Figure 1
From: Measurement Combination for Acoustic Source Localization in a Room Environment
Source localization geometry is presented. The sampling frequency is 
, the speed of sound is 
, the source signal is colored noise, and SNR is 
. The sources are located at 
and 
or at TDOA values 
and 
. In panel (a), the propagation time from source at 
is different for the two microphones (values given in samples). This difference is the TDOA value of the source. Panel (b) illustrates how different TDOA values are mapped into hyperbolae. In panel (c), the two peaks at locations 
and 
in the TDE function correspond to the source locations 
and 
, respectively. Panel (d) displays the TDE function values from panel (c) mapped into a microphone pairwise spatial likelihood function (SLF).Propagation delay from source 1TDOA values and corresponding hyperbolaeTDE function values, 
Spatial likelihood function (SLF) for a microphone pair