Category: Audio Tech

Neodymium speaker drivers are a type of magnet used in speakers to produce sound. They are made from a rare earth metal called neodymium and are known for their high magnetic strength and small size. This makes them ideal for use in speakers, as they allow for smaller and more powerful speakers to be produced.

The basic principle behind how neodymium speaker drivers work is that an electric current is passed through a coil of wire, which is suspended in a magnetic field. The current flowing through the coil causes it to move back and forth, creating sound waves. In a speaker, the coil is attached to a diaphragm, which amplifies the sound waves and sends them out into the surrounding air.

The use of neodymium in speaker drivers has several advantages over other types of magnets. One of the main benefits is their high magnetic strength, which allows for smaller and more powerful speakers to be produced. Neodymium magnets are also lighter and more compact than other types of magnets, making them ideal for use in portable speakers and headphones.

Excellent linearity

In addition to their small size and high magnetic strength, neodymium speaker drivers are also known for their excellent linearity. This means that they produce a clear and accurate sound, without any distortion or coloration. This is important for producing high-quality audio, as it ensures that the sound produced by the speaker is faithful to the original signal.

There are a few different types of neodymium speaker drivers, including ferrite, alnico, and ceramic. Ferrite neodymium magnets are made from a mixture of iron oxide and neodymium, and are known for their high magnetic strength and low cost. Alnico neodymium magnets are made from a mixture of aluminum, nickel, and cobalt, and are known for their excellent linearity and low temperature coefficient. Ceramic neodymium magnets are made from a mixture of ceramic and neodymium, and are known for their high magnetic strength and resistance to corrosion.

In conclusion, neodymium speaker drivers are an important component in speakers and headphones, as they allow for smaller and more powerful devices to be produced. Their high magnetic strength, small size, and excellent linearity make them ideal for producing high-quality audio. While there are a few different types of neodymium magnets, they all offer similar benefits and are used in a wide range of audio devices.

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Razer has stepped into the wireless earbud ring and is putting up a gaming offering for you mobile devices. The Hammerhead True Wireless uses a customized ultra-low latency Bluetooth 5.0 connection, according to Razer, The Hammerhead True Wireless delivers crisp, clear audio with a Gaming Mode reducing latency to just 60ms.

“The Razer Hammerhead True Wireless earbuds are the perfect wireless audio solution for mobile users,” says Alvin Cheung, Senior Vice President of Razer’s peripherals business unit. “Users will have rich, immersive lag-free sound for their movies, music and gaming, without wires to get tangled or snagged as they go.”

Mobile gaming wireless earbuds

13mm drivers with 20Hz to 20kHz frequency response for your mobile gaming audio. The battery life is not the greatest, only being 3 hours between charges. The buds are charged through the case like most wireless ear buds. 

Razers mobile app allows you to pair and customise the Hammerhead True Wireless earbuds, changing the voice prompt language or learn to use the touch gestures. Once paired, the Razer Hammerhead True Wireless will automatically connect to the paired device each time they are taken from the case. Priced at $100 they maybe you best bet for wireless gaming earbuds, if you don’t want to play to long.

Earbuds:

• Frequency response: 20 Hz – 20kHz
• Impedance: 32 ± 15% Ω
• Sensitivity: 91 ± 3 dB @ 1 kHz
• Max input power: 8mW
• Drivers: 13 mm
• Approximate weight: 45.0 g

Microphone:

• Frequency response: 300 Hz – 5 kHz
• Signal-to-noise ratio: ≥ 55 dB
• Sensitivity (@1 kHz): -42 ± 3 dB
• Pickup pattern: Omnidirectional

Touch controls:

• Music Controls: Play, pause, skip, previous
• Call Controls: Answer, reject, switch, end
• General: Pair, power, activate smartphone virtual assistant

Battery:

• Battery type: 275mAh rechargeable Li-Po battery Rated Capacity
• Battery life: Up to 16 hours (with included charging case)*
• Charge time: Up to 1.5 hours
• May vary dependent on usage

Range:

• Bluetooth wireless range: Up to 10m / 30 ft
  Compatibility
• Devices with Bluetooth audio capability
• Smartphone application available for Android and iOS devices

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So 360 degree virtual reality movies aren’t quite mainstream yet. I mean, who will to strap on a headset? Every time there’s another disappointing Justice League movie, but at least 360 degrees surround sound has long been a mainstay of not just movie theatres, but home theatres as well. Or a typical set up will be a sub-woofer, two, for bass and five or seven speakers surrounding the viewer to help the sound. Well, surround the viewer. 

Now, traditionally, the way this is worth is that depending on the surround audio encoding scheme used by the publisher, a device called a receiver would decode and playback discrete audio tracks for each speaker. That would correspond to the action on the screen, assuming a high quality mix. So the idea is that if you’re looking at the scene featuring a conversation, the voices will probably be coming mostly out of the center channel while the satellite speakers behind you focus on, let’s say, ambient background noise. 

Sounds as objects

This one track for one speaker paradigm has been powering surround sound systems for a long time and it’s worked pretty well. But we’ve increasingly seen a different method surround sound delivery both in theatres and on Blu ray. This actually based around encoding is objects and sound channels. The principle behind Dolby Atmos and d.t s x but hold on a minute.

Sounds as objects. OK, so it means that instead of each audio track corresponding to only one speaker, the tracks are encoded with data that indicate some location in space instead of a specific channel. So let’s say you’re watching a scene where a plane is flying overhead toward you instead of, for example, the tracks match to the front speakers getting quieter and the tracks for the back speakers getting louder. As the plane passes by, the plane’s engines will instead being coded as a spot and space above you that moves around in real time. 

Now, this may not sound like too much of a difference, but the idea here is that at most and setups scale very well traditional stereo setups had no way of knowing much more than distance from your couch about the physical placement of the speakers in your room. So results could be very inconsistent from a set up to setup. But because DTS X allow sales to be coated with location data like above the listener halfway between the screen of the chair and it gets the right hand wall rather than just right front speaker. 

A decoder compatible with these formats will then take this positional data and the specific speaker configuration into account to produce sound that’s more accurately reflective of were supposed to be in space. Whether it has five speakers propped up on two by fours around your computer to represent this data, or 50 professional  loud speakers in a LA cinema and even include support for sounds above you.

Sense of space and realism

Some of these traditional surround doesn’t offer at most supports up to one hundred and eighteen objects and DTS X supports an unlimited number of objects. And both technologies can work with your conventional 5.1 and 7.1 speaker setups with at most boasting support for up to thirty four speakers for home theater. Now that might sound excessive and it probably is, but more speakers will enhance a sense of space and realism you’ll get. 

Now, as for those of you who are taught to install speakers everywhere, you can find an empty spot on your wall or ceiling. There are a number of upward firing speakers that reflect off of your ceiling to simulate a real speaker above you, and you can even upgrade your existing power speakers just by plopping one designed to fire upward. 

On top of them, we check out the sound bar that uses this technique recently. Overall, Linus tactics and the effect was fairly convincing. Of course, like with a new standard, not everything is at moves or d.t s capable. You’ll need a compatible receiver, though. Fortunately, the technology is becoming more and more common on blu rays, streaming services and even game consoles.

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