dSPIC Wav Recorder Wav Player Project

There is hex software built on the circuit DSPIC33FJ64GP802-I/SP microcontroller, unfortunately there is no source code, but since there is a shortage of resources for the dspic series and level microcontrollers, at least the hardware design departments can give some idea.

MMC-SD-SDHC memory card with DSPIC `s communications, key combinations, microphone input and output processing, feeding floors, DSPIC IR communication all in one collected in a project of this type of design for your studies can be an example

dSPIC Wav Player Features

Supported memory cards MMC / SD / SDHC
Mono 16kHz stereo WAV audio recording
44.1kHz WAV playing sound recordings
Input and output sockets
FAT/FAT32 file system (if any operating system)
2 × 16 LCD screen on the record / playback information display
RC5 remote control or intelligent control
Signal to noise ratio:-70dB (22Hz to 22kHz) with 1.6V RMS
Total harmonic distortion THD + N at 1kHz 0.7%

dSPIC Recorder/Player Input Output Units

Line of section connect any audio source, and relax on the card can record. Connect a microphone to the Mic in section register and you can listen to sounds in the environment memory card socket on the pcb board also had a pot of sound settings for throttle opening

The information displayed on the LCD:

Audio playback information, recording time, recording the name frequency, mono-stereo information, the volume, and you can see the status of the card memory. Working with 12volt DC supply circuit regulated operations and 78xx series LM317 regulators provided with 2 × 16-lcd audio output is driven by 74HC595 upgraded with lm833

source : http://www.siliconchip.com.au/cms/A_111521/article.html

dSPIC Wav Recorder Wav Player Project schematic pcb picmicro source code files