COMM 3353: Communication Web Technologies I Chapter 3a: Internet Radio Chapter 3a: Internet Radio .

COMM 3353:Communication Web Technologies I

COMM 3353:Communication Web Technologies I

Chapter 3a:Internet Radio

Chapter 3a:Internet Radio

www.class.uh.edu/comm/classes/comm3353/ppt/_Pres3a.html

Internet RadioInternet Radio

The Growth of Internet Radio Internet Radio Versus Over-The-Air

Radio Real-Time Audio Netcasting Networks Cybercasting Radio Stations

The Growth of Internet Radio Internet Radio Versus Over-The-Air

Radio Real-Time Audio Netcasting Networks Cybercasting Radio Stations

The Growth of Internet RadioThe Growth of Internet Radio

The Internet provides the ability to own, program, and operate a radio station with relative ease

December 1994: KU Student-run radio first to go live on the Internet

September 5, 1995: Birth of “Live” Internet Audio with sports netcast

September 9, 1995: Dallas KLIF-AM first commercial station on the Internet full-time.

The Internet provides the ability to own, program, and operate a radio station with relative ease

December 1994: KU Student-run radio first to go live on the Internet

September 5, 1995: Birth of “Live” Internet Audio with sports netcast

September 9, 1995: Dallas KLIF-AM first commercial station on the Internet full-time.

The Growth ofInternet Radio, continued…

The Growth ofInternet Radio, continued…

Rise of Internet Radio and Over-the-Air Radio Similar development

HAM (amateur radio operators) turned into commercial radio

Amateur netcasters paved the way for professional, commercial web radio

Internet Radio is becoming increasingly noticeable in the communication industry, although it has a long way to go

Rise of Internet Radio and Over-the-Air Radio Similar development

HAM (amateur radio operators) turned into commercial radio

Amateur netcasters paved the way for professional, commercial web radio

Internet Radio is becoming increasingly noticeable in the communication industry, although it has a long way to go

Internet Radio vs. Over-The-Air RadioInternet Radio vs. Over-The-Air Radio

Over-Air radio use is slowly decreasing among internet users and IT professionals. Amount of time spent listening to radio has

decreased as a result of time spent surfing. Reciprocity rather than accommodation.

Now a general move toward accommodation. With this move comes the demand for faster, more

reliable service

Over-Air radio use is slowly decreasing among internet users and IT professionals. Amount of time spent listening to radio has

decreased as a result of time spent surfing. Reciprocity rather than accommodation.

Now a general move toward accommodation. With this move comes the demand for faster, more

reliable service

Benefits of Internet Radio Potentially better than Over-Air Radio

Web audio files can be accessed at any time, regardless of when first aired

Netcasts can be listened to anywhere in the world, regardless of origin

Netcasts include visual and sound stimulus as well as printed text.

Allows Multitasking

Benefits of Internet Radio Potentially better than Over-Air Radio

Web audio files can be accessed at any time, regardless of when first aired

Netcasts can be listened to anywhere in the world, regardless of origin

Netcasts include visual and sound stimulus as well as printed text.

Allows Multitasking

Internet Radio vs. Over-The-Air Radio, continued…


Challenges of Internet Radio Sound Quality

Based on connectivity

Biggest problem with Internet Radio Main reason adoption is slow

Download delay A 15 min. audio program can take 1-2 hours to

download Although it’s getting increasingly quicker

Challenges of Internet Radio Sound Quality

Based on connectivity

Biggest problem with Internet Radio Main reason adoption is slow

Download delay A 15 min. audio program can take 1-2 hours to

download Although it’s getting increasingly quicker



Challenges of Internet Radio, Cont. Limited number of server connections at

any given time Licensing (NT, Novel, etc.)

Per connection user rate

Software capability (NT Workstation) Only allows 10 simultaneous connections

Lack of portability No network connection on the beach

Challenges of Internet Radio, Cont. Limited number of server connections at

any given time Licensing (NT, Novel, etc.)

Per connection user rate

Software capability (NT Workstation) Only allows 10 simultaneous connections

Lack of portability No network connection on the beach



Challenges of Internet Radio, Cont. Portability, Cont.

Recent Dateline NBC interview with Bill Gates Microsoft’s Billion Dollar R&D Satellite technology beaming signal directly into cars

and portable lap tops

The cars of the future will have console style computers, resembling a car radio, which will allow radio listing and email access, among other things.

Challenges of Internet Radio, Cont. Portability, Cont.

Recent Dateline NBC interview with Bill Gates Microsoft’s Billion Dollar R&D Satellite technology beaming signal directly into cars

and portable lap tops

The cars of the future will have console style computers, resembling a car radio, which will allow radio listing and email access, among other things.



Real Time AudioReal Time Audio

RealAudio First application to bring real-time audio-on-demand over

the internet. Uses streaming technology to transmit live, real-time,

continuous audio STREAMING: technology that sends data through the net in a

continuous flow so that information is displayed on a user’s computer before the entire file is downloaded

Since inception, many radio stations have adopted netcast technologies

RealAudio First application to bring real-time audio-on-demand over

the internet. Uses streaming technology to transmit live, real-time,

continuous audio STREAMING: technology that sends data through the net in a

continuous flow so that information is displayed on a user’s computer before the entire file is downloaded

Since inception, many radio stations have adopted netcast technologies

Real Time Audio, Continued…Real Time Audio, Continued…

RealAudio, Cont. Does not require a great deal of computing

expertise Relatively inexpensive With RealAudio, users (surfers) do not

have to wait for big audio files to download, but rather get data seemingly instantaneously

RealAudio, Cont. Does not require a great deal of computing

expertise Relatively inexpensive With RealAudio, users (surfers) do not

have to wait for big audio files to download, but rather get data seemingly instantaneously

Internet Sound has actually been available since mid ‘80s. Problematic due to packet-switching errors

and long download times RealAudio developed UDP (User

Datagram Protocol) Works just like (and in conjunction with)

TCP/IP, except eliminates the “talking” between computers

Internet Sound has actually been available since mid ‘80s. Problematic due to packet-switching errors

and long download times RealAudio developed UDP (User

Datagram Protocol) Works just like (and in conjunction with)

TCP/IP, except eliminates the “talking” between computers


MPEG (Motion Pictures Experts Group) Compresses graphic and sound files for internet

transmission Quicker because files are 1/10th normal size Files must be decompressed once received by the user

RTSP (Real-Time Streaming Protocol) Industry standard for streaming RTSP is to Audio what HTML is to Text

In other words, RTSP is expected to be the primary audio programming protocol

MPEG (Motion Pictures Experts Group) Compresses graphic and sound files for internet

transmission Quicker because files are 1/10th normal size Files must be decompressed once received by the user

RTSP (Real-Time Streaming Protocol) Industry standard for streaming RTSP is to Audio what HTML is to Text

In other words, RTSP is expected to be the primary audio programming protocol


Multicasting Technology that allows one audio file to be

sent out to multiple receivers at any given time, rather than point-to-point file delivery

Multicasting Technology that allows one audio file to be

sent out to multiple receivers at any given time, rather than point-to-point file delivery


How does Real-Time Audio Work? Encoder vs. Player

RealAudio Encoder is used to send audio netcasts over the internet

RealAudio Player is the software technology used to receive encoded audio files and display them in a format understood by the user.

How does Real-Time Audio Work? Encoder vs. Player

RealAudio Encoder is used to send audio netcasts over the internet

RealAudio Player is the software technology used to receive encoded audio files and display them in a format understood by the user.


RealAudio Encoder Digitizes audio files for data packet and

Real-Time player compatibility Uses streaming and a buffer scheme to

send digitized binary audio files Generally associated with the server side

of media streaming

RealAudio Encoder Digitizes audio files for data packet and

Real-Time player compatibility Uses streaming and a buffer scheme to

send digitized binary audio files Generally associated with the server side

of media streaming


RealAudio Player Decodes digitized audio sent from the

server, initially created by RealAudio Encoder.

Greatly reduces waiting time for downloaded audio files

Generally associated with client side media steaming

RealAudio Player Decodes digitized audio sent from the

server, initially created by RealAudio Encoder.

Greatly reduces waiting time for downloaded audio files

Generally associated with client side media steaming


Netcasting NetworksNetcasting Networks Radio vs. Netcast Networks

Radio Networks A Radio Network supplies radio stations with programming,

news, commercials. Ex. Westwood One, ABC, etc.

Netcast Networks Derived from parent radio networks Assist radio stations with developing online sites Supplies netcast stations with current, breaking news, weather,

sports, etc Ex. ABC RadioNet, CBS Radio Networks Online

Radio vs. Netcast Networks Radio Networks

A Radio Network supplies radio stations with programming, news, commercials.

Ex. Westwood One, ABC, etc.

Netcast Networks Derived from parent radio networks Assist radio stations with developing online sites Supplies netcast stations with current, breaking news, weather,

sports, etc Ex. ABC RadioNet, CBS Radio Networks Online

Netcasting Networks, Continued…Netcasting Networks, Continued…

Netcast Networks, Cont. In addition to general support, some

netcasts offer real-time cybercasts Ex. ABC RadioNet’s OJ Simpson trial, Bill

Clinton’s Presidential Radio Address Netcast Networks use streaming

technology to deliver real-time news, in some cases quicker than conventional media methods.

Netcast Networks, Cont. In addition to general support, some

netcasts offer real-time cybercasts Ex. ABC RadioNet’s OJ Simpson trial, Bill

Clinton’s Presidential Radio Address Netcast Networks use streaming

technology to deliver real-time news, in some cases quicker than conventional media methods.

Cybercasting RadioStationsCybercasting RadioStations

Broadcast Stations on the Web Can excel online by providing the only

radio link to locations unable to receive conventional radio signals.

Allow users to select any radio station, anywhere in the world

Could result in new arena for competition as Broadcast Stations attempt to attract new advertising markets

Broadcast Stations on the Web Can excel online by providing the only

radio link to locations unable to receive conventional radio signals.

Allow users to select any radio station, anywhere in the world

Could result in new arena for competition as Broadcast Stations attempt to attract new advertising markets

Cybercasting RadioStations, Continued…


Broadcast Stations on the Web, Cont. Radio Web Sites compete with local radio

stations and newsprint by providing consumer information and advertising The larger the audience, the greater the

market, the greater the advertising dollar share Web Radio keeps the public informed

Used as a “tie-in” to promotional events by allowing a larger audience to “attend” than physically possible

Broadcast Stations on the Web, Cont. Radio Web Sites compete with local radio

stations and newsprint by providing consumer information and advertising The larger the audience, the greater the

market, the greater the advertising dollar share Web Radio keeps the public informed

Used as a “tie-in” to promotional events by allowing a larger audience to “attend” than physically possible

Broadcast Stations on the Web, Cont. Deciding what should be on a Radio Station's Web

Site: Internet Radio Station profile Photos of on-air personalities Program schedule and Play List Method of feedback (email) Downloadable audio clips DJ Biographies

Broadcast Stations on the Web, Cont. Deciding what should be on a Radio Station's Web

Site: Internet Radio Station profile Photos of on-air personalities Program schedule and Play List Method of feedback (email) Downloadable audio clips DJ Biographies



Broadcast Stations on the Web, Cont. Internet Radio makes a radio station

“Global” Netcasting allows for an unlimited audience

A radio station’s profit margin can be inflated by offering enhanced advertising packages to virtually any company in the world, provided the Web Radio Site is popular enough.

Broadcast Stations on the Web, Cont. Internet Radio makes a radio station

“Global” Netcasting allows for an unlimited audience

A radio station’s profit margin can be inflated by offering enhanced advertising packages to virtually any company in the world, provided the Web Radio Site is popular enough.



The Internet and theWorld Wide Web

The Internet and theWorld Wide Web

• End Chapter 3, Part I.

• End Chapter 3, Part I.

COMM 3353: Communication Web Technologies I Chapter 3a: Internet Radio Chapter 3a: Internet Radio .

Documents

multitasking internet

internet radio chapter

air radio overair radio

internet users

internet fulltime

overair radio web audio

birth of live internet

commercial station