Apple wants to beef up graphic equalizers on idevices
TweetFollow Us on Twitter

Apple wants to beef up graphic equalizers on idevices

An Apple patent (number 20100202630) has appeared at the US Patent & Trademark Office for a method and system for approximating graphic equalizers using dynamic filter order reduction. It relates to media devices and, more particularly, to equalizer effects for media being presented on media devices.

Improved approaches to flexibly implementing graphic equalizers on media players are disclosed. These approaches provide dynamic order reduction of a multi-band graphic equalizer so that equalizer effects can be timely performed with only limited computational resources. In one embodiment, a media player receives a media item and associated equalizer settings for a multi-band graphic equalizer.

The media player can then automatically (i.e., without user action) approximate the multi-band graphic equalizer with the equalizer settings for the media item using a fewer number of filters. Fewer filters means order reduction, and thus reduction in computational requirements. After the multi-band graphic equalizer is approximated, the media player can present the media item to its user in accordance with the reduced complexity, approximated equalizer. The inventors are Aram Lindahl and Joseph Mark Williams.

Here's Apple's summary of the invention: "Media players, such as digital media players, are specialized portable computing devices that store and present (e.g., play, display) digital media (e.g., music, videos, or images). Often media players are small hand-held devices with limited media storage capacity and limited media management capability. As a result, media players typically associate with a host computer. The host computer can utilize an application resident on the host computer to perform media management for the host computer and the media player, such management including transfer of the media items and their attributes between the host computer and the media player. One such application is iTunes, produced by and available from Apple Inc. of Cupertino, Calif. An example of a popular media player is an iPod. which is also produced by and available from Apple Inc.

"iTunes can display a graphic equalizer for a user of the host computer. With iTunes, users can specify a set of equalizer settings by selecting one of a list of equalizer presets. Equalizer presets are equalizer settings for various frequency bands that are predetermined and available for selection by users. In addition, users can manually change the settings of a graphic equalizer to achieve a desired (e.g., custom) frequency response for particular media items. To a limited extent, equalizer settings for media items can be transferred from iTunes to the media player.

"Media players typically have limited computational resources and a small form factor. Consequently, there are difficulties with implementing a graphic equalizer on a media player. One prior solution involves manual conversion of predetermined equalizer settings for the equalizer presets to a simplified filter structure. Such a manual conversion can reduce computational requirements needed to implement the equalizer adjustments on the media player.

"Unfortunately, however, this prior solution based on manual conversion is time consuming and only effective when the equalizer settings are known and remain fixed. Since the equalizer settings must be fixed, the prior solution also does not support user manipulation of equalizer settings. Other prior solutions involve complex optimization algorithms and/or curve fitting of finite impulse response (FIR) filters. However, these approaches are computationally intensive and not guaranteed to find acceptable solutions, and the resulting filter is usually two or more orders of magnitude more computationally expensive than the original graphic equalizer. Thus, there is a need for improved approaches to flexibly implement graphic equalizers on media players with limited computational resources.

"Broadly speaking, the invention relates to improved approaches to flexibly implement graphic equalizers on media players. Media players are computing devices that are capable of storing and presenting (e.g., play, display) digital media (e.g., music, videos, or images). Media players typically have limited computational resources and are often portable or small in scale (e.g., hand-held). According to one aspect of the invention, dynamic order reduction of a multi-band graphic equalizer can be timely performed using only limited computational resources.

"In one embodiment, a media player receives a media item and associated equalizer settings for a multi-band graphic equalizer. In one implementation, equalizer settings (which are one type of quality setting) can be established for the media items on a media item by media item basis. The media player can then automatically (i.e., without user action) approximate the multi-band graphic equalizer with the equalizer settings for the media item using a fewer number of filters. Fewer filters means order reduction, and thus reduction in computational requirements. After the multi-band graphic equalizer is approximated, the media player can present the media item to its user in accordance with the reduced complexity, approximated equalizer.

"Graphic equalizers are used to shape audio frequency responses to a user's preference. The equalizer settings of a multi-band graphic equalizer can be provided to the media player from a host computer. In such case, each media item can have their own equalizer settings. Alternatively, each user can have their own equalizer settings. As an example, the host computer can transfer not only media items but also associated equalizer settings to a media player during a synchronization operation. In another embodiment, equalizer settings can be manipulated locally by a user of the media player. Local manipulation of equalizer settings can provide real-time equalizer adjustment at the media player.

"The invention can be implemented in numerous ways, including as a method, system, device, apparatus, or computer readable medium."

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

LooperSonic (Music)
LooperSonic 1.0 Device: iOS Universal Category: Music Price: $4.99, Version: 1.0 (iTunes) Description: LooperSonic is a multi-track audio looper and recorder that will take your loops to the next level. Use it like a loop pedal to... | Read more »
Space Grunts guide - How to survive
Space Grunts is a fast-paced roguelike from popular iOS developer, Orange Pixel. While it taps into many of the typical roguelike sensibilities, you might still find yourself caught out by a few things. We delved further to find you some helpful... | Read more »
Dreii guide - How to play well with othe...
Dreii is a rather stylish and wonderful puzzle game that’s reminiscent of cooperative games like Journey. If that sounds immensely appealing, then you should immediately get cracking and give it a whirl. We can offer you some tips and tricks on... | Read more »
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 »

Price Scanner via MacPrices.net

Apple refurbished 2014 13-inch Retina MacBook...
Apple has Certified Refurbished 2014 13″ Retina MacBook Pros available for up to $400 off original MSRP, starting at $979. An Apple one-year warranty is included with each model, and shipping is free... Read more
Macs available for up to $300 off MSRP, $20 o...
Purchase a new Mac or iPad using Apple’s Education Store and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free, and... Read more
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

Jobs Board

*Apple* Subject Matter Expert - Experis (Uni...
This position is for an Apple Subject Matter Expert to assist in developing the architecture, support and services for integration of Apple devices into the domain. Read more
*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
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.