Science Festival

october 4 to 14, 2024

National theme: AN OCEAN OF KNOWLEDGE

LabEx CeLyA presented various workshops to a school audience on Thursday 10 and Friday 11 October 2024 at the Village des Sciences of the IUT Lyon 1 on the Doua campus.

"TRACE TON SON"

Several interactive experiments will allow to discover sound, acoustic waves and the means to analyse them. The workshop will allow you to discover, among other things, the Fourier analysis developed more than two centuries ago to describe the frequency content of sounds, using the Spectroïd application. Fourier is omnipresent at the heart of current digital technologies related to signals, images and telecommunications.

"FIGURES DE VIBRATIONS DE L'AIR OU D'UNE STRUCTURE"

Under the effect of an external excitation (sound or vibration), a structure vibrates according to particular shapes, which depend on its characteristics and on the frequency of the excitation.
There are simple ways to demonstrate these particular shapes, which will be shown during the workshop: Chladni curves (vibration of a plate), or the equivalent in a Plexiglas tube, vibrations of a vibrating string.
The objective is to let the participants manipulate the devices, allowing them to measure that, depending on the frequency of the excitation they adjust, the structure behaves in a different way

 

the full program here

the full program here

back in pictures here

"VOYAGE AU CENTRE DU CERVEAU MUSICAL"

 
Using a dummy-tablet device and musical instruments, the workshop participants discover hearing and the brain mechanisms
that allow us to perceive music
Grimault Nicolas & Perrin Fabien CRNL, Team CAP - Mathieu Lavandier LTDS ENTPE
 

"RESONANCE DE CAVITE"

 When you blow on the neck of a bottle or on the opening of a tube, it can make noise (and a lot of it!) Where does this phenomenon come from, and what can be done to modify the sound thus produced, or even eliminate it in cases where it would be really annoying? Thanks to test benches illustrating the phenomenon of cavity resonance, experiments are carried out to adopt a scientific approach to analysing the problem together.
Thomas Castelain - LMFA – Centre Acoustique ECL

"J'ENTENDS BIEN MAIS J'COMPRENDS PAS TOUT"

 Through small listening exercises on a touch tablet, children will discover the importance of noise in speech perception. They will also discover, through the simplified processing of results, how researchers build an experimental protocol and present scientific results
Annie Moulin & Anne Caclin – CRNL, équipe PAM
Effecbruit & Cogaudys, projets soutenus par la région Auvergne Rhône Alpes

"FIGURES DE VIBRATIONS DE L'AIR OU D'UNE STRUCTURE"

 Under the effect of an external excitation (sound or vibration), a structure vibrates according to particular shapes, which depend on its characteristics and on the frequency of the excitation.
There are simple ways to demonstrate these particular shapes, which will be shown during the workshop: Chladni curves (vibration of a plate), or the equivalent in a Plexiglas tube, vibrations of a vibrating string.
The objective is to let the participants manipulate the devices, allowing them to measure that, depending on the frequency of the excitation they adjust, the structure behaves in a different way
Etienne Parizet - LVA – Laboratoire Vibrations Acoustique

"TRACE TON SON"

 Several interactive experiments will allow to discover sound, acoustic waves and the means to analyse them. The workshop will allow you to discover, among other things, the Fourier analysis developed more than two centuries ago to describe the frequency content of sounds, using the Spectroïd application. Fourier is omnipresent at the heart of current digital technologies related to signals, images and telecommunications.
Barbara Nicolas et Adeline Bernard - CREATIS
 

see the exhibition "30 years of the science festival" here

 

This year, and despite a complicated health context, three of the LabEx CeLyA laboratories were able to give face-to-face presentations on 8 and 9 October in several primary schools in the Lyon Metropole.

- CRNL - Lyon Neuroscience Research Centre and LGCB - Civil Engineering and Building Laboratory

Auditory perception: from the ear to the brain

The aim is to explain to a young audience (primary school) how the auditory system works and to make them understand that "we don't only hear with our ears" but also and above all "with our brain".


- CREATIS - Research Centre in Image Acquisition and Processing for Health

Medical ultrasound: its past, today and in the future...

This twenty-minute workshop, accessible to all, will retrace the history of medical ultrasound, illustrate how it works today, and give hints for its future development.


- CREATIS - Research Centre for Image Acquisition and Processing for Health

What is the shape of sound? (From Joseph Fourier to today's digital technologies)

Several interactive experiments will allow us to discover the applications of Fourier's analysis developed more than two centuries ago. We will show that Fourier is omnipresent at the heart of today's digital technologies related to signals, images and telecommunications.

The Equipe de Neuro-Ethologie Sensorielle de Saint-Etienne (ENES CRNL) has proposed remote meetings
 

Marilyn Beauchaud, teacher-researcher, and Emilie Rojas, first-year doctoral student, proposed videos accompanied by video-conference meetings from the classroom (website)
on the following topics

- communication in fish

- Does noise pollution affect fish?

 

A look back at the 28th edition of the Science Festival, from Saturday 5 to Sunday 13 October 2019

 

           

 

- CRNL - Lyon Neuroscience Research Centre and LGCB - Civil Engineering and Building Laboratory

Auditory perception: from the ear to the brain

The aim is to explain to a young audience (primary school) how the auditory system works and to make them understand that "we don't only hear with our ears" but also and above all "with our brain".

- CREATIS - Research Centre in Image Acquisition and Processing for Health

Medical ultrasound: its past, today and in the future...

This twenty-minute workshop, accessible to all, will retrace the history of medical ultrasound, illustrate how it works today, and give hints for its future development.

- CREATIS - Research Centre for Image Acquisition and Processing for Health

What is the shape of sound? (From Joseph Fourier to today's digital technologies)

Several interactive experiments will allow us to discover the applications of Fourier's analysis developed more than two centuries ago. We will show that Fourier is omnipresent at the heart of today's digital technologies related to signals, images and telecommunications.

LTDS - Tribology and Systems Dynamics Laboratory

The little noises of everyday life!

This workshop offers demonstrations of friction, impact, creaking, squeaking and crackling noises in everyday objects and musical instruments. Devices will be used to reproduce the sounds and to understand their origin

LVA - Acoustic Vibration Laboratory

Demonstration of vibratory modes (vibrating plates with sand) and acoustic modes (tube filled with small particles)

The response of mechanical systems to a sound or vibration excitation is particularly strong at certain frequencies, which are called eigenfrequencies of the system. Each eigenfrequency is associated with an eigenmode, which designates the pattern in which the system deforms at that frequency.
These eigenmodes and frequencies depend on the mechanical system (for a plate, for example, on its shape, thickness and material characteristics). Their knowledge is essential for the acoustic development of a product.
This workshop proposes the experimental research of eigenmodes and eigenfrequencies in two cases: a plate which vibrates and a tube on which a loudspeaker is fixed.
 

WORKSHOPS PRESENTED DURING THE 2019 EDITION BY THE LABORATORIES AFFILIATED TO THE JEAN MONNET UNIVERSITY - SAINT ETENNE

ENES Laboratory :
Animal communication
For more informations
clic here

teaser

Download here the report on the coordination of the Lyon and Rhône Metropolitan Area




 

CREATIS – Centre de Recherche en Acquisition et traitement de l’Image pour la Santé

Barbara NICOLAS

A visit inside human body: ultrasound takes you on a journey !
Public : General public, Students from 4th to 12th grade, post-baccalaureate.
Workshop duration: adaptable between half an hour and an hour
Description : The CREATIS laboratory offers you the opportunity to discover the basic principles of ultrasound, to experiment it in vivo and to present you new imaging techniques developed by the researchers.

Didier VRAY
250 years after his birth, Joseph Fourier remains at the heart of digital technologies
Public : General public, schoolchildren
Workshop duration : half an hour
Description :Several interactive experiments will allow to discover the applications of Fourier analysis developed more than 2 centuries ago. We will show that Fourier is omnipresent at the heart of current digital technologies related to signal, image and telecommunications.

LTDS – Laboratoire de Tribologie et Dynamique des Systèmes
Alain LE BOT
The little noises of daily life!
This workshop proposes demonstrations of friction noise, impact noise, squealing, screeching, cracking, in everyday objects or musical instruments. Devices will make it possible to reproduce sounds and understand their origin.

CRNL – Centre de Recherche en Neurosciences de Lyon
Nicolas GRIMAULT and Mathieu Lavandier (LGCB-ENTPE)
Auditory perception: from ear to brain
It will be about explaining to a young audience how the hearing system works and making them understand "that we hear not only with our ears" but also and especially "with our brain".

 

LVA – Laboratoire Vibrations Acoustique
Etienne PARIZET
Highlighting of vibration modes (vibrating plates with sand) and acoustic modes (tube filled with small particles)
The response of mechanical systems to sound or vibration excitation is particularly strong at certain frequencies, known as the system's natural frequencies. Each natural frequency is associated with a natural mode, which refers to the rate at which the system deforms at that frequency.
These modes and natural frequencies depend on the mechanical system (for a plate for example, its shape, thickness, material characteristics). Their knowledge is essential for the acoustic development of a product.
This workshop proposes the experimental research of eigenmodes and eigenfrequencies in two cases: a plate that vibrates and a tube on which a loudspeaker is fixed.