For WinHEC Cortana Workshop, Shenzhen, 11 August 2015

What is good, better, and the best audio?

2Company Confidential and Proprietary

Laptop as a Speakerphone Enterprise Class Full Duplex

Speakerphone Experience

Optimized for MS Lync/Skype

Flawless Cortana Accuracy

Audio Output >2X Louder

No Risk to Speakers

Better Media Consumption

experience

mHD-Audio

or

I2S / I2C

CONEXANT

CODECwith Integrated

AudioSmart Amp

CONEXANT AudioSmartTM Software SSP Input Noise Reduction

Output Enhancement

SoftAware Speaker Control

Original System AudioSmart System USB Speakerphone (benchmark)

65dB 81dB 76dB

Sound Pressure Level at 1m

No other solution can deliver full duplex conference speakerphone experience while

concurrently delivering this level of loudness from laptop or tablet form factor

2.0

3Conexant Confidential and Proprietary

AUDIOSMARTTM

INPUT TECHNOLOGY

4Conexant Confidential and Proprietary

Conexant Smart Source Pickup (SSP)

SSP: Conexant proprietary noise suppression algorithm. The one easy solution.

• Based on a Blind Source Separation technique, modified for real-world robustness.

• NOT Beamforming ; SSP uses spatial representation of target speech and noise sources to reduce stationary and semi non-stationary interference (i.e., babble noise).

• Speech can be at any angle relative to the microphones.

• Noise can be at any angle relative to the microphones, even in the same direction as the speech.

Full-Sphere

“Noise”

“User”

5Conexant Confidential and Proprietary

SSP Voice + Speech Algorithm Value Proposition

Conexant’s Smart Source Pickup Input Pre-Processing Solution

with 5M Technology Enables:

• High resolution VoIP + class-leading Automatic Speech Recognition

from up to 5 meters (16 feet) away!

• Clear voice quality calls and videoconferencing in real-world

conditions (i.e., across a large, noisy room).

ConexantVoice/Speech Input

Pre-Processing

Speech + Interference Clear Speech

Increased VoIP

Clarity

Decreased Word

Error Rate

Speech

Recognition

Engine

IntelligibleVoiceCalls

6Company Confidential and Proprietary

Clamshell Stand Tent Tablet Lay-Flat

SSP Versatility

Supports all device orientations and use-cases with only 2 MICs, NO

holes drilled in glass, and ZERO user input!

7Conexant Confidential and Proprietary

AUDIOSMARTTM

OUTPUT TECHNOLOGY

8Conexant Confidential and Proprietary

Constantly delivers DSP-optimized signal to speakers at maximum safe

power level, independent of software

Actual output power of H-bridge is monitored at chip pins (closed loop!)

and intelligently averaged 100% in hardware Closed-loop system actively monitors speaker power consumption

Output RMS is compared to a programmable threshold matching exact speaker

capabilities

RMS measurements drive intelligent gain control

Adjustments are time-windowed to avoid false triggers by spikes in audio content

Class-D Power Optimization

RMS

PGA DAC

decrement gain during excess RMS output

Class-D Speaker Amplifier

9Conexant Confidential and Proprietary

AUDIOSMARTTM

IOT EXAMPLE

10Company Confidential and Proprietary

Speaker Performance ComparisonAmazon Echo

• Seven Microphones

• Amazon Voice Processing

• Amazon voice trigger engine

Conexant Smart Speaker

• Two Microphones

• Conexant Far-Field Voice Processing

• Sensory voice trigger engine

(embedded in Conexant SOC)

2.0

11Company Confidential and Proprietary

Conexant Noise Suppression Performance vs Amazon

~40% Hit Rate improvement in

noisy conditions

(Noise 5dB lower than speech)

No Hit Rate degradation in

“clean” conditions

(Noise 10dB lower than speech)

30% Hit Rate improvement in

extremely noise conditions

(Noise same level as speech)

With Conexant processing, user

will be understood one in three

attempts

With Amazon processing, user will

almost never be understood

12Conexant Confidential and Proprietary

AUDIOSMARTTM

ABOUT CONEXANT

13Company Confidential and Proprietary

<2000 2006 2010 2012 2014

Acoustic Echo

Cancellation enables

speakerphone in

production

Fax/Modems

Low-power PC audio

codec in production

computers

DSP codec with

integrated Class D in

production systems

Expanded PC audio

portfolio (ADI

acquisition)

USB codec in

production headsets,

speakers and

speakerphones

DSP Codec for high

quality Voice Input

and Communication

in Tier 1 TVs

Windows APO

Library complements

HW portfolio

20+ years of Audio Signal Processing Expertise

20+ years of Audio Hardware Expertise

AudioSmartTM Class-D

Integrated with Codec

History of Conexant Audio

14Company Confidential and Proprietary

Summary

• Single supplier providing Silicon & Software optimized to work “better

together”

– Silicon – High Performance ADC, DAC, CODEC’s, DSP & Smart AMP

– Software – Input Processing, Playback Processing & Awareness

– Ecosystems – Driving end user use cases with Industry leaders

– Partnerships – partners telling OEM’s – “Conexant’s solutions work better”

– Applications – support Audio for PC/Tablets/Headset/Docks/Smart Home/IoT

15Company Confidential and Proprietary

Worldwide, World-Class Support

*Supported through a network of 20 Distributors and 13 Rep Firms

France

Headquarters

Design Centers

Sales Offices

Design & Sales

India

China

Korea

Japan

Taiwan

Singapore

Waltham

Headquarters

Irvine

Austin

• Highest concentration of

computer audio systems

knowledge in the industry

• Expert Support AND

Engineering staff in every major

time zone

• Proven track record enabling

on-time shipment of Tier-1

OEM products