Experienced truck drivers prefer sound that provides them with information about how the journey is proceeding and they do not view information-bearing sound as a disruption.
This has been demonstrated by Anders Genell at the Division of Applied Acoustics at Chalmers University of Technology in Sweden.
He has carried out a series of tests using a model truck cab, where the subjects are exposed to different sound images and sometimes vibrations in the steering wheel and floor. The emotional reactions were examined using two test groups - experienced truck drivers and students.
"The subjects were asked to state how positive or negative and how calm or stressed they felt," explains Anders Genell. It emerged that the students regarded the sound as being mostly noise whilst the drivers regarded certain parts of the sound as positive as it provided them with information."
Taking into account the experience of the test subjects and the information content of the sound is a new approach when it comes to evaluating sound in a truck cab. Anders Genell has been an industrial PhD student at Volvo Trucks, and he wants to develop his know-how in this field.
"In the past the basic assumption has been that all sound is noise and the aim has been to reduce the peaks in the sound image. But if no sound is prominent then all that remains is general noise-like sound which is of no use to the drivers."
Examples of sound which the drivers want to hear is sound that indicates when the engine is working as it should when under pressure, such as on an incline or when accelerating. In addition, they want a discreet engine sound in order to be able to listen to talking books or music. They also want some sound from the tyres on the road surface, which among other things provides them with information about how slippery it is.
The dissertation also shows that an overall approach to sound and vibrations must be taken in order to create a good working environment. If you influence one of the sources of sound or vibration then the perception of all the others is changed.For further information, please contact:
Tel: +46 31-772 22 17, mobile: +46 708-39 12 40; firstname.lastname@example.org
Main supervisor: Professor Mendel Kleiner, Division of Applied Acoustics, Department of Civil and Environmental Engineering, Chalmers University of Technology; Tel: +4631-772 22 06; email@example.comPressofficer Sofie Hebrand;
Sofie Hebrand | idw
New players, standardization and digitalization for more rail freight transport
16.07.2018 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
A helping (Sens)Hand
11.04.2018 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO
A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter
A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.
Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...
The technology could revolutionize how information travels through data centers and artificial intelligence networks
Engineers at the University of California, Berkeley have built a new photonic switch that can control the direction of light passing through optical fibers...
Physicists observe how electron-hole pairs drift apart at ultrafast speed, but still remain strongly bound.
Modern electronics relies on ultrafast charge motion on ever shorter length scales. Physicists from Regensburg and Gothenburg have now succeeded in resolving a...
Engineers create novel optical devices, including a moth eye-inspired omnidirectional microwave antenna
A team of engineers at Tufts University has developed a series of 3D printed metamaterials with unique microwave or optical properties that go beyond what is...
17.04.2019 | Event News
15.04.2019 | Event News
09.04.2019 | Event News
18.04.2019 | Life Sciences
18.04.2019 | Physics and Astronomy
18.04.2019 | Life Sciences