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Questions tagged [localization]

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23 views

2D Sound Localization Using Microphones Array [on hold]

I'm using 3 microphones located at the vertices of an equilateral triangle. I findout the time delay between each microphone pair using GCC-PHAT. Now how I can calculate the angle of arrival or you ...
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1answer
69 views

Sound Source Location

I have four microphones which I want to use to locate the direction of an audio source. Is there any Python module that implements an algorithm that, given the recordings of the four microphones, will ...
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35 views

Localization TDoA and Bearing and range

My question concerns the main difference between localization when using the TDoA and Angle of Arrival (latter on Bearing). In the first case when using the TDoA, time-difference-of-arrival, 4 ...
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26 views

Basic Acoustic Tracking with Sensor Fusion for Automatic Gain Control

I'm trying to apply automatic gain control to an audio source emanating from two speakers by measuring the loudness of the signal in the presence of noise at multiple sensors. The sensors can move, ...
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35 views

Getting distance of sound source in near field and far field

Why is it difficult to get the distance of a sound source in far field than near field?
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1answer
29 views

What are the most robust implementations of passive/self-localization assuming high noise and reverberation?

I am doing research on a related subject that requires the use of TDOA estimation of two signals in an environment with a great deal of noise and reverberation. If anyone had any expertise on (or ...
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62 views

Subtracting audio signal emitted - trying to use spectral subtraction to localize moving objects

I am a Software Engineer without much signal processing background and currently spending and experimenting to get use to it. My scenario: Assume a speaker and a microphone array. A speaker emits an ...
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2answers
116 views

DOA - 1D Music Algorithm

I am currently working on a MUSIC algorithm for DOA of RF emitters in 3D. At the first stage, interested to apply the 1D MUSIC using a linear array of 4 antennas, and estimate only the azimuth of the ...
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69 views

Multilateration of Sound in 3D Space

TL:DR - How can you find the 3D coordinates of a emitter than transmits an impulse signal? STORY: I'm working on something to improve my bird-watching. I've got a camera that can take pictures of ...
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1answer
120 views

sound source localization - finding source vector

This may sound a stupid question - but I am working on some simple microphone array beamforming sound source localization stuff. I think I understand how to use beamforming to find the TOA of the ...
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1answer
56 views

Line based Extended Kalman Filter for localization : Measurement Jacobian

I have to estimate location w.r.t a given map of the environment. The state is expressed as $ X = \begin{bmatrix} x \\ y \\ \theta \end{bmatrix}$ Given , $ X_{t-1} = \begin{bmatrix} x_{t-1} \\ y_{...
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28 views

Can sound source localization techniques be used to separate superimposed sound sources?

I have a device with 2 fixed microphones (Zoom H4N recorder). I have a quiet thing I want to record and a noisy box in the background. Is there a filtering technique that I could apply that would ...
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1answer
583 views

Delay-and-sum beamforming: implementing steering in C

I am currently trying to understand how delay-and-sum beamforming works. I have found this website which explains the process of this technique very well in which the following C code is provided: <...
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1answer
175 views

Audio localization accuracy with two microphones

I am attempting to find the location of sound using two microphones, using cross-correlation methods. I am not getting very consistent and accurate results, there are instances where there seem to be ...
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2answers
325 views

Understanding the constraint on distance between microphones in microphone array for Direction of Arrival estimation

The distance between microphones in a two-microphone array for direction of arrival estimation, should be at least less than half of the wavelength of the signal that is being detected by the ...
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0answers
178 views

How to convert magnetometer readings into orientation?

I have a magnetometer sensor, obtaining the reading with $50$Hz rate. Unfortunately, the data is not labeled: I just know that these are $x$,$y$,$z$ axes, and that the reading are in $\mu$T (micro ...
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156 views

Speaker localisation using time difference of arrival

I am trying to implement a speaker positioning algorithm using time difference of arrival. My system is consisted of three microphones on a known location and a speaker which I need to locate using ...
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0answers
93 views

Object localization down to the pixel

I am somewhat confused on the terminology used in Computer Vision. Suppose I wanted to detect (localize) an object (say, a human) in an image. However, a box around the human is not sufficient, what I ...
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1answer
409 views

Cross-Correlation Signal Delay Estimation Variance

I am working on a project which intends to use Time Difference of Arrival (TDoA) for localization. Firstly, my understanding is that a matched filter is the most common method for estimating signal-...