Nov 17, the end of the data sheet. 2 Applications. • Operates With Any 8-Bit µP Processors or as a. Stand-Alone Device. • Interface to Temp Sensors. Category. Description, 8-bit Digital-to-analog Converters. Company, National Semiconductor Corporation. Datasheet, Download DAC datasheet. Cross ref. DAC Datasheet PDF Download – (DAC – DAC) 8-BIT DIGITAL-TO- ANALOG CONVERTERS, DAC data sheet.

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The parity bit is no parity. Finally, we think the quality of music could also be improved if we use better external ADC chip with higher conversion rate. The sampled audio signal is sent to the PC in the timer interrupt. The sampling rate of both voice and music is controlled by Timer0.

Unfortunately, this prevents the program to process the audio data from the microcontroller; and therefore the background thread was created. The first 2 bytes are for 16 bits command. Therefore, we referenced to their design and applied the circuit of pre-amplifier in our project.

All the stating claims or estimates are based on real data and correct; 4. It is the official site of JAVA that provides very clear documentation. However, he should modify the command line argument set in the eclipse project.


Positive common-mode range is always V a b 1.

Testing the Microphone and the PreAmplifier Circuit. The left panel is to display the waveform of the audio signal. We used an external digital-to-analog converter DAC to transform the digital signal back to analog format in order to drive the speaker to output the processed audio signal. Setting the upper threshold and lower threshold to the voice signal can filter the noise generated by the sine wave when there is no voice signal.

The mixed signal is the combination of the voice signal and the music signal. This section of code configures the port to be 8 bit data, no parity bit, one stop bit. In the multimedia system, we have designed some special effects for voice processing. Then, the thread down-samples the audio data and extract only 80 samples and sends the data to the GUI to display. For example, we could store the analog data in digital format to make it more robust and lasting. The dataflow between the microcontroller, the console program and the Java application.

The sampling frequency is controlled by the timer interrupt of the microcontroller. This is because the DC-offset is not exactly 2.

Datasheet DAC-1 PartList

However, daatasheet the limitation of hardware, we think that we have optimized our datzsheet performance for the best dayasheet, and we feel really satisfactory on our dad0801. Also, thanks to the emergence of the digital era, we have more tools that help us to achieve these goals. Therefore, we did not expect the quality can be as high as the CD players. Besides, we could generate the echo of our voice as if we are in a theatre. Voice output sounds like a robot voice.


However, since the wireless signal is not stable due to interference with other groups that we did not apply it eventually. We will run out of time. The console program is stored in the “ConsoleApplication. In the point of view of the multimedia industry, the application of audio processing is very important.

The voice output signal is generated by averaging 16 previous voice input signals. The mail operation in the Java application uses the Java Mail package. The console program consists of two threads such as a main thread and a background thread. I am sure that our project has the commercial value. The use of ports of microcontroller. He should run “startgui. The Java application is stored in the “gui.