Feeds

Bluetooth headsets to get dual mics

Aussie developers use secondary mics for noise suppression

Build a business case: developing custom apps

Adding a second microphone to a Bluetooth headset significantly improves its ability to capture speech by making it more effective at noise cancellation and suppression, according to Australian audio software developer Dynamic Hearing.

The company has added a multi-mic feature called VoiceField to its Atlas audio processing software for CSR's Bluetooth silicon. VoiceField uses two microphones, one in the usual place to capture the user's speech, and the other located elsewhere to pick up the background noise.

The software in effect subtracts the latter from the former, leaving what Dynamic Hearing's CEO, Dr Elaine Saunders, called "an extremely clean transmit signal".

This multi-mic idea is not new, but it requires memory and a fair chunk of compute power to process the audio streams. Dynamic Hearing said it chose CSR because CSR's BlueCore5-Multimedia chip has both memory and a DSP (digital signal processor) built-in.

Saunders added that VoiceField is the latest addition to Atlas, whose software features already include acoustic echo suppression, automatic handsfree volume control, and programmable equalisation in 33 frequency bands of both the transmitted and received audio signal.

CSR software marketeer Gemma Paris said that several CSR customers are developing multi-mic headsets for release later this year. She said that the Atlas software would be rolled up with software from CSR itself and flashed onto the headsets during production. ®

Build a business case: developing custom apps

More from The Register

next story
Kate Bush: Don't make me HAVE CONTACT with your iPHONE
Can't face sea of wobbling fondle implements. What happened to lighters, eh?
The agony and ecstasy of SteamOS: WHERE ARE MY GAMES?
And yes it does need a fat HDD (or SSD, it's cool with either)
Apple takes blade to 13-inch MacBook Pro with Retina display
Shaves price, not screen on mid-2014 model
Steve Jobs had BETTER BALLS than Atari, says Apple mouse designer
Xerox? Pff, not even in the same league as His Jobsiness
TV transport tech, part 1: From server to sofa at the touch of a button
You won't believe how much goes into today's telly tech
Apple analyst: fruity firm set to shift 75 million iPhones
We'll have some of whatever he's having please
Apple to build WORLD'S BIGGEST iStore in Dubai
It's not the size of your shiny-shiny...
XBOX One will learn to play media from USB and DLNA sources
Hang on? Aren't those file formats you hardly ever see outside torrents?
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 10 endpoint backup mistakes
Avoid the ten endpoint backup mistakes to ensure that your critical corporate data is protected and end user productivity is improved.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.