Modified comments

2 files changed, 15 insertions, 2 deletions

diff --git a/Graphic_Equalizer/src/fft.hcc b/Graphic_Equalizer/src/fft.hcc
index 1fda3b0..d7473b5 100644
--- a/Graphic_Equalizer/src/fft.hcc
+++ b/Graphic_Equalizer/src/fft.hcc
@@ -379,6 +379,8 @@ void perform_ifft(signed 16 *modified_audio, unsigned 6 *ifft_info)
 			modified_audio[k] = (p<-16);

 #endif

 			//Fill the array for displaying the waveform, only the 6 MSB are needed.

+			//Because the display routine needs unsigned values a cast is done here, this should be fixed

+			//in such a way a cast is not necessary anymore.

 			ifft_info[k] = (unsigned 6)(32+(p[17:12]));		

 			k++;

 		}

diff --git a/Graphic_Equalizer/src/runfft.hcc b/Graphic_Equalizer/src/runfft.hcc
index 55d4b05..7098070 100644
--- a/Graphic_Equalizer/src/runfft.hcc
+++ b/Graphic_Equalizer/src/runfft.hcc
@@ -105,6 +105,11 @@ macro proc audio_main(audiodata, AUDIOIN, AUDIOOUT)
   	FFT_Sync=0;

 par

 {

+	/*

+	 *	FFT loop, waits until 64 samples are read from the audio input

+	 *	before switching the pointers needed for double and quadruple buffering, after that

+	 *	sequentially calling the perform_fft, equalize_audio and perform_ifft functions.

+	 */

 	for(;;)

 	{

 		if (FFT_Sync)	//if 64 samples are read from ADC...

@@ -140,7 +145,10 @@ par
 		else

 			delay;

 	}	

-

+	/*

+	 *	Sampling loop, fills the audio input and output arrays and uses FFT_Sync

+	 * 	to notify the FFT when 64 samples are read from the audio input.

+	 */

 	for(sample_count=0;;)//store the samples in the inputbuffer

 	{

 		if (!FFT_Sync)

@@ -151,7 +159,7 @@ par
 				{

 					PalAudioInRead(AUDIOIN, &LeftNew, &RightNew);

 #if HARDWARE_MULTIPLY 					

-					audioptr_in1[sample_count] = LeftNew;//drop 2 LSB's

+					audioptr_in1[sample_count] = LeftNew;

 #else

 					audioptr_in1[sample_count] = (LeftNew\\2);//drop 2 LSB's

 #endif

@@ -172,6 +180,9 @@ par
 			delay;

 		}

 	}

+	/*

+	 *	Audio output loop, writes the modified audio samples to the audio output.	

+	 */

 	for(;;)

 	{

 		PalAudioOutWrite(AUDIOOUT,(signed OW)(Output_sample @ 0),(signed OW)(Output_sample @ 0));