Andrea Electronics DA-300 - Manual (Page 2)

Figure 3.
Polar Plot of Directional Microphone Sensitivity Beam
(1/3 Octave Noise, Centered at 1 kHz)
Figure 1. DSDA Illustration
Figure 4.
Clean Speech Output
Summed Signals
Eliminate Noise
Noise Signal
Noise Signal
Noisy Voice Signal
Mic
Array
Adaptive
Digital Signal
Processing
Inverted Anti Noise
Signal
Nomad
Start
Mute
Volume
Help
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Setup
Audio
AM
FM
Preset
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Review
Zero
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Nine 59
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65 3
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3 no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition
no recognition 68
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1
Score Score # Tries # Tries Score Score Score Score # Tries # Tries # Tries
Automobile
Radio Loud,
Both Windows
Down
Automobile
Radio Loud,
Window
Down
Automobile
Radio Loud,
Window
Down
Automobile
Radio On,
Window
Partial
Automobile
Radio On,
Window
Partial
Automobile
Radio Loud,
Both Windows
Down
Competitor Andrea Array Competitor Andrea Array Competitor Andrea Array Microphone
Description
64.8 67.6 60.9 67.7 0 65.7
87.50% 96.60% 49.10% 82.40% 0.00% 93.30%
Test #1 Test #2 Test #3
Radio
Andrea Electronics Corporation
45 Melville Park Road, Melville, New York 11747
www.AndreaElectronics.com
Phone/Fax: (800) 442-7787
Proven Test Results
As part of a recent series of Auto PC tests, comparative microphone tests between the Andrea
AutoArray
and a standard directional microphone used in the automotive industry were performed. 28 verbal
commands were spoken to the Auto PC using both the
AutoArray and a standard directional microphone.
Under the most rigorous road test conditions, as illustrated in Figure 4, Test 3; the Auto PC experienced a
93.3% recognition rate using the Andrea
AutoArray compared to a 0% recognition rate using the
standard directional microphone.
Andrea AutoArray™ : An illustration of microphone performance
™
Figure 2.
Voice Frequency Response @ 0˚ vs.
Background Noise Response @ 45˚ and 90˚
-100
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
0 500 1k 1.5k 2k 2.5k 3k 3.5k 4k 4.5k 5k
90˚
45˚
0˚
dBV
Hz
0˚
30˚
60˚
90˚
120˚
150˚
180˚
150˚
120˚
90˚
60˚
30˚
1000
0
5
10
15
20
25
*Green represents
voice signal
Andrea Electronics Corporation
45 Melville Park Road, Melville, New York 11747
www.AndreaElectronics.com
Phone/Fax: (800) 442-7787