Abstract: A method of using magnetic resonance imaging (MRI) systems for acquiring separate data contributions in images of subjects derived from at least a first and a second spectral components, the method comprising: applying RF pulses; receiving RF signals with a phased array coil arrangement having a plurality of segments; acquiring two initial complex images, the first of the two initial images being a complex image of each of the spectral components in phase; the second of the two initial images being a complex image of each of the spectral components out of phase, the first of said two initial complex images ostensibly being a plus image, and the second of said two complex images ostensibly being a minus image initially; and matching the ostensible plus and minus images so that the first complex images and the second complex images are grouped together for further processing. Preferably, a two-point Dixon method is used to generate the components.

Abstract: This invention is a display system for measuring and displaying, individually or simultaneously, the frequencies contained in a musical sound. A transducer coupled to the sound source produces an electrical signal representing the musical sound. The system receives the signal and separates and measures the frequencies of the individual tones comprising the sound. The measured frequency values are displayed as the frequencies themselves or as deviations from target frequencies. The system can utilize a local transducer with the display system or a remote transducer coupled to the sound source.

Abstract: This invention is a display system for an automatically tuned stringed instrument displaying, individually or simultaneously, the frequency of each string of the instrument. The system provides for using the display to manually tune the instrument or to initially tune the instrument to within the operating range of the automatic tuning system.

Abstract: This invention is a display system for an automatically tuned stringed instrument displaying, individually or simultaneously, the frequency of each string of the instrument. The system provides for using the display to manually tune the instrument or to initially tune the instrument to within the operating range of the automatic tuning system.

Abstract: The invention is a control system for automatically tuning a stringed musical instrument with a capo installed, using an original calibration function or closed-loop tuning system for the instrument without the capo. The control system uses a capo scale factor which scales frequencies measured with the capo installed to what they would have been without a capo. The control system enables a musician to quickly tune an instrument after installing a capo, in a manner unlikely to be noticed by an audience.

Abstract: This invention provides a control system for automatically tuning a stringed musical instrument, utilizing a library of calibration functions to tune the instrument in a plurality of operating conditions without recalibration. The operating conditions can include changes in temperature and humidity, different sets of strings made with different materials and gauges, broken strings and the installation of a capo. Calibrations can also be provided for instruments of different makes and models, string lengths, body materials and actuator types. The control system is adapted for use in a stringed instrument having actuators attached to each string for changing the frequency of the string in response to a control signal. Each calibration function relates the frequency of a string to the actuator position of that string. The invention further provides an automatically tuned stringed instrument using the control system, and a method for tuning a stringed instrument.

Abstract: A tuning system is described for automatically tuning a musical instrument having adjustment means for changing the frequency of a musical tone produced by the instrument. The tuning system is useful with respect to a wide variety of musical instruments, e.g., stringed instruments such as guitars, harps, pianoes, etc.; horns; and other instruments. The tuning system is capable of automatically tuning all strings of a stringed instrument simultaneously.

Abstract: A tuning system is described for automatically tuning a musical instrument having adjustment means for changing the frequency of a musical tone produced by the instrument. The tuning system is useful with respect to a wide variety of musical instruments, e.g., stringed instruments such as guitars, harps, pianoes, etc.; horns; and other instruments. The tuning system is capable of automatically tuning all strings of a stringed instrument simultaneously.