Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 37 | Musicians' Essential Link for Optimized Digital Instrument Connection (MELODIC) |
Colin Devenney Macrae Wilson Ryan Libiano |
Koushik Udayachandran | design_document1.pdf design_document2.pdf final_paper1.pdf other1.pdf presentation1.pdf proposal1.pdf |
|
| # MELODIC Team Members: - Colin Devenney (colinfd2) - Ryan Libiano (libano2) - Macrae Wilson (macraew2) # Problem A common problem associated with live performing is the rats nest of audio and control cables required to run front of house equipment, digital effects, and instruments, to name a few. However, in recent times UHF, VHF and ISM systems have taken mainstay in the industry to overcome this problem. For a large performance, a $10,000+ rack dedicated to wireless audio systems make sense. For the performing musician on a budget, such as a small house band or a coffee shop artist, current budget products (<$300) suffer from problems such as data packet collisions, limited audio quality, and lack features such as frequency hopping and diversity. # Solution A wireless system designed to connect two audio devices (keyboard to speaker, guitar to amp) using two MELODICs. The idea is a pair of devices using Texas Instruments’ CC8530 RF SOC’s as the microcontroller/host for peripheral devices, such as the CC2590 range extender and the TLV320AIC3204 audio codec. The main components of the system include a power subsystem using a 9V battery, an audio system (codec, control), and digital RF (CC8530, range extender). We will create two identical devices which can be used interchangeably (as master or slave). # Solution Components ## Subsystem 1 - Power 9V battery with buck converter to account for 3.3V required for CC8530. Additionally, a linear regulator may need to be used to account for voltage rippling. ## Subsystem 2 - Audio This includes the audio codec chip TLV320AIC3204 and buttons for controlling the power and pairing. Additionally, the TLV320AIC3204 chip communicates with the CC8530 through an I2C bidirectional bus for control processing and I2S for audio processing. The CC8530 also includes software from Texas Instruments which allows for easy programming. The TLV320AIC3204 allows for Line-in and Line-out ports for use with musical and audio devices. These will be connected to ¼ inch TRS jacks so the device can act as either a master or a slave depending on the programmed firmware. ## Subsystem 3 - Digital RF RF processing is done through the CC8530 chip as well as the CC2590 range extender. These two chips will be coupled with a microstrip line, and associated circuitry for balancing and matching the antenna will be connected to an SMA port on the output of the CC2590 range extender. The CC8530 chip, which will manage all the peripherals over I2C and I2S digital communication protocols. The chip features a Cortex Arm-M3 Microcontroller and associated radio and audio co-processing hardware needed for the digital and analog RF front end. The chip also handles the clocking, framing and transmission of the wireless data packets as well as the clock, audio transmission and control for TLV320AIC3204 audio codec. Using Texas Instruments Configuration tool we can set the chip to autonomously run on its own, without need for control from an external master. # Criterion For Success -All buttons (for now, power and pairing) should work as intended. -System should allow for monitoring power levels in each device (LEDs). -Line-in line-out connection compatible with instruments. -Coexistence with existing 2.4GHz protocols such as bluetooth and WLAN. -Able to transmit lossless CD quality audio. Human-friendly enclosure with battery status LEDs and control buttons. |
|||||