Revision 3:ec7e3c37fe80, committed 2015-11-26

Comitter:

EricLew

Date:

Thu Nov 26 22:32:56 2015 +0000

Parent:

2:1066910a6cbc

Commit message:

FFT is currently not working and commented out

Changed in this revision

diff -r 1066910a6cbc -r ec7e3c37fe80 audio_record.c
--- a/audio_record.c	Wed Nov 25 17:35:26 2015 +0000
+++ b/audio_record.c	Thu Nov 26 22:32:56 2015 +0000
@@ -4,6 +4,9 @@
 /* Variable indicating which audio demo is currently running (playback v.s. record) */
 Audio_DemoTypeDef AudioDemo = AUDIO_DEMO_NONE;
 
+
+
+
 /* Private typedef -----------------------------------------------------------*/
 typedef enum
 {
@@ -22,9 +25,9 @@
 static uint32_t RecordBuffer1[RECORD_BUFFER_SIZE];//RECORDING BUFFER FOR SAMPLE #1
 
 /* Buffer used to stream the recorded PCM samples towards the audio codec. */
-static uint16_t PlaybackBuffer[RECORD_BUFFER_SIZE*2]; //PLAYBACK BUFFER FOR SAMPLE#0
-static uint16_t PlaybackBuffer1[RECORD_BUFFER_SIZE*2];//PLAYBACK BUFFER FOR SAMPLE#1
-
+static uint32_t PlaybackBuffer[2048]; //PLAYBACK BUFFER FOR SAMPLE#0
+static uint32_t PlaybackBuffer1[2048];//PLAYBACK BUFFER FOR SAMPLE#1
+ 
 
 #define NB_SAMPLES_RATE 7
 static uint32_t SamplesRates[NB_SAMPLES_RATE] = {BSP_AUDIO_FREQUENCY_48K}; //SAMPLE RATE IS THE SAME
@@ -232,16 +235,19 @@
   
   /* Reset AudioRecordExit flag */
   AudioRecordExit = 0;
- 
-//COMPARISON ALGORITHM START
-
-/*arm_cfft_f32    (   const arm_cfft_instance_f32 *   S,
-    float32_t *     p1,
-    uint8_t     ifftFlag,
-    uint8_t     bitReverseFlag 
-)   
     
-    */
+//  uint32_t fftLenReal=4096;
+//  uint32_t ifftFlagR=0;
+//  uint32_t bitReverseFlag=0;
+//  
+//  arm_rfft_init_q31   (arm_rfft_instance_q31, fftLenReal, ifftFlagR, bitReverseFlag)  
+//  
+//  
+//  arm_rfft_q31    (   const arm_rfft_instance_q31 *   S, &PlaybackBuffer,
+//q31_t *   pDst 
+//) 
+//  
+    
     
     /* Turn off green led */
   AudioDemo = AUDIO_DEMO_NONE;