Sensitivity is how an earphone transforms an electrical signal into an acoustical signal efficiently. Sensitivity means how noisy the earphones from the source can be for a given amount. This calculation is given in Sound Pressure Level decibels per milliwatt, or dB SPL/mW. It could be seen as dB/mW in some instances and is based on a 1 mW input signal. One mW, or 0.001 Watts, is one-thousandth of a watt.

 A defined headphone's loudness is directly related to its impedance and sensitivity.

When learning about a headphone's sensitivity, since they are co-related, you can also consider the impedance.

Headphone impedance defines how much electrical resistance a headphone provides to an audio source's signal. A headphone that has an impedance ranging from 20-40 Ohms would make a fair option for a casual audience.

High-impedance headphones are less sensitive and can sound louder when used with the phones in the build amplifier. For this purpose, to drive and get better sound, higher impedance headphones would take more power.

Sensitivity Range

Earphone sensitivity is typically in the 80 to 125 dB SPL/mW range. An example is here. The sensitivity of one earphone is 122 dB SPL/mW. This means 122 dB SPL would be generated by 1 mW of electricity. This amount of SPL is above the pain threshold and can inflict lasting hearing loss within a brief period of time.

Level of Sound Intensity (SPL)

Measured in decibels (dB), it is the sound frequency that humans can detect and perceive a sound, while the human ear is not similarly receptive to sounds at the same level of sound intensity except at different frequencies (20Hz to 20kHz).

In the world of headphones, to create a high sound pressure level, most headphones won't require more than 1 milliwatt of electricity.

SPL output level

There is no linear sum of dB SPL; 2 mW in the earphone does not produce 244 dB SPL. Doubling the input power or halving it raises or reduces the SPL by 3 dB. 119 dB SPL will be produced from a .5 mW input into the earphone. A sensitivity level doesn't mean much unless it is balanced by an audio system's output capability. Using a low-sensitivity earphone will result in low SPL if a device has low-performance values. Due to amplifier clipping, increasing the amplifier frequency in this setup can lead to noisy audio.

Sensitivity Lower vs. Higher

We humans most commonly listen to a frequency of between 60 and 80dB, and 90dB for the audacious among us. Most headphones have a sensitivity level of around 100dB on average.

It ensures improved driver output without using too much power when a headphone is claimed to have higher sensitivity. Using a high sensitivity headset at high speeds, though, can also inflict harm to the drivers of the headphones and the ears. The sound may even get blurred at high levels, depending on the headset.

Headphones with low sensitivity are the opposite of headphones with high sensitivity. While they need more driving strength, these kinds of headphones are more reliable than those with greater sensitivity. This is because they do not harm the driver machine, except though supplied with more power.

In order to get better sound reproduction with lower sensitivity headphones, a high power supply system (headphone amplifier) would be needed.

So, is sensitivity an essential factor to look out for in a headphone?

Yes, it is! 

Also Read:

ONLINE LEARNING EFFECT ELECTRONIC DEVICE USAGE TO RISE

TOP 5 VIDEO CONFERENCING ONLINE MEETING APPS | ALTERNATIVES TO ZOOM APP

SMARTPHONE WINNERS OF EISA AWARDS 2020-2021

TOP 5 PHONES UNDER 50K IN NEPAL WITH PRICE AND SPECS

HOW CAN YOU MAKE YOUR HOME WIFI PRIVATE?

BEST SMARTWATCH AVAILABLE IN NEPAL

As more and more people are inching towards mobile games such as PUBG Mobile, Fortnite, COD Mobile, it is important to know what things in a phone make it stand out among the others and make it a worthy gaming phone. Here are the things which phone should have to give its user the best gaming experience :

Performance

This is probably the most important thing which separates a normal phone and a gaming phone. The SoC (System on Chip) is the thing that runs your games and your day to day apps. The SoC comprises CPU, GPU, and many such components. The better the SoC the better the phone will perform in the games. Having a 4GB ram is enough. Currently, the best SoC which is offered by Qualcomm is Snapdragon 865+(launched 2 months ago). Snapdragon 855 is more widely available. 

Screen

This is the thing you look the most while gaming and if it's not a good one, it'll ruin your gaming experience. A good screen comprises of 3 things:

Screen resolution: Gaming at high resolution will give you an edge over your opponent. 1080p is perfect as going beyond it will barely give you any advantage as human eyes will hardly notice a difference between 1080p and higher resolution. 

Type of screen: Having a phone with AMOLED display will enhance your gaming experience as it provides better contrast and vibrant colors compared to an LCD panel. Also, AMOLED panels are more efficient than LCD panels. Having AMOLED will also give you a better content consumption experience

Screen refresh rate: Higher refresh rate screens will provide smoother gameplay. The normal phones have a refresh rate of 60Hz. Currently, 90Hz has become common among devices and will smoothen your gameplay by a lot. But some devices even offer 120Hz which will enhance your experience even more. 

Cooling system

Gaming is a very intense and resource-heavy task for a device, which in return produces a lot of heat. Heat and electronics don't go well together. Also, a gamer holds the device for an extended period of time. So having a device that has a better cooling solution will help in performance and will also help the person holding the device. Many devices offer some sort of liquid cooling and a small number of devices even offer a fan!

Battery + Fast charging

Having a device with a large battery will significantly extend your gaming session. A device with a 5000 mAh battery is more than enough for a gaming session of about 4 hours+. A device offering fast charging will greatly reduce the time between your gaming sessions. Some devices nowadays even offer devices with 6000 mAh battery and blazing-fast 30 W charging. 

 

Also Read:

SAMSUNG GALAXY S20 5G FULL SPECS

ASUS ROG PHONE 2 PRICE AND SPECS

HUAWEI MATE 20 PRO PRICE IN NEPAL, FULL SPECIFICATION | REVIEWS NEPAL

XIAOMI REDMI NOTE 8 AND NOTE 8 PRO PRICE IN NEPAL | FULL SPECIFICATIONS

XIAOMI LAUNCHES MI 10 AND MI NOTE 10 LITE IN NEPAL | FULL SPECIFICATIONS, PRICE

TOP PHONES UNDER 50000 IN NEPAL 2020 (UPDATED) | SPECS - BEST MOBILES..

Do you want to enrich the look of your living room with a beautiful TV? Or, are you in need of one and don't have proper knowledge about TV and how to choose an appropriate one? If you are looking for basic knowledge or tips to consider while buying a TV, then keep on reading. 

The trend of TV has been somehow decreasing due to the advancement of smartphones and the internet for the past decade. However, TV nowadays is as smart as smartphones with a bigger screen and better customer experience. Buying a Television for your home can be stressful with all the budget that one has to pour into it. Here, are few things to consider while buying a TV that'll cool your stress down.

Size

Bigger the size, the fancier the TV, and the better the user experience. However, one must not forget the capacity of the room. Measure the dimensions of the room and thoroughly examine the size of the TV that you require for your room. You might regret buying a 55-inches bigger, fancier TV if you have a small room of just 7-ft height and 8-ft length. So, select the size that is suitable for your room. 

Viewing distance

Viewing distance, when put straightforward, is the distance from the TV that must be kept in order to prevent any kind of stress in your eyes. Normally, a distance of 4-ft is a must if you're buying a 32-inches LED TV. And, for TV with 40-48 inches, a viewing distance of at least 7-ft is a must. Likewise, for 55-inch or 65-inch LED TV, a 9-ft viewing distance is needed.

Resolution

For better viewing experience, the resolution should be considered. If you are looking TV for normal usage like for watching news once or twice a day, and are short on budget, then you can go for a 720p resolution. Nevertheless, if you have enough budget and use the TV for gaming, watching movies, Netflix, etc., then don't settle for less than 1080p i.e. FHD. If possible go for UHD, or else go after FHD.

Audio Output

TV must have a good screen with good visuals, but the audio output of the TV should also be checked. Budget TV may have a pleasing display but the audio output may be a disappointment. So, try to get a soundbar speaker to enrich your experience with better sound quality.

Connectivity Options

The more connectivity options better the experience. If you want to use the TV for other purposes like gaming, watching movies, etc., then look out for other connectivity options like HDMI, USB port, 3.5 mm audio jack, and other AV ports. Also, the presence of Bluetooth connectivity will be an advantage.

Refresh Rate

Refresh rate means the number of times the picture on the screen gets refreshed within a second. The higher the refresh rate is smoother the video appears. Go for TV with a refresh rate between 60Hz to 120Hz.

Contrast

The contrast ratio describes the range of brightness levels your TV can display. Better the contrast, better the brightness levels. There are different ways of measuring the contrast ratio; so, check thoroughly while looking out for contrast.

Smart TV

Not all 'smart TV' is smart. Some smart TV offer variety of apps and features, whereas some lack in such apps. Better go after the Google-certified or android-certified Smart TV that offers a variety of features including play store, voice assistant, etc.

 

Also Read:

THINGS TO CONSIDER WHILE BUYING A REFRIGERATOR

THINGS TO LOOK OUT FOR WHEN BUYING A GAMING SMARTPHONE

TOP 5 HAIR STRAIGHTENER IN NEPAL | 2020

BEST ONLINE SITES FOR ELECTRONIC GADGET PURCHASE IN NEPAL

XIAOMI UNVEILS THE SMART TV CATEGORY IN NEPAL WITH MI TV 4X (55) AND MI LED TV 4A PRO (43)

DIFFERENT TYPES OF VACUUM CLEANERS AND THEIR FUNCTIONS

Increasingly, high-end smartphones sport blazing-fast 90Hz and even 120Hz refresh rate screens. On paper, this looks amazing. It's yet another way in which smartphones strive to separate themselves from each other. But can you purchase a phone because of this new trend in display technology? It depends frankly.

The advantages of phones with a high refresh rate and even how they function are rarely well known. Although games and content can look much better, it depends a lot on the customer and the smartphone whether it's worth the extra battery usage. With all that insight, here's what you need to learn about refresh rates.

 

What is Refresh Rate?

The refresh rate is a measure of the number of times a screen redraws an image. In basic terms, a higher refresh rate means less motion blur and a much smoother picture of the picture. Most smartphones today are packed, regardless of the price, with 60Hz displays. It is measured in Hertz. A 60Hz screen refreshes 60 times per second, 90Hz is 90 times per second, and 120Hz is 120 times per second. So a screen of 120 Hz refreshes twice as fast as a screen of 60 Hz, and 4x faster than an old 30 Hz Television.

The screens aren't static. On the screen of your phone, text and motion look seamless since each pixel changes to show the new content from the processor of your smartphone. But this doesn't happen spontaneously. At frequent intervals, known as the refresh rate, panels change their content.

Faster upgrade times often result in lower lag, as the pixels are updated more regularly. For comparison, a 60Hz screen takes 16.6 ms to completely refresh, 11.1ms for 90Hz, and only 8.3ms for a 120Hz rate. The refresh rate is not the only component in the latency of the round-trip display, but it is the main contributor.

Not all 120Hz smartphone displays are produced in the same way, which is why

Your smartphone's screen doesn't refresh all at once per period though. Instead, before the entire monitor changes at the appropriate rate, each horizontal row of pixels refreshes in turn. When you record a screen in slow motion, you can see this in effect and it's the reason why screens flicker if you view them through the viewfinder of your mobile camera. In other words, the display is continually updated and loading, but it takes time for one full update to complete the loop.

 

Should I get a phone with a high refresh rate?

In modern smartphones, especially in the premium market, 90Hz and 120Hz displays are increasingly popular. In inexpensive mid-tier handsets as well, the role is also increasingly available.

That being said, a small part of the display specs of a smartphone is the refresh rate. It's obviously not a big enough attribute to focus the whole purchase on. Ultimately, factors such as color gamut, contrast, white temperature, and resolution have an equally significant effect on the screen output of your phone.

 

If you still have your heart fixed on a higher refresh rate, here are only a couple of the best 90Hz or 120Hz displays for rocking phones:

Samsung Galaxy S20 5G – 120Hz display

OnePlus 7T – 90Hz display

Realme X50 Pro 5G – 90Hz display

Asus ROG Phone 2 – 120Hz display

Google Pixel 4 XL – 90Hz display

Also Read:

SAMSUNG GALAXY S20, S20+ PRICE IN NEPAL, SPECS 

SAMSUNG MAY DISCONTINUE HIGHEND GALAXY NOTE SMARTPHONES

NOKIA'S OLD ICONIC PHONES RELAUNCHING TREND CONTINUES

XIAOMI PATENTS TWO SMARTPHONES WITH WRAP-AROUND DISPLAY

TOP UTILITY APPS FOR ANDROID PHONES

IPAD AIR (2020)- PRICE, SPECS, AND EXPECTED PRICE IN NEPAL