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/ohos5.0/base/sensors/sensor/vibration_convert/core/utils/include/
H A Dutils.h187 double mels = (frequencies - MIN_F) / FSP; in ConvertHtkMel() local
189 mels = (MIN_LOG_HZ - MIN_F) / FSP + log(frequencies / MIN_LOG_HZ) / LOG_STEP; in ConvertHtkMel()
191 return mels; in ConvertHtkMel()
194 inline double ConvertHtkHz(double mels) in ConvertHtkHz() argument
196 double freqs = MIN_F + FSP * mels; in ConvertHtkHz()
197 if (IsGreatOrEqual(mels, MIN_LOG_MEL)) { in ConvertHtkHz()
198 freqs = MIN_LOG_HZ * exp(LOG_STEP * (mels - MIN_LOG_MEL)); in ConvertHtkHz()