38   unsigned i;  in FFT()  local
40   for (i = 0; i < 2 * NumSamples; i += 2) {  in FFT()
41     work[i] = RealIn[i >> 1];  in FFT()
42     work[i + 1] = ImagIn? ImagIn[i >> 1] : 0;  in FFT()
45   if (InverseTransform) for (i = 0; i < 2 * NumSamples; i += 2) {  in FFT()
46     RealOut[i >> 1] = work[i] / NumSamples;  in FFT()
47     ImagOut[i >> 1] = work[i + 1] / NumSamples;  in FFT()
49   else for (i = 0; i < 2 * NumSamples; i += 2) {  in FFT()
50     RealOut[i >> 1] = work[i];  in FFT()
51     ImagOut[i >> 1] = work[i + 1];  in FFT()
88     size_t i;  in sox_noisered_start()  local
96     for (i = 0; i < channels; i ++) {  in sox_noisered_start()
97         data->chandata[i].noisegate = lsx_calloc(FREQCOUNT, sizeof(float));  in sox_noisered_start()
98         data->chandata[i].smoothing = lsx_calloc(FREQCOUNT, sizeof(float));  in sox_noisered_start()
99         data->chandata[i].lastwindow = NULL;  in sox_noisered_start()
115         for (i = 1; i < FREQCOUNT; i ++) {  in sox_noisered_start()
118 …                  "(expected %d, got %lu)", (unsigned long)fchannels, FREQCOUNT, (unsigned long)i);  in sox_noisered_start()
121             data->chandata[fchannels].noisegate[i] = f1;  in sox_noisered_start()
145     int i;  in reduce_noise()  local
153     for (i = 0; i < FREQCOUNT; i ++)  in reduce_noise()
154         assert(smoothing[i] >= 0 && smoothing[i] <= 1);  in reduce_noise()
164     for (i = 0; i < FREQCOUNT; i ++) {  in reduce_noise()
167         plog = log(power[i]);  in reduce_noise()
168         if (power[i] != 0 && plog < chan->noisegate[i] + level*8.0)  in reduce_noise()
173         smoothing[i] = smooth * 0.5 + smoothing[i] * 0.5;  in reduce_noise()
178     for (i = 2; i < FREQCOUNT - 2; i ++) {  in reduce_noise()
179         if (smoothing[i]>=0.5 &&  in reduce_noise()
180             smoothing[i]<=0.55 &&  in reduce_noise()
181             smoothing[i-1]<0.1 &&  in reduce_noise()
182             smoothing[i-2]<0.1 &&  in reduce_noise()
183             smoothing[i+1]<0.1 &&  in reduce_noise()
184             smoothing[i+2]<0.1)  in reduce_noise()
185             smoothing[i] = 0.0;  in reduce_noise()
193     for (i = 1; i < FREQCOUNT-1; i ++) {  in reduce_noise()
194         int j = WINDOWSIZE - i;  in reduce_noise()
195         float smooth = smoothing[i];  in reduce_noise()
197         outr[i] *= smooth;  in reduce_noise()
198         outi[i] *= smooth;  in reduce_noise()
208     for (i = 0; i < FREQCOUNT; i ++)  in reduce_noise()
209         assert(smoothing[i] >= 0 && smoothing[i] <= 1);  in reduce_noise()
265     size_t i;  in sox_noisered_flow()  local
276     for (i = 0; i < tracks; i ++) {  in sox_noisered_flow()
278         chandata_t* chan = &(data->chandata[i]);  in sox_noisered_flow()
286                 SOX_SAMPLE_TO_FLOAT_32BIT(ibuf[i + tracks * j], effp->clips);  in sox_noisered_flow()
291 …    process_window(effp, data, (unsigned) i, (unsigned) tracks, obuf, (unsigned) (oldbuf + ncopy));  in sox_noisered_flow()
310     unsigned i;  in sox_noisered_drain()  local
312     for (i = 0; i < tracks; i ++)  in sox_noisered_drain()
313         *osamp = process_window(effp, data, i, tracks, obuf, (unsigned) data->bufdata);  in sox_noisered_drain()
327     size_t i;  in sox_noisered_stop()  local
329     for (i = 0; i < effp->in_signal.channels; i ++) {  in sox_noisered_stop()
330         chandata_t* chan = &(data->chandata[i]);  in sox_noisered_stop()