Feeds

Bluetooth headsets to get dual mics

Aussie developers use secondary mics for noise suppression

Choosing a cloud hosting partner with confidence

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. ®

Website security in corporate America

More from The Register

next story
Man buys iPHONE 6 and DROPS IT to SMASH on PURPOSE
Yarrrgh! 'Tis Antipodean insanity, ye crazy swab
Oi, Tim Cook. Apple Watch. I DARE you to tell me, IN PERSON, that it's secure
State attorney demands Apple CEO bows the knee to him
Monitors monitor's monitoring finds touch screens have 0.4% market share
Not four. Point four. Count yer booty again, Microsoft
4K-ing excellent TV is on its way ... in its own sweet time, natch
For decades Hollywood actually binned its 4K files. Doh!
Your chance to WIN the WORLD'S ONLY HANDHELD ZX SPECTRUM
Reg staff not allowed to enter, god dammit
Phones 4u website DIES as wounded mobe retailer struggles to stay above water
Founder blames 'ruthless network partners' for implosion
DARPA-backed jetpack prototype built to make soldiers run faster
4 Minute Mile project hatched to speed up tired troops
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.