8/15/2019 Baby Alarm Proposal

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Baby Alarm 

Problem Statement: Now a days it has become a tough task for the parents to keep the track of babies when they are

 busy. Hence there is a necessity for the technology to meet this need.

The main goal of this project is to design an application as a true replacement for hardware baby monitoring systems.

Proposed Solution:In this project, the baby monitoring system is implemented by designing a baby alarm

application that is triggered when the baby’s sleep is disturbed.

Algorithm:

 

The signal is divided into consecutive overlapping segments of certain length.

 

For each segment VAD is applied and activity is calculated. If the voice activity of a given

segment is below the pre-defined threshold, the section is considered as no cry.

  If the activity is above the threshold, the section is further divided into short time frames

 

The following parameters are computed for each frame: The MFC coefficients, the pitch

frequency, harmonicity factor (HF), Harmonic-to-average power ratio (HAPR)  

Each frame is classified either as ’cry’ or as ’no cry’, based on its MFCC using k-NN classifier.

For each segment, if at least half of the frames are classi fied as ’cry’, the whole segment is

considered as ’cry’. Otherwise, it is considered as ’no cry’.  

When ‘cry’ is detected in a segment an alarm is triggered and the parent is intimated.  

A few pre-recorded sounds are assigned for different keys in the number pad in such a way

that the parent can play the required sound to ease the baby. 

8/15/2019 Baby Alarm Proposal

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