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  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>R. Hamed. M. Aly);</journal-title>
      </journal-title-group>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>An Intelligent Optimization Technique Of Automatic Speech Recognition For Smart Homes</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Rabab Hamed M. Aly</string-name>
          <email>rabab.cse2010@gmail.com</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Aziza I. Hussein</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Computer Science Department, Faculty of Computer Science, Nahda University</institution>
          ,
          <addr-line>Beni Suef</addr-line>
          ,
          <country country="EG">Egypt</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Electrical and Computer Engineering Department, College of Engineering Effat University</institution>
          ,
          <addr-line>Jeddah</addr-line>
          ,
          <country country="SA">Saudi Arabia</country>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution>The Higher Institute for Management and Information Technology</institution>
          ,
          <addr-line>Minya</addr-line>
          ,
          <country country="EG">Egypt</country>
        </aff>
      </contrib-group>
      <pub-date>
        <year>2078</year>
      </pub-date>
      <volume>000</volume>
      <fpage>0</fpage>
      <lpage>0001</lpage>
      <abstract>
        <p>The creation of new approaches to the design and configuration of smart buildings relies heavily on AI tools and Machine Learning (ML) algorithms, particularly optimization techniques. The widespread use of electronic devices has sparked a strong desire to incorporate the Internet of Things (IoT) into houses, leading to the development of smart homes. As networked gadgets proliferate rapidly, this phenomenon is characterized by rapid proliferation. In smart buildings, smart cities, smart grids, and smart homes, interconnected electronic devices are becoming more popular. The objective of this paper is to enhance the functionality of home automation systems through the performance of speech recognition using the Bat-Salp Swarm Optimization (BSSO). This paper investigates the notion of (BSSO), a data analysis methodology that facilitates the automated construction of analytical models. The implementation of BSSO provides an enhancement to the feature selection process in speech recognition, providing an approximation solution that improves the accuracy of system decisions. The use of the BSSO technique improves the precision of the voice recognition system and also incorporates an Artificial Neural Network (ANN) for the classification part. The findings substantiated the efficacy of the employed methodology.</p>
      </abstract>
      <kwd-group>
        <kwd>Speech recognition</kwd>
        <kwd>Smart homes</kwd>
        <kwd>Salp Optimization Algorithm</kwd>
        <kwd>and Bat Optimization Algorithm</kwd>
        <kwd>1</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <p>Modern home automation technology is moving us towards the perfect smart home setup.
Artificial intelligence (AI) and deep learning are effective in the IoT. In addition, search
algorithms rely on metaheuristics, which are essential optimization methods, to solve complex
AI problems. Speech recognition and control, data input, voice user interface, and telephone
operator automation are the applications. Metaheuristic approaches can mimic physical,
biological, or natural principles that exhibit search or optimization traits and predictability
[15]. Smart buildings, cities, grids, and homes are just a few examples of numerous environments
where networked devices are becoming increasingly common. Smart buildings, towns,
electricity systems, and residences are using more networked electronics. This paper introduces
Bat-Salp Swarm Optimization (BSSO), a data analysis method that automatically creates
∗ Corresponding author.
† These authors contributed equally.
analytical models. BSSO uses approximation to improve voice recognition feature selection and
system decisions. Moreover, the application of the BSSO technique improves the precision of
the voice recognition system. The findings substantiated the efficacy of the employed
methodologies. The rest of our paper is organized as follows: Section. 2 gives a brief description
of related studies. Section.3 illustrates the proposed model. Section.4 shows the experimental
results. Finally, Section.5 is the conclusion.</p>
    </sec>
    <sec id="sec-2">
      <title>2. LITERATURE REVIEW</title>
      <p>
        Numerous metaheuristic strategies in various applications have been introduced by authors
recently. Cross-lingual Voice Conversion is the process of modifying the speaker identification
of a voice sample from one speaker to another speaker who speaks a different language from
the source speaker. Converters are frequently employed in the provision of a converters, and
they displayed the fully integrated power with simulation in different cases. Various
methodologies have been devised for voice recognition; however, attaining a high level of
precision continues to pose a substantial obstacle [
        <xref ref-type="bibr" rid="ref6 ref7">6,7</xref>
        ]. In [
        <xref ref-type="bibr" rid="ref8">8</xref>
        ], the authors developed a novel
deep learning model for voice identification named the Taylor Gradient Descent Political
Optimizer (Taylor GDPO). The model that was built exhibited outstanding efficacy, achieving
an impressive accuracy rate of 96.93%. In [
        <xref ref-type="bibr" rid="ref9">9</xref>
        ], the authors introduced the Kawahara filter as an
optimizer for accurately categorizing employees and predicting their performance. In addition,
in [
        <xref ref-type="bibr" rid="ref10">10</xref>
        ], the authors developed a new method to enhance the accuracy of a certain Automatic
Speech Recognition (ASR) engine by automatically adjusting the front-end speech
augmentation. The suggested technique allowed users to use Automatic Speech Recognition
(ASR) on consumer electronics devices with less difficulty, even when there are changes in the
surrounding noise levels. A genetic algorithm (GA) was utilised to determine parameter values
for the front-end speech enhancement customised for specific environments. The generated
values can be allocated in a dynamic manner to input speech signals by first clustering the
surroundings based on noise characteristics. The evaluations showed that our technique
surpassed the parameter values determined by a human expert. The authors presented a new
algorithm for machine learning in [
        <xref ref-type="bibr" rid="ref11">11</xref>
        ]. Initially, Mel-frequency cepstral coefficients were
utilised to extract the features from the voice signal datasets. An innovative method was
proposed that combines the grey wolf optimizer and the Naïve Bayes machine learning
algorithm for the purpose of categorization. According to the results, their proposed
classification algorithm shows superior performance compared to existing machine learning
approaches. In recent decades, the home automation system has gained considerable popularity,
leading to increased comfort and improved quality of life.
      </p>
      <p>
        Several authors, including [
        <xref ref-type="bibr" rid="ref12">12</xref>
        ], conducted a comprehensive analysis of contemporary and
emerging home automation systems. A mobile application is utilised to oversee and control
household appliances through the implementation of various communication tactics. Several
research efforts, including [
        <xref ref-type="bibr" rid="ref12 ref13">12,13</xref>
        ], have examined the operational processes of several wireless
communication technologies, such as ZigBee, Wi-Fi, Bluetooth, and GSM. Furthermore, this
paper examines several home automation systems, providing a thorough analysis of their
benefits and limitations. Furthermore, this paper examines several home automation systems,
providing a thorough analysis of their benefits and limitations. The Bat Algorithm is based on
the echolocation abilities of microbats. Echolocation is a form of sonar used by microbats to
locate prey and identify obstacles or threats in total darkness. Bat algorithms are utilized in
diverse fields [14-16]. In [14], the authors implemented a load shifting technique to effectively
decrease the total electricity cost. In order to accomplish this objective, they proposed merging
the bat algorithm (BA) and crow search algorithm (CSA) to create a hybrid system known as
the bat-crow search algorithm (BCSA). An innovative algorithm for reducing the Peak to
Average Ratio in Single-Phase H-Bridge Multilevel Inverters is described in [15-18]. Following
this description of related works, we will get into the approach and models that are based on
some of the related work that has come before.
      </p>
    </sec>
    <sec id="sec-3">
      <title>3. METHODOLOGY</title>
      <p>The paper's structure contains three main elements (see Figure 1). The preprocessing stage is
followed by the feature selection stage, which combines two primary optimisation techniques:
Bat optimisation and Salp Swarm optimisation approach (BSSO). The last part is the
classification stage, which utilises an Artificial Neural Network (ANN). The subsequent analysis
will focus on the main discussion of each stage illustrated in the block.</p>
      <sec id="sec-3-1">
        <title>3.1. Preprocessing:</title>
        <p>The first block pre-processes. The Discrete Wavelet Transform (DWT) converted the signal
from time to frequency after having filtered it. The Discrete Wavelet Transform (DWT) at its
maximal decomposition level produces a signal with precise frequency resolution [20]. The
MATLAB digital signal processing program is used to apply three stages of Discrete Wavelet
Transform (DWT). The DWT divides signals into approximation and detailed sub bands. Most
noise affects the high-frequency sub band, while vital information is in the low-frequency sub
band. This level uses Daubechies wavelet [20-21].</p>
      </sec>
      <sec id="sec-3-2">
        <title>3.2. Feature selection</title>
        <p>The major feature section approach is bat optimisation. The Bat Algorithm (BA) mimics bat
hunting. BAs operate on this idea. The bats in the swarm are thought to travel randomly at a
certain velocity  and position  .</p>
        <p>
          They search for prey using a steady frequency  , variable wavelength  , and a specific
loudness  0. By manipulating pulse wavelength and emission rate  ∈ [
          <xref ref-type="bibr" rid="ref1">0, 1</xref>
          ], they may
determine their proximity to the target. Loudness can range from a high positive number  0 to
a constant minimum value  min. Frequency  falls within [ min,  max], similar to wavelength
range [ min,  max] [22]. The algorithm's implementation focuses on three illustrated
principles:
        </p>
        <p>1) Bats employ echolocation to perceive distance and possess the ability to differentiate
between prey and obstacles.</p>
        <p>2) To search for prey, bats fly randomly with the velocity vi at position xi with varying
frequencies fi (from a minimum frequency to a maximum frequency) or with varying
wavelengths and loudness’s A0. Automatically adjusting wavelength (or frequency) and rate r
of pulse emission can also be accomplished depending on target proximity.</p>
        <p>3) In the third step, assume that the loudness varies from the largest positive value A0 to
the minimum constant value Amin. As a result of the above rules, the position vector of the bat
represents a solution in the search space. The algorithm randomly initializes the bats since the
global optimal position vector is not known a priori [23].</p>
        <p>The bat optimization techniques will apply based on the following equation:</p>
        <p>
          Where i th bat, i = 1, 2,3,. . . , n; j = 1, 2,3,. . . , d; n signifies the population size, d signifies
the dimension of the search space. xlb and xub are lower, upper bounds for j th dimension, rand
is a random number between [
          <xref ref-type="bibr" rid="ref1">0,1</xref>
          ], and β is a random number between [
          <xref ref-type="bibr" rid="ref1">0, 1</xref>
          ]. x∗ signifies the
current global best solution, and the bat updates the velocity, position according to the change
of frequency f , ε ∈ [
          <xref ref-type="bibr" rid="ref1">−1, 1</xref>
          ], wmax and wmin respectively represent the maximum and minimum
weight, t represents the current number of iterations, and N_gen characterizes the maximum
number of iterations i, At correspond to the average loudness in current iteration and Loudness
Ai which is a vector of values for all bats and also Rate ri of pulse emission which is a vector for
all bats controlling the diversification of bat algorithm [22].
        </p>
        <p>However, the SSO is a bio-inspired algorithm that mimics Salp's natural foraging movements.
By mimicking Salps' hunting and foraging techniques, the SSO hopes to efficiently handle
complex optimization problems [15,23]. Equation (4) is revised in this study using the SSO
hunting equation (9). Keep in mind that the value of the variable c1 changes over time according
to equation (8), where L is the maximum number of iterations and l is the current iteration
value. The BBSO approach, a novel approach for feature selection in acoustic signal analysis,
and the bat optimization algorithm are both greatly improved by this version.</p>
        <p>In addition, in the classification phase, we employ hybrid learning utilizing the ANN algorithm,
which combines the descent and least-squares methods to determine the parameters [24].
The proposed technique aims to enhance the hardware of the system on a chip by
optimising its performance to achieve maximum efficiency. This solution will involve
implementing a smart design in the future.</p>
        <p>1 = 2 −(4 )2</p>
        <p>=  1 × 
(   +    −1)</p>
        <p>(8)
(9)
In the following the main algorithm of this paper as follows:</p>
        <p>Part 1 : preprocessing an Feature extraction part
Start Loop
1) Preprocessing of audio signal.
2) define objective function f(x), x = (x1, . . . , xd ) T, and Set the initial value of population size n, α, γ, and</p>
        <p>N.gen
3) Initialize pulse rates ri and loudness Ai and population based on (1)
4) Evaluate and find x∗ where x∗ ∈ {1, 2, . . . , n}
while t ≤ N_gen</p>
        <p>for i = 1 to n
5) Adjust frequency (Equation (2))
If i≥2
6) Calculate (8) based on current iteration.
7) Select a solution among the best solutions (best feature of audio signal.</p>
        <p>8) Generate a local solution around selected best (5).
end if
9) Evaluate objective function
if (rand &lt; Ai &amp; f(xi ) )</p>
        <p>update    based on (9)
end if
end for
t = t + 1
.end while
Return best selected features
Part 2: Classification stage :
10) Rank the bats and find the current best x∗
- To Train ANN
Start Loop
1) Select type of optimization (Hybrid)
2) Choose the number of epochs.
3) Compute the error
Err= (actual value-Estimated value)/ (actual value)*100% %% using for estimation of prediction
End Loop
Display control signal</p>
      </sec>
    </sec>
    <sec id="sec-4">
      <title>4. RESULTS AND DISCUSSIONS:</title>
      <p>Our main goal is to accurately identify audio signal qualities for automation systems. The goal
is to master and use BSSO. The system extracted features from the audio signal and used those
elements to provide instructions. However, adding an ANN signal categorization component
enhanced the system. Both the feature extraction and classification methods had over 94%
accuracy. The BSSO feature extraction method [24] employed 100–500 iterations (Figure 2). The
model is being conducted using a Windows 11 personal computer with a 2.5GHz Core i7 CPU,
16GB of RAM, and MATLAB 2023a software. The cumulative duration for the system to
complete all assignments is three minutes. Table 1 illustrates the enhancement in the system's
accuracy achieved by the Salp algorithm compared to the BAT techniques and the other
techniques based on the same data of this paper from audio signals.</p>
      <p>Every signal the smart home sensor unit emits is classified to manage equipment.
Categorization uses ANN to classify. Figure 3 shows the ANN classification method and results.
Figure 4 displays the classification model managed the smart system utilising audio signals with
98% accuracy and an error histogram. This model classifies audio files using ANN and feature
extraction. On audio samples from various sensors, the approach works well.
The algorithm is characterised by its high speed and ability to extract practical values for feature
extraction. Additionally, it enhances the model of speech values. Furthermore, the model has
shortcomings in terms of the time required for data collection, particularly for historical data
collection.</p>
    </sec>
    <sec id="sec-5">
      <title>5. CONCLUSION</title>
      <p>AI technologies and Machine Learning (ML) algorithms, specifically optimization techniques,
are crucial for developing innovative methods for designing and configuring smart buildings.
The Digital device use has increased interest in connecting the Internet of Things (IoT) into
houses, creating smart homes. Networked devices are becoming more prevalent in many
situations such as smart buildings, cities, grids, and homes. There has been a rise in interest in
the concept of constructing smart homes by IoT into homes because of the use of digital devices.
It involves the fast spread of connected devices. Connected gadgets are becoming more common
in smart buildings, towns, grids, and families. Bat Salp Swarm Optimization is used to integrate
voice recognition with home automation systems to improve performance. This paper
examines (BSSO), a data analysis method that generates analytical models automatically.
Decisions made by voice recognition systems are enhanced by BSSO's feature selection
approximation solution. The BSSO method enhances voice recognition accuracy and adds the
ANN for classification. The findings supported the methods. The method is distinguished by
its rapidity and capacity to get useful values for feature extraction. Furthermore, it improves
the framework of speech values. Moreover, the model has deficiencies in terms of the duration
needed for data collection, especially for the acquisition of historical data.</p>
    </sec>
    <sec id="sec-6">
      <title>6. Declaration on Generative AI</title>
      <p>During the preparation of this work, the author(s) used QuillBot program and wordtune for
rephrasing and improving clarity of certain paragraphs, as well as Grammarly for grammar and
spelling checks. All content generated or suggested by these tools was critically reviewed and
edited by the authors. The author(s) affirm full responsibility for the accuracy, originality, and
integrity of the final manuscript.
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