Information extraction technology to be able to measure, store, collect all kinds of information,... more Information extraction technology to be able to measure, store, collect all kinds of information, especially the direct access to important information, which is based on mobile applications and more convenient for the information gathering process, user and information feedback, greatly reduce the cost of information technology, makes the implementation of large-scale information extraction technology possible. As for this paper, first of all, mainly introduces the basic theory of music rhythm customization mobile application; Secondly, the development and implementation of this application are introduced; Finally, it summarizes and anticipates the future development trend of music rhythm customization technology. After implementation, users only need to import music or video that they want to modify, select the corresponding style or double speed, and then get relevant audio results through system software processing. And make music rhythm customization easy to operate, which remo...
This work develops a toolbox called WDSchain on MATLAB that can simulate blockchain on water dist... more This work develops a toolbox called WDSchain on MATLAB that can simulate blockchain on water distribution systems (WDS). WDSchain can import data from Excel and EPANET water modelling software. It extends the EPANET to enable simulation blockchain of the hydraulic data at any intended nodes. Using WDSchain will strengthen network automation and the security in WDS. WDSchain can process time-series data with two simulation modes: (1) static blockchain, which takes a snapshot of one-time interval data of all nodes in WDS as input and output into chained blocks at a time, and (2) dynamic blockchain, which takes all simulated time-series data of all the nodes as input and establishes chained blocks at the simulated time. Five consensus mechanisms are developed in WDSchain to provide data at different security levels using PoW, PoT, PoV, PoA, and PoAuth. Five different sizes of WDS are simulated in WDSchain for performance evaluation. The results show that a trade-off is needed between t...
2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA)
With the progress and development of science and technology, the sound is applied in different fi... more With the progress and development of science and technology, the sound is applied in different fields. However, people will inevitably encounter the sound delay due to different factors while they are researching on the sound triggered by the event, which has influence on the expected effect to some extent.so It is an imminent thing to propose a reasonable test of sound to delay and analyze the factors causing the sound delay to optimize it. Based on Web Audio, this paper aims to propose a reasonable and effective test method by analyzing the delay generated by audio on different platforms, so as to realize the purpose of automatically testing the sound delay by setting the fixed length. The experimental results show that the delay analyzed by the external stress test is different from that analyzed by the internal stress test under different browsers and different operating systems.
The Flexilink protocol has been proposed to support audio-visual communication across the Interne... more The Flexilink protocol has been proposed to support audio-visual communication across the Internet. The protocol aims to support low latency to reduce communication jitter and support different sampling frequencies. This paper discusses real-time Ethernet protocols and presents a simulation model developed to evaluate the Flexilink protocol using the OMNeT++ simulation platform to simulate the behaviour of the Flexilink protocol over Ethernet networks. Simulation-based evaluation strategy enables the protocol to be evaluated by considering the effects of different parameters and different topologies, which would have been both time-consuming and costly if done using real hardware.
Using commodity computers in conjunction with live music digital audio workstations (DAW) has bec... more Using commodity computers in conjunction with live music digital audio workstations (DAW) has become increasingly more popular in recent years. The latency of these DAW audio processing chains for some application such as live audio monitoring has always been perceived as a problem when DSP audio effects are needed. With "High Definition Audio" being standardised as the onboard soundcard's hardware architecture for personal computers, and with advances in audio APIs, the low latency and multi-channel capability has made its way into home studios. This paper will discuss the results of latency measurements of current popular operating systems andhosts applications with different audio APIs and audio processing loads.
For live digital audio systems with high-resolution multichannel functionalities, it is desirable... more For live digital audio systems with high-resolution multichannel functionalities, it is desirable to have accurate latency control and estimation over all the stages of digital audio processing chain. The evaluation system we designed supports 12 channel, 24 bits Sigma Delta based ADC/DAC, incorporating both a programmable FPGA and a Digital Signal Processor. It can be used for testing and evaluation of different ADC/DAC digital filter architectures, audio sample buffer subsystem design, interrupt and scheduling, high level audio processing algorithm and other system factors, which might cause the latency effects. It also can estimate the synchronization and delay of multiple channels.
We present the results of a comparison of different decimation architectures for high resolution ... more We present the results of a comparison of different decimation architectures for high resolution sigma delta analogue to digital conversion in terms of passband, transition band performance, simulated signal to noise ratio, and computational cost. In particular, we focus on the comparison of time domain group delay response of different filter architectures including classic multistage FIR, cascaded integrator-comb (CIC) with FIR compensation filters, particularly multistage polyphase IIR filter, cascaded halfband minimum phase FIR filter, and multistage minimum phase FIR filter designs. The analysis shows that the multistage minimum phase FIR filter and multistage polyphase IIR filter are most promising for low group delay audio applications.
Information extraction technology to be able to measure, store, collect all kinds of information,... more Information extraction technology to be able to measure, store, collect all kinds of information, especially the direct access to important information, which is based on mobile applications and more convenient for the information gathering process, user and information feedback, greatly reduce the cost of information technology, makes the implementation of large-scale information extraction technology possible. As for this paper, first of all, mainly introduces the basic theory of music rhythm customization mobile application; Secondly, the development and implementation of this application are introduced; Finally, it summarizes and anticipates the future development trend of music rhythm customization technology. After implementation, users only need to import music or video that they want to modify, select the corresponding style or double speed, and then get relevant audio results through system software processing. And make music rhythm customization easy to operate, which remo...
This work develops a toolbox called WDSchain on MATLAB that can simulate blockchain on water dist... more This work develops a toolbox called WDSchain on MATLAB that can simulate blockchain on water distribution systems (WDS). WDSchain can import data from Excel and EPANET water modelling software. It extends the EPANET to enable simulation blockchain of the hydraulic data at any intended nodes. Using WDSchain will strengthen network automation and the security in WDS. WDSchain can process time-series data with two simulation modes: (1) static blockchain, which takes a snapshot of one-time interval data of all nodes in WDS as input and output into chained blocks at a time, and (2) dynamic blockchain, which takes all simulated time-series data of all the nodes as input and establishes chained blocks at the simulated time. Five consensus mechanisms are developed in WDSchain to provide data at different security levels using PoW, PoT, PoV, PoA, and PoAuth. Five different sizes of WDS are simulated in WDSchain for performance evaluation. The results show that a trade-off is needed between t...
2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA)
With the progress and development of science and technology, the sound is applied in different fi... more With the progress and development of science and technology, the sound is applied in different fields. However, people will inevitably encounter the sound delay due to different factors while they are researching on the sound triggered by the event, which has influence on the expected effect to some extent.so It is an imminent thing to propose a reasonable test of sound to delay and analyze the factors causing the sound delay to optimize it. Based on Web Audio, this paper aims to propose a reasonable and effective test method by analyzing the delay generated by audio on different platforms, so as to realize the purpose of automatically testing the sound delay by setting the fixed length. The experimental results show that the delay analyzed by the external stress test is different from that analyzed by the internal stress test under different browsers and different operating systems.
The Flexilink protocol has been proposed to support audio-visual communication across the Interne... more The Flexilink protocol has been proposed to support audio-visual communication across the Internet. The protocol aims to support low latency to reduce communication jitter and support different sampling frequencies. This paper discusses real-time Ethernet protocols and presents a simulation model developed to evaluate the Flexilink protocol using the OMNeT++ simulation platform to simulate the behaviour of the Flexilink protocol over Ethernet networks. Simulation-based evaluation strategy enables the protocol to be evaluated by considering the effects of different parameters and different topologies, which would have been both time-consuming and costly if done using real hardware.
Using commodity computers in conjunction with live music digital audio workstations (DAW) has bec... more Using commodity computers in conjunction with live music digital audio workstations (DAW) has become increasingly more popular in recent years. The latency of these DAW audio processing chains for some application such as live audio monitoring has always been perceived as a problem when DSP audio effects are needed. With "High Definition Audio" being standardised as the onboard soundcard's hardware architecture for personal computers, and with advances in audio APIs, the low latency and multi-channel capability has made its way into home studios. This paper will discuss the results of latency measurements of current popular operating systems andhosts applications with different audio APIs and audio processing loads.
For live digital audio systems with high-resolution multichannel functionalities, it is desirable... more For live digital audio systems with high-resolution multichannel functionalities, it is desirable to have accurate latency control and estimation over all the stages of digital audio processing chain. The evaluation system we designed supports 12 channel, 24 bits Sigma Delta based ADC/DAC, incorporating both a programmable FPGA and a Digital Signal Processor. It can be used for testing and evaluation of different ADC/DAC digital filter architectures, audio sample buffer subsystem design, interrupt and scheduling, high level audio processing algorithm and other system factors, which might cause the latency effects. It also can estimate the synchronization and delay of multiple channels.
We present the results of a comparison of different decimation architectures for high resolution ... more We present the results of a comparison of different decimation architectures for high resolution sigma delta analogue to digital conversion in terms of passband, transition band performance, simulated signal to noise ratio, and computational cost. In particular, we focus on the comparison of time domain group delay response of different filter architectures including classic multistage FIR, cascaded integrator-comb (CIC) with FIR compensation filters, particularly multistage polyphase IIR filter, cascaded halfband minimum phase FIR filter, and multistage minimum phase FIR filter designs. The analysis shows that the multistage minimum phase FIR filter and multistage polyphase IIR filter are most promising for low group delay audio applications.
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