|
|
|
@ -1,6 +1,7 @@ |
|
|
|
|
/*
|
|
|
|
|
* analyze_fft1024_iq_F32.cpp Assembled by Bob Larkin 3 Mar 2021 |
|
|
|
|
* Rev 6 Mar 2021 - Added setXAxis() |
|
|
|
|
* Rev 10 Mar 2021 Corrected averaging bracket - Bob L |
|
|
|
|
* |
|
|
|
|
* Converted to F32 floating point input and also extended |
|
|
|
|
* for complex I and Q inputs |
|
|
|
@ -144,6 +145,7 @@ void AudioAnalyzeFFT1024_IQ_F32::update(void) { |
|
|
|
|
sumsq[i] += ss1; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
if (count >= nAverage) { // Average is finished
|
|
|
|
|
count = 0; |
|
|
|
|
float inAf = 1.0f/(float)nAverage; |
|
|
|
@ -160,13 +162,17 @@ void AudioAnalyzeFFT1024_IQ_F32::update(void) { |
|
|
|
|
output[i] = sqrtf(inAf*sumsq[ii]); |
|
|
|
|
else if(outputType==FFT_POWER) |
|
|
|
|
output[i] = inAf*sumsq[ii]; |
|
|
|
|
else if(outputType==FFT_DBFS) |
|
|
|
|
output[i] = 10.0f*log10f(inAf*sumsq[ii])-54.1854f; // Scaled to FS sine wave
|
|
|
|
|
else if(outputType==FFT_DBFS) { |
|
|
|
|
if(sumsq[i]>0.0f) |
|
|
|
|
output[i] = 10.0f*log10f(inAf*sumsq[ii])-54.1854f; // Scaled to FS sine wave
|
|
|
|
|
else |
|
|
|
|
output[i] = -193.0f; // lsb for 23 bit mantissa
|
|
|
|
|
} |
|
|
|
|
else |
|
|
|
|
output[i] = 0.0f; |
|
|
|
|
} |
|
|
|
|
} // end of Average is Finished
|
|
|
|
|
outputflag = true; |
|
|
|
|
} // End, set output[i] over all 512
|
|
|
|
|
outputflag = true; // moved; rev10mar2021
|
|
|
|
|
} // End of average is finished
|
|
|
|
|
|
|
|
|
|
release(blocklist_i[0]); release(blocklist_q[0]); |
|
|
|
|
release(blocklist_i[1]); release(blocklist_q[1]); |
|
|
|
|