Cart 0 Product Products (empty)
No products
To be determined Shipping
$0.00 Total
Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart. There is 1 item in your cart.
Total products
Total shipping To be determined
Total
New Reduced price! 
View larger
View larger 
ETSI TS 103 224
M00003763
New product
ETSI TS 103 224 Speech and multimedia Transmission Quality (STQ); A sound field reproduction method for terminal testing including a background noise database
standard by European Telecommunications Standards Institute, 08/01/2014
In stock
More info
Full Description
The quality of background noise transmission is an important factor, which significantly contributes to the perceivedoverall quality of speech. Terminals, networks, and system configurations including wideband, superwideband, andfullband speech services can be greatly improved with a proper design of terminals and systems in the presence ofbackground noise. ETSI TS 103 224: describes a sound field simulation technique allowing to simulate the real environment using realisticbackground noise scenarios for laboratory use; contains a database including relevant background noise samples for subjective and objective evaluation.The present document describes the recording technique used for the sound field simulation, the loudspeaker setup, andthe loudspeaker calibration and equalization procedures. Furthermore the document specifies the test room requirementsfor laboratory conditions.The simulation environment specified can be used for the evaluation and optimization of terminals and of complexconfigurations including terminals, networks and others. The main application areas are: outdoor, office, home and carenvironment.
The setup and database as described in the present document are applicable for: Objective performance evaluation of terminals in different (simulated) background noise environments. Speech processing evaluation by using the pre-processed speech signals in the presence of background noise,recorded by a terminal. Subjective evaluation of terminals by performing conversational tests, specific double talk tests, or talking andlistening tests in the presence of background noise. Subjective evaluation in third party listening tests by recording the speech samples of terminals in the presenceof background noise.