Introduction Our final project is a NES-style chiptune player that changes its playback tempo in response to heart rate measurements from the user. The chiptune player successfully generates four individual channels: pulse, triangle, noise, and delta modulation. After audio mixing through a hardware circuit, the resulting mono signal sounds as intended, with no waveform clipping […]
Chiptune Mega Mega Read More »
Introduction “A device that pitch-shifts voice in real time” For our final project, we attempted to implemented a real-time vocal pitch shifter. The system was designed to work as follows: a user speaks into a microphone, their vocals are processed using a pitch shifting algorithm, and the resulting signal is output through speakers. All of
Real-Time Pitch Shifter. Read More »
Introduction This project visually displays the frequency content of an audio signal using an 8X3 grid of LEDs. A microphone and amplifier collect analog audio input which is sampled digitized using the MCU’s analog-digital converter. The samples are buffered and and a 32 point discrete cosine transform is performed in real time to obtain 32
Frequency Visualizer Read More »
Introduction For our final project, we have decided to use the microcontroller provided to make a device which would measure body fat percentage of one’s body. The basic principle behind this project is known as bioelectrical impedance analysis. This technique uses a small alternating current flowing between two electrodes attached to skin surface to determine
Bioelectrical Body Fat Analyzer Read More »
INTRODUCTION This project implements a real-time scrolling spectrogram-style visualization of an audio signal. We successfully displayed the frequency spectrum content in real time using a 4-bit grayscale scrolling display on any NTSC television. The frequency spectrum of an audio line-in input or mic input is calculated and displayed in real time using two ATmega1284 microcontrollers
REAL-TIME SCROLLING SPECTROGRAM Read More »
Analog Devices’ LTC7804 offers low Iq, small solution size, and PassThru™ operation for up to 99.9% efficiency ADI’s LTC7804 is a low IQ, 3 MHz PassThru operation capable synchronous boost DC/DC switching regulator controller that operates up to a 40 V input voltage. Its low quiescent current extends operating runtime in battery-powered systems. Spread spectrum frequency
LTC7804 40 V 3 MHZ BOOST CONTROLLER WITH SPECTRUM FREQUENCY Read More »
Rohde & Schwarz (R&S) released the SMCV100B, a signal generator that covers 5G NR extended FR1 frequency range up to 7.126 GHz. It leverages the R&S WinIQSIM2 simulation software, which supports common cellular and wireless connectivity standard. This includes standards for IoT and Wi-Fi. Working within the automotive industry, the R&S SMCV100B is suitable for end-of-line testing of radios
ROHDE & SCHWARZ RELEASES NEW SIGNAL GENERATOR Read More »
ATmega32 – 8 Bit AVR Microcontroller The AVR microcontrollers are based on the advanced RISC architecture. ATmega32 is a low power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. AVR can execute 1 million instructions per second if cycle frequency is 1MHz. Key Features: 32 x 8 general working purpose registers. 32K bytes
Types of AVR Microcontroller – Atmega32 & ATmega8 Read More »
High Performance Fixed Frequency PLO at 9.25 GHz Z-Communications, Inc. announces a new RoHS compliant fixed frequency phase locked loop model SFS9250C-LF operating in the X-band. The SFS9250C-LF is a simple to use plug and play PLO allowing for quick integration. It is designed to produce a fixed signal at 9250 MHz while locked to
NEW PHASE LOCKED OSCILLATORS AVAILABLE IN TAPE AND REEL PACKAGING Read More »
The circuit described here is a simple PFC controller using the UCC28180 chip from Texas instruments. The controller operates under average current mode control at a fixed programmable switching frequency of 116 kHz. Simple external current and voltage loop compensation, along with advanced protection features, make this controller ideal for server and desktop power supplies, industrial power supplies, and white
