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ADPCM and Speex (Audio) Library for PIC32 MCUs
https://www.microchip.com/SWLibraryWeb/product.aspx?product=ADPCM%20and%20Speex%20Audio%20Library#:~:text=AAC%20Decoder%20Libraries%20for%20PIC32MX%20for%20MLA%20based,better%20sound%20quality%20at%20the%20same%20bit%20rate.
PIC32 Audio | Microchip Technology
https://www.microchip.com/development-tools/reference-designs/pic32-audio
The PIC32 Audio Equalizer (EQ) Filter Library is specifically designed to assist with multiple-frequency filtering of digital audio. The library can work from multiple audio sources, and customize the listening experience to compensate for …
Speech playback on PIC32, 8:1 compression | Hackaday.io
https://hackaday.io/project/8322-speech-playback-on-pic32-81-compression
running on the PIC32. A voice sample was analysed and reconstructed using 15 filter channels, and with the filter power down-sampled to every 16 milliseconds (approximately one fundamental period). Overall compression is 8:1 from the 8-bit, 8KHz input samples to the sampled filter outputs. The Matlab analyser and reconstruction is here.
PIC32 Bluetooth Audio Software Suites | Microchip …
https://www.microchip.com/development-tools/reference-designs/pic32-bluetooth-audio-software-suites
PIC32 AAC Decoder Library Advanced Audio Coding (AAC) is a standardized lossy compression scheme for digital audio that was intended to be the successor for the MP3 standard. The AAC audio compression standard is common to Apple iPhone, iPod and iPad devices. AAC decode is available in the PIC32 Bluetooth Audio Software Suite 2 package.
ADPCM With A PIC32 - Cornell University
https://people.ece.cornell.edu/land/courses/eceprojectsland/STUDENTPROJ/2016to2017/arl228/project_14_report.pdf
The aim of this project, was to compress audio data in such a way so that the quality was preserved but was given at a lower bit rate, utilizing a PIC32 microcontroller. The speech compression algorithm used is known as adaptive differential pulse code modulation or ADPCM.
MP3 Decoder Libraries for PIC32 - Microchip Technology
https://www.microchip.com/development-tools/reference-designs/mp3-decoder-libraries-for-pic32
MP3 is a compression format for storing digital audio data. It is an audio codec that has the capability to compress the original audio source with minor loss in sound quality. The higher the compression ratio, the lower the quality. Therefore, there is …
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