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The source code is the complete project created by the version of Visual Studio The quality of our music is pretty good. Distortion daasheet Lower Pitch. Initially both of the signals are in analog format, so we needed two analog-to-digital converters to transform the analog signal into digital format before feeding into the microcontroller.

Clarification on Digital to analog conversion

A high frequency sine wave signal is added to the voice signal. Besides, we use the RS serial port to communicate between the microcontroller and the PC. The audio signal will be shown on dac80 wave display panel, and the panel is updated by a software timer every 1 second.

Look at the DAC data sheet and the example circuit in figure 1. R Attached Image s.

The sampling frequency is controlled by the timer interrupt of the microcontroller. The Java application consists of various buttons to allow users to control the intelligent multimedia system. In our multimedia system, we implemented a Graphical Datasjeet Interface written in Java running on the PC to control the whole embedded system.


Datashet system allows users to use the microphone as the analog input to speak and sing. Do ensure that the two Raw power supplies outputs are isolated. The Java application sends the command to the console program via the standard output pipe and receives back the down-sampled real-time audio data via the standard input pipe. The use of ports is shown in Figure 4.

Our program used the internal Analog-to-Digital Converter of ATMega32 microcontroller to obtain the xac808 signal from a microphone via an Op-Amp circuit to amplify the signal strength. Voice output consists of additive white Gaussian noise. The above web links may subject to change anytime later.

ECE Final Project

It is the official site of JAVA that provides very clear documentation. If the object has been acquired by another thread, it waits until the object is released form another thread. We used this chip because it can make the output more accurate than the approach that we used in Lab 2.

Otherwise the whole circuit is same.

In a pinch you can use a MAX to get about V. I will try that out and will revert back. At this point, we assume the PC is running our application only, so that the one second sleep is enough for this case.

Therefore, we chose as the upper bound and as the lower bound of the vatasheet. Our program configures the serial port to run at a baud rate of bps. The stop bit is one.

The console program consists of two threads such as a main thread and a background thread. The Op-Amp circuit has a 2. In the function setSampleFrequencythe payload of the command packet indicates the sampling frequency chosen by the user through the GUI in the PC. Another thing I just noticed on your schematic. In this project, we use the pre-amplifier circuit of the previous project” Sound Effect Processor “.


The Robot distortion option is done by adding a sine wave signal to the voice signals from the result of our tests. There is no safety consideration regarding to this design project; the only thing that users may caution about is the 5V and 10V power supply.

But in our tests, we found that the sample data of the voice signal was in fact This is to ensure that the audio doesn’t have a glitch when there is a command packet received from the PC. Whenever datasheer system receives a command packet from the PC which indicates to set the distortion effect with patient as datassheet option, the function setDistortion is invoked to handle the rest of the packet payload. The source code for the Java application is edited in the eclipse environment.

There were so some minor changes we made in the system architecture while we were working on this project.

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