Wednesday, October 27, 2021

Great Articles about Headphones, Earphones and Portable Speakers


Golf course professionals know how to make life as easy as possible with the right methods, tools and materials. Here are 10 secrets from them to help you grow a great lawn with your own hands.

Sometimes one grass seems greener than another. And thicker. And much nicer and softer to the touch. Sometimes it can be frustrating when, despite the fact that you have spent a lot of effort and time on the care of the lawn in the country, to achieve the perfect result still failed. This is the case because agricultural university graduate landscapers and golf course maintenance professionals devote their entire lives to making it happen.

But even with the ever-increasing pressure and demand to grow a plot of perfect grass, golf course care professionals successfully save money on water and chemicals and still achieve excellent results. So says Tom Brooks, owner and manager of Carson Valley Golf Course in Gardnerville, who is recognized for introducing environmentally friendly practices to the golf industry.

A lawn that doesn't have to be cared for hasn't been invented yet (although we can now mow beautifully automatically thanks to robotic lawnmowers). Nevertheless, golf course care professionals and landscape design experts have managed to find 10 secrets that help you grow a beautiful lawn with your own hands, while reducing care efforts to a minimum. So, let's talk a little bit about how to properly mow the grass.

https://treblab.com/blogs/news/headphones-for-mowing-the-lawn

The best active noise cancelling headphones cut out most ambient noise. Wireless noise-canceling headphones from Sony, Bose, and Sennheiser do noise-canceling best. Thanks to serious engineering research, implementing the results in their headsets and improving ANC every year, with updates to the software and the headphones themselves. That's why these companies' headphones are in the top three (so far) of our top wireless noise cancelling headphones.

Bigger companies = bigger budgets = bigger opportunities. Unfortunately for the wallet, it is in the category of noise cancelling headphones, the rule, more expensive means better 💰, works almost always. It is better to avoid the Chinese and budget noonemes headphones with noise cancelling, especially the Chinese TWS headphones with active noise cancelling.

In a city environment with its noise pollution, a noise-canceling headset becomes an incredibly useful gadget. This top noise cancelling headphones includes proven models and interesting new products in all form factors, from TWS active noise cancelling headphones to more traditional full-size headsets. Only one wired noise-canceling headphone made it into this top list of noise-canceling headphones. There are almost none with good wired models in the "noise cancelling" category.

https://treblab.com/blogs/news/best-cheap-noise-canceling-headphones

In this rating we will consider the best headphones for swimming in the pool and not only in the pool. Headphones for swimming should be waterproof (of course :-P), have a secure fit and, preferably, good sound. In our country this segment (headphones in which you can swim) is poorly represented. Basically headphones for swimming pools are sold only abroad. In our latitudes the most popular headphones for swimming from Sony, they are the same player.

Let's look at the best options: a waterproof player for swimming, the same - headphones. And the compromises: wired underwater headphones and wireless headphones for swimming without built-in memory. Do not confuse earplugs, which are sold at any drugstore (there are those designed only for swimming, they are sold in sports stores) with "earplugs" for swimming.

It is the mp3 player for swimming or pool player combined with headphones that is the best option. Bluetooth does not spread in the water, so just wireless waterproof headphones will not work for diving.

https://treblab.com/blogs/news/best-waterproof-bluetooth-headphones

The best headphones for children are the ones with a volume limiter. It sets the upper sound threshold at a safe level for children's ears - 85 dB. At the same time, parents will be able to switch the volume to an unrestricted mode. About the differences between children's "ears" and how to choose safe, we tell in the article.

Features of children's headphones

It is easier for adults: they feel their volume threshold. But children's hearing is formed until 18 years of age, so you have to limit the sound to 85-90 dB, so as not to harm the ears. It is better for three-year-olds to wear headphones for less than an hour. Older kids - 2-3 hours a day. But regular headphones are not the best option, it is worth looking at children's models.

https://treblab.com/blogs/news/best-headphones-for-teenagers

In this TOP-5 we will consider the best price-quality combination of closed-ear headphones. These models provide good noise isolation, among other things, of course. In our rating of closed earphones presented only full-size models, because overhead headphones, even closed acoustic design, do not give such good soundproofing, that is, lose the main advantage.

In general, until 1968 all headphones were closed (since the beginning of the 20th century, when headphones as a class appeared, or rather became available). For half century nobody could even think about removing the caps of the capsules. 😉 So, considering the models below we, we can say, slightly "return to the roots".

https://treblab.com/blogs/news/best-closed-back-headphone



Wednesday, May 13, 2020

Basketball Trainings

This is a link - https://soundcloud.com/njlkzsaftslg/basketball-training
This is a useful content:

Dribbling

Top point guards dribble and control the ball as if it were on a string. Good technique is critical for a ball handler. You should dribble with your fingertips rather than your palm. Dribble with your head up so you can see the opposition and your teammates. Keep your body low and use your off-ball hand to help keep your defender at bay. Work on dribbling with both hands, so you'll be as comfortable going to your left or your right.

Passing

Great passers can see the whole court and anticipate where a teammate will go and what a defender will do. Mastering the basics is the place to start. Develop a two-hand chest pass, bounce pass and overhead pass so you can deliver the ball to your teammates in the best position for them to shoot or beat their defender. Steve Nash or Derrick Rose can dazzle you with a behind-the-back or a no-look pass. But those moves are not just for show; they provide a teammate the best chance to score.

Shooting

It's difficult to score if you can't shoot the ball effectively. As Better Basketball Coaching explains, shooting is something of an art form, and some players, such as Kevin Durant and Ray Allen, have a knack for it. But everyone can improve their shooting through proper technique and lots of practice. Proper technique includes squaring your body up to the target, shooting the ball with your fingertips, keeping your elbows from flying, putting backspin and arc on the shot and following through completely after letting the ball fly.

Rebounding

Although it helps to be tall and have jumping ability, rebounding is a matter of desire as well as ability. Charles Barkley was relatively small for a forward, but he was an outstanding rebounder. He had the ability to determine where an errant shot was likely to fall, the willingness to crash the boards relentlessly and the strength to block out taller opponents. Blocking out your opponent -- also called boxing out -- is one of the keys to good rebounding. To do it effectively, maintain your concentration and focus.

Defense

Even the best scorers go into shooting slumps. But you can always play good defense if you hustle and understand both individual and team defense. When you are defending a player, keep you head lower than his. Stay close enough to the offensive player to bother him -- but not so close he can blow by you with one step. Know your opponent's tendencies so you can dictate the direction you want him to move. Be aware of the other players on the court, so you can play help defense when a teammate loses his man.

Wednesday, February 19, 2020

Headphones: travel, cycling, noise-canceling

The best noise-cancelling headphones can help you slip into an audio nirvana, whether you're heading to work and trying to escape the sound of traffic and sniffling commuters, or you just want to get away from everything and dive into your favorite music at home.

https://treblab.com/blogs/news/noise-canceling-headphones-how-do-they-work

How to choose the best noise-cancelling headphones

We believe that noise-cancelling headphones are just as vital as your laptop, TV or mobile phone when it comes to tech that'll change how you live, work and play – especially if you have a long commute each day or a flight ahead of you. That means that choosing the right pair for you is important – the demands of a good pair of headphones for a flight are different to those you'll only ever use at home.

5 Best Travel Headphones Of 2019

We buy our own products and put them under the same testing methodology so that you can easily compare them. Unlike most websites, we do not get our products directly from the manufacturers, which means our units aren’t handpicked and actually represent what you would buy yourself. We spend a lot of time comparing the products side-by-side to validate our results and we keep them until they are discontinued so we can continually go back and make sure our reviews are always accurate.
Shopping for travel headphones can be a bit challenging. You usually want something that’s compact and lightweight without compromising on sound or good noise isolation. Thankfully, there are lots of good travel headphones to consider, from noise cancelling over-ears to the most compact truly wireless headphones. We’ve reviewed 230 headphones and below are our top five picks.
Many cyclists can’t imagine going out on their bikes without entertainment. Headphones give you the option to listen to music or podcasts while cycling. But not every pair of headphones is good for driving a bike. Some don’t fit well under a helmet, and some create too much wind noise. We present the best headphones for cycling in this guide.
https://treblab.com/blogs/news/best-wireless-headphones-for-cyclists

The world is now wireless and there’s no reason listening to your tunes shouldn’t benefit from advances in wireless tech. While riding in traffic with headphones can still be dangerous, new models allow more ambient sound or even use bone-conducting technology (the “buds” go on your temples, not in your ear canal), so you can hear more of what’s happening around you. That makes them good options for mountain biking, bike paths, and gravel roads in addition to using them on your trainer or in the gym. Plus, as earbud tech improves, the options for cycling are getting more durable and sweatproof, and coming with longer-lasting batteries, all while prices are falling.

Wednesday, December 4, 2019

Earphones and earbuds Articles - TOP and BEST

Who Makes the Best Headphones?
The truth is, the earbuds that come with iPhones and many new Android phones sound a lot better than they used to. Still, if you're serious about music, those plastic pods can only take you so far. The single best accessory upgrade you can buy for a new media player, smartphone, or tablet is a solid pair of headphones.
https://treblab.com/blogs/news/in-ear-vs-on-ear-vs-over-ear-headphones

With so many choices, ranging from inexpensive cans you can pick up at the local Best Buy, to budget-busting, finely tuned masterpieces, finding the right pair of headphones can be tough. But if you spend the time to pick the right pair, and you take good care of them, your headphones can easily outlive the device that's delivering your music.

https://treblab.com/blogs/news/bluetooth-speakers-under-100

Generally, headphones are able to reproduce richer low-end audio, since they have larger drivers than earphones and they don't rely on an in-ear seal to deliver sound. Some listeners also find headphones more comfortable to wear, and easier to put on and take off, than they do earphones. This naturally means that headphones are bulkier, and less suited to the gym.

https://treblab.com/blogs/news/wired-vs-wireless-headphones-which-is-better-for-you

Active noise-cancelling headphones use microphones on the earcups to measure outside noise and adjust the signal to cancel it out. It's an effective technology, but it depends on power for the noise cancellation circuitry to work.

https://treblab.com/blogs/news/top-6-better-and-cheaper-alternatives-to-every-beats-product

It's our mission to hook you up with a pair of great-sounding headphones – the best headphones money can buy, even when you're on a budget.

We encourage you to take a look at all the headphone lists here on TechRadar – however, if you're in a hurry and just want to find the best headphones your money can buy, you've come to the right place.

https://treblab.com/blogs/news/best-wireless-headphones-under-50-dollars

Headphones are made in a range of different audio reproduction quality capabilities. Headsets designed for telephone use typically cannot reproduce sound with the high fidelity of expensive units designed for music listening by audiophiles. Headphones that use cables typically have either a 1/4 inch (6.35mm) or 1/8 inch (3.5mm) phone jack for plugging the headphones into the audio source. Some stereo earbuds are wireless, using Bluetooth connectivity to transmit the audio signal by radio waves from source devices like cellphones and digital players.[4] Due to the spread of wireless devices in recent years headphones are increasingly used by people in public places such as sidewalks, grocery stores, and public transit. Headphones are also used by people in various professional contexts, such as audio engineers mixing sound for live concerts or sound recordings and DJs, who use headphones to cue up the next song without the audience hearing, aircraft pilots and call center employees. The latter two types of employees use headphones with an integrated microphone.

https://treblab.com/blogs/news/seven-simple-exercises-to-get-into-shape-by-treblab

Headphones are available with high or low impedance (typically measured at 1 kHz). Low-impedance headphones are in the range 16 to 32 ohms and high-impedance headphones are about 100-600 ohms. As the impedance of a pair of headphones increases, more voltage (at a given current) is required to drive it, and the loudness of the headphones for a given voltage decreases. In recent years, impedance of newer headphones has generally decreased to accommodate lower voltages available on battery powered CMOS-based portable electronics. This has resulted in headphones that can be more efficiently driven by battery-powered electronics. Consequently, newer amplifiers are based on designs with relatively low output impedance.

The impedance of headphones is of concern because of the output limitations of amplifiers. A modern pair of headphones is driven by an amplifier, with lower impedance headphones presenting a larger load. Amplifiers are not ideal; they also have some output impedance that limits the amount of power they can provide. To ensure an even frequency response, adequate damping factor, and undistorted sound, an amplifier should have an output impedance less than 1/8 that of the headphones it is driving (and ideally, as low as possible). If output impedance is large compared to the impedance of the headphones, significantly higher distortion is present.[11] Therefore, lower impedance headphones tend to be louder and more efficient, but also demand a more capable amplifier. Higher impedance headphones are more tolerant of amplifier limitations, but produce less volume for a given output level.

https://treblab.com/blogs/news/best-cheap-alternatives-to-bose-products

A headset is a headphone combined with a microphone. Headsets provide the equivalent functionality of a telephone handset with hands-free operation. Among applications for headsets, besides telephone use, are aviation, theatre or television studio intercom systems, and console or PC gaming. Headsets are made with either a single-earpiece (mono) or a double-earpiece (mono to both ears or stereo). The microphone arm of headsets is either an external microphone type where the microphone is held in front of the user's mouth, or a voicetube type where the microphone is housed in the earpiece and speech reaches it by means of a hollow tube.

https://treblab.com/blogs/news/earphones-vs-headphones

Wireless headphones and Bluetooth headphones

Another big feature to consider is Bluetooth, which allows headphones to wirelessly connect to mobile devices. Bluetooth headphones save you from having to deal with tangled wires and the risk of knocking them out your ears, making them perfect for the exercising, traveling and even just sitting at your desk. As well as wireless headphones, there are wireless earphones which are more discreet like Apple's Airpods and wireless in-ear headphones that are focused on sports and exercise. Aftershokz have gone one step further for sports performance with their bone conduction headphones, which allow you to keep your ears free and stay aware of your environment when you're running, biking or driving.

https://treblab.com/blogs/news/samsung-gear-iconx-vs-galaxy-buds-vs-treblab-z2

Headphones can prevent other people from hearing the sound, either for privacy or to prevent disturbing others, as in listening in a public library. They can also provide a level of sound fidelity greater than loudspeakers of similar cost. Part of their ability to do so comes from the lack of any need to perform room correction treatments with headphones. High-quality headphones can have an extremely flat low-frequency response down to 20 Hz within 3 dB. While a loudspeaker must use a relatively large (often 15" or 18") speaker driver to reproduce low frequencies, headphones can accurately reproduce bass and sub-bass frequencies with speaker drivers only 40-50 millimeters wide (or much smaller, as is the case with in-ear monitor headphones). Headphones' impressive low-frequency performance is possible because they are so much closer to the ear that they only need to move relatively small volumes of air.

Marketed claims such as 'frequency response 4 Hz to 20 kHz' are usually overstatements; the product's response at frequencies lower than 20 Hz is typically very small.[23] Headphones are also useful for video games that use 3D positional audio processing algorithms, as they allow players to better judge the position of an off-screen sound source (such as the footsteps of an opponent or their gunfire).

https://treblab.com/blogs/news/types-of-earphones


Friday, July 5, 2019

2019 Roofing Calculator - How to Measure and Estimate a Roof Like a Pro

2019 Roofing Calculator - How to Measure and Estimate a Roof Like a Pro

How to Calculate the Area of Gable End With a Roofing Slope
  1. Measure the width of the wall below the gable. ...
  2. Measure the height of the wall from ground level to the top of the eaves, the point where the lowest part of the roof meets the top of the side walls. ...
  3. Calculate the area of the wall below the gable by multiplying the width of the wall by the height of the eaves

How many square is my roof?

Roof surfaces are measured in “squares” – a “square” is equal to 100 square feet of the roof. To determine the number of squares on the gable roof above, divide its total of 24,000 square feet by 100 (24,000 ÷ 100 = 240). This means you would need 240 squares of shingles to cover that roof.
 
http://40daystosaveamerica.com/how-to-calculate-roof-area/

How do I figure out how many roofing sheets I need?

Multiply the length of the roof by the width to establish the surface area in square feet. For example, if the length is 21 feet and the width is 10 feet, the surface area is 210 square feet -- 21 times 10 equals 210. Determine the width and length of the metal sheets to be used.

How do you estimate roofing?

Steps
  1. Find the square footage of the roof. Measure the length and width of each portion of the roof, multiply length by width for each plane, and then add the planes together for the total square footage.
  2. Determine the total number of squares. ...
  3. Determine the bundles of shingles needed to cover the roof. ...
  4. Account for waste.

How do you determine the pitch of a roof in degrees?

If you know the angle of the roof in degrees you can find the roof pitch by converting the angle in degrees to a slope, then finding the rise by multiplying the slope by 12. First, find the slope by finding the tangent of the degrees, eg. slope = tan(degrees). Then multiply the slope by 12 to get the rise.