On 29th February 2000, The Directorate General of Telecommunications, Ministry of Transportation and Communications, announced the result of selection for DAB (Digital Audio Broadcasting) experimental digital broadcasting. From that moment, many FM Radio Stations initiated their DAB digital broadcasting. Compared with FM Radio, AM Radio is slower on initiating digital broadcasting. However, new technology continuously comes out. The integration of media technology has a great influence on the media broadcasting model. The emergence of new media accelerates the decline of traditional media. Earlier emerging than internet, TV and FM Radio industries, how will AM Radio strive for continuance and development? To encourage existing AM Radio in initiating their digital future, the Ministry of Transportation and Communications announced the project of experimental digital broadcasting of IBOC AM and DRM on June 3rd, 2004. It is worth for the research scholars to study how the AM Radio initiates digital broadcasting and what the influential factors are. Therefore, this research is trying to find the factors which turn AM Radio to the digital future, and also discuss what factors will encourage radio enterprenors to initiate digital broadcasting, what kind of digital system is appropriate for AM Radio, and what the situation is for experimental DRM broadcasting in Taiwan. We are trying to find out the factors turning AM Radio to the digital future, and make AM Radio (with declining listening ratio and poor reception quality) improve the performance, as well as create new core value of AM Radio Industry. According to the objective and motivation above-mentioned, we designed and proceeded this research as follows: We started from an investigation on 28 AM Radio Stations in Taiwan to know their needs for digital broadcasting, and then collected data and made statistic analysis based on the questionnaires returned. We also took interviews with professional people assisting in DRM digital broadcasting for AM Radio. Besides, we participated in the World DAB Forum Conference held in Taiwan in this year, and finally went into a conclusion and some suggestions. We found from the information in questionnaires that the factors making AM Radio to initiate digital broadcasting are not precise. However, we know more about how the digital broadcasting is going among AM Radio Stations, from the information collected by interviewing professional people who assist in DRM digital broadcasting for AM Radio. It will bring advantages in competition for AM Radio Stations to initiate digital broadcasting. Thus, it can not wait to turn to digital future. The Radio enterprenors should use technology well and increase additional value. They have to follow the trend, develop new co-operation model, and establish their brand image. They should also enhance on inspection of program contents, and hold success factors. They can increase reception ratio only with fine broadcasting, excellent program contents, good reception quality and perfect marketing strategy. As to the technical people, they need to care about the development on technology, and provide new information for management to make decision. Besides, the policy of government must be precise, in order to encourage Radio enterprenors in initiating digital broadcasting. The above conclusion could be the reference in digital radio research.

[pt] Em 2010, o Ministro das Comunicações instituiu o Sistema Brasileiro de Rádio Digital (SBRD). No entanto, um modelo de referência para o sistema ainda não foi definido. Este trabalho apresenta uma análise da radiodifusão sonora terrestre no Brasil e a partir desta são inferidos alguns requisitos para um rádio digital interativo. Esses requisitos são então utilizados para nortear a pesquisa. A relevância e importância do uso da NCL e do Ginga no rádio digital brasileiro, assim como acontece no Sistema Brasileiro de TV Digital (SBTVD), são discutidas, e a definição da forma como deve ser feito o transporte de aplicações NCL nos dois sistemas de rádio digital sendo considerados para adoção pelo país é realizada. Um novo perfil da linguagem NCL para o rádio digital é definido. Esse novo perfil recebeu o nome de perfil Digital Radio, ou simplesmente DR. O Ginga também é definido para uso em receptores de rádio digital, sendo que novos exibidores de mídia e recursos adaptados ao contexto do rádio digital são introduzidos. A implementação do Ginga da PUC-Rio é apresentada com as modificações necessárias para o rádio digital. Adicionalmente, um ambiente para validar a interatividade no rádio digital com o Ginga foi montado e testes exercitando toda a cadeia de transmissão e recepção de rádio digital com aplicações NCL embutidas foram realizados. As definições e conclusões que resultaram da pesquisa visam contribuir para a definição de um Sistema Brasileiro de Rádio Digital que seja poderoso em termos comunicacionais e agregue os recursos mais relevantes para o meio na era digital. / [en] In 2010, the Minister of Communications instituted the Brazilian Digital Radio System (SBRD), however a reference model for the system has not yet been set. This text presents an analysis of the terrestrial radio broadcasting in Brazil and presents some requirements for an interactive digital radio. These requirements are then used to guide the research. The relevance and importance of the use of NCL and Ginga in the Brazilian digital radio as in Brazilian Digital TV System (SBTVD), are discussed, and the definition of how the transport of NCL applications should be done in the two digital radio systems being considered for adoption by the country is performed. A new profile of NCL for use in digital radio is defined. This new profile was named Digital Radio Profile, or just DR. Ginga is also defined for use in digital radio receivers, and new media players and features adapted to the digital radio context are introduced. PUC-Rio s implementation of the Ginga middleware is presented with the necessary modifications for digital radio use. In addition, an environment to validate the interactivity in digital radio with the Ginga was assembled and tests exercising the entire digital radio chain of transmission and reception with embedded NCL applications were performed. The definitions and conclusions that resulted from research activities are expected to contribute to the definition of a Brazilian Digital Radio System that is powerful in communicational terms and aggregates the most relevant technologies for the medium in the digital age.