
Internet radio, also known as online radio, web radio, net radio, streaming radio, e-radio and IP radio, is a
digital audio
Digital audio is a representation of sound recorded in, or converted into, digital signal (signal processing), digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical sampling (signal processing), ...
service transmitted via the
Internet
The Internet (or internet) is the Global network, global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a internetworking, network of networks ...
. Broadcasting on the Internet is usually referred to as
webcasting since it is not transmitted broadly through wireless means. It can either be used as a stand-alone device running through the Internet, or as a software running through a single computer.
Internet radio is generally used to communicate and easily spread messages through the form of talk. It is distributed through a wireless communication network connected to a switch packet network (the internet) via a disclosed source.
Internet radio involves
streaming media
Streaming media refers to multimedia delivered through a Computer network, network for playback using a Media player (disambiguation), media player. Media is transferred in a ''stream'' of Network packet, packets from a Server (computing), ...
, presenting listeners with a continuous stream of audio that typically cannot be paused or replayed, much like traditional broadcast media; in this respect, it is distinct from on-demand file serving. Internet radio is also distinct from
podcast
A podcast is a Radio program, program made available in digital format for download over the Internet. Typically, a podcast is an Episode, episodic series of digital audio Computer file, files that users can download to a personal device or str ...
ing, which involves
downloading rather than streaming.
Internet radio services offer news, sports, talk, and various genres of music—every format that is available on traditional
broadcast radio stations. Many Internet radio services are associated with a corresponding traditional (terrestrial) radio station or
radio network
There are two types of radio network currently in use around the world: the one-to-many (simplex communication) broadcast network commonly used for public information and mass media, mass-media entertainment, and the two-way radio (Duplex (teleco ...
, although low start-up and ongoing costs have allowed a substantial proliferation of independent Internet-only radio stations.
The first Internet radio service was launched in 1993. As of 2017, the most popular Internet radio platforms and applications in the world include
TuneIn Radio,
iHeartRadio
iHeartRadio (often shortened to just "iHeart") is an American freemium broadcast, podcast, radio streaming and Music Streaming platform owned by iHeartMedia. Founded in August 2008, iHeartRadio serves as the national umbrella brand for iHeart ...
, and
Sirius XM
Sirius XM Holdings Inc. is an American broadcasting corporation headquartered in Midtown Manhattan, New York City, that provides satellite radio and online radio services operating in the United States. The company was formed by the 2008 merge ...
. In the U.S., unlike
over-the-air broadcast radio, an
FCC license is not required to operate an Internet radio service.
Internet radio technology
Internet radio services are usually accessible from anywhere in the world with a suitable internet connection available; one could, for example, listen to an Australian station from Europe and America. This has made internet radio particularly suited to and popular among
expatriate
An expatriate (often shortened to expat) is a person who resides outside their native country.
The term often refers to a professional, skilled worker, or student from an affluent country. However, it may also refer to retirees, artists and ...
listeners. Nevertheless, some major networks like
TuneIn Radio,
Audacy,
Pandora Radio
Pandora is a subscription-based music streaming service owned by the broadcasting corporation Sirius XM that is based in Oakland, California in the United States. The service carries a focus on recommendations based on the " Music Genome Proje ...
,
iHeartRadio
iHeartRadio (often shortened to just "iHeart") is an American freemium broadcast, podcast, radio streaming and Music Streaming platform owned by iHeartMedia. Founded in August 2008, iHeartRadio serves as the national umbrella brand for iHeart ...
and
Citadel Broadcasting
Citadel Broadcasting Corporation was a Las Vegas, Nevada-based broadcast holding company founded and developed by Larry Wilson. Citadel owned 243 radio stations across the United States and was the third-largest radio station owner in the count ...
(except for news/talk and sports stations) in the United States, and
Chrysalis
A pupa (; : pupae) is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their life cycle, the stages the ...
in the United Kingdom, restrict listening to in-country due to music licensing and advertising issues.
Internet radio is also suited to listeners with special interests, allowing users to pick from a multitude of different stations and genres less commonly represented on traditional radio.
Listening

Internet radio is typically listened to on a standard home
PC or similar device, through an embedded player program located on the respective station's website or on a
smartphone
A smartphone is a mobile phone with advanced computing capabilities. It typically has a touchscreen interface, allowing users to access a wide range of applications and services, such as web browsing, email, and social media, as well as multi ...
app. In recent years, dedicated devices that resemble and offer the listener a similar experience to a traditional
radio receiver
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. ...
have arrived on the market.
Streaming
Streaming
Streaming media refers to multimedia delivered through a network for playback using a media player. Media is transferred in a ''stream'' of packets from a server to a client and is rendered in real-time; this contrasts with file downl ...
technology is used to distribute Internet radio, typically using a
lossy
In information technology, lossy compression or irreversible compression is the class of data compression methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size ...
audio codec. Streaming audio formats include
MP3,
AAC+,
Ogg Opus,
Ogg Vorbis
Vorbis is a free and open-source software project headed by the Xiph.Org Foundation. The project produces an audio coding format and software reference encoder/decoder (codec) for lossy audio compression, libvorbis. Vorbis is most common ...
,
Windows Media Audio
Windows Media Audio (WMA) is a series of audio codecs and their corresponding audio coding formats developed by Microsoft. It is a proprietary technology that forms part of the Windows Media framework. Audio encoded in WMA is stored in a digi ...
,
RealAudio.
Audio data is continuously transmitted serially (streamed) over the local network or internet in
TCP or
UDP packets, then reassembled at the receiver and played a second or two later. The delay is called
lag, and is introduced at several stages of digital audio broadcasting.
Simulation
A local tuner simulation program includes all the online radios that can also be heard in the air in the city.
Popularity
In 2003, revenue from online streaming music radio was US$49 million. By 2006, that figure rose to US$500 million.
A February 21, 2007 "survey of 3,000 Americans released by consultancy Bridge Ratings & Research" found that "
much as 19% of U.S. consumers 12 and older listen to Web-based radio stations." In other words, there were "some 57 million weekly listeners of Internet radio programs. More people listen to online radio than to satellite radio,
HD Radio
HD Radio (HDR) is a trademark for in-band on-channel (IBOC) digital radio broadcast technology. HD radio generally simulcast, simulcasts an existing analog radio station in digital format with less noise and with additional text information. HD R ...
, podcasts, or cell-phone-based radio combined."
An April 2008 Arbitron survey
showed that, in the US, more than one in seven persons aged 25–54 years old listen to online radio each week.
In 2008, 13 percent of the American population listened to the radio online, compared to 11 percent in 2007. Internet radio functionality is also built into many dedicated
Internet radio device
An Internet radio device, also called network music player is a hardware device that is capable of receiving and playing streaming media, streamed media from either Internet radio stations or a home network.
Background
Streaming media became main ...
s, which give an FM like receiver user experience.
In the fourth quarter (Q4) of 2012, Pandora, TuneIn Radio, iHeart Radio, and other subscription-based and free Internet radio services accounted for nearly one quarter (23 percent) of the average weekly music listening time among consumers between the ages of 13 and 35, an increase from a share of 17 percent the previous year.
[Streaming Music is Gaining on Traditional Radio Among Younger Music Listeners](_blank)
by The NPD Group
As Internet-radio listening rose among the 13-to-35 age group, listening to AM/FM radio, which now accounts for 24 percent of music-listening time, declined 2 percentage points. In the 36-and-older age group, by contrast, Internet radio accounted for just 13 percent of music listening, while AM/FM radio dominated listening methods with a 41 percent share.
As of 2014, 47% of all Americans ages 12 and older—an estimated 124 million people—said they have listened to online radio in the last month, while 36% (94 million people) have listened in the last week. These figures are up from 45% and 33%, respectively, in 2013. The average amount of time spent listening increased from 11 hours, 56 minutes per week in 2013 to 13 hours 19 minutes in 2014. As might be expected, usage numbers are much higher for teens and younger adults, with 75% of Americans ages 12–24 listening to online radio in the last month, compared to 50% of Americans ages 25–54 and 21% of Americans 55+. The weekly figures for the same age groups were 64%, 37% and 13%, respectively. In 2015, it was recorded that 53% of Americans, or 143 million people, ages 12 and up currently listen to internet radio.
Broadcasting freedoms
Some stations, such as
Primordial Radio, use Internet radio as a platform as opposed to other means such as
FM or
DAB, as it gives greater freedom to broadcast as they see fit, without being subject to regulatory bodies such as
Ofcom
The Office of Communications, commonly known as Ofcom, is the government-approved regulatory and competition authority for the broadcasting, internet, telecommunications and mail, postal industries of the United Kingdom.
Ofcom has wide-rang ...
in the UK. For example, Ofcom has very strict rules about presenters endorsing products and product placement; being an Internet radio station they are free of this constraint. One of the large controversies regarding internet radio revolved around a dispute between regulators over the amount of royalties Internet radio stations had to pay out. The Copyright Royalty Board initially wanted internet radio stations to pay out 100% royalties to the musicians whose songs were played compared to the 15% that satellite radio stations had to pay. This disagreement was temporarily postponed when the webmaster act of 2008 and 2009 was passed.
History
Internet radio was pioneered by
Carl Malamud. In 1993, Malamud launched "
Internet Talk Radio", which was the "first computer-radio talk show, each week interviewing a computer expert". The first Internet concert was broadcast on June 24, 1993, by the band
Severe Tire Damage.
In March 1994, an unofficial automated rebroadcast of Irish radio news was setup as the RTE To Everywhere Project, allowing Irish people across the world daily access to radio news from home until it was rendered obsolete in 1998. In November 1994, a Rolling Stones concert was the "first major cyberspace multicast concert." Mick Jagger opened the concert by saying, "I want to say a special welcome to everyone that's, uh, climbed into the Internet tonight and, uh, has got into the
M-bone. And I hope it doesn't all collapse."
On November 7, 1994,
WXYC (89.3
FM Chapel Hill, North Carolina
Chapel Hill is a town in Orange County, North Carolina, Orange and Durham County, North Carolina, Durham counties, North Carolina, United States. Its population was 61,960 in the 2020 United States census, making Chapel Hill the List of municipa ...
, USA) became the first traditional radio station to announce broadcasting on the Internet. WXYC used an FM radio connected to a system at SunSite, later known as
Ibiblio, running Cornell's
CU-SeeMe software. WXYC had begun test broadcasts and bandwidth testing as early as August 1994.
WREK (91.1 FM,
Atlanta
Atlanta ( ) is the List of capitals in the United States, capital and List of municipalities in Georgia (U.S. state), most populous city in the U.S. state of Georgia (U.S. state), Georgia. It is the county seat, seat of Fulton County, Georg ...
,
GA USA) started streaming on the same day using their own custom software called CyberRadio1. However, unlike WXYC, this was WREK's beta launch and the stream was not advertised until a later date.
On December 3, 1994,
KJHK 90.7 FM, a campus radio station located in
Lawrence, Kansas
Lawrence is a city in and the county seat of Douglas County, Kansas, United States, and the sixth-largest city in the state. It is in the northeastern sector of the state, astride Interstate 70 in Kansas, Interstate 70, between the Kansas River ...
, at the
University of Kansas
The University of Kansas (KU) is a public research university with its main campus in Lawrence, Kansas, United States. Two branch campuses are in the Kansas City metropolitan area on the Kansas side: the university's medical school and hospital ...
, became one of the first radio stations in the world to broadcast a live and continuous stream over Internet radio. ''Time'' magazine said that RealAudio took "advantage of the latest advances in digital compression" and delivered "AM radio-quality sound in so-called real time."
Eventually, companies such as Nullsoft and Microsoft released streaming audio players as free downloads.
As the software audio players became available, "many Web-based radio stations began springing up."
In 1995, Scott Bourne founded NetRadio.com as the world's first Internet-only radio network. NetRadio.com was a pioneer in Internet radio. It was the first Internet-only network to be licensed by ASCAP. NetRadio eventually went on to an IPO in October 1999. Most of the current Internet radio providers followed the path that NetRadio.com carved out in digital media.
In mid December 1995, Vancouver-based
AM radio station
CKNW
CKNW (730 AM) is a commercial radio station in Vancouver, British Columbia. Owned by Corus Entertainment, it broadcasts a talk radio format. Its offices and studios are in the TD Tower in Downtown Vancouver.
CKNW is powered at 50,000 watts, ...
became the first commercial radio station in Canada to stream 24/7 over the internet. In March 1996, Virgin Radio – London became the first European radio station to broadcast its full program live on the Internet. It broadcast its FM signal, live from the source, simultaneously on the Internet 24 hours a day. On May 1, 1997,
Radio306.com (now
Pure Rock Radio) launched in Saskatoon, Canada. The internet-only station
purerockradio.net celebrated 20 years on air in 2017 as the longest-running Canadian internet station.
Internet radio also provided new opportunities to mix music with advocacy messages. In February 1999, Zero24-7 Web Radio was launched. It was the first Internet radio station to be crowdsourced and programmed by professional broadcasters and crowdfunded by a unique partnership of people, charities and businesses. Out of Washington DC, the station mixed progressive music and green messages. It was created by BBC and WHFS veteran
Mark Daley.
Internet radio attracted significant media and investor attention in the late 1990s. In 1998, the initial public stock offering for
Broadcast.com set a record at the time for the largest jump in price in stock offerings in the United States. The offering price was US$18 and the company's shares opened at US$68 on the first day of trading.
The company was losing money at the time and indicated in a prospectus filed with the Securities Exchange Commission that they expected the losses to continue indefinitely.
Yahoo! purchased Broadcast.com on July 20, 1999,
for US$5.7 billion.
With the advent of streaming RealAudio over HTTP, streaming became more accessible to a number of radio shows. One such show, ''
TechEdge Radio'' in 1997, was broadcast in three formats – live on the radio, live from a RealAudio server and streamed from the web over HTTP. In 1998, the longest running internet radio show,
''The Vinyl Lounge'', began netcasting from Sydney, Australia, from Australia's first Internet radio station, NetFM (www.netfm.net). In 1999, Australian telco "Telstra" launched The Basement Internet Radio Station but it was later shut down in 2003 as it was not a viable business for the company.
From 2000 onwards, most Internet radio stations increased their stream quality as bandwidth became more economical. Today, most stations stream between 64 kbit/s and 128 kbit/s providing near CD quality audio. As of 2017 the
mobile app
A mobile application or app is a computer program or software application designed to run on a mobile device such as a smartphone, phone, tablet computer, tablet, or smartwatch, watch. Mobile applications often stand in contrast to desktop appli ...
Radio Garden, a research project of the
Netherlands Institute for Sound and Vision, was streaming approximately 8,000 radio stations to a global audience.
US royalty controversy
In October 1998, the US Congress passed the
Digital Millennium Copyright Act
The Digital Millennium Copyright Act (DMCA) is a 1998 United States copyright law that implements two 1996 treaties of the World Intellectual Property Organization (WIPO). It criminalizes production and dissemination of technology, devices, or ...
(DMCA), one result of which is that performance royalties are to be paid for
satellite radio
Satellite radio is defined by the International Telecommunication Union (ITU)'s ITU Radio Regulations (RR) as a '' broadcasting-satellite service''. The satellite's signals are broadcast nationwide, across a much wider geographical area than te ...
and Internet radio broadcasts in addition to publishing royalties. In contrast, traditional radio broadcasters pay only publishing royalties and no performance royalties.
[Michael Roberts (May 2, 2002)]
"Digital Dilemma: Will new royalty fees kill Web radio?"
. Westword. Retrieved March 14, 2010.
A rancorous dispute ensued over how performance royalties should be assessed for Internet broadcasters.
[ Doc Searls, (July 17, 2002]
"Why Are So Many Internet Radio Stations Still on the Air?"
''Linux Journal
''Linux Journal'' (''LJ'') is an American monthly technology magazine originally published by Specialized System Consultants, Inc. (SSC) in Seattle, Washington since 1994. In December 2006 the publisher changed to Belltown Media, Inc. in Hous ...
''. Retrieved March 14, 2010. Some observers said that royalty rates that were being proposed were overly burdensome and intended to disadvantage independent Internet-only stations
—that "while Internet giants like AOL may be able to afford the new rates, many smaller Internet radio stations will have to shut down."
[Gray, Hiawatha (March 14, 2007)]
Royalty hike could mute Internet radio: Smaller stations say rise will be too much
''The Boston Globe
''The Boston Globe,'' also known locally as ''the Globe'', is an American daily newspaper founded and based in Boston, Massachusetts. The newspaper has won a total of 27 Pulitzer Prizes. ''The Boston Globe'' is the oldest and largest daily new ...
''. The Digital Media Association (DiMA) said that even large companies, like Yahoo! Music, might fail due to the proposed rates.
[Olga Kharif]
The Last Days of Internet Radio?
March 7, 2007. Retrieved on March 7, 2007. Some observers said that some U.S.-based Internet broadcasts might be moved to foreign jurisdictions where US royalties do not apply.
[Michael Geist (April 9, 2007)]
Web radio may stream north to Canada
''The Toronto Star
The ''Toronto Star'' is a Canadian English-language broadsheet daily newspaper. It is owned by Toronto Star Newspapers Limited, a subsidiary of Torstar Corporation and part of Torstar's Daily News Brands division.
The newspaper was establis ...
''.
Many of these critics organized SaveNetRadio.org, "a coalition of listeners, artists, labels and webcasters"
that opposed the proposed royalty rates. To focus attention on the consequences of the impending rate hike, many US Internet broadcasters participated in a "Day of Silence" on June 26, 2007. On that day, they shut off their audio streams or streamed ambient sound, sometimes interspersed with brief
public service announcement
A public service announcement (PSA) is a message in the public interest disseminated by the media without charge to raise public awareness and change behavior. Oftentimes these messages feature unsettling imagery, ideas or behaviors that are des ...
s voiced, written and produced by popular voiceover artist Dave Solomon. Notable participants included
Rhapsody,
Live365,
MTV
MTV (an initialism of Music Television) is an American cable television television channel, channel and the flagship property of the MTV Entertainment Group sub-division of the Paramount Media Networks division of Paramount Global. Launched on ...
,
Pandora
In Greek mythology, Pandora was the first human woman created by Hephaestus on the instructions of Zeus. As Hesiod related it, each god cooperated by giving her unique gifts. Her other name—inscribed against her figure on a white-ground '' ky ...
,
Digitally Imported and
SHOUTcast.
Some broadcasters did not participate, such as
Last.fm, which had just been purchased for US$280 million by
CBS Music Group. According to a Last.fm employee, they were unable to participate because participation "may compromise ongoing license negotiations."
SoundExchange, representing supporters of the increase in royalty rates, pointed out that the rates were flat from 1998 through 2005 (see above), without being increased to reflect cost-of-living increases. They also declared that if Internet radio is to build businesses from the product of recordings, the performers and owners of those recordings should receive fair compensation.
On May 1, 2007, SoundExchange came to an agreement with certain large webcasters regarding the minimum fees that were modified by the determination of the
Copyright Royalty Board
The Copyright Royalty Board (CRB) is a U.S. system of three copyright royalty judges who determine rates and terms for copyright statutory licenses and make determinations on distribution of statutory license royalties collected by the U.S. Cop ...
. While the CRB decision imposed a $500 per station or channel minimum fee for all webcasters, certain webcasters represented through DiMA negotiated a $50,000 "cap" on those fees with SoundExchange. However, DiMA and SoundExchange continue to negotiate over the per song, per listener fees.
SoundExchange has also offered alternative rates and terms to certain eligible small webcasters, that allow them to calculate their royalties as a percentage of their revenue or expenses, instead of at a per performance rate. To be eligible, a webcaster had to have revenues of less than US$1.25 million a year and stream less than 5 million "listener hours" a month (or an average of 6830 concurrent listeners). These restrictions would disqualify independent webcasters like
AccuRadio,
Digitally Imported, Club977 and others from participating in the offer, and therefore many small commercial webcasters continue to negotiate a settlement with SoundExchange.
An August 16, 2008 ''Washington Post'' article reported that although Pandora was "one of the nation's most popular Web radio services, with about 1 million listeners daily...the burgeoning company may be on the verge of collapse" due to the structuring of performance royalty payment for webcasters. "Traditional radio, by contrast, pays no such fee. Satellite radio pays a fee but at a less onerous rate, at least by some measures." The article indicated that "other Web radio outfits" may be "doomed" for the same reasons.
On September 30, 2008, the
United States Congress
The United States Congress is the legislature, legislative branch of the federal government of the United States. It is a Bicameralism, bicameral legislature, including a Lower house, lower body, the United States House of Representatives, ...
passed "a bill that would put into effect any changes to the royalty rate to which
ecord labels and web castersagree while lawmakers are out of session."
[Miller, Cain Claire (Oct.27, 2008]
Even If Royalties for Web Radio Fall, Revenue Remains Elusive
''The New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
''. Although royalty rates are expected to decrease, many webcasters nevertheless predict difficulties generating sufficient revenue to cover their royalty payments.
In January 2009, the US Copyright Royalty Board announced that "it will apply royalties to streaming net services based on revenue." Since then, websites like
Pandora Radio
Pandora is a subscription-based music streaming service owned by the broadcasting corporation Sirius XM that is based in Oakland, California in the United States. The service carries a focus on recommendations based on the " Music Genome Proje ...
, AccuRadio,
Mog,
8tracks and recently
Google Music have changed the way people discover and listen to music.
The Webcaster Settlement Act of 2009 expired in January 2016, ending a 10-year period in which smaller online radio stations,
Live365 among them, could pay reduced royalties to labels. On January 31, 2016, webcasters who are governed by rules adopted by the Copyright Royalty Board were required to pay to SoundExchange an annual, nonrefundable minimum fee of $500 for each channel and station, the fee for services with greater than 100 stations or channels being $50,000 annually.
See also
*
Comparison of streaming media software
*
E-commerce
E-commerce (electronic commerce) refers to commercial activities including the electronic buying or selling products and services which are conducted on online platforms or over the Internet. E-commerce draws on technologies such as mobile co ...
*
Internet radio audience measurement
*
TuneIn
*
Internet radio device
An Internet radio device, also called network music player is a hardware device that is capable of receiving and playing streaming media, streamed media from either Internet radio stations or a home network.
Background
Streaming media became main ...
*
Internet radio licensing
*
Internet talk radio
*
List of Internet radio stations
This is a list of Internet radio stations, including traditional broadcast stations which stream programming over the Internet as well as Internet-only stations.
General
BBC
Radio France
Indian Internet Radios
* Boxout.fm
* RadioJoyAlu ...
*
List of campus radio stations
*
List of college web-only stations in the U.S.
*
List of streaming media systems
This is a list of streaming media systems. A more detailed comparison of streaming media systems is also available.
Servers
* Ampache – GPL/LGPL Audio streaming
**atmosph3re – responsive web-based streaming audio server for personal music ...
*
Mbone
Mbone (short for " multicast backbone") was an experimental backbone and virtual network built on top of the Internet for carrying IP multicast traffic on the Internet. It was developed in the early 1990s and required specialized hardware and ...
, experimental "multicast backbone"
*
Radio music ripping
*
Radio over IP
*
Radiobeta
*
Simulcast
Simulcast (a portmanteau of "simultaneous broadcast") is the broadcasting of programs or events across more than one resolution, bitrate or medium, or more than one service on the same medium, at exactly the same time (that is, simultaneously) ...
References
Further reading
*
*
*
*
*
{{Authority control
Media formats
Streaming
Radio
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connec ...