Audio Entertainment Research Articles

Mobile audio distribution

This paper presents a new concept for future audio entertainment distribution. The idea is to make music a service, not a product. All the music in the world will be available to the users wherever they are with an enhanced mobile telephone. The system has push and pull services. The push services send content that suits the users' profiles to a device without any user interaction. Thus there are no real-time demands and content can be sent with low priority or scheduled for a period with spare capacity. The pull services require user interaction and need more bandwidth, since users expect a reasonable response time. This approach solves the extensive problems with copyright infringement. The content is encrypted and can only be accessed via a key. Since users will have access to unlimited music resources for a reasonable price, they will not bother to copy music illegally.

A digital receiver design for AM stereo signals using a general purpose digital signal processor

Digital signal processing (DSP) techniques are becoming the standard for high quality digital sound on compact disks and digital audio tapes in consumer audio entertainment systems. Incorporating DSP technology to improve the quality of AM (amplitude modulation) and FM (frequency modulation) stereo radio reception assures high fidelity performance for all radio functions. The paper only deals with the AM stereo problem. It discusses the compatible quadrature amplitude modulation AM stereo decoding and how it can be digitally implemented on a general purpose digital signal processor (GPDSP).< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

VAEIS: Hybrid Pay-TV

The concept of Video and Audio Entertainment and Information Services (VAEIS), a hybrid pay-TV is discussed. VAEIS uses the AUSSAT satellite and other technologies and carries programs with minimal regulations to pubs and clubs.

Wireless aircraft passenger audio entertainment system

Audio information in several audio channels is supplied via head sets to passengers seated aboard an aircraft in rows of seats including armrests and being distributed along an elongate passenger section inside a metallic fuselage. According to the subject invention, an antenna is run along the elongate passenger section of the aircraft for radio transmission inside such elongate passenger section. Individual antennas are provided for the passenger seats for receiving the latter radio transmission. These receiving antennas are distributed among predetermined armrests of the passenger seats. The audio information to be transmitted is provided in radio frequency channels in a band between 72 and 73 MHz. The distributed receiving antennas are coupled via seated passengers to the transmitting antenna. The radio frequency channels are transmitted in the mentioned band via the transmitting antenna, seated passengers and distributed receiving antennas to the predetermined armrests. Audio information is derived in the audio channels from the transmitted radio frequency channels also in the predetermined armrests. Passengers are individually enabled to select audio information from among the derived audio information in the audio channels. The selected audio information is applied individually to the headsets.

Acoustic coupling system

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