erisAudioAnalyzeFFT1024()

erisAudioAnalyzeFFT1024::erisAudioAnalyzeFFT1024 ( )

inline

Definition at line 78 of file eris_analyze_fft1024.h.

                              : AudioStream(1, inputQueueArray),
      sample_block(0), outputflag(false ) {
        #ifdef ENABLE_F32_FFT
        arm_cfft_radix4_init_f32(&fft_inst,1024, 0, 1);
        window_f32 = AudioWindowBlackman1024_f32;//AudioWindowHamming1024_f32;//AudioWindowHamming1024_f32;//AudioWindowBlackman1024_f32;//AudioWindowKaiser12_1024_f32;//
        window = NULL;
        #else
        arm_cfft_radix4_init_q15(&fft_inst, 1024, 0, 1);
        window_f32 = NULL;
        window = AudioWindowHanning1024;
        #endif
        short_name="fft1024";
        unum_inputs=1;
        unum_outputs=0;
        category="analyze-function";
        enabled = false;
        outputflag = false;
        is_analyzed = true; //default state of true prevents potential analysis without available data on startup
        sample_block=0;
        SAMPLING_INDEX=0;
        MEM_STEP = 0x010;
        subsample_by = 4; 
        BLOCKS_PER_FFT = (1024 / AUDIO_BLOCK_SAMPLES) * subsample_by;
        BLOCK_REFRESH_SIZE = BLOCKS_PER_FFT/2;
        subsample_lowfreqrange = 16;//ratio should be 2:1; bw is fc of the low range
        subsample_highfreqrange = 8;// l,
        ssr = SS_HIGHFREQ;  
        //memset(&output_packed,0,sizeof(uint32_t)*512);
        memset(&buffer,0,sizeof(int16_t)*2048);
        #ifdef ENABLE_F32_FFT
        //memset(&output,0,sizeof(float32_t)*1024);
        arm_fill_f32(0,(float32_t*)output,1024);
        //memset(&tmp_buffer,0,sizeof(float32_t)*2048);
        arm_fill_f32(0,(float32_t*)tmp_buffer,2048);
        arm_fill_f32(0,(float32_t*)phase,512);
        #else
        memset(&output,0,sizeof(uint16_t)*512);
        memset(&tmp_buffer,0,sizeof(int16_t)*2048);
        #endif
    }

References BLOCK_REFRESH_SIZE, BLOCKS_PER_FFT, AudioStream::category, enabled, fft_inst, is_analyzed, MEM_STEP, outputflag, phase, sample_block, SAMPLING_INDEX, AudioStream::short_name, SS_HIGHFREQ, ssr, subsample_by, subsample_highfreqrange, subsample_lowfreqrange, AudioStream::unum_inputs, AudioStream::unum_outputs, window, and window_f32.