Abstract: The purpose is to calculate wave information accurately. A signal processing device 10 is provided, which may include a frequency area spectrum generating module 8, an integrating module 17, and a wave information calculating module 18. The frequency area spectrum generating module 8 may carry out a frequency analysis of the echoes from the waves included in a plurality of analysis areas set within the detection area, respectively, and generate frequency area spectrums for the plurality of analysis areas, respectively. The integrating module 17 may integrate echo intensities indicated by each sampling point that constitutes each of the frequency area spectrums while unifying directions included in coordinates of the frequency area spectrum, and generate an integrated frequency area spectrum. The wave information calculating module 18 may calculate wave information that is information related to the waves included in the analysis areas based on the integrated frequency area spectrum, respectively.

Abstract: The purpose is to calculate wave information accurately. A signal processing device 10 is provided, which may include a frequency area spectrum generating module 8, an integrating module 17, and a wave information calculating module 18. The frequency area spectrum generating module 8 may carry out a frequency analysis of the echoes from the waves included in a plurality of analysis areas set within the detection area, respectively, and generate frequency area spectrums for the plurality of analysis areas, respectively. The integrating module 17 may integrate echo intensities indicated by each sampling point that constitutes each of the frequency area spectrums while unifying directions included in coordinates of the frequency area spectrum, and generate an integrated frequency area spectrum. The wave information calculating module 18 may calculate wave information that is information related to the waves included in the analysis areas based on the integrated frequency area spectrum, respectively.

Abstract: The purpose of the current invention is to provide a bone strength diagnosing device and a bone strength diagnosing method capable of accurately diagnosing a bone strength of a bone. A longitudinal ultrasonic transducer and a transverse ultrasonic transducer radiate ultrasonic waves onto a bone front surface of a tibia from a predetermined angle to generate surface waves that propagate in the bone front surface in a longitudinal direction of the tibia and in a direction perpendicular to the longitudinal direction, respectively, and receive leaky waves leaking to the side of the soft tissues from the front surface waves. A speed-of-sound calculating module calculates speeds of sound of the surface waves in the transverse direction and the longitudinal direction based on a difference between course lengths of the ultrasonic waves and a difference between propagation times.

Abstract: A shape detection method and device for detecting a shape of an object are disclosed. The device includes an ultrasonic wave transmission module, a reception module, an incoming direction detecting module, a propagation time detecting module, a front-surface reflection point detecting module, and a shape deriving module. The shape deriving module derives a shape of a front surface of the object using a plurality of the reflection points on the front surface of the object detected by the front-surface reflection point detecting module for a plurality of transducer groups.

Abstract: A speed-of-sound measurement apparatus includes a wave transmission module for transmitting an ultrasonic wave to a front surface of a subject's body, a plurality of wave reception modules which each receives the ultrasonic wave from the subject's body and outputs a waveform signal corresponding to the received ultrasonic wave, a presumed propagation time calculating module for calculating a propagation time from when the ultrasonic wave is transmitted by the wave transmission module to when the ultrasonic wave arrives at each of the wave reception modules after propagating along the front surface of the subject's body or inside the subject's body, based on a presumed value of speed-of -sound in the subject's body and a front surface shape of the subject's body, a validity index value calculating module for finding a validity index value to be an index of validity of the propagation time based on the waveform signals outputted by at least two of the plurality of wave reception modules, and a speed-of-sound de

Abstract: A bone strength diagnostic device includes a wave-transmission module that transmits an ultrasonic wave obliquely to a bone covered with soft tissues; a wave-reception module that receives the ultrasonic wave that exits from the bone to the side of the soft tissues; a shape detection module for detecting the shape of the front surface of the bone; and a speed-of-sound deriving module for deriving the speed of sound of the ultrasonic wave that propagates along the front surface of the bone, based on the received wave signals, and the shape of the front surface of the bone detected using the shape detection module.

Abstract: A speed-of-sound measurement apparatus includes a wave transmission module for transmitting an ultrasonic wave to a front surface of a subject's body, a plurality of wave reception modules which each receives the ultrasonic wave from the subject's body and outputs a waveform signal corresponding to the received ultrasonic wave, a presumed propagation time calculating module for calculating a propagation time from when the ultrasonic wave is transmitted by the wave transmission module to when the ultrasonic wave arrives at each of the wave reception modules after propagating along the front surface of the subject's body or inside the subject's body, based on a presumed value of speed-of-sound in the subject's body and a front surface shape of the subject's body, a validity index value calculating module for finding a validity index value to be an index of validity of the propagation time based on the waveform signals outputted by at least two of the plurality of wave reception modules, and a speed-of-sound der

Abstract: The purpose of the current invention is to provide a bone strength diagnosing device and a bone strength diagnosing method capable of accurately diagnosing a bone strength of a bone. A longitudinal ultrasonic transducer and a transverse ultrasonic transducer radiate ultrasonic waves onto a bone front surface of a tibia from a predetermined angle to generate surface waves that propagate in the bone front surface in a longitudinal direction of the tibia and in a direction perpendicular to the longitudinal direction, respectively, and receive leaky waves leaking to the side of the soft tissues from the front surface waves. A speed-of-sound calculating module calculates speeds of sound of the surface waves in the transverse direction and the longitudinal direction based on a difference between course lengths of the ultrasonic waves and a difference between propagation times.

Abstract: A bone strength diagnostic device includes a wave-transmission module for deriving a speed of sound that transmits an ultrasonic wave from a wave-transmission transducer for deriving the speed of sound obliquely to a bone covered with soft tissues; a wave-reception module for deriving the speed of sound that receives, with a plurality of wave-reception transducers for deriving the speed of sound, the ultrasonic wave that exits from the bone to the side of the soft tissues, the ultrasonic wave being received after it is transmitted from the wave-transmission module for deriving the speed of sound and propagating along a front surface of the bone; a shape detection module for detecting the shape of the front surface of the bone; and a speed-of-sound deriving module for deriving the speed of sound of the ultrasonic wave that propagates along the front surface of the bone, based on the received wave signals, using the wave-reception module for deriving the speed of sound, and the shape of the front surface of the

Abstract: The disclosed device includes a module for transmitting an ultrasonic wave from a transducer to an object, another module for receiving with transducers surface waves that are a reflection of the ultrasonic wave on the object surface, another module for detecting an incoming direction of the reflected wave to each transducer group using a time difference between reception timings of two reception transducers constituting each group, each group having two transducers adjacent to each other, another module for detecting a propagation time of the surface wave reached each group using a received wave signal of the surface wave of at least one of the reception transducers, another module for detecting a reflection point of the ultrasonic wave on the object surface based on the incoming direction and the propagation time of the surface wave detected for each group, and another module for deriving a shape of the object surface using the reflection points for the transducer groups.