Web RadioThe wave of the future...

Group Members...

Dave Hillyard Mike Foy Barrett Cervenka Tony Camilli

Introduction...

High speed access is become more common in homes and the market for Hi-Fi audio has always existed. Our project takes Hi-Fi audio and makes it widely available via these high speed connections.

Objectives and Deliverables...

Connect to a steaming audio server over the Internet.

Decode the network protocol. Decode the digital audio signal. Decode the digital audio signal to an analog

signal.

Objectives and Deliverables...

Change between sites so that the user can listen to different stations.

Deliver a LINE OUT from digital audio (16-bit stereo, 44 kHz).

Our Project...

Traditionally people have listened to the radio over and RF frequency. With our implementation, people will be able to listen to their favorite radio station no matter where they are in the world.

Features and Benefits...

CD Quality sound through TCP/IP– Our project will allow users to have CD quality

sound (44 kHz, 16-bit stereo) which is better than what RealPlayer currently allows with their web interface

Real-time audio– The streaming audio will be decompressed in

real-time

Features and Benefits...

Wider variety of stations– Accessing streaming audio via the web allows

you to listen to stations that would not be available to the home user otherwise (example: BBC in England)

Reception never deteriorates– Unlike regular radio signals, our signal through

the Internet will never deteriorate

Features and Benefits...

No PC necessary for LINE OUT signal– Since all computations will be performed by the

Motorola processor, a PC is not necessary for receiving the signal

Intuitive interface with LCD– The LCD and buttons will provide the user with

an easy interface for connecting to streaming audio servers

Block Diagram...

Components...

Component Approximate PriceNetwork Interface Card (NE2000) In stockMulti-line LCD (Optrex DMC20481) In stockXilinx Chip In stockButtons In stockBreadboard In stockDigital Audio Converter (2) 16-bit parallel $5.00/eachMotorola MMC2001 processor In stockTotal $10.00

Development Tools...

LabView Visual C++ Visual J++ National Instruments DAQ HP1562B Logic Analyzer Xilinx development software

Team Member Responsibilities...

Michael Foy will be in charge of the digital to analog signal, filters, and amplifier in order to deliver a “line out.” This line out will be CD quality (44 kHz).

Tony Camilli will be in charge of our user interface. His duties include making the LCD display work properly and configuring the buttons as channel selectors.

Barrett Cervenka and David Hillyard will be in charge of decoding the TCP/IP data and converting the network information into digital audio to be decoded by Mike’s portion of the project.

Weekly Schedule...

Component 1 2 3 4 5 6 7 8 9 10 11 12LCD interface X XNetwork interface X X X XRealAudio decoding X X X XAudio decompression X X X XDigital-to-Audioconversion

X X

RCA line out X XIntegration X XTesting XFinal Presentation X

References...

Introduction to TCP/IP – – gopher://gopher-chem.ucdavis.edu

/11/Index/Internet_aw/Intro_the_Internet/intro.to.ip/

RealAudio Information – – http://www.real.com

Motorola – – http://www.motorola.com

References...

483 Home Page –– http://www.cs.tamu.edu/course-info/cpsc483/

common/

Analog Devices –– http://www.analogdevices.com

Xilinx Home Page -– http://www.xilinx.com/