SenseLabOnlineTM web application helps you run fast and reliable listening tests over the internet or in the lab.
SenseLabOnlineTM is available in solutions ranging from standard compliant ITU-R test methods like MUSHRA to advanced fully synchronized 4k audio/visual testing using VR headsets and multichannel loudspeaker reproduction.
Web application for listening tests
SenseLabOnlineTM enables professional and efficient evaluation of audio. It is suitable for product development in industries such as:
- Audio coding
- Headphones and loudspeakers
- Hearing aid industry
By using SenselabOnlineTM, you can easily design and conduct a range of standard compliant listening test recognized by the audio industry in a fast, reliable and easy-to-use way - thereby saving time and money.
An in-house tool that facilitates listening tests
SenseLabOnlineTM employs best-practices within execution of listening tests, including enabling double-blind experimentation, automatic or custom randomisation of stimuli, precise playback, optimised user interfaces, easy handling of assessors, setup of test sequences, and automatic statistical analysis of test data and assessor performance.
The application runs in a browser utilizing either the newest web-based audio interface, WebAudio, tested extensively to ensure high quality audio reproduction or via the proprietary advanced sound player with full hardware control over ASIO drivers.
SenseLabOnlineTM is delivered with templates for attribute tests, preference tests, discrimination tests, suitability tests and other test types. Among the templates are a selection of commonly used ITU-compliant listening test methods.
Once you have registered as a user of SenseLabOnlineTM, you can sign in and build a range of standard compliant, as well as custom listening tests.
Because the system is built to run in a HTML5 compatible browser, you can distribute a listening test across physical locations (depends on internet connectivity). All data transformation is done in Secure Socket Layer (SSL), and the application is approved with industry standard code signing certificates.
Available test types of SenseLabOnlineTM
SenseLabOnlineTM offers a number of listening test templates that are easy to configure:
- ITU-R BS.1116-3
- ITU-R BS.1534-3 (MUSHRA)
- ITU-T P.835
- ITU-T P.800 ACR/CCR/DCR
- Triangle test (ISO 4120)
- Pairwise comparison (ISO 5495)
- ABX/Duo-trio test (ISO 10399)
- Multiple Stimulus Comparison Rating
- Adapted sensory evaluation methodologies (attribute testing)
- Ideal Profile Method (IPM)
- Annoyance and suitability test
Available standard solutions of SenseLabOnlineTM
The application is available in different versions depending on your needs.
Technical specifications for SenseLabOnline
Sound player - pushing the limits for online testing
The sound player used by SenseLabOnline has been developed exclusively for SenseLabOnline to meet the high performance criteria specified in the international standards for audio evaluation testing.
As well as meeting high performance criteria the sound player runs exclusively via your web browser, meaning that no additional programs need to be installed in order to build or run tests.
A dedicated Audio/Video player is also available in an advanced version that ensures full control of hardware.
System requirements for applying SenseLabOnline
In order to apply SenseLabOnlie, you need:
- Mac OS X: Safari (latest version)
- Windows 32/64 bit (7 and 10): Chrome (latest version)
- Recommended minimum screen resolution 1280x800
- Minimum 2 GB ram
Sound player specifications
- Supported format: WAV
- Supported sample rates: 8 – 96 kHz
- Resolution: 16 bit (32 bit in Standalone version)
- Channels: Mono or stereo (n channels in Standalone version)
- Maximum file length: 45 s
- Sounds per screen/trial: unlimited (scroll bar appear)
Automatic statistical analysis
SenseLabOnline has implemented automatic statistical analysis procedures. Any time during a test, you can get an instant and full statistical analysis, and see preliminary results.
The automatic routines check data quality and basic assumptions before proceeding to plotting of the results.
Basic analysis methods like 2-way Analysis of Variance (ANOVA), showing mean values with confidence intervals, plotting of interaction between experimental variables (etc.) are always included.
For more advanced test types e.g. tests with multiple test questions/attributes, you will get a complete overview of the results using multivariate data analysis methods, such as Principal Component Analysis (PCA), and Hierarchical Multiple Factorial Analysis (HMFA).
Current available statistical modules include:
- Analysis of Variance (ANOVA)
- TUKEY HSD
- Mean scores with confidence intervals
- Interaction plots
- Assessor feedback
- Assessor performance (eGauge)
- Hierarchical multiple factorial analysis (HMFA)
- Multi Dimensional Scaling (MDS)
- Factorial Analysis on Distance Tables (FADT)
- Check-All-That-Apply (CATA) analysis
- Density plots
- Spider/radar plots.
You will receive the results as jpg files, and have access to raw data file for all your experiments.
Contact us for further information about SenseLabOnline or visit our site about acoustics, noise and sound quality.