The goal of project is to helps people develop the musical skills of perfect pitch and relative pitch. Push buttons allow the user to navigate a graphical user interface (GUI) on a liquid crystal display (LCD). In perfect pitch training mode, a note is played and the user tries to identify the note on [...]
The project uses Direct Digital Synthesis to generate sine, triangular and square waves in the range of 1 Hz to 150 KHz with 1Hz resolution. The frequency can be set through 16 switch numeric keypad or rotary shaft encoder (fine adjustment) and is displayed on a backlight numeric LCD module, Varitronix LCD module VIM-808. [...]
This RLC meter design uses direct digital synthesis (DDS) techniques to generate the test waveform and digital signal processing (DSP) methods to condition the resulting voltage and current signals. Three test frequencies are implemented (100Hz, 1kHz, 10kHz) and both parallel and series circuit models are evaluated, automatic selection of both frequency and circuit model is [...]
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