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Audio Design Features

Prepare yourself for Geek Pride Day (May 25)

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Haptics startup rises from HiWave administration

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Electromagnetic Interference (EMI)

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Audio amplifier basics: Select the best topology for your design

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Android code shifts media jobs to Ceva

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Wolfson extends Samsung Galaxy audio deal

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Tips for increasing oscilloscope vertical resolution - Part 2

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Tips for increasing oscilloscope vertical resolution - Part I

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Analog and digital MEMS microphone design considerations

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Car infotainment to expand after soft growth in 2013

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Testing HDMI and MHL interfaces

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Car infotainment systems need multi-output power ICs

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Product How-To: Adding Class D audio to embedded systems in an unconventional way

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Performing audio synthesis, noise reduction in cars

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Delphi, NXP update deal with car radios

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Digital Data Locked Loops – Part 1

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Half of vehicles to include voice recognition in 2019

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DARPA to optimize bandwidth access for military, commercial use

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Space and Time: A continuum or conundrum?

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Audio line receiver impedance balancing using a 2nd diff amp

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Low self noise: The first step to high-performance MEMS microphone applications

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Automating communications measurement

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A new audio amplifier topology - Part 4: Noise in folded cascode stages

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Audio amplifier topology with push-pull transimpedance stage - Part 3: Experimental verification

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A new audio amplifier topology with push-pull transimpedance stage - Part 2: Biasing, stability and AC performance

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NXP offers automotive Class-D amplifier

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A new audio amplifier topology with push-pull transimpedance stage - Part 1: Introduction

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How to simulate cable in SPICE

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Voice input processing for automotive speech recognition systems

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Growing audio requirements in SoCs

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Surge protection—Stop fried electronics

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Achieving loud, rich sound from micro speakers

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Making sounds with analogue electronics - Part 10: Sequencing, recording, performing & example instruments

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Making sounds with analogue electronics - Part 9: Sampling in an analogue environment

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Making sounds with analogue electronics - Part 8: Early versus modern implementations

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Efficient amplification for real-world audio

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Power supply solutions for flat-screen TVs

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Design Type II compensation in a systematic way

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Making sounds with analogue electronics - Part 7: Topology of a typical synthesizer

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Integrating audio codecs in next-generation SoCs for smartphones and tablets

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Synthesize FIR filters using high-school algebra (Part 2)

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Generating spatial audio from portable products - Part 2: Acoustic beamforming using the LM48901

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The “Ins and Outs” of digital filter design and implementation

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Product How-To: Optimizing passive radiator acoustics using the QF3DFX processor

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Reference Designs

Products

High-density BNC male connectors target broadcast, telecom network apps

NKK adds brushed chrome to IP65-rated pushbutton series

Microchip expands embedded wireless portfolio with new Bluetooth, Wi-Fi, and ZigBee offerings

Econais rolls out Wi-Fi audio-streaming ref design

Converged Bluetooth digital radio module

Single-chip digital radio receivers support HD Radio and DAB/DAB+

Eight-channel PWM HD audio processor with dual asynchronous sample rate converters

Industrial strength PCIe/104 form factor A/V codec

Acoustic adhesive vent protects openings in portable electronics

Ohm’s Law iPhone app helps back-solve electrical power calculations

Smallest MEMS mic supports hearing aid apps, offers low EIN and power saving benefits

Audio processor IC slashes overall system cost for TV soundBar applications

Acoustic troubleshooting solution visualizes sound fields in 3D

NXP claims sound quality breakthrough with 9.5-V boost voltage in mobile micro speakers

Development board provides eGaN driver to speed designs of high frequency switching power conversion systems

Hirose develops halogen-free 0.5 mm pitch FPC/FFC connector

Gigabit Ethernet MAC IP with audio video bridging

Audio engines combine with high-performance MEMS mics for feature-rich sound

36.5mm x 22mm buzzer outputs up to 94 dB for alarm equipment

Sub-2.3ms latency wireless guitar jack claimed better than wired

DAC delivers high-quality audio in small package

Tiny audio transducer delivers 80dBA SPL

Software tool identifies RF spectrum IMD frequencies

Low-power audio codec combines class-D amps for speakers, Class-G for headphones

Audio codec enhances smartphone sound quality

Audio codec integrates single mic noise/echo cancellation

ADLINK launches PXI Express HDMI video, audio capture card

Add voice, sound clips, and streaming audio to embedded designs

5x5x2mm audio transducer delivers 80dBA of sound pressure level

Pre-configured DSP system for hearing aids

Two radio tuners integrated on single chip enable compact car radios

GainSpan simplifies wireless audio with audio app dev kit

Graphical audio development tool for SHARC processors

Top and bottom port silicon MEMS microphones with matching frequency responses

Airtight audio connectors for active loudspeaker manufacturers

Speaker housing gives big speaker quality in small form factor design

USB-to-I2S bridge chip brings plug-and-play simplicity to audio design

4 Billion CEVA-powered chips and counting

USB IP core combo pack from DCD

DAB 5.0 Software Development Kit

Commentary

Now in its seventh year, ARM TechCon is ranked one of the top three critical events in the embedded sector.

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Littelfuse's Speed2Design Exploration & Discovery program brings engineers behind-the-scenes at NASA's Ames Research and Johnson Space Centers.

Join  post comment   2 comments    last comment  Monkey_noise
I got all excited, filled in the registration form, then saw the rules...US only. :-( I'm UK
Upgrades that come too fast with too few new features are pushing consumers away from the every-18-months upgrade treadmill.

Join  post comment   3 comments    last comment  Frank Eory
There are numerous reasons an owner of an older iPhone should be interested in upgrading to an ...
Here's how one DIYer created a fully functional set of headphones using no traditional manufactured parts - just a 3D printer and a few raw materials.

Join  post comment   1 comment    last comment  WKetel
This is interesting. My understanding is that all 3D printing requires a 3D print of a design, which ...
Over the years I've seen a bunch of really great April Fools' day spoofs.

Join  post comment   52 comments    last comment  Frank Eory
I remember that WJ catalog with "vs. phase of the moon"! I think it was around '86 or '87. And yes, ...
An upcoming live event/webcast offers the opportunity to learn active loudspeaker design tricks of the trade from a variety of experts in the field, including Peter Eastty and Ian Dennis.

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A good working knowledge of applied DSP algorithms usually comes from word of mouth, design mentoring, and design experience that are a product of years of long hours, a lot of sweat, tears, successes, failures, hand-wringing, and a fair amount of banging one’s head against the wall…

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I reviewed this book here: ...
Day-by-day I am becoming more-and-more excited, because DESIGN West is racing towards us as we speak.

Join  post comment   2 comments    last comment  Max the Magnificent
LOL
Finding out the perceived frequency response of your combined headphone/ear 'system' and compensating for it using parametric equalization can offer some eye-opening benefits. But finding an EQ solution isn't always easy.

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Can Android devices or Windows phones have an EQ app for streaming? Definitely keep us posted when ...
EVs will soon have to make sound at low speeds. Your suggestions include some timeless classics.

Join  post comment   18 comments    last comment  William Miller
Agree. I voted for a moderate sounding exhaust system - not too loud, not too ...
Federal regulators want electric vehicles to make noise at low speeds. We want to hear from you about what EVs should sound like? Top nominees get a prize.

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How do you deal with a bicycle coming by just as you step off the curb? Bicycles are even quieter ...
I went to the 2013 consumer electronics show and all I got was another lousy remote control.

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Heh. Not an audiophile, eh? Stereo gear is hardly cheap or old. Middle of the road equipment, check ...
Just over a decade after the launch of the iPod, and a year after the decommissioning of the iconic Sony Walkman, I look back with nostalgia at the best Christmas present I ever got.

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The best present I have ever received was a Caravelle AM radio transmitter waaaay back in 1961. ...
Crowdfunding site Kickstarter has enjoyed yet another spectacular year of growth, with some incredible wins for engineering startups. Come and see some of the highest funded projects from 2012.

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You're right though, David, that I think Kickstarter projects need to give better time commitments. ...
How much blame should a CEO take, and how much should the company board?

Join  post comment   16 comments    last comment  CHARLIE.THOMPSON
Dave didn't see the shift to tablets. Wasn't ready.
Technology and safety regulation won't be in sync for years, but that means interesting telematics design choices in the coming years.

Join  post comment   7 comments    last comment  WKetel
First of all, over 80% of ALL accidents are caused by driver inattention of some degree. This does ...
Some recent audio-related items that caught my eye include a DIY laser microphone "spy" system, a video showing how to make sound waves visible, and a close-up look at the DAC inside the iPhone 5.

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Audio processing IC supplier got lumped after being left out of iPhone 5, but firm sees new era of voice command interfaces in electronics.

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Having seen Audience's technology demoed a couple of times, I have to say I don't think the firm ...
CEO Tunc Doluca has overhauled the analog company in the past 5 years. What's he worried about now?

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"Never base your design on parts not in production. You're asking for trouble. If you need prototype ...

A day without MEMS

Karen Lightman

What would happen if MEMS suddenly disappeared? Would we notice?

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Thank you gentlemen for the very engaging conversation on this whimsical take on a "day without ...

Man-from Mars Radio Hat

Clive Maxfield

Back in the 1950s, the Radio Hat was a portable radio built into a pith helmet that would bring in stations within a 20 mile (32 km) radius.

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"me and my engineering chum Rick Curl" My schoolteacher wife would cring. Does anybody proofread ...
The Pseudoacoustic Infector acoustic stimulator offers users the ability to "add bits of this and dashes of that" along with other "features" too numerous to mention.

Join  post comment   2 comments    last comment  robtmblood
Uh... While I WAS born in April, I don't believe we are AT April yet; especially not the First, ...
If you think finding good digital designers is tricky, try finding analog engineers.

Join  post comment   8 comments    last comment  Frank Eory
There seems to be a presumption that just because the industry migrated from bipolar to MOS that ...
When a museum display of the late analog engineer Jim Williams' engineering bench ended, the question loomed: What to do with it?

Join  post comment   6 comments    last comment  Brian Fuller2
@Simonb, I heard on Monday that whatever was left was packed up and deposited with Bob's widow. I ...
Here's the take on Apple's new EarPods - the earphones announced along with the iPhone 5 - including a teardown of the EarPods, initial reviews, and patent information.

Join  post comment   2 comments    last comment  Ryan Tennill
I may be an overly discriminating audiophile with a recording studio, and listens to $5000 speaker ...
Touchstone Semiconductor CEO Brett Fox (shown) is rapidly expanding the company's product line while eyeing potential competition with analog leaders like Linear and Maxim.

Join  post comment   4 comments    last comment  Work to Ride comma Ride to Work
He was let go. Probably too old.

Recent Comments

To Atmel: I can't begin the express how much I dislike the epithet 'Geek'. This word comes from ...
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Most Commented

Reader Message Boards

What is Apple investing $3.9 billion in?

By rick.merritt on 01.18.2011

Apple COO Tim Cook just finished a quarterly earnings call in which he said Apple has struck long term supplier agreements worth $3.9 billion over two years.

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last comment   02.08.2011  DrOctavius
My opinion is they've been investing and buying ARM's shares, to own the company :)

If you work in audio hardware design, I'm sure there are times when you've wanted to actually hear the results of a particular signal processing task -- to hear

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last comment   05.06.2011  goafrit
Congrats on the award

Looking for audio designer to design an updated amplifier/pre amp for a vintage electric piano. If interested, let us know and we can discuss details.

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last comment   05.03.2012  Concept2Reality
Well.....I see that it has been a couple of years since you posted your request, but I thought I ...

I am wondering how can we determine the class of amplifier just by looking at its operating voltage and current.

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last comment   07.25.2010  Bhola_#1
Thanks Dan for your informative comment. Yes, efficiency is a big factor since these devices goes ...

 

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Meet the Editor
The Audio DesignLine is edited by Rich Pell. Please contact rich.pell@ubm.com if you are interested in submitting a technical article or a guest blog.

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Read the Audio DesignLine Blog here.