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Microcontroller Solutions
Digi-Key is your source for electronic component training.  Our application notes provide instructions and recommendations for a variety of products, all of which come directly from the supplier.

Application Notes - Audio
SuppliersTechnologyTitleSource Code
AtmelAudioAVR32120: Using the 32-bit AVR UC3 audio bitstream DAC driverView
AtmelAudioAVR32722: How to license audio and video codecs  
AtmelAudioAVR335: Digital Sound Recorder with tinyAVR or megaAVR and DataFlashView
AtmelAudioAVR336: ADPCM Decoder on tinyAVR and megaAVR devicesView
Cirrus Logic, Inc.AudioAN199: DAI Interface for Playing MP3 Music  
Freescale Semiconductor, Inc.AudioAudio Tone Generation  
Infineon TechnologiesAudioAP1610410: XC161CJ Performing Audio Processing  
Infineon TechnologiesAudioAP1617520: XC164CM Playing music using the CAPCOM6 module using the KEIL tool chain µVision4  
Maxim IntegratedAudioAN3266: Using the DS80C400/TINIm400 for Remote Audio  
Maxim IntegratedAudioAN3483: Audio Filtering with the MAXQ2000  
Maxim IntegratedAudioAN4148: Piezoelectric Tone Generation Using the MAXQ3210  
Maxim IntegratedAudioAN609: Internet Speaker with the DS80C400 Silicon Software  
Microchip TechnologyAudioAN1128: TCP/IP Networking: Internet Radio using OLED Display and MP3 Audio Decoder  
NXP SemiconductorsAudioAN10583: ARM7 (32-bit) Realizing an MP3 player with the LPC2148, using libmad and EFSL  
NXP SemiconductorsAudioAN10687: ARM7 (32-bit) AN10687 - IEC 60601-1-8 audible alert generator using the LPC2000  
NXP SemiconductorsAudioAN10695: ARM7 (32-bit) Using the LPC288x in audio application  
NXP SemiconductorsAudioAN10875: Cortex-M3 (32-bit) IEC 60601-1-8 audible alert generator using the LPC1700  
NXP SemiconductorsAudioAN96022: 80C51 (8-bit) High-End RDS/EON Car Radio System CCR520S (V2.6)  
Renesas Electronics AmericaAudioBuzzer Output  
Renesas Electronics AmericaAudioDigital Audio I/F driver  
Renesas Electronics AmericaAudioMusical Scale Program  
STMicroelectronicsAudioAN2400: ST7Lite Audio player evaluation board  
Texas InstrumentsAudioSLAA361: MSP430 Speech and Sound Compression/Decompression With MSP430  View
Texas InstrumentsAudioSLAA405A: MSP430 Low-Cost Speech With MSP430 (Rev. A)  View
Texas InstrumentsAudioSPNA102: TMS470 Vocoder Implementation Using TMS470 High-End Timer  View