heise-+-|-short-tests:-student-tutorial,-usb-management-tool,-grade-scanner

heise + | Short tests: student tutorial, USB management tool, grade scanner

Short Tests: Student Tutorial, USB Management Tool, Note Scanner Learning program: Medienwerkstatt Mühlacker learning workshop 10 USB management tool: USBDeview Note scanner: Capella-scan 9 Students in grades 1 to 6 practice with the learning workshop 10 independent math and German. The large pool of learning material also includes the first English and French vocabulary.

The freeware USBDeview from Nirsoft shows all USB devices that are or have been connected to a Windows PC. This enables monitoring of the USB ports. This is supplemented by command line commands and a speed test.

Capella-scan 9 digitizes sheet music very easily and has received a tidier user interface. Compared to the previous version, however, there are also steps backwards.

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zte-axon-20-5g-review

ZTE Axon 20 5G review

Introduction

The ZTE Axon family has a long-standing history of industry firsts. Now, they bring us the world’s first commercially available device with an under-display selfie camera, the Axon 20 5G. That’s something we’ve been waiting ever since the first notched phones arrived.

One would expect that such a breakthrough feature will be paired with top-notch hardware. However, ZTE wants to play it safe this time around, and the under-display camera has been coupled with a mixture of high-end and midrange hardware. But the main selling point here is clearly the display. If you are making rid of the cutouts, it only makes sense to use a proper display as well.

ZTE Axon 20 5G specs at a glance:
Body: 172.1×77.9×8.0mm, 198g; Glass front, glass back, aluminum frame.
Display: 6.92″ OLED, 1B colors, 90Hz, 1080x2460px resolution, 20.5:9 aspect ratio, 388ppi; Always-on display.
Chipset: Qualcomm SM7250 Snapdragon 765G (7 nm): Octa-core (1×2.4 GHz Kryo 475 Prime & 1×2.2 GHz Kryo 475 Gold & 6×1.8 GHz Kryo 475 Silver); Adreno 620.
Memory: 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM; microSDXC (uses shared SIM slot, up to 2TB).
OS/Software: Android 10, MiFavor 10.5.
Rear camera: Wide (main): 64 MP, f/1.8, 25mm, 1/1.72″, 0.8µm, PDAF; Ultra wide angle: 8 MP, f/2.2, 120˚, 16mm; Macro: 2 MP, f/2.4; Depth: 2 MP, f/2.4.
Front camera: 32 MP, f/2.0, (wide), under display.
Video capture: Rear camera: 4K@30/60fps, 1080p@30fps, gyro-EIS, HDR, 10‑bit video; Front camera: 1080p@30fps.
Battery: 4220mAh; Fast charging 30W, Quick Charge 4+.
Misc: Fingerprint reader (under display, optical); NFC; Sound on Display, under-display selfie camera; only 8GB/128GB available in Europe.The full-screen panel checks all the boxes – HRR up to 90Hz, HDR support, OLED, and 10-bit color depth. And it’s actually one of the biggest in town too. The display measures 6.92″ in diagonal, making the phone a bit unwieldy even for users with average-sized hands.

The mid-range part about this phone, though, is the chipset. The Snapdragon 765G offers 5G connectivity and more-than-adequate performance, and it is paired with 128GB of internal storage as a base configuration. The camera setup also leaves something to be desired as it doesn’t offer a telephoto camera, and the ultra-wide unit is just 8MP. Also, no stereo speakers.

So is this the typical first-gen product with its own quirks that need fixing, and people will pay the price of early adoption, or there’s a lot more to it than a huge, cutout-less screen? We’ll see.

Unboxing the ZTE Axon 20 5G

The handset comes inside a standard box containing the appropriate charger with the USB-A to USB-C cable used for charging and data transfer. As a bonus, ZTE has included a transparent silicone case and a 3.5mm to USB-C dongle since the phone doesn’t have a headphone jack.

huawei-freebuds-studio:-from-design-to-hardware.-a-record-breaking-project!-here's-what's-inside-the-headphones

HUAWEI FreeBuds Studio: from design to hardware. A record-breaking project! Here's what's inside the headphones

HUAWEI presented the his first over-ear headphones: the FreeBuds Studio. The American ban weighs on the head of the company which therefore wants to change its approach to the public. Hence the creation of an increasingly sophisticated ecosystem where the world of audio also fits. Let’s see how they were created from design to hardware trying to understand why they are so unique.

by Editorial team published , at 14: 01 in the Audio Video channel

Huawei

The headphone market remains today a segment of technology in which many brands have entered but where those historians continue to make inroads among users. A world a little? particular in which perhaps it is important to bring the user to ” trust ” the brand more than the true technical value of the product. HUAWEI has decided to enter this particular market with a straight leg alongside that of smartphones, tablets and PCs and thus expanding its range of action by experimenting on other fields including that of audio and headphones.

time to propose to HUAWEI users also an over ear version has arrived and for this reason the new ones have been released FreeBuds Studio with a completely different design from true wireless but which gives them they have taken the technical sector as dynamic noise cancellation. Actually they take what they did with the earphones and they remark it in a pair of headphones with pavilion.

In this case, however the design studio of the HUAWEI FreeBuds Studio was important as well as long and painstaking. Over the past few years, HUAWEI has created a fundamental research and development division in Shenzhen capable of developing new generation products that are not only in step with the times but that, in fact, can also anticipate them in some way. And the FreeBuds Studio are just one of these products.

HUAWEI: audio innovation

To date, in the world of sound, we are faced with to a paradox: it is easier to access a wide range of music through robust sound quality technologies. But it is difficult to ” encapsulate ” the purity of this sound while preserving all the details in order to be listened to by users. This is precisely why HUAWEI created its Audio division , trying to devote itself more effectively to the mission of delivering purer sound, without background distortion and distractions, for the best immersive experience possible.

To put all this into action, HUAWEI integrates chipsets, operating systems and digital devices capable of providing users an all-encompassing audio experience. Currently, there are three key series that relate to headphones : le True Wireless Stereo (TWS) , which have seen a progression of this type of headset from semi-open active noise cancellation to intelligent dynamic active noise cancellation. So the FreeLace series that earned recently the Pro version reaching an excellent reputation in the field of Bluetooth neckband headphones. And then the innovative smart glasses have created a new generation audio device capable of perfectly combining fashion and technology.

Now, HUAWEI has taken another big step in technological innovation and design experience by officially launching his first wireless over-ear headphones, the HUAWEI FreeBuds Studio . Headphones that boast HiFi-grade wireless audio performance, a revolutionary noise-canceling experience and intelligent interactive features. This is not just a pair of over-ear headphones, but also an audio companion that allows consumers to discover the world of digital audio.

First of all the design

Human beings first observed the beauty of the world, then extracted and explored patterns and proportions of such beauty . Exploring the origins of beauty has accompanied the development of human civilization over the centuries. With the development of technology, aesthetics have been incorporated into the relentless pursuit of beauty by countless thinkers. From the arts and humanities to everyday life, from grand architecture to technological products, the beauty of the product has become an integral part of every aspect of our life.

HAUWEI FreeBuds Studio precisely embodies the concept of geometric aesthetics with comfort. The new design was designed with comfort in mind. Strip away unnecessary decorations and let the ingenuity of the essential design appear, which means these noise canceling headphones are comfortable but also beautiful to look at.

Detail find out how the design by HUAWEI FreeBuds Studio is inspired by the gramophone. Just like the arm and turntable work together to play great music, HUAWEI FreeBuds Studio do exactly the same. The entire design of the ear cups is made of simple lines and circles, ready to eliminate complex shapes and structures, making the design very minimalist but capable of contemplating a complete look. Unique and particular then the outer shell of the ear cups which is coated with a matte metallic finish capable of giving an even more refined look. As mentioned in HUAWEI 7mm diameter stainless steel cylindrical arms are round and harmonious, ready to overturn the wide and flat design that instead we can find in competition headphones . The tonearm is connected and leveled with the ear cups, capturing the elegance of the classic gramophone. The design of the earcup and headband of HUAWEI FreeBuds Studio is undoubtedly premium and are above all distinguishable compared to other headphones on the market.

Comfort with the ergonomic pavilion

To further improve the comfort of the headphones, HUAWEI FreeBuds Studio adopt an ergonomic design that not only guarantees the comfort in using the headphones , but it also allows you to cover a much wider range as regards the different shapes of the users’ head. This clearly allows for relieved ear pressure even if you wear headphones for long periods of time.

Comfort in use is more important for over-ear headphones than in-ear headphones but it is also more difficult to design. Not only do we need to ensure that an important number of varieties of head shapes are taken into account, we also need to allow for the comfort of the ears and the top of the head.

The pavilions of the HUAWEI FreeBuds Studio have an internal diameter of 65 x 42 mm , a large space that allows more people with different ear sizes to wear them without feeling discomfort. The outer layer of the ear cushions has been made of protein skin and this guarantees them to be soft and therefore very suitable for human skin. Furthermore, the inner layer is made of nylon fabric and therefore very breathable and able to isolate noise well. Particularly know that the internal cushioning foam of the bearings earphones have undergone multiple density adjustments to evenly distribute pressure and provide an even wider support area, minimizing pressure on the ear and maintaining a greater degree of comfort even during very long sessions.

Detail then l Upper headband of the headphones which can maintain a high degree of flexibility and durability . This can be folded to the maximum for 150 degrees and may extend to 40 mm to fit multiple head shapes allowing more people to wear it safely. After thousands of pressure tests, experimenting with various ratios of materials that make up the ear cups, headband and head cushion, a final result was developed to provide a comfortable fit. HUAWEI FreeBuds Studio headband arms are made of stainless steel and angled with meticulous workmanship. The surface is treated with a high quality PVD process to achieve a subtle and delicate feel while maintaining high strength.

Quality audio with a high frequency response to 48 kHz

A higher frequency response means richer details and higher audio quality. Using professional acoustic components, HUAWEI FreeBuds Studio supports a response to very high frequency i.e. 4Hz – 48 kHz thus allowing the possibility of guaranteeing high resolution music with more details.

The headphones come with a custom unit. To achieve a higher frequency response, the diaphragm must be light but strong enough to accurately produce higher frequency sounds. HUAWEI for this decided to use a 4-layer polymer diaphragm from 40 mm on its FreeBuds Studio. This can provide wider frequency response and higher sensitivity so as to accurately present the original sound quality even at high frequency.

And not just because the decoder chip is essential for a digital audio system , responsible for converting digital signals to analog signals that people can hear. HUAWEI FreeBuds Studio are powered by a aud decoder chip advanced io commonly used in HD players . With higher dynamic range, the chip can effectively reduce audio signal distortion and background noise to provide pure and detailed sound.

However, what worries many users is the possibility that listening with wireless headphones does not allow to reach the maximum quality due to the audio signal that inevitably weakens and is also damaged during the non wired transmission . This is precisely why many music lovers prefer to transmit audio signals through a cable.

In order to fix the damage on the sound quality in the audio signal transmission process, HAUWEI FreeBuds Studio adopts specially created L2HC wireless audio coding and decoding technology in the laboratories of the Chinese company. This provides a speed of audio transmission up to 960 kbps and can really produce the fullness and rich detail of the sounds high quality originals at 96 kHz / 24 bit o 48 kHz / 24 bit, reducing signal damage effectively occurs in wireless transmission. Traditional wireless audio uses AAC technology, SBC encoding and decoding, and allows you to stream music to 44, 1 kHz / 16 Cd level quality bit. However, for higher quality music of 96 kHz / 24 bits, these technologies would cause damage to the audio source when encoding, decoding and transmitting music, which would lead to a noticeable loss of detail.

In order to solve these sound problems in the audio signal transmission process, HAUWEI FreeBuds Studio adopts the technology L2HC wireless audio encoding and decoding made just in Shenzhen by HUAWEI, and providing audio transmission speed up to 960 kbps, which is three times higher than the ACC. This technology can really produce the fullness and rich detail of the original sounds high quality a 96 kHz / 24 bit or 48 kHz / 24 bit, effectively reducing the signal damage that may occur in wireless transmission.

Dynamic noise cancellation: how it works

The noise canceling of the earbuds begins to meet user demands for a crystal clear music or communication experience in a complex environment. In this case, true wireless headphones have integrated into users’ daily lives even though consumers have gradually discovered that traditional active noise cancellation may not be perfect as the experience may differ from different scenarios. This is because the characteristics of each ambient sound are never the same and the noise canceling headphones generally use only the same set of noise canceling solutions to adapt to all noises. This leads to inaccurate cancellation in some relatively quiet or perhaps medium-high frequency environments, such as with the human voice and percussion sounds.

HUAWEI was not satisfied with the passive noise cancellation method using the physical earphone isolation or the active noise cancellation it generates an inverse sound wave using an algorithm. Over the years he has decided to explore new technologies for active noise cancellation by bringing the first dynamic earphones, the FreeBuds Pro together then at FreeBuds Studio.

We technically know that due to the physical characteristics, a headphone can achieve excellent noise cancellation in any scenario only through the physical sound isolation that allows it to block low penetration mid and high frequency noise and Active noise cancellation to eliminate strong low-frequency penetration noise. In this case HUAWEI FreeBuds Studio are equipped with a powerful noise cancellation system that allows you to reach a capacity up to 23 dB . In terms of physical sound insulation, they are based on the innovative structure of double layer sound insulation “TAT” and on the sound-absorbing ear cushions also double-layered, which at the same time guarantee sound quality and comfort, achieves a physical sound insulation effect up to 40 dB in the mid and high frequencies .

Here it is the outer layer of HUAWEI FreeBuds Studio is made of protein skin , soft and suitable for human skin, and capable of increasing comfort of the ear piece. The inner layer of nylon fabric guarantees breathability by blocking external noise. This includes a soft, sound absorbing sponge with an amount of cotton, density and hardness that is finely adjusted in the scientific process to form a comfortable ear cushion.

Both of them the pavilions of HUAWEI FreeBuds Studio are equipped with two microphones for noise cancellation. Among these, the external microphone collects the external noise and the internal microphone is instead positioned inside the earmuff near the headphone speaker hole, and allows you to collect the residual noise inside the ear canal in a more realistic way. The more noise detail is captured in the external environment and within the ear canal, the more accurately HUAWEI FreeBuds Studio generates an inverted frequency based on the actual noise environment to achieve precise and comfortable noise reduction.

For active noise cancellation, HUAWEI FreeBuds Studio adopts hybrid noise canceling technology. When Active Noise Canceling is enabled, it will utilize the capabilities of two high-sensitivity, high-signal microphones to noise inside and outside the headphones to cope with outside noise.

Another innovation that came with HUAWEI FreeBuds Pro concerns the new intelligent dynamic active noise cancellation technology , which combines the maximum cancellation performance of the noise and comfortable use. Here are several audio innovations to create a major intelligent dynamic noise cancellation system. We have a dynamic perception system and an acoustic data system . The former accurately recognizes the external environment of the sound field and the latter provides three noise canceling modes based on acoustic data and allows the headphones to automatically adjust the noise canceling mode according to the environment to achieve an experience reduction in different scenarios.

HUAWEI FreeBuds Studio has an integrated environmental sensor and a microphone system capable of forming a multi-scene perception system, capable of perceiving the state of ” activities and environmental positions for approximately 100 times per second . It can sense and learn the usage status of the user’s headphones, help the headphones to more accurately determine the scene the user is in, and guide the operation of the acoustic perception system to improve the accuracy of recognition of the sound environment, thus bringing a more intelligent dynamic noise cancellation experience.

In order to optimize the noise recognition algorithm , the Acoustic engineers in HUAWEI have selected a number of common locations for noise sampling based on data from users’ daily life experience: airplanes, subways, high-speed trains, taxis, buses, downtown, street noise, cafes and restaurants. In the laboratory, these sound data were analyzed and studied through artificial intelligence deep learning algorithms and finally an acoustic data system was developed to optimize the noise cancellation algorithms.

Thanks to the new technology, HUAWEI FreeBuds Studio is able to quickly identify the type of noise and automatically switch between noise canceling modes. Whether it’s a quiet office, a noisy cafeteria or an airplane with a roaring engine, the three noise canceling modes can adapt to the environment to achieve precise results.

Double antenna for one coverage 360 degrees and low latency Bluetooth

Each pavilion comes with two Bluetooth antennas to provide signal coverage to 160 degrees. The antennas can intelligently detect if a signal range is blocked and automatically switch to the other antenna ensuring a connection stable even in complicated conditions. In this case even if the smartphone is inside the bag or trouser pocket or still under strong signal interference such as in a station or airport, HUAWEI FreeBuds Studio will ensure complete signal coverage for a crystal clear experience. call or even uninterrupted music playback.

HUAWEI FreeBuds Studio is also equipped with four-channel connection and this allows users to connect the headphones to two devices at the same time without having to disconnect and reconnect them to make the classic switch. For example, the headphones can be connected with two smartphones. When the user listens to music or watches videos on one phone, they do not miss any calls received on another phone. It can answer the call directly with the headphones, while the music is automatically paused.

Finally HUAWEI FreeBuds Studio comes with a proprietary Bluetooth chip which has obtained Bluetooth 5.2 certification and has a low latency algorithm, providing a smooth experience for calls, but especially for games, online learning, meetings and audiovisual entertainment. On the game mode after entering in game, low latency mode will automatically turn on to lower latency to a minimum of 150 ms. As for the Cinema mode this works with traditional video apps to create system-wide latency optimization.