Comprendre la formation des ondes sonores et le fonctionnement des oscillogrammes
Un oscillogramme est un document produit par un oscillographe ou un oscilloscope. L'oscillogramme est le moyen le plus facile pour créer une représentation graphique du bruit ou d'un son, car il indique l'évolution de la pression acoustique au fil du temps.
L'oscillogramme d'un bruit ou d'un son représente la variation de la pression acoustique en fonction du temps. Normalement, il s'agit de la pression instantanée et non de la pression effective. Dans le cas de bruits parfaitement fixes, la valeur effective de la pression acoustique reste constante avec le temps et par conséquent, le diagramme représentant cette pression n' st pas très utile. En ce qui concerne le bruit non stationnaire, la pression effective, de même que la pression instantanée, varient avec le temps: cela nécessite donc une représentation sous la forme d'un oscillogramme.
Dans le schéma ci-dessous, nous pouvons voir trois formes d'ondes pour deux sons périodiques et non stationnaires. La pression instantanée est également indiquée en fonction du temps.
Naturellement, une onde sonore est formée des compressions et des expansions de l'air, ce qui signifie que ces compression-expansions sont générées périodiquement ou non.
Une forme périodique correspond à un son pur ou un ton. Toutes les autres variations lors de la compression-détente de l'air se traduiront par une forme non périodique c'est à dire par du bruit. Par conséquent, il convient de se rappeler qu'un oscillogramme est la représentation d'un son. Plus techniquement, il est une représentation de la variation de la pression acoustique en fonction du temps.
Grâce à l'oscillogramme, on peut dire que:
Une onde sonore = des compressions et des expansions.
Un son pur = une forme périodique.
Un son apériodique = bruit
Technical cookies are strictly necessary for our website to function and to be able to navigate through it. These types of cookies are those that, for example, allow us to identify you, give you access to certain restricted parts of the page if necessary, or remember different options or services already selected by you, such as your privacy preferences. Therefore, they are activated by default, your authorization is not required in this regard.
Through the configuration of your browser, you can block or alert of the presence of this type of cookies, although said blocking will affect the correct functioning of the different functionalities of our website.
The analysis cookies allow us to study the navigation of the users of our website in general (for example, which sections of the page are the most visited, which services are used the most and if they work correctly, etc.).
Based on the statistical information on navigation on our website, we can improve both the operation of the page itself and the different services it offers. Therefore, these cookies do not have an advertising purpose, but only serve to make our website work better, adapting to our users in general. By activating them you will contribute to this continuous improvement.
You can activate or deactivate these cookies by checking the corresponding box, being deactivated by default.
Functionality cookies allow us to remember your preferences, to customize certain characteristics and general options of our website to your needs, each time you access it (for example, the language in which the information is presented, the sections marked as favorites, your browser type, etc.).
Therefore, these types of cookies do not have an advertising purpose, but by activating them you will improve the functionality of the website (for example, adapting to your type of browser) and the personalization of it based on your preferences (for example, presenting the information in the language you have chosen on previous occasions), which will contribute to the ease, usability and comfort of our page during your navigation.
You can activate or deactivate these cookies by checking the corresponding box, being deactivated by default.
Advertising cookies allow us to manage the advertising spaces included on our website based on criteria such as the content displayed or the frequency with which the ads are displayed.
For example, if you have been shown the same ad on our website several times, and you have not shown personal interest by clicking on it, it will not appear again. In summary, by activating these types of cookies, the advertising displayed on our website will be more useful and diverse, and less repetitive.
You can activate or deactivate these cookies by checking the corresponding box, being deactivated by default.
Behavioral advertising cookies allow us to obtain information based on observing your browsing habits and behaviors on the web, in order to be able to show you advertising content that better suits your personal tastes and interests.
So that you understand it very simply, we will give you a fictitious example: if your last searches on the web were related to suspense literature, we would show you advertising about suspense books.
Therefore, by activating this type of cookies, the advertising that we show you on our website will not be generic, but will be oriented to your searches, tastes and interests, therefore adjusting exclusively to you.
You can activate or deactivate these cookies by checking the corresponding box, being deactivated by default.
So that you understand it very simply, we will give you a fictitious example: if your last searches on the web were related to suspense literature, we would show you advertising about suspense books.
Therefore, by activating this type of cookies, the advertising that we show you on our website will not be generic, but will be oriented to your searches, tastes and interests, therefore adjusting exclusively to you.
You can activate or deactivate these cookies by checking the corresponding box, being deactivated by default.
Welcome to the basic information about cookies on the website responsibility of the entity: Acustica Integral SL
We use our own and third-party cookies to analyze our services and show you advertising related to your preferences based on a profile prepared from your browsing habits (for example, pages visited).
You can accept all these cookies by pressing the ACCEPT button or configure them or reject their use by clicking on the COOKIES CONFIGURATION section.
For more information, see the COOKIES POLICY on our website.
