Audio Design Features

SIGNAL CHAIN BASICS #69: Deliberately increasing THD in audio processing systems: How and why?

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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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The Relationship of Dynamic Range to Data Word Size in Digital Audio Processing

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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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ADC Guide, Part 7: ADC reference basics pt. 1

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A Primer on Jitter, Jitter Measurement and Phase Locked Loops (Part 2 of 8)

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

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Common Inter-IC digital interfaces for audio data transfer

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

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EMC Basics #15: Use gaskets to seal and solve leaky RF seam problems

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ADC Guide, Part 5: ADC non-linearity (DNL/INL) and monotonic transfer function

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Low distortion oscillator tests measurement circuits

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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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SIGNAL CHAIN BASICS #64: How a poorly designed 20W amplifier can destroy a speaker system

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Design Sallen-Key low-pass filters with G above 1, achieve lower output noise

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Design Type II compensation in a systematic way

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Book excerpt: Analog Circuit Design—A Tutorial Guide to Applications and Solutions, Part 3

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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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Book excerpt: Analog Circuit Design—A Tutorial Guide to Applications and Solutions, Part 1

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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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EMC Basics #14: Making plastic coatings work for EMI

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Analyze FIR filters using high-school algebra

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Calibrate a power supply with a digital potentiometer

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Prediction and negative-delay filters: Five things you should know

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Making sounds with analogue electronics - Part 5: Using analogue synthesis

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EMC Basics #13: EMC shielding--destroying a shield

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SIGNAL CHAIN BASICS #61: Clock jitter demystified–random jitter and phase noise, Part 2

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Generating spatial audio from portable products - Part 1: Spatial audio basics

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Making sounds with analogue electronics - Part 4: Voltage-controlled amplifiers

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ADC Guide, Part 1: the ideal analog/digital converter

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Top "Planet Analog" articles for 2011 (Part 2 of 2)

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Generate dual supply rails using a high-efficiency SEPIC-Ćuk converter

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Hi-fi digital audio streaming comes of age

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Reference Designs

Products

FCI's first USB 3.0 connector debuts

Microchip's new volatile digital-to-analog converter (DAC)

Near-field counters aid in device frequency ID

New low power TWELP vocoder delivers crystal clear voice performance

Microchip D/A converter targets automotive, industrial sectors

Audio analyzer features high functionality, low price

Audio device needs no MCU, enhances sound

HDMI video and audio capture card targets device testing

Mobile audio solution delivers more than five times the power to micro speakers

Class G stereo amplifier IC with digital I2S interface offers power saving benefits

Assembler optimized software libraries for TI DSPs

Low-cost, high switching frequency help Class D audio amplifiers reach broader markets

High-speed active-protocol bi-directional converters manage audio, video signals between DisplayPort and HDMI

Quad core HD audio processor SoC offers HD audio for smartphones and tablets

Bluetooth HCI module with antenna for automobiles

Enclosed PCB mount speakers deliver from 73 db up to 85 dB at 1 meter

Audio configuration switch IC detects headset type to ease system design

Noise-cancelling IC offers OEMs better audio quality in wireless headsets

Integrated power modules shrink PCB size up to 70% and simplify class-D amplifier design

Real-time debugging tools simplify audio system design

High-end platform for testing audio/ video interfaces on consumer electronics equipment

Audio codec for mobile devices provides echo, noise cancellation at wideband voice sampling rates to 16 kHz

VoIP processor first to integrates Intrinsic-ID's hardware intrinsic security IP

Digital voice scrambler for analog radio systems offers secure voice communication

Tact switch offers ultra-miniature LED illumination

R&S; modular platform tests A/V interfaces

Cisco validates Emerson 3U processor board for communications in defense apps

MathWorks Simulink supports Arduino, BeagleBoard, and LEGO MINDSTORMS platforms

Energy-measurement AFE integrates two 24-bit ADCs

Class-D amplifier device reduces distortion and prevents early phone software shutdown

Multi-chip MEMS microphone delivers 63dB SNR acoustic performance in a 2.5x3.35x1.0mm footprint

DSP-based AM/FM one-chip tuner drives car entertainment innovations

Flexible op amp design tool slashes product development time

Tact switch offers LED illumination, surface mount design

Sound-expanding IC yields audio analog of 3D for smartphones, tablets

Dual power booster adds serious muscle to op amp outputs

TI quiets the noise with 1-A power converter

TI’s new Audio Capacitive Touch BoosterPack for ultra-low-power MSP430 microcontrollers

Design software gets even easier to use

Green VoIP IC family addresses high end phones

Commentary

What if I were to find myself an old Webster wire recorder and load this spool, would I hear an ethereal voice saying something like…

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It's 10 p.m. Do you know where your venture capitalist is?

Join  post comment   1 comment    last comment  elPresidente
If we were smart, we'd encourage this, instead of being prudes about it. Keeps the VC money out of ...
This book, Mixed-signal Methodology Guide provides a broad overview of mixed-signal design, verification and implementation methodologies…

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Should high-end headphones and speakers be designed for "good sound" rather than for technical accuracy? One consumer audio blogger thinks so.

Join  post comment   35 comments    last comment  John33
Re: Optimum room dimensions. My research shows that the optimum ratio of room dimensions depends ...
Datasheets haven’t changed since the day of the vacuum tube. Why is that?

Join  post comment   24 comments    last comment  Battar
I'm happy with the current format. Am I the only one who isn't complaining?
Wow. Talk about alternative reality… or, should I say, revisionist history? I am talking about Intel’s recently launched ?Me The Musical’ campaign, which piggy- backs on Facebook.

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I feel the urge to dig out an old chestnut which was quoted by Nokia half a dozen or so years ago. ...
"Sonified" data from the Large Hadron Collider offers some musical - and some not so musical - interpretations on the sound of the "God particle."

Join  post comment   1 comment    last comment  EREBUS
It will never reach the top ten.
Student engineers (or hobbyists) can have their innovative audio hardware or software designs reviewed by a panel of pro audio manufacturers, product designers, and end users at this year's 133rd Audio Engineering Society Convention.

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Hi Bill, not sure of my plans yet. But I would not miss your presentations if I'm there!
A very small area is home to some of the most important Silicon Valley innovators. Why?

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Another Silicon Valley landmark that is not far from these PA locations is the former site of ...
Yours truly will be presenting five 1-hour sessions – one a day Monday through Friday – each starting at 2:00pm Eastern Time (which is 11:00am Pacific Time, or 7:00pm UCT/GMT).

Join  post comment   11 comments    last comment  Max the Magnificent
Both -- it's a "twofer" ("two for one" :-)
Extracting insight from mounds of data may benefit from using old techniques

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I was called in once by a power supply company that had a conducted emissions EMC problem on a new ...
It's all sensed switches and touch screens due to their benefits; but they have downsides as well.

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An hour ago I was talking to a guy who was trying to get his 12 year old oven fixed. The Maytag ...

Music out of the blue

Janine Love

I love Bluetooth. Little did I know, seventeen years ago when I was assigned my first project to write about the origins of Bluetooth and the viking that inspired the name that it would bring so much joy and convenience to my life

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I've heard the best of Bluetooth is yet to come. With the advent of Bluetooth Smart (Low Energy)... ...
Bob Dobkin, CTO at Linear Tech, will be signing copies of "Analog Circuit Design—A Tutorial Guide to Applications and Solutions" at Design West.

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Some interesting follow-up news items in the wake of Neil Young's recent comments about MP3s and the quality of digital audio include an argument against 24/192 downloads, guidelines for 'mastering for iTunes,' and a new adaptive HD audio format in the works at Apple.

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Monty's article on "Why 24/192 Music Downloads Make No Sense" should be a must-read for any ...
What would a 1980s pop star who was behind the technology used in two-thirds of mobile phones be doing keynoting at DESIGN West?

Join  post comment   2 comments    last comment  http://www.lulu.com/spotlight/poconoarmchairreview
I love the ad on this page: "The 80's called. They want their audio test equipment back." LOL.
The Intel Industrial Computer in Concert is a robotic orchestra, synchronizing a host of plastic and metal percussion instruments that ping, pong, bong and blink blue-hued light each time a nearby paint gun strikes them with a tiny rubber ball.

Join  post comment   3 comments    last comment  Patk0317
I too saw this at Embedded World (right outside of Hall 4). Pretty impressive! Go see it in San Jose ...
After listening to Supertramp on my iPad with headphones, I started pondering the idea of wireless loudspeakers, but which ones shouls I choose?

Join  post comment   22 comments    last comment  Max the Magnificent
I'm sorry -- I can't hear you -- my ears are still ringing :-)
Focusing on disruptive innovation, top university involvement in solving relevant problems, and customer validation of the projects at hand, TI hopes to gain a shorter cycle to product development.

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TI's Silicon Valley Labs has incorporated much of the former National Semiconductor NS Labs. ...
Debugging is hard; conflicting observations makes it harder

Join  post comment   19 comments    last comment  Andy Sergie
Have a look at my posting under Andy Sergie
Musician Neil Young says we need to save music from MP3s (and other lossy audio formats). But does music quality need rescuing, and is a new hi-res audio format the answer?

Join  post comment   52 comments    last comment  JamesTPDI
You are correct. I either miss remembered or the bit rate is not what it was from Amazon.
I just had a very unsatisfactory night’s sleep, because something kept on going “meep” and I couldn’t track it down…

Join  post comment   35 comments    last comment  David Ashton
There's a thought. Ser up a shooting range with old PCs as targets (you could use old CRT monitors ...
Any electronics engineer or technical person you speak to will know about Hewlett-Packard (HP) test equipment. And many of them will talk nostalgically of a certain item they have owned or worked with. I’m certainly like that.

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The decision on HP vs. Agilent was pretty simple. It was determined that it would be much easier to ...
For a split second on a recent test drive, I felt they had.

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I think you did a fantastic job of reviewing the car as an electronics editor. It did not bore me to ...
There are quick ways to separate the real techies from wannabes

Join  post comment   134 comments    last comment  zacke
If you have to make a quiz like that you are uncertain of your own skills rather than the ...
How does today's do-it-yourself experimenter situation compare to "back in the day"?

Join  post comment   37 comments    last comment  DrDagor
Agree with the "best of times / worst of times" view. And it's true not just of DIY but of ...

Recent Comments

The varied approaches will require separate techniques for optimizing performance and battery life ...
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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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