wave radiation intensity exceeds the standard amount,
it will have a negative effect, causing different diseases of the human
body, which may cause harm to human health. This part of the
electromagnetic wave radiation exceeding the standard amount is
electromagnetic radiation pollution.
What is the radiation value of the Bluetooth headset? Expert organizations such as the World Health Organization and the IEEE said that the radiation of the Bluetooth headset was not found to be harmful to the human body.
The output power of the Bluetooth product is about 2 milliwatts,
which is one-millionth of the power used by the microwave oven. It is
one-thousandth of the power of the mobile phone (mobile phone). The
radiation of Bluetooth headsets are more safe for the human body, and
children and pregnant women can use it with confidence.
Of course, the output power is set to achieve its design purpose. The transmission distance of the Bluetooth headphone is about 10 meters, so only a very low power can be used to achieve the purpose of 10 meters transmission, and because the power of the Bluetooth headset is small, Its penetration ability is also limited.
In fact, the radiation of the Bluetooth earphone is almost negligible.
For example, the fluorescent light in your room is larger than the
radiation from the Bluetooth headset. Bluetooth headsets have low
radiation, which is one of the reasons why many people are optimistic
about Bluetooth headsets.
What is screen protector easy applicator? Just like its name, because of its functional characteristics, make us easily to install tempered glass screen protector without any bubbles and easy to accurate the hole of mobile phone.
If you bought a LITO first generation glass screen protector easy applicator
before, although it is making us easily to install tempered glass,
because of it is too large, it not only takes up space, but also causes
an increase in our transportation costs.
So what kind of optimization does the Lito Product Department do for this shortcoming? Today, let shirley introduce you to the new generation of glass screen protector easy installation.
The second generation of phone screen protector easy application has changed a lot from the appearance, from the original large volume to a small tool now, not only will not increase the cost of transportation, but also help us better to install tempered glass.
After reading this tool, you will definitely think, how can it be installed? As a photo below: Using a PET film + a small amount of glue to adhere to the tempered glass screen protectors, the combination of the bottom hole position and the tool, then to be a installation tool, how about it? Too simple, right?
And here to tell everyone a good news, PET film can also be customized LOGO,
the first generation of screen protector tools due to its matte PC
material, can not achieve custom LOGO, but the second generation
applicator can be done.
Use the charging socket of the mobile phone to connect the mobile phone with installation tool, so that we don't need to worry about how to accurate the screen protector onto the phone hole.
For the first generation of screen protector applicator tools,
Samsung and Apple's tempered glass require a separate mold, and now the
second generation of applicator tools are not needed, a small tool, but
full of great energy.
And the installation tool is not only suitable for tempered glass screen protectors, but also for nano TPU film.
Currently available for iPhone models and Samsung popular models.
If there is anything you don't know well, then please see the video below:
iPhone Front & Back Tempered Glass Screen Protector: Glass Material: High silicon aluminum Thickness: 0.33mm AB glue: 130AB Korea glue Anti-finger oil: Japanese CNC: +/-0,03mm Transmittance: 90-92% Wear-resisting: 1500 times Water Drop Angle before rub: 110°, after rub 80-97°, with 500g ball Tempering: 4H, at 400℃ Hardness: 9H Ball drop: g/cm/ times, 32g 40cm
Samsung 3D Full Cover Tempered Glass Screen Protector: Glass Material: Japan Asahi Glass Hardness of Tempered Glass: 9H Tempering Time: 4.5H Thickness of Glass: 0.25MM Transmittance Level: 93% Anti-Finger Print Coating Type: Japan Daikin fingerprint oil Thickness of Glue: 0.07mm Country of Origin of Glue: Japan Wear-resisting: 3000 times Water Drop Angle before rub: 110°, after rub 100° Ball drop: 32g/60cm/3 time
Please contact us if you are interested. Contact Person: Shirley Wong M: 0086-18589219627 Email: shirley@litoscreen.com Whatsapp: +86-18589219627 Wechat: glass627 Skype: shirley.wong66 Website: www.litoscreen.com
Will screen protector remove oleophobic coating? Nowadays, many mobile phones have oleophobic layers to reduce the stains on the phone. If we usually use the mobile phone screen protector,
will it remove the oleophobic coating? So let us to understand what is
the oleophobic layer. What is the function of the oleophobic layer?
What is the oleophobic layer? We also called oleophobic coating, or hydrophobic coating. As the name suggests, it is a composite coating, which is often coated with nano-silica as a raw material or a nano-scale fluorine-containing material. This coating combines the characteristics of light transmission.
In
the field of mobile phones, this coating is mainly used on the screen
of mobile phones. It is true that the screen of the mobile phone needs
to be very transparent, so it should be as thin as possible and does not
affect the display screen of the mobile phone. Its function is to make
the phone screen easier to clean and not easy to leave fingerprints and perspiration.
At the same time, some mobile phone manufacturers will improve the
screen sliding experience when choosing a coating, which makes the
screen coating smoother and more natural.
Its
principle is not complicated. The contact area of the layer with oil or
water is relatively small (compared to a simple glass layer). It
originates from a special nanostructure, so the water droplets are like
the top of the blade, and it is not easy to attach to the phone screen
which it is the so-called "cleaning effect" of the plant leaves.
Mobile phone tempered glass with oleophobic layer
Phone screen after the coating is worn
As
can be seen from the picture, the new mobile phone with oleophobic
cpating and the mobile phone that has been almost wiped out by the
oleophobic coating for a long time are really different, and the water
droplets will spread out.
The misunderstanding of the oleophobic coating There
has been a lot of debate about the oleophobic layer. The focus of the
debate is that a heavyweight mobile phone of a heavyweight brand has
been exposed without oleophobic layers. In fact, this feature is not
required, and there are no regulations or mandatory requirements. Mobile
phone manufacturers use oleophobic layers on high-end products to
provide a better used feeling.
This
configuration is not absolute, not that it must be good. It is true
that the oleophobic layer can make the glass perform better, but this
performance is not lasting. Because the coating is very thin, it will
gradually wear out in daily use. Generally, there will be nothing left
in a few months. So the experience is very good at first, and you will
find that mobile phones are getting more and more dirty on the screen
after few months. In addition to the normal wear and tear of the mobile
phone screen, there are many traces of scratches and friction that are
invisible to the naked eye, which will cause the oleophobic layer to
fall off.
So how to better protect our mobile phone? First
of all, if the original factory mobile phone has no screen protector
and comes with an oleophobic layer, then the user can use it with
confidence, and the screen can be cleaned well until the oleophobic
layer is worn out. If the phone has a screen protector at the factory,
it is best not to remove the screen protector directly, unless you are
not used to the feel of the screen protector. Nowadays, the high-quality
screen protector often has a certain oleophobic effect, and even the
coating is attached, to protect our mobile phone screen from scratched.
If
you feel that the experience of the mobile phone has been affected, you
can also use the popular tempered glass screen protector or high-quality screen protective film.
As long as you pay attention to the screen of the mobile phone, it will
not be scratched, and it will not be placed with hard objects such as
keys.
Stress is an inevitable part of life.
Seven out of ten adults in the United States say they experience stress
or anxiety daily, and most say it interferes at least moderately with
their lives, according to the most recent ADAA survey on stress and
anxiety disorders.
Stress is impossible to eliminate, but you can learn to manage stress. So today LITO will introduce a product that can relieve your stress.
With a circular charging case and a mini design, very suitable for our hands to play.
You must know the Fidget Spinner, in 2016, the Fidget Spinner is to be popular because of its unique design and it can help people who have trouble focusing or those who fidget to relieve nervous energy, anxiety, or psychological stress.
If you are in China, you will also know Baoding Ball. They are also known as Chinese "balls for ball practice" exercise balls, Chinese health balls, Chinese meditation balls, and Chinese medicine balls. Baoding balls are used by rotating two or more balls repeatedly in the hand. Intended to improve finger dexterity, relax the hand,
or aid in the recovery of muscle strength and motor skills after
surgery, Baoding balls work similarly to Western stress balls.
The LITO BE40 wireless earphone headset is based on the principle of the Fidget Spinner rotating, combined with the working mode of the Baoding ball. Earphone adopts the 360-degree rotary opening and closing design. Through the rotation of the charging case, achieve the ability to exercise your hand muscles and reduce stress. For ADHD people, it can also improve the symptoms of inattention and hyperactivity.
The hook design of the earphones charging case also perfectly for us
to get the charging case stuck in our hands, so that we don't have to
worry about when we rotate the lid of the charging case, and the entire
charging case is also rotated.
Now, let us enjoy the music time and the relax time.
In our daily life, we basically use the mobile phone wall charger to charge the mobile phone every day. So what are the notes for using the mobile phone charger? Let's know more about it:
1.Suitable temperature when charging:
In the low temperature environment, the protection mechanism of the
mobile phone battery will delay the charging speed. In the high
temperature environment, the lithium battery will become unstable. In
severe cases, the device may be burned. So we recommend to charge the
mobile phone in a well ventilated and heat-dissipating environment.
2.Try to charge directly:
Avoid using power bank, because now we more and more rely on mobile
phones, so always bring a power bank to prevent unexpected needs, but
power bank is convenient,and there is no temperature measurement,
over-current protection and other functions, long-term use of power bank
Charging will reduce battery performance and battery life.
3.Daily cleaning of the dust at the charging port:
Most people have encountered the situation that the charger is plugged
in but the mobile phone does not respond. Sometimes it may be a problem
with the mobile phone charger, but sometimes it may be a problem with the charging port.
Dust accumulation at the charging port is easily overlooked. Blocking
the charging port may cause the phone to become slower or unable to
charge. In daily use, you can put a dust plug or regularly clean the
charging port.
If you have any other questions about the cell phone charger, please feel free to contact us.
When we buying agaming headset, we always heard about the 5.1 channelsheadset and 7.1 channels headset, but what do they mean? And what is the different?
First, we have to know what is Sound Channel? Sound Channel: Sound
Channel is a mutually independent audio signal that is captured or
played back in different spatial locations during recording or playback,
so the number of channels is also the number of sources when the sound
is recorded or the number of number of speakers corresponding to
playback. In addition to the
channel, we also need to know the sound card. why? That's because the
number of channels supported by the sound card is one of the important
indicators for measuring the grade of the sound card, from mono to the
latest surround sound.
Sound Card: Sound
Card is also called audio card: it is the most basic component of
multimedia technology and is a kind of hardware that realizes the
conversion of sonic/digital signals.
Its
basic function is to convert the original sound signals from
microphones, tapes and optical discs, and then output to sound equipment
such as headphones, speakers, amplifiers, recorders, etc, or make a
wonderful sound from the instrument through the Music Device Digital
Interface (MIDI).
Now
we all know the Sound Channel and Sound Card, then let us to know what
is Stereo surround sound, 5.1 channel and 7.1 channel! As
mentioned above, the number of channels and the number of sources when
recording sounds or the number of speakers corresponding to playback are
related. So Let's take a look at the relationship!
Mono: Mono
is a relatively primitive form of sound reproduction. It mixes audio
signals from different orientations and records them by the recording
equipment, and then plays back by a speaker. For
example, a concert recording, the different instrument sounds coming
from all aspects of the stage, are received by a microphone (or received
by several microphones and then mixed together), combined into an audio
current and recorded. The sound is also emitted by a speaker during
playback. So We can only hear the comprehensive sound of different
instruments in all directions, but we can't tell which direction the
instrument sound comes from.
Stereo Sound:
Two channels have two sound channels,
and the sound is assigned to two separate channels during recording.
When the sound is played, two speakers at an angle are placed in the
space, and each speaker is individually provided with a signal from one
channel. When people hear the sound, they can judge the specific
position of the sound source according to the phase difference between
the left ear and the right ear. This
technique is especially useful in music appreciation, where the
listener can clearly distinguish the direction in which the various
instruments come from, making the music more imaginative and closer to
the spot.
5.1 Channel:
The 5.1 channel usually has 6 sounds and 6 different signals. 5.1 indicates that there are left main channel, right main channel, center channel, left surround channel, right surround channel, and bass channel. Give us a sense of three-dimensionality. 5.1
channel the sound system comes from 4.1 surround, except that it adds a
center unit. This center unit is responsible for transmitting sound
signals below 80 Hz. It is beneficial to enhance the human voice when
watching the movie, and concentrate the dialogue in the middle of the
entire sound field to increase the overall effect.
7.1 Channel:
7.1 channel has two surround channels more than 5.1 channel, 7.1 channel has four surround channels, left front surround, right front surround, left rear surround, right rear surround.
The main expansion and the bass are the same, the difference is around
the top. To put it simply, a sound field with a relatively balanced
front and rear sound field is built around the listener, and the rear
sound field channel is added. At
the same time, it is different from the ordinary 6.1 channel sound
field, because the 7.1 channel has two-way rear center, and the maximum
effect of the two-way rear center is to prevent the listener have a
acoustic field deviation because they are not sitting in the best
position.
Now you know what is 5.1 channel and 7.1 channel? If you have any other questions, please leave a message for me.
