dBJury:

dBJury: Evaluate the Sound Quality of your products!
As an application software dedicated to the subjective evaluation of your products sound quality dBJury gives access to ranking of sound recordings on a perceptual scale. dBJury enables to define listening sessions and listening procedures that drive the users along the evaluation process. The software is based on TCP/IP communication. Therefore, several evaluations can be performed at the same time on the same/different sessions on different PCs/Laptops. No specific organization such as room reservation, planning management is needed, leading to a highest reactivity in the diagnosis or design of industrial products.

Key features

Developed in partnership with psycho acousticians of international fame

Listening sessions can be conducted at the same time at any place in the world
Stand alone sound evaluation application

The power of TCP/IP communication

TCP/IP communication between a server application which controls the sessions database, and listener applications deployed on different PCs
Safe databases stored on a unique PC.
The results of the test are transferred in real time from the listener workstation
The listeners are completely autonomous.
The sound evaluation can be performed at any time, at any place without the assistance of a master person

The best algorithms and facilities for a relevant sound ranking

Statistical algorithms implemented from the latest research of reputed research labs
Creation of groups of listeners for comparative analyses
Exportation of results for correlation with psychoacoustic parameters
Exportation of preferences results for further analyses

dBJury Technical Specifications

Sound calibration

Importation of calibrated wav files
Possibility to adjust the sound level manually or with a volume control
Calibrated levels capabilities for different sound cards (Vxpocket V2, Vxpocket 440, Lynx One)

Headphone equalization

Provision of standard equalization filters (real-time effective)
Possibility to extend the list of equalization headphone filters (on request)

Methodology and statistical analyses

Minimization of the evaluation subjectivity: wizard graphical principle, minimum choice principle, autonomy principle,
Methods of evaluation: absolute, paired comparison and mixed approach
Paired comparison according to Linear, Thurstone V, and BTL methods

Sessions set up

Creation/edition/modification/duplication of sessions,
Possibility to define 3 modes for each session: preparing, open and close

Follow-up of the session in progress

Indication of the evaluation stage for each listener in the supervisor application
Possibility to identify the listeners connected to the Jury testing server

Data edition and Export

Group set-up
Mean and confidence interval display
Curve superimposition
Cursor for sound selection and playback
Preference result exportation in HTML format
Copy/paste of graphics
Exportation of the analysis results

dBJury:

Key features

dBJury Technical Specifications

Mesure des vibrations et des nuisances sonores