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Focused and directional sound beam horn(s) for automobiles: Reduction of spatial noise [noise pollution] in traffic and dynamic change of sound beam according to geographical terrain

IP.com Disclosure Number: IPCOM000035669D
Published in the IP.com Journal: Volume 5 Issue 2 (2005-02-25)
Included in the Prior Art Database: 2005-Feb-25
Document File: 3 page(s) / 331K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Working and living around busy traffic locations is very painful due to continuous traffic and horn noise. Alerts by horns are very important in a busy traffic scenario but this might not be of importance to people working in closed premises around or for pedestrians. The usage of omni-directional horns or sirens can lead to health problems on prolonged exposure. Omni-directional means that i.e. horn speakers produce pressure waves, which disperse in all directions. But this horn sound is information only for some people and nuisance for all the others. The idea lies in shaping the sound around an automobile so that the information of the alert is directional and specific to people who are in direct contact with traffic. This leads to minimization of sound decibel levels around roads and highways. So, pedestrians will not be affected much around busy traffic. The technical solution to this is a horn sound using directional sound beam, which is shaped for traffic in front and rear only, thus reducing spatial noise around the automobile and inside. The directional sound horn speaker system can be realized as single or array version. The sound beam can also be shaped according to geographical locations with the use of onboard micro-controllers or signal processors.

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Focused and directional sound beam horn(s) for automobiles: Reduction of spatial noise [noise pollution] in traffic and dynamic change of sound beam according to geographical terrain

Idea: Allaukik Abhishek, IN-Bangalore

Working and living around busy traffic locations is very painful due to continuous traffic and horn noise. Alerts by horns are very important in a busy traffic scenario but this might not be of importance to people working in closed premises around or for pedestrians. The usage of omni-directional horns or sirens can lead to health problems on prolonged exposure. Omni-directional means that i.e. horn speakers produce pressure waves, which disperse in all directions. But this horn sound is information only for some people and nuisance for all the others.

The idea lies in shaping the sound around an automobile so that the information of the alert is directional and specific to people who are in direct contact with traffic. This leads to minimization of sound decibel levels around roads and highways. So, pedestrians will not be affected much around busy traffic.

The technical solution to this is a horn sound using directional sound beam, which is shaped for traffic in front and rear only, thus reducing spatial noise around the automobile and inside. The directional sound horn speaker system can be realized as single or array version. The sound beam can also be shaped according to geographical locations with the use of onboard micro-controllers or signal processors.

Figure 1 shows the comparison of omni-directional sound beam in comparison with uni-directional focused sound beam.

The single speaker system will involve the installation as shown in Fig. 2. The range of the beam will be limited to traffic in front and to the rear of the automobile. It is imperative in such situations that only the horn sound beam affects the traffic lane, and that the noise does not affect the pedestrians and the residents around. The novelty is not only in usage of the directional horns in the system but also to install an array of such speakers so as to actively adapt and sha...