SSI System
From Ece
Contents |
Proposal Phase 1 (Updated for Phase 2)
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
- Condenser Microphone
- Data Sheet
- Quantity Required: 1
- µA 741 (Op-amp used as Voltage Comparator)
- Data Sheet
- Unit Price: Freely available from lab
- Quantity Required: 4
- VGA Monitor
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.
Phase 3 (Included Modules Section)
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.
Required Parts
- Spartan-3 Development Board
- Condenser Microphone
- Data Sheet
- Quantity Required: 1
- µA 741 (Op-amp used as Voltage Comparator)
- Data Sheet
- Unit Price: Freely available from lab
- Quantity Required: 4
- VGA Monitor
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.
Modules
Figure 2 - Modules used for SSI System
Phase 4
Analysis of proposed Work
Using the above menctioned equipment and design modules, a sound signal indicator system 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.
Project Changes
Though we were able to feed sound signal as input using microphone, since the signal strength and its output calibration being non-appreciating we will be giving the sound signal input using some other sound sources such as an Ipod or laptop etc.
Project Snapshots
Figure 3 - Snapshot for SSI System
Figure 4 - Snapshot for SSI System
Output
The output for the SSI System is displayed using FPGA monitor and LED's present on the Spartan-3 board. As the signal strength increases the LED's glow in an ascending order fashion and at the same time the monitor display indicates the change in the signal strength by rising and falling bands. The control module takes care of dynamically changing the input being fed to the draw_vga module. The control module also controls the LED's present on the spartan-3 board. By properly designing draw_vga module the FPGA monitor is driven to diplsy the output with respect to the sound signal strength fed as input.
