Craig Evans
Reads in audio signal on ADC, performs FFT and displays spectrum on Nokia 5110 LCD display.
History
Simple code which samples audio on ADC, calculates FFT and displays spectrum on LCD display.
2014-07-24, by eencae [Thu, 24 Jul 2014 15:25:26 +0000] rev 3
Simple code which samples audio on ADC, calculates FFT and displays spectrum on LCD display.
Added RGB LED which shows relative frequency components on each colour using PSM.
2014-07-22, by eencae [Tue, 22 Jul 2014 17:52:59 +0000] rev 2
Added RGB LED which shows relative frequency components on each colour using PSM.
Added in spectrum analyser display on Nokia 5110 LCD.
2014-07-22, by eencae [Tue, 22 Jul 2014 15:42:39 +0000] rev 1
Added in spectrum analyser display on Nokia 5110 LCD.
Initial version.; ; Reads in audio signal through ADC (signal needs externally biasing at Vcc/2).; ; Performs FFT on signal and extracts highest frequency component.; ; Also gets the RMS power in each set of samples and display a bar graph on the LEDs.
2014-07-22, by eencae [Tue, 22 Jul 2014 15:03:32 +0000] rev 0
Initial version.; ; Reads in audio signal through ADC (signal needs externally biasing at Vcc/2).; ; Performs FFT on signal and extracts highest frequency component.; ; Also gets the RMS power in each set of samples and display a bar graph on the LEDs.