1Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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PROJECT SAURONCUMULATIVE DESIGN REVIEW

Senior Design ProjectSpring 2016

Sponsors:

2Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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The Team

Advisor:Tilman Wolf

Walter BrownCSE & CS

Zach GoodmanEE

Omid MehCSE & EE

Jose LaSalleEE

3Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Overview• Project Sauron

1. Problem

2. Scope

3. Specs

4. Deliverables

5. Work Breakdown Structurea) Block Diagramb) Mic Modulesc) New Arrayd) Real-Time Systeme) Beamformingf) User Interfaceg) Integration

• Responsibilities

• Demo

• Outlook

4Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Project Sauron – Refresher

A surveillance system in which a user selects an individual in the camera’s field of vision, directs

our microphone array to focus on the selected individual and isolate their audio.

7Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Project Sauron – Specs

• Range: 1 to 3 meters

• Spanning Angle: 130º (-65º to 65º from center)

• Frequency:500Hz-3.5kHz

• Beam Width: 40º

8Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Project Sauron – CDR Deliverables

• Promised Deliverables (Achieved)

• Mic Modules Designed

• Prototype of the New Array

• Working draft of UI

• Integration (HW, SW, UI)

• Additional Accomplishments

• Real-time Code

• Working Compound Array

• Speech Isolation on the Compound Array

9Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureBlock Diagram

10Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureNew Array Design

• Engineered for Human Voice

• Compound Array

• Ground Shielded Alpha Wires

• Chassis/Mic Acoustic Separation

• Vantage Point Placement

• Low-Noise Voltage Source

11Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureNew Array Design

12Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown Structure3.3V Power Supply

13Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown Structure±9V Power Supply

14Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureMic Modules

15Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureDifferential Pair

17Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureReal-time system design

• Moved from Matlab to Simulink

18Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureBeamforming

• Compound Array Interface

• SW DC block

• Optimal Sampling rate

• Modular Design

• Parallel Sub-band Processing

• Time-delay Beamforming

• Beam Pattern Analysis

19Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureUser Interface

• Camera Interface

• USB

• Mouse Location

• S2 Block

• Deriving Expression

• Assume centered horizontal

• Expression Almost Linear

0

20

40

60

80

100

120

140

160

180

0 500 1000 1500 2000 2500 3000Angle

(degre

es)

X Coordinate (pixels)

Angle VS X Coordinate on Picture

20Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureUser Interface

Fisheye Picture of Protractor

21Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Work Breakdown StructureIntegration

• UI Gives Beamformer Direction

• Buffering Frame Size

22Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Team Responsibilities

• New Array (Jose/Zach)

• Microphone Module Design (Zach)

• Real-Time (Omid/Walter)

• Beamforming with New Array (Omid)

• User Interface (Walter)

• Hardware Debugging (Jose)

• Software Debugging (All)

23Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Project Sauron – Outlook

• Enclosure

• Power Source

• Use both mouse coordinates to find azimuth

• Mark spanning angle in UI

• Mark beamforming area in UI

• Reduce Noise with new modules

24Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Project Sauron – Demo

Prototype Demo

26Department of Electrical and Computer EngineeringDepartment of Electrical and Computer Engineering SDP16: Project Sauron

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Project Sauron – Questions

Any Questions?