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CE222221 – PSoC 6 MCU Voice Recorder

Objective

This example demonstrates the use of PSoC

6 MCU to implement a voice recorder.

Overview

This project shows how PSoC 6 MCU can be used to record audio data, store it and play it back. It uses a digital microphone

with the pulse-density modulation (PDM) to pulse-code modulation (PCM) converter hardware block. All the audio data captured

by the microphone is stored to an external flash memory. After the recording is completed, you can play the audio data over

Inter-IC Sound (I

S), which interfaces with an audio codec. You can record/stop/play/pause/resume with CapSense

buttons.

You can control the audio volume with the CapSense slider. The TFT LCD displays the current state of the voice recorder, the

volume, and the time of the record/play.

Figure 1

shows the high level-block diagram of this application.

Figure 1. Block Diagram

UDB = Universal Digital Blocks

QSPI = Quad-SPI

SMIF = Serial Memory Interface

TFT = Thin-Film Transistor

www.cypress.com

Document Number: 002-22221 Rev. *C