Andrea Electronics Digital Technologies

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Andrea ElectronicsDigital Technologies
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• Founded in 1934 by Frank A.D. Andrea, Sr.
• Commenced trading publicly in 1960
• Developed and Patented ANC Technology in 1994
• Acquired Lamar Signal Processing in 1998
• Introduced the First Digital Microphone in 1998

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Andrea Worldwide
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Andrea Analog Products
NC
USB
Telephony
Quiet-Ware
ANC
Avionics
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Andrea Product Lines
Traditional / Military
Headsets / Communication
Digital Signal Processing
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Enabling Technologies
Audio Pre-processing for Voice Recognition
Command and Control High Quality Audio
Conferencing Improved Communication
PC Voice (Windows XP)
Telematics
Conference
Communication
Set Top Boxes
PDAs
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Audio Input Requirements

• Telematics - Hands Free communication and voice
  activation in a noisy environment
• PC Audio Un-Tethered voice activation and
  dictation in a real environment
• PDA Pen-Free Voice Activated Internet Browsing
  in a mobile environment
• Home Automation (Set Top Boxes) - Command and
  Control in a large room
• Communication High quality audio and video
  conferencing in a conference environment
• Other Communication in high noise environments
  (ATM, Drive Through, military, industrial)

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Telematics Challenges
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The Andrea Telematics Solution
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The Needs and The Technologies
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DSDA - Adaptive Beamforming
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PureAudio - Noise Reduction
Estimate Noise
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EchoStop - Acoustic Echo Canceling
Communication Device
Echo
AEC
Signal without Echo
Signal with Echo
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Flow Chart of Andreas Solution
Adjust Output Level
Aim Reception Cone
Adaptive Noise Canceling
Filter, Amplify
Noise Reduction
Signal Conditioning
Beam Steering
DSDA Echo Stop
Pure Audio
DRC
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Speech Recognition PerformanceOEM Test Results
Using the Andrea Array
OEM A
OEM B
Speech Engine A
Speech Engine B
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Speech Recognition Improvement OEM Test Results
With Single Channel Processing
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Intelligibility PerformanceAKG Single Element Vs
Andrea Array
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Block Diagram of a Stand Alone Solution
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Andreas Integrated Audio Chipset Offering
ADC
ADC
ADC
DSDA, Pure Audio AEC, LEC, DRC
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Typical Telematics Solution
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The Andrea Telematics Offerings
Headliner Array
Clarion, BMW, After Market
Headliner Array
Mirror Array
Mirror Array
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Andreas Far Field Solutions to the PC and to
Other Markets
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PC Communication / Set Top Boxes Challenges
Solution
Room noise and interferences DSDA Pure
Audio Stereo output signal Stereo Echo
Canceling High level of reverberation DSDA Both
acoustic and line echo AEC LEC
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Conference Room Challenges Solutions
Number of speakers from different DFTA
DSDA directions and distances Full duplex
operation Echo Stop High immunity to noise and
reflections DSDA Pure Audio
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Conferencing Products Voice Finder
Locate the direction of speaker through
DFTA Directional beam through DSDA Beam
steering Noise reduction through Pure
Audio Acoustic Echo Canceling through Echo
Stop Serial communication to Host
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PC Audio DSP Based Products DA400
Locate the direction of speaker through
DFTA Directional beam through DSDA Beam
steering Noise reduction through Pure
Audio Acoustic Echo Canceling through Echo
Stop Telephone / PC Connectivity
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Audio Input for PA System in Buses SpeakEasy II
Directional beam through DSDA Noise reduction
through Pure Audio Beam steering Logic
control Temporary message recording and
Playback Fixed message recording and
Playback Volume Control I/O Control Indicators
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Directional Microphone for Outdoor Professional
Recordings AT895
Directional beam through DSDA Pro Three levels of
directionality Extremely high dynamic range and
very wide frequency response
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PC Audio Software Products
2Ch USB Portofino - IBM
2Ch Mic Input Analog Devices
Acoustic Echo Canceling Internet Telephony