Auralisation With Acoustic Prediction Software
Given a 3D model of a room and the acoustic properties of the surfaces, we can calculate at any location the room ‘response’. This response is a digital filter that encodes all sound modifications as it propagates from the source to the receiver. From here the Auralisation starts process, with this filter we can reproduce the sound as if it was heard in the room or calculate several quality criteria in order to evaluate the room acoustics. These criteria can then be visualized in order to help the designers improve the room acoustic quality.
- Sound signals can be assessed by different sounds recorded in an anechoic chamber and then convolved with room impulse responses that can be created by acoustic simulation. It has been shown that Auralisation technique with simulated BRIRs is capable of assessing subjective speech intelligibility of listening positions in the room with highly realistic 3D sound and out-of head localization.
The principle of Auralisation is based on the following factors: –
1. Type of sound source and receiver
2. Position and orientation of the source and the receiver
3. Transmission consideration
4. Binaural Room Impulse Response (BRIR) derived from the above points and size, shape and absorption coefficients and scattering coefficient of all surfaces and objects
5. Anechoic signal convolved with BRIR
On our webpage you can evaluate some examples of Auralisation in different environments www.odeon.dk/auralisation. You can also avail for newsletters containing regular new updates, downloads, courses, publications, applications & use, best practice, and a lot more, if you register on our website. Odeon A/S regularly participates in conventions and exhibitions such as Audio Engineering Society, Euronoise, Internoise, ICA. Courses & Classes related to advanced room acoustics is being held 2-4 times a year. Furthermore you can join the Facebook Group “Odeon users”, to meet Odeon users and ask questions about the program.
If you are interested to know more about Acoustic Prediction Software , please search our site for more in-depth information and resources.
Article Source: http://www.articlesbase.com/technology-articles/auralisation-with-acoustic-prediction-software-1409340.html
About the Author
Gry B. Nielsen, Director Sales and Marketing Odeon A/S, M.Sc. In Civil Engineering and Acoustics and advanced user of Odeon. http://www.odeon.dk/