Sound Signal Indicator
From Ece
Contents |
Proposal (First Draft)
Objective
Our objective is to develop a Sound Signal Indicator (SSI) system using the SPARTAN-3 development board along with microphone and keyboard as input devices and, monitor and LED’s for displaying the output
Team Name & Members
Team SSI is:
- Avinash Yerramreddy
- Devi Koneru
- Mukhesh Elaprolu
- Phani Karnati
Introduction & Concept
The Spartan-3 board will run a program that could drive the output devices (LED’s and FPGA Monitor) based on the input signal fed by the microphone. The basic operation of the SSI system is to display the received sound signal according to the preset threshold sound levels. The received sound signal is graphically represented in terms of bands and is displayed using a monitor. In addition to the graphical representation, the output signal received is also displayed using LED’s present on the Spartan-3 board.
Basic Block Diagram
Figure 1 - Basic Block Diagram of SSI System (first draft).
Required Parts
- Spartan-3 Development Board
- Microphone
- Adaptor (9v)
- IC 7805 (Voltage Regulator – 5v)
- µA 741 (Voltage Comparator)
- VGA Monitor
- Keyboard
Proposed Work
- A module containing the logic to turn on/off the microphone based on the input from the keyboard has to be developed.
- A module to select the display of the output between LED’s/monitor based on the input from the keyboard has to be developed.
- A module to increase the number of LED’s that glow as the sound intensity increases has to be developed.
- A module to display the level of sound intensity as a vertical bar on the monitor should be developed such that the height of the bar increases as with the sound intensity;
Expected Deliverables
Using the above equipment a sound signal indicator is developed which allows us to visually confirm the intensity of sound that is produced. Also, a mechanism to switch on/off the circuit and change the output display between LED/monitor is achieved by programming the Spartan-3 board.
