We developed an audio spectrum analyzer as our final project for ECE 4760. This analyzer presented a histogram-style representation of audio signals. We successfully achieved real-time display of the audio signal’s frequency spectrum using a monochromatic histogram layout, where bins extended from left to right, representing low to high frequency ranges. Our system was built […]
Audio Spectrum Analyzer Read More »
Introduction This project implements a real-time audio spectrum analyser using a PIC18F4550 8-bit microcontroller. The spectrum frequency analysis is performed by a highly optimised 16-bit Fast Fourier Transformation (FFT) routine coded entirely in C. The output from the FFT is displayed using a 128×64 graphical LCD to allow a real-time view of an audio signal.
Audio spectrum analyzer using PIC18F4550 Read More »
Introduction The webpage describes the development of an Audio Spectrum Analyzer based on PIC32 microcontroller with the following features: Real time speech signal acquisition Spectrum and spectrograph visualization of Mel Frequency bands Serial interface for forwarding Mel Frequency Band Power Spectrum coefficients Recording and playback of speech signal using serial RAM Spectrum Visualization on PC
Supported Browser For optimal experience with the equations, please use a browser that can render MathML, such as Firefox or Safari. Chromium-based browsers apparently do not support MathML. Introduction This project sends and receives low-latency audio over the network using the PIC32 microcontroller. In this project, we implemented a system that sends audio packets over
PIC32 Realtime Network Audio Read More »
This little project is an example of a simple audio application using a PIC micro-controller. We decided to use the PIC18F4550 micro-controller for memory purposes. Using only digital inputs and outputs, we developed this simple piano/synthesizer with an 8 bit kind of style: Inputs from b1 to b11 are the push buttons in the circuit while
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