I've interfaced my Tiva LaunchPad (ARM Cortex-M4) development board with a small LCD screen as shown in the video below. The LCD screen is a Newhaven display, model number NHD-0420H1Z-FL-GBW-33V3.

Below is a circuit diagram I've drawn to show how everything is setup. It's fairly simple as…

I've figured out how to use DMA (direct memory access) on the Tiva LaunchPad (ARM Cortex-M4) microcontroller when using peripherals like an audio output DAC (digital to analog converter).

The DMA controller on the Texas Instruments Tiva LaunchPad is known as "micro-DMA" and is abbreviated as "μDMA…

I've improved my Phase Vocoder application by adding in a resampler. Using the resampler in conjunction with my Phase Vocoder's existing time stretch/compress abilities allows for pitch shifting. Here's a demonstration:

The original version of my Phase Vocoder is described in detail here…

I've managed to interface a typical MIDI keyboard controller (an M-Audio Oxygen 61) with my Texas Instruments Tiva LaunchPad (ARM Cortex-M4) development board as shown below.

By doing some Googling I found out that the MIDI protocol is a typical UART connection running at a baud rate of 31,250. Th…

I've improved my transient detection algorithm (original version described here) and have now included it in my Phase Vocoder application (original version of my Phase Vocoder described here). I'm pretty happy with the quality. Here's an audio example:

As mentioned in my previous post, p…