comm 3353: communication web technologies i chapter 3a: internet radio chapter 3a: internet radio
TRANSCRIPT
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…
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
Internet Radio vs. Over-The-Air Radio, continued…
Internet Radio vs. Over-The-Air Radio, continued…
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
Internet Radio vs. Over-The-Air Radio, continued…
Internet Radio vs. Over-The-Air Radio, continued…
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.
Internet Radio vs. Over-The-Air Radio, continued…
Internet Radio vs. Over-The-Air Radio, continued…
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
Real Time Audio, Continued…Real Time Audio, Continued…
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
Real Time Audio, Continued…Real Time Audio, Continued…
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
Real Time Audio, Continued…Real Time Audio, Continued…
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.
Real Time Audio, Continued…Real Time Audio, Continued…
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
Real Time Audio, Continued…Real Time Audio, Continued…
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
Real Time Audio, Continued…Real Time Audio, Continued…
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…
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
Cybercasting RadioStations, Continued…
Cybercasting RadioStations, Continued…
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.
Cybercasting RadioStations, Continued…
Cybercasting RadioStations, Continued…