bryan wade
Streams USB audio with sound effects applied. Sound effect selected by joystick and intensity altered by tilting the mbed. Output to the mbed-application-board phono jack.
Dependencies: C12832_lcd MMA7660 USBDevice mbed
/* Uses the mbed LPC1768 and mbed-application-board to create a USB audio device * that streams audio from a host computer to headphones or powered speakers. * A couple different sound effects can be applied to the stream in real-time, * and tilting the mbed alters intensity of the effect. * * ECHO * The joystick selects ) | * one of three effect ) STRAIGHT - o - STRAIGHT * modes. ) | * REVERB * * * * \\ || * Tilting the mbed ) ====== \\ || * determines intensity ) \\ || * of the effect. ) * 0% 50% 100% * * The LCD display shows the current effect mode, intesity and buffer level. */
Diff: delay.h
- Revision:
- 0:bbf6cf0eab95
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/delay.h Thu Mar 27 21:27:04 2014 +0000 @@ -0,0 +1,23 @@ +/******************************************************************************* + * Implements delay lines for audio samples. + * Bryan Wade + * 27 MAR 2014 + ******************************************************************************/ +#ifndef DELAY_H +#define DELAY_H + +#include <stdint.h> +#include <stdlib.h> + +typedef struct delay_t delay_t; // Opaque type declaration. + +// Get a ptr to a new delay struct +delay_t *Delay_Create(void); + +// Configure the delay length and ram location +bool Delay_Configure(delay_t *delay, void *ram, size_t size); + +// Write one sample with feedback to the delay and get one sample out. +int16_t Delay_WriteWithFeedback(delay_t *delay, int16_t dataIn, uint16_t gain); + +#endif