What is the audio frequency range

As all of you probably know, that the range of the audible frequencies’ spans from the 20 Hz to 20 kHz. Just like every device is different, every human ear is different, and the audio spectrum of every one of us is different. This means that not all of us hear the same sounds or all the sounds. Some of us will hear much more deeper or higher sounds than others, but, on average, we can all hear the sounds within the mentioned spectrum.

The frequencies below the 20 Hz are extremely deep. They are, in fact, so deep that they are hardly audible. Experts love to say that they are more felt than heard thanks to their great vibration amplitude. On the other hand, frequencies above the 20 kHz are so high that they can cause severe hearing problems as well as hearing loss. The high sounds are actually considered noise, or simply the nebulous sounds.

As far as 20 Hz – 20 kHz spectrum is concerned, we can even divide it into the various frequency bands that affect the sounds in different ways. The bands we are talking about are sub-bass, bass, mid-range, low mid-range, upper mid-range, highs, and lower treble.

What is Digital vs analog audio

Audio Recordings comes in two types: Analog vs. Digital audio, which refers to the sound recorded using the methods that replicate the original sound waves. A signal of an analog audio is an electronic copy of an original audio signal as found in nature. Analog copies of any original sound suffer from a degree of signal degradation, called generation loss and signal strengthen lessens. Moreover, in the digital domain, this noise and signal degradation can be eliminated.

Analog Audio: Analog audio splits sound into the “left” and “right” components, which is called the stereo sound. Therefore, if you only have three speakers which are connected to your sound system, then you can use this RCA connection and get a great sound. As far as the quality part is concerned, most people will not be able to tell the difference between a sound system connected by digital with three speakers and the red and white analog system.

Digital audio: Digital audio transmits Dolby digital which can support front center, left and right speakers as well as the rear right, left and center speakers. Therefore, you have a full surround sound system with 5 or more speakers you want to use digital sound. If you use the analog red and white cables, you will not get the full effect of your sound system.

How to use rechargeable batteries efficiently and its benefits

Batteries are often a household necessity, which is used for the everyday items which includes your television remote, your children toys and kitchen clock.

So, here are some of the major benefits of using rechargeable batteries and to use it efficiently:


There are two main types of rechargeable batteries, with the nickel-metal hydride variety being the most environmentally wise choice. Even in this in mind, nickel-cadmium rechargeable batteries are still a better choice than disposable batteries.

Saving Money

As of now in today’s era, investing in a battery charger and various rechargeable batteries will be more expensive than just purchasing a pack of disposables. Moreover, it is important to look at the long term to see how using a rechargeable system, can save you with plenty of money.

Convenience Factor

Switching to rechargeable batteries provides with a much more convenience from many aspects. Many battery chargers can accommodate a wide range of sizes of batteries all with one device.

Time Efficient

Rechargeable batteries can be a great time saver in many of the scenarios. Never again, you will waste time in the battery aisle trying to accommodate the needs of your devices or miss photo opportunities at a special event or occasion because your battery has died.

What is Bluetooth?

Bluetooth is a technology of a wireless connectivity that uses low energy radio waves to send wireless data between Bluetooth enabled devices. It is much more similar to the Wi-Fi in that it operates over radio waves. Moreover, Bluetooth can work between any two enabled devices and does not require any additional network equipment such as modems or routers, which makes it a popular choice for sending data between the mobile electronics over close ranges. Bluetooth most of the time works over a max. distance of around 164 feet between devices, but that range is more than enough for many homes, health, care, and consumer electronics applications.

Advantages of Bluetooth Technology:

  • The power consumption of the chip is low, at around 0.3mW, which makes it possible for the least utilization of battery life.
  • It guarantees security at a bit level. The authentication is controlled with the help of a 128bit key.
  • It is even possible to use the Bluetooth for both the transferring of data and verbal communication as Bluetooth can support data channels of around three similar voice channels.
  • It overcomes the constraints of a line of sight and one to one communication as in other modes of wireless communications like infrared.
  • It removes the problem of radio interference by using a technique called the Speed Frequency Hopping. This technique utilizes the 79 channels of a particular frequency band, with each device accessing the channel for only around 625 microsecond that is the device must toggle between transmitting and receiving data from one-time slot to another.

What is IPXX

IP Rating means Ingress Protection Rating which is also known as International Protection Marking that represents a code that manufacturer is supposed to specify so that the client knows if the product is protected against the intrusions of solid-state particles or liquid particles.

The numeric rating helps people to take better care of the products they buy and to know how to store them in proper conditions. Most electronics manufacturers specify complicated detailed related to their products, but an IP Rating would be much easier to understand if people are informed about it. The IP code is a transparent tool that can help anyone buy products of better quality, without being misled by unclear specifications or jargon.

Ingress Protection is a standard rating recognized across the globe that anyone can use, regardless of their location. These electrotechnology standards are created to let people know what capabilities the casing of the product has from water to solid object protection. The code looks like this: the shot version of the Ingress Protection, which is followed by the two digits or the letter X. the first digit represents the resistance of the object against the solid objects, while on the other hand second represents the protection offered against the liquids. The letter X signifies that the product was not tested for the respective category.

What is waterproof and splash-proof

What is Waterproof ?

Waterproof devices are built to survive even the wettest conditions. The industry standard Ingress Protection(IP) rating system offers your device can handle not just a brief dunk in water but also complete submersion. Look for the IP68 waterproof phones to find the most reliable device to use in the water, in the rain or using in underwater.

What is splash proof?

Splash-proof, on the other hand, withstands splashed or sprinkles of water. Meaning, the devices, and products that are splash-proof are not totally safe from the water permeation.

How to identify if a device is waterproof or splash proof?

Some of the devices can be easily identified as either waterproof or splash-proof. Moreover, it is tough to check to know for sure which one your product is.

Every electronic device you buys has an Ingress Protection(IP) rating. It shows the water and dust resistance of any electronic gadget like the Bluetooth.

Developed by the International Electrotechnical Commission, the IP rating measures the critical data of our gadget today. This even complies with the IEC’s goals of facilitating international standards and conformity assessment and “enabling global trade.”