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Sensors and Materials
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Sensors and Materials, Volume 31, Number 11(1) (2019)
Copyright(C) MYU K.K.
pp. 3451-3463
S&M2023 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2019.2481
Published: November 8, 2019

Dual-input Control Interface for Deep Neural Network Based on Image/Speech Recognition [PDF]

Neng-Sheng Pai, Yi-Hsun Chen, Chin-Pao Hung, Pi-Yun Chen, Ying-Che Kuo, and Jun-Yu Chen

(Received May 24, 2019; Accepted October 8, 2019)

Keywords: Adaboost, convolutional neural network, Mel-frequency cepstral parameters, long short-term memory neural network

The objective of this study was to design a control interface for dual-input video/audio recognition consisting of two input interface systems, hand posture and speech recognition, with the use of specific hand postures or voice commands for control without the need for wearable devices. Original video camera images were preprocessed for hand posture recognition, and the face in the image was used as the reference point and identified using the Adaboost classifier. An image of a specific size was selected as the recognition input image to increase the recognition speed. A neural network comprising convolutional, activation, max pooling, and fully connected layers was used to classify and recognize hand posture images as well as speech. Long short-term memory (LSTM) in a recurrent neural network (RNN) was used to achieve speech recognition. Speech features were extracted by preprocessing, and Mel-frequency cepstral coefficients (MFCCs) and a fast Fourier transform (FFT) were then used to convert the signals from the time domain to the frequency domain. The frequency domain signals subsequently underwent a discrete cosine transform through triangular bandpass filters to derive MFCCs as the speech eigenvalue input. The speech feature parameters were then input to the LSTM neural network to make predictions and achieve speech recognition. Experimental results showed the image/speech dual-input control interface had good sound recognition capability, supporting the findings of this study.

Corresponding author: Neng-Sheng Pai


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Cite this article
Neng-Sheng Pai, Yi-Hsun Chen, Chin-Pao Hung, Pi-Yun Chen, Ying-Che Kuo, and Jun-Yu Chen, Dual-input Control Interface for Deep Neural Network Based on Image/Speech Recognition, Sens. Mater., Vol. 31, No. 11, 2019, p. 3451-3463.



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