PROBLEM TO BE SOLVED: To provide a biological information processing device and biological information processing method, capable of obtaining more drastically improved spatial resolution compared with a conventional manner by accurately planarizing a frequency spectrum of a reception signal.SOLUTION: A biological information processing method includes: a process for receiving a reflection echo of a pulse wave radiated to a living body and acquiring a reception signal corresponding to the pulse wave a process for synthesizing multiple reference signals at a predetermined interpolation rate and generating a reference signal for calculation a process for performing whitening processing with respect to a reception signal by using a reference signal for calculation a process for calculating a power distribution concerning a depth direction inside a living body with respect to the reception signal after performing the whitening processing by applying a frequency area interferometer technique and a frequency average method and a process for determining a power distribution to be used for the acquisition of information inside the living body, based on multiple power distributions respectively calculated by changing an interpolation rate.COPYRIGHT: (C)2013,JPO&INPIT【課題】受信信号の周波数スペクトルを精度良く平坦化し、従来よりも飛躍的に空間分解能を向上させることが可能な生体情報処理装置および生体情報処理方法を提供する。【解決手段】生体情報処理方法が、生体に照射したパルス波の反射エコーを受信し、パルス波に対応する受信信号を取得する工程、複数の基準信号を所定の内挿率で合成し、演算用参照信号を作成する工程、演算用参照信号を用いて、受信信号に対してホワイトニング処理を行う工程、ホワイトニング処理を行った受信信号に対して、周波数領域干渉計法および周波数平均法を適用して、生体内の深さ方向に関する電力分布を算出する工程、内挿率を変化させてそれぞれ算出した複数の電力分布をもとに、生体内の情報の取得に用いる電力分布を決定する工程、を有する。【選択図】図3
