Monday, October 7 2:00 pm 4:30 pm
SESSION L: AUDIO NETWORKING AND AUTOMOTIVE AUDIO
Chair: John Strawn, S Systems, Larkspur, CA, USA
L-1 Studio Exploring Using Universal Plug and PlayRob Laubscher1, Richard Foss2 - 1Seattle, WA, USA; 2Rhodes University, Grahamstown, South Africa
This paper explores the use of universal plug and play (UPnP) as a studio control technology. The architecture of a possible studio control technology is introduced. The elements of this studio control architecture are related to the architecture of UPnP. A sample implementation demonstrates the key aspects of using UPnP as a studio control technology.
Convention Paper 5698
L-2 mLAN: Current Status and Future Directions Jun-chi Fujimori1, Richard Foss2 - 1Yamaha Corporation, Hamamatsu, Japan; 2Rhodes University, Grahamstown, South Africa
mLAN describes a network that allows for the transmission and receipt of audio and music control data by audio devices. IEEE 1394 was chosen as the specification upon which to implement mLAN. mLAN has built on IEEE 1394 and related standards, introducing formats, structures, and procedures that enable the deployment of IEEE 1394 within a music studio context. This paper discusses these standards, their implementations, and provides pointers to the future evolution of mLAN.
Convention Paper 5699
L-3 Mutually-Immersive Audio TelepresenceNorman P. Jouppi1, Michael J. Pan2 - 1HP Labs, Palo Alto, CA, USA; 2UCLA, Los Angeles, CA, USA
Mutually-immersive audio tele-presence attempts to create for the user the audio perception of being in a remote location, as well as simultaneously to create the perception for people in the remote location that the user of the system is present there. The system provides bi-directional multichannel audio with relatively good fidelity, isolation from local sounds, and a reduction of local reflections. The system includes software for reducing unwanted feedback and joystick control of the audio environment. We are investigating the use of this tele-presence system as a substitute for business travel. Initial user response has been positive, and future improvements in networking quality of service (QOS) will improve the interactivity of the system.
Convention Paper 5700
L-4 Assessment of Sound Field in a CarChulmin Choi1, Lae-Hoon Kim1, Sejin Doo2, Yangki Oh3, Koeng-Mo Sung1 - 1Seoul National University, Seoul, Korea; 2Dong-Ah Broadcasting College, Ansung, Korea; 3Mokpo National University, Mokpo, Korea
This paper describes the measurement and assessment method for the sound field in a car cabin, which is so small that conventional room acoustical parameters cannot be employed directly. First, we measured the sound field using a multichannel microphone system and calculated some room acoustical parameters for judging their validity in the car cabin. As a result, we concluded that many of the conventional parameters do not have useful meaning in a car and its audio system. By analyzing the impulse responses from many cars, we developed some parameters for a more profound assessment of the sound field in a car.
Convention Paper 5701
L-5 Measurement of the Speech Intelligibility Inside CarsAngelo Farina, Fabio Bozzoli, University of Parma, Parma, Italy
The paper describes a measurement system developed for assessing speech intelligibility inside car compartments. This relates directly to the understandability of the voices being reproduced through the radio receiving system (news, traffic information, etc.), but in the future it will also be used for assessing the direct speech communications between the passengers and the performance of hands-free communication devices. The system is based on the use of two head-and-torso simulators, one equipped with an artificial mouth, the second equipped with binaural microphones. Only the second is used when the sound is being reproduced through the cars sound system. The MLS-based version of the STI method is used for performing the measurements, taking into account the effect of the background noise and the electro-acoustic propagation inside the compartment.
Convention Paper 5702