Apple eyes ways to improve speakers on portable devices
TweetFollow Us on Twitter

Apple eyes ways to improve speakers on portable devices

Apple is working on ways to improve its speakers, especially on its small, mobile devices such as the iPhone. An Apple patent (number 20120128190) for a gas filled speaker volume has appeared at the U.S. Patent & Trademark Office.

Per the patent, a speaker enclosure includes a gas cavity and an air cavity separated by a flexible membrane. A diaphragm is located roughly in an opening of the enclosure surrounding the gas cavity and attached to the enclosure by an outer suspension member. The enclosure, the flexible membrane, the diaphragm, and the outer suspension member are gas and air impermeable. The enclosure surrounding the air cavity has a vent hole to allow air to travel into and out of the air cavity for barometric pressure equalization of the gas cavity.

Here's Apple's background and summary of the invention: "n most speaker systems, a vibrating diaphragm is mounted at an opening of a speaker enclosure. A common type of speaker enclosure is a sealed enclosure. In a sealed speaker enclosure, the diaphragm compresses air in the enclosure when it moves in and rarefies air when it moves out. In smaller speaker and enclosure designs, substantial back pressures are exerted against the vibrating diaphragm by the air within the enclosure.

"This back pressure retards the movement of the diaphragm and degrades the quality of the sound being reproduced. To effectively enlarge the volume of the speaker enclosure, the air within the enclosure can be replaced with a gas that is less dense than air.

"However, with mobile devices, the barometric air pressure surrounding the speaker enclosure can decrease or increase abruptly, for example when the user is riding in an elevator. This will result in a net force being exerted on the diaphragm of the sealed speaker system, causing it to "stick" and therefore stop producing sound until the pressure inside the speaker has equalized with the barometer pressure (due to leakage).

"In air speaker systems, such barometric equalization is achieved relatively quickly (in order to prevent noticeable sticking of the diaphragm), by adding a small vent hole to the enclosure (at the expense of a small amount of sound quality degradation). This solution however will not work for an enclosure that is filled with gas and no air.

"A speaker system for enlarging the effective volume of a speaker enclosure is described. The speaker system includes a speaker enclosure having an interior partition to separate a gas cavity and an air cavity. A diaphragm is located at an opening of the enclosure surrounding the gas cavity. The gas cavity is filled with a gas that is less dense than air (e.g., helium or hydrogen) to effectively enlarge the volume of the gas cavity.

"The interior partition separating the gas cavity and the air cavity has an opening that is sealed by a flexible membrane. The enclosure surrounding the air cavity has a vent hole to allow the surrounding air to travel into and out of the air cavity.

"As the air pressure surrounding the speaker enclosure decreases, the gas inside the enclosure will be allowed to expand. The flexible membrane between the gas cavity and the air cavity may allow the gas to expand without significantly increasing the net force on the diaphragm as the vent hole will allow air to travel out of the air cavity. Similarly, when the air pressure surrounding the speaker enclosure increases, the gas within the enclosure will be allowed to contract.

"The vent hole will allow the air to travel into the air cavity, and the flexible membrane will allow the gas to contract without creating a vacuum on the diaphragm. Therefore, there is very little pressure change on the diaphragm when the barometric pressure changes."

Ching Yu John Tam is the inventor.

Along the same line is patent number 20120128189, which involves an integrated speaker assembly for a personal media device. Systems and methods are provided for media devices including a housing, a frame disposed adjacent to the housing, and an acoustic source that is integrated with the frame for emitting sound from the media device.

Here's Apple's summary of the invention: "The invention, in various embodiments, addresses deficiencies in the prior art by providing systems, methods and devices that enhance the ability of the acoustic source to withstand physical stresses and enhance sound quality while respecting the need for a compact and portable form factor for such devices.

"In various aspects, the invention employs an acoustic source, e.g., a speaker assembly, in a media device. The acoustic source is integrated with at least a portion of the frame of the media device. Because a frame provides structural support for the media device, the frame generally has greater structural strength than, for example, a housing or internal circuit board of the media device.

"By integrating the acoustic source with a frame having greater structural strength and integrity, the ability of the acoustic source to withstand physical stresses or vibrations is enhanced. The term 'integrated with' may include integrally formed with, unitarily formed with, attached to, detachably connected to, mounted on, or any like permanent, semi-permanent, or temporary configuration whereby the acoustic assembly, or a portion thereof, is in physical communication or contact with the frame of the media device.

"In one aspect, a media device includes a housing, a frame disposed adjacent to the housing, and an acoustic source that is integrated with the frame for emitting sound from the media device. The frame may be disposed substantially within the housing. The frame may include a sidewall or plurality of sidewalls. At least one sidewall may include an aperture in acoustic communication with the acoustic source.

"The frame may include a backplane. A portion of the acoustic source may be positioned substantially on a top surface of the backplane. A portion of the acoustic source may be enclosed within an upper casing where the upper casing is attached to the frame. Also, a portion of the acoustic source may be positioned substantially on a bottom surface of the backplane. A portion of the acoustic source may be enclosed within a lower casing where the lower casing is attached to the frame. The frame may be connected to the housing using at least one gasket.

"Another aspect of the invention includes a method for manufacturing a media device. The method includes providing a housing, attaching a frame to the housing, and integrating an acoustic source with the frame. The integration may include inserting an acoustic source within a recess of the frame. In one feature, an upper casing is mounted to the frame proximate to the acoustic. In another feature, a lower casing is mounted to the frame proximate to the acoustic source."

The inventors are Richard Hung Minh Dinh, Tang Yew Tan and Derek Boyd Barrentine.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Kill the Plumber World guide - How to ou...
You already know how to hop around like Mario, but do you know how to defeat him? Those are your marching orders in Kill the Plumber, and it's not always as easy as it looks. Here are some tips to get you started. This is not a seasoned platform... | Read more »
Planar Conquest (Games)
Planar Conquest 1.0 Device: iOS Universal Category: Games Price: $12.99, Version: 1.0 (iTunes) Description: IMPORTANT: Planar Conquest is compatible only with iPad 3 & newer devices, iPhone 5 & newer. It’s NOT compatible with... | Read more »
We talk to Cheetah Mobile about its plan...
Piano Tiles 2 is a fast-paced rhythm action high score chaser out now on iOS and Android. You have to tap a series of black tiles that appear on the screen in time to the music, being careful not to accidentally hit anywhere else. Do that and it's... | Read more »
Ultimate Briefcase guide - How to dodge...
Ultimate Briefcase is a simple but tricky game that’s highly dependent on how fast you can react. We can still offer you a few tips and tricks on how to survive though. Guess what? That’s exactly what we’re going to do now. Take it easy [Read more... | Read more »
SoundPrism Link Edition (Music)
SoundPrism Link Edition 1.0 Device: iOS Universal Category: Music Price: $4.99, Version: 1.0 (iTunes) Description: ***Introductory price for a the first few days after launch - if you're reading this, get it while it's fresh out of... | Read more »
Pre-register now for hack and slasher An...
Fincon, which won Facebook's Studio to Watch award in 2015, has announced that pre-registration is now open for the massive 3.0 update for its award-winning hack and slasher Angel Stone. Angel Stone is a post-apocalyptic action RPG in which the... | Read more »
Google has named Piano Tiles 2 as its Be...
Google has named Piano Tiles 2, which launched back in August last year, as its Best Game of 2015. If you're yet to play it, now's a good time to do so. It's a sequel to the hugely successful viral hit Piano Tiles (Don't Tap the White Tile) but... | Read more »
Sago Mini Trucks and Diggers (Education...
Sago Mini Trucks and Diggers 1.0 Device: iOS Universal Category: Education Price: $2.99, Version: 1.0 (iTunes) Description: Drive a dump truck with Rosie the hamster! Pile dirt high and dig deep in the ground with diggers, cranes and... | Read more »
Day One 2 Journal + Notes (Lifestyle)
Day One 2 Journal + Notes 2.0 Device: iOS Universal Category: Lifestyle Price: $4.99, Version: 2.0 (iTunes) Description: **New Release Sale—50% off for a Limited Time!** Capture life as you live it. From once-in-a-lifetime events to... | Read more »
Pull My Tongue (Games)
Pull My Tongue 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: Meet Greg. A hungry little chameleon that loves popcorn! Help feed Greg by pulling his tongue through a series of fun puzzles... | Read more »

Price Scanner via MacPrices.net

Watch Super Bowl 50 Live On Your iPad For Fre...
Watch Super Bowl 50 LIVE on the CBS Sports app for iPad and Apple TV. Get the app and then tune in Sunday, February 7, 2016 at 6:30 PM ET to catch every moment of the big game. The CBS Sports app is... Read more
Two-thirds Of All Smart Watches Shipped In 20...
Apple dominated the smart watch market in 2015, accounting for over 12 million units and two-thirds of all shipments according to Canalys market research analysts’ estimates. Samsung returned to... Read more
12-inch 1.2GHz Retina MacBooks on sale for up...
B&H Photo has 12″ 1.2GHz Retina MacBooks on sale for $180 off MSRP. Shipping is free, and B&H charges NY tax only: - 12″ 1.2GHz Gray Retina MacBook: $1499 $100 off MSRP - 12″ 1.2GHz Silver... Read more
12-inch 1.1GHz Gray Retina MacBook on sale fo...
B&H Photo has the 12″ 1.1GHz Gray Retina MacBook on sale for $1199 including free shipping plus NY sales tax only. Their price is $100 off MSRP, and it’s the lowest price available for this model... Read more
Apple now offering full line of Certified Ref...
Apple now has a full line of Certified Refurbished 2015 21″ & 27″ iMacs available for up to $350 off MSRP. Apple’s one-year warranty is standard, and shipping is free. The following models are... Read more
Free GUI Speedometer – The Ultimate Digital D...
Miami, Florida based RMKapps has announced the official release of GUI Speedometer 1.0, their digital dashboard display developed for iOS devices. GUI Speedometer allows users to track their precise... Read more
FutureCalc: Ergonomic iOS Calculator App For...
London, United Kingdom based Independent software developer and entrepreneur, Hovik Melikyan has announced the release and immediate availability of FutureCalc 1.0, his new ergonomic calculator app... Read more
Save up to $600 with Apple refurbished Mac Pr...
Apple has Certified Refurbished Mac Pros available for up to $600 off the cost of new models. An Apple one-year warranty is included with each Mac Pro, and shipping is free. The following... Read more
Apple’s ‘Next Big Thing’ Drought And Mature M...
Apple’s first fiscal quarter 2016 financial results yielded both good news and bad news. In the positive column, Apple made another boatload of money, reporting record quarterly revenue of $75.9... Read more
Lifeproof NUUD For iPhone 6S, iPhone 6S Plus...
LifeProof NUUD was designed to defy more than the elements. It defies logic itself by combining legendary four-proof protection and screenless technology to survive mountaintop missions and seaside... Read more

Jobs Board

*Apple* Macintosh OSX - Net2Source Inc. (Uni...
…: * Work Authorization : * Contact Number(Best time to reach you) : Skills : Apple Macintosh OSX Location : New York, New York. Duartion : 6+ Months The associate would Read more
Computer Operations Technician ll - *Apple*...
# Web Announcement** Apple Technical Liaison**The George Mason University, Information Technology Services (ITS), Technology Support Services, Desktop Support Read more
Restaurant Manager - Apple Gilroy Inc./Apple...
…in every aspect of daily operation. WHY YOU'LL LIKE IT: You'll be the Big Apple . You'll solve problems. You'll get to show your ability to handle the stress and Read more
Simply Mac *Apple* Specialist- Service Repa...
Simply Mac is the largest premier retailer of Apple products in the nation. In order to support our growing customer base, we are currently looking for a driven Read more
*Apple* IOS / OS X Level 3 Support Analyst -...
Needed: Apple Support Analyst (OS X / IOS); 50k-60k/yr +…Horizon Technology Partners has an immediate opening for an Apple IOS / OS X LEVEL 3 Support Analyst. Your Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.