| 3D Sound localization |
| |
| Definition of Sound Source Localization |
Determine the location of sound sources using the measurements of the acoustic signals by a set of acoustic sensors
|
| Research Objectives |
Build a practical sound source localization system for human-machine interface of mobile platform such as robots, surveillance camera, teleconference system
|
| New Explicit Adaptive Time Delay Estimation Algorithm |
- Usual gradient search method does NOT work well for the delta function-like objective functions
- New Optimization Method using Haar Integral Transform
- Noise attenuation
- Gradient amplifies noise
- Integral attenuates noise
- Long searching range
- Gradient is point-information
- Integral has wide-range-information
|
| Using Steerable Microphones |
- Microphone sensors can rotate using motorized rotational base
<Advantages>
- Precise estimation with small number of sensors
- Improved sensitivity
< Disadvantages>
- Overall cost increase
- Noise and vibration due to motors
|
Home > Research > Research Areas 
