46 results about "Pitch correction" patented technology

A digitised audio signal, such as an amateur's singing, and a digital guide audio signal are supplied to a time alignment process that produces a time-aligned new signal, time-aligned to the guide signal. Pitch along the time-aligned new signal and along the guide signal is measured in processes and which supply these measurement to a pitch adjustment calculator which calculates a pitch correction factor C′s(Fps) from these measurements and the nearest octave ratio of the signals. A pitch changing process modulates the pitch of the time-aligned new signal to produce a time-aligned and pitch adjusted new signal.

A processed representation of an audio signal having a sequence of frames is generated by sampling the audio signal within first and second frames of the sequence of frames, the second frame following the first frame, the sampling using information on a pitch contour of the first and second frames to derive a first sampled representation. The audio signal is sampled within the second and third frames, the third frame following the second frame in the sequence of frames. The sampling uses the information on the pitch contour of the second frame and information on a pitch contour of the third frame to derive a second sampled representation. A first scaling window is derived for the first sampled representation, and a second scaling window is derived for the second sampled representation, the scaling windows depending on the samplings applied to derive the first sampled representations or the second sampled representation.

Despite many practical limitations imposed by mobile device platforms and application execution environments, vocal musical performances may be captured and continuously pitch-corrected for mixing and rendering with backing tracks in ways that create compelling user experiences. In some cases, the vocal performances of individual users are captured on mobile devices in the context of a karaoke-style presentation of lyrics in correspondence with audible renderings of a backing track. Such performances can be pitch-corrected in real-time at a portable computing device (such as a mobile phone, personal digital assistant, laptop computer, notebook computer, pad-type computer or netbook) in accord with pitch correction settings. In some cases, pitch correction settings include a score-coded melody and / or harmonies supplied with, or for association with, the lyrics and backing tracks. Harmonies notes or chords may be coded as explicit targets or relative to the score coded melody or even actual pitches sounded by a vocalist, if desired.

Systems for providing substantially correct pitch audio associated with video played back at a rate other than originally recorded. A system in accordance with the present invention comprises a record / playback device, wherein the record / playback device records audio programming and associated video programming at a normal speed and plays back the recorded audio programming and associated video programming at a range of speeds, a computer, coupled to the record / playback device, for determining the playback speed of the record / playback device, and an audio controller, coupled to the computer, for amending the audio programming to match a playback speed of the associated video programming while substantially maintaining the pitch of the audio programming.

Vocal musical performances may be captured and, in some cases or embodiments, pitch-corrected and / or processed in accord with a user selectable vocal effects schedule for mixing and rendering with backing tracks in ways that create compelling user experiences. In some cases, the vocal performances of individual users are captured on mobile devices in the context of a karaoke-style presentation of lyrics in correspondence with audible renderings of a backing track. Such performances can be pitch-corrected in real-time at the mobile device in accord with pitch correction settings. Vocal effects schedules may also be selectively applied to such performances. In these ways, even amateur user / performers with imperfect pitch are encouraged to take a shot at “stardom” and / or take part in a game play, social network or vocal achievement application architecture that facilitates musical collaboration on a global scale and / or, in some cases or embodiments, to initiate revenue generating in-application transactions.

A lens driving device includes a lens, a moving member that supports the lens, a stationary member that movably supports the moving member, a pitch drive mechanism that drives the moving member in the pitch correction direction, and a yaw drive mechanism that drives in the yaw correction direction. The pitch drive mechanism has first and second magnets provided to the stationary member, and first and second coils provided to the moving member. The yaw drive mechanism has a third magnet provided to the stationary member, and a third coil provided to the moving member. The first and second coils are arranged on opposite sides of the lens when viewed in a third direction that is perpendicular to the pitch and yaw correction directions, and the third coil is arranged on the same side as the first coil with respect to the lens when viewed in the third direction.

The tone pitch of a given tone waveform is detected by forming an envelope waveform of the given tone waveform, holding the level of the envelope waveform at each of the zero cross times of the given tone waveform and releasing such holding starting new holding when the level of the given tone waveform exceeds the held level of the envelope waveform, and determining the pitch of the given tone waveform based on the period between the adjacent zero cross times, A correction target note pitch is provided, to which the detected tone pitch of the given tone waveform is corrected. The detected tone pitch, the correction target note pitch and the amount of correction are exhibited for the user to visually understand the pitch correction.

A processed representation of an audio signal having a sequence of frames is generated by sampling the audio signal within first and second frames of the sequence of frames, the second frame following the first frame, the sampling using information on a pitch contour of the first and second frames to derive a first sampled representation. The audio signal is sampled within the second and third frames, the third frame following the second frame in the sequence of frames. The sampling uses the information on the pitch contour of the second frame and information on a pitch contour of the third frame to derive a second sampled representation. A first scaling window is derived for the first sampled representation, and a second scaling window is derived for the second sampled representation, the scaling windows depending on the samplings applied to derive the first sampled representations or the second sampled representation.

Two methods are described for calculating the non-periodic display pixel pattern necessary for good viewing properties of a multiple view directional display with a fixed parallax barrier pitch. These methods could also be used to calculate optimum barrier pitch parameters for a display with a re-configurable parallax optic, such as a re-configurable parallax barrier, and a fixed pixel assignment, or to calculate hybrid system parameters in a display where the parallax optic (eg a parallax barrier) and the pixel assignment are both re-configurable. The first method uses a geometrical analysis to calculate a non-integer subpixel repeat unit for interlacing. In this approach interlacing starts at a point determined by the user's head position relative to the display. The non-integer number ensures that the interlace pattern inserts extra pixels where necessary in order to compensate for the user's head position. The second method uses a pixel-by-pixel calculation step, whereby every pixel's position relative to the user's eyes and the nearest slit of the barrier determines whether the pixel should show left-view or right-view information. This approach may be done for blocks of pixels, but performance is optimal when calculated on a pixel-by-pixel basis.

A circuit for correcting distortion produced by the lens of a digital camera when generating an image, which includes pixels. The correction circuit includes an address generation circuit for generating horizontal and vertical addresses for each pixel. A coefficient storage circuit stores a pitch correction coefficient associated with the horizontal or vertical address of each pixel. A storage circuit stores data for an image for which distortion is uncorrected in association with an address of the uncorrected image. A calculation circuit calculates the address of data of the uncorrected image corresponding to each pixel using the associated horizontal and vertical addresses and pitch correction coefficient of the horizontal or vertical address. A processing circuit reads the data of the uncorrected image from the storage circuit and generates data for a distortion-corrected image.

A voice activated music controller system, useful in association with a game system and a player is provided. The voice activated music controller system includes a voice activated controller, and a base station. The voice activated controller includes a transducer for receiving an audio signal, one or more sound effect controls, and a transmitter. The sound effect controls may be any of buttons, touch pads, roller balls, accelerometers and pressure sensors. The transmitter sends the audio signal and the control inputs to a receiver of the base station via a radio signal. A signal processor in the base station applies one or more sound effects to the audio signal according to the control inputs. These sound effects include one or more of a chorus effect, a pitch modulation, a pitch correction, a harmonizing effect, and a sound bite. This results in the generation of a processed audio signal which is outputted to the gaming system via a coupler.

A digitised audio signal 310, such as an amateur's singing, and a digital guide audio signal 312 are supplied to a time alignment process 320 that produces a time-aligned new signal 330, time-aligned to the guide signal. Pitch along the time-aligned new signal 330 and along the guide signal 312 is measure in processes 340 and 345 which supply these measurement to a pitch adjustment calculator 370 which calculates a pitch correction factor C'(Fps) from these measurements and the nearest octave ratio of the signals. A pitch changing process 380 modulates the pitch of the time-aligned new signal 330 to produce a time-aligned and pitch adjusted new signal 390.

Systems and methods for adjusting pitch of an audio signal include detecting input notes in the audio signal, mapping the input notes to corresponding output notes, each output note having an associated upper note boundary and lower note boundary, and modifying at least one of the upper note boundary and the lower note boundary of at least one output note in response to previously received input notes. Pitch of the input notes may be shifted to match an associated pitch of corresponding output notes. Delay of the pitch shifting process may be dynamically adjusted based on detected stability of the input notes.

An application for operating on a smart phone that records a musician's performance, either voice or instrumental, in combination with pre-recorded music. The combination allows for the auto tuning of the recording, the compression of the recording, the equalization of the recording, adding in reverb, correcting latency and the audio quantization of the rhythm, in addition to music enhancement features such as vocal spread, DeEsser, vocal doubler, vocal harmonizer, tape saturation, pitch correcdtion, flanger, phaser, auto pan, vibrato, tremolo, rotary, ring modulator, metalizer, expander, noise gate, wah, vocal leveling, tape stop, half speed, LoFi, and stutter. Once combined, the song is transmitted to social media and / or to an online store for sale. The user can also make a video with the song. Additional marketing such as song competitions or music reviews and ratings are also provided.

The invention discloses a heliostat reflecting facula offset correction method and belongs to the technical field of solar tower type thermal generating. According to the heliostat reflecting facula offset correction method, a heliostat reflecting facula offset correction device and a heliostat tracking offset database of the heliostat reflecting facula offset correction device are used for carrying out heliostat reflecting facula offset correction. The azimuth angle and the angle of pitch of a heliostat are adjusted and corrected by means of data on the ideal azimuth angle, the ideal angle of pitch, azimuth angle correction and angle of pitch correction of the heliostat in a heliostat tracking offset database based on relevant characteristics of tracking offset of the heliostat and the angle of pitch and the azimuth angle of the heliostat so as to achieve heliostat reflecting facula offset correction. The correction device and the heliostat tracking offset database of the correction device are low in cost and capable of resisting interference by ambient light and procedures of correcting heliostat reflecting facula offset are simple. The requirement for industrial on-spot application can be met. The heliostat reflecting facula offset correction method is suitable for heliostat reflecting facula offset correction of a heliostat tracking system of a tower type solar thermal generating station.

A circuit for correcting distortion produced by the lens of a digital camera when generating an image, which includes pixels. The correction circuit includes an address generation circuit for generating horizontal and vertical addresses for each pixel. A coefficient storage circuit stores a pitch correction coefficient associated with the horizontal or vertical address of each pixel. A storage circuit stores data for an image for which distortion is uncorrected in association with an address of the uncorrected image. A calculation circuit calculates the address of data of the uncorrected image corresponding to each pixel using the associated horizontal and vertical addresses and pitch correction coefficient of the horizontal or vertical address. A processing circuit reads the data of the uncorrected image from the storage circuit and generates data for a distortion-corrected image.

Two methods are described for calculating the non-periodic display pixel pattern necessary for good viewing properties of a multiple view directional display with a fixed parallax barrier pitch. These methods could also be used to calculate optimum barrier pitch parameters for a display with a re-configurable parallax optic, such as a re-configurable parallax barrier, and a fixed pixel assignment, or to calculate hybrid system parameters in a display where the parallax optic (eg a parallax barrier) and the pixel assignment are both re-configurable. The first method uses a geometrical analysis to calculate a non-integer subpixel repeat unit for interlacing. In this approach interlacing starts at a point determined by the user's head position relative to the display. The non-integer number ensures that the interlace pattern inserts extra pixels where necessary in order to compensate for the user's head position. The second method uses a pixel-by-pixel calculation step, whereby every pixel's position relative to the user's eyes and the nearest slit of the barrier determines whether the pixel should show left-view or right-view information. This approach may be done for blocks of pixels, but performance is optimal when calculated on a pixel-by-pixel basis.

A system and method for correction of finger positions for an electronic musical instrument. By adding a correction step in the direction of a nearest grid value, the system can perform correction in a manner that allows for gradual position correction while maintaining a vibrato or glissando shape that is similar to vibrato or glissando shape of the actual finger positions over time. The system and method may be used for pitch correction for a continuous-pitch electronic musical instrument.

Systems, including methods and apparatus, for applying audio effects to a non-ambient signal, based at least in part on information received in an ambient audio signal. Exemplary effects that can be applied using the present teachings include generation of harmony notes, pitch-correction of melody notes, and tempo-based effects that rely on beat detection.

The invention provides a song mode determining method, which comprises the steps of acquiring music score information of a song; acquiring the scale step in each mode; according to the scale step in each mode, determining natural notes in a note sequence corresponding to each mode of the song; according to the note sequence of the song and the duration of each note in the note sequence, determining the ratio of the natural notes in the note sequence corresponding to each mode of the song; and determining the mode corresponding to the maximum ratio of the natural notes as the mode of the song. The invention further provides a song mode determining device. The song mode determining method and the song mode determining device can determine the mode of the song according to the ratio of the natural notes in the note sequence of the song and correct the pitch according to the scale step in the corresponding mode; and the mode determining accuracy and the pitch correction accuracy are high.

An air suspension system used for controlling trailer pitch angle between a vehicle and a trailer, where the air suspension system includes a plurality of corner assemblies, and a plurality of wheel locations, where each of the corner assemblies is located in proximity to a corresponding one of the wheel locations. The corner assemblies and the wheel locations are part of a vehicle, and a trailer is connected to the vehicle using a trailer hitch such that there is a pitch angle, which is the relative angle between the trailer and the vehicle. One or more of the corner assemblies are used to adjust the position of the vehicle such that the pitch angle is changed, and the vehicle is positioned as desired relative to the trailer.

The invention discloses a heliostat reflecting facula offset correction method and belongs to the technical field of solar tower type thermal generating. According to the heliostat reflecting facula offset correction method, a heliostat reflecting facula offset correction device and a heliostat tracking offset database of the heliostat reflecting facula offset correction device are used for carrying out heliostat reflecting facula offset correction. The azimuth angle and the angle of pitch of a heliostat are adjusted and corrected by means of data on the ideal azimuth angle, the ideal angle of pitch, azimuth angle correction and angle of pitch correction of the heliostat in a heliostat tracking offset database based on relevant characteristics of tracking offset of the heliostat and the angle of pitch and the azimuth angle of the heliostat so as to achieve heliostat reflecting facula offset correction. The correction device and the heliostat tracking offset database of the correction device are low in cost and capable of resisting interference by ambient light and procedures of correcting heliostat reflecting facula offset are simple. The requirement for industrial on-spot application can be met. The heliostat reflecting facula offset correction method is suitable for heliostat reflecting facula offset correction of a heliostat tracking system of a tower type solar thermal generating station.

The invention relates to the technical field of audio. The embodiment of the invention provides a method for correcting timbre in real time, which comprises the following steps of: performing singingby a user according to the standard rhythm of a song, and acquiring singing sound when the user sings the song in real time; extracting the pitch in the user's song, comparing the pitch with the pre-stored standard pitch of the song, and correcting the user's song according to the pitch difference; extracting a resonance peak value of the user song after pitch correction, and carrying out reversecorrection on the resonance peak value; and pre-storing the fixed formant parameters, performing weighting processing on the reversely corrected formant value of the user song and the pre-stored fixedformant parameters, and beautifying the user song. Through the technical scheme of the invention, the singing sound of the user can be corrected in real time. According to the technical scheme, the problem of singing tone shifting can be solved, it can be guaranteed that the tone of the corrected singing sound of the user is natural and listening, the corrected singing sound can be beautified, and the listening feeling of songs sung by the user is greatly improved.

The invention discloses a method for manufacturing a steel strip for a central cooling tube and a method for winding the cooling tube, wherein the method for manufacturing a steel strip for a central cooling tube comprises steps of first annealing, twice cold drawing, second annealing, acid washing, third annealing, twice cold rolling, third annealing and twice cold rolling again. The method for winding the cooling tube comprises the steps of the installation and the correction of a strip guiding wheel, the installation and the correction of a winding tooling, the installation and the correction of a tooling for measuring the external diameter of the cooling tube, the installation and the correction of a synchronous back twisting device, pitch correction, winding and cleaning. The rectangular steel strip manufactured in the invention has fine conformity, and the central cooling tube manufactured by winding the rectangular steel strip has perfect appearance; the surface of the central cooling tube has no lateral reverse curve, and the external diameter and the pitch of the central cooling tube are uniform to fulfill various kinds of tolerance requirements in practical use; the central cooling tube has great continuous winding length, has a wide range of application in the manufacture of a fusion reactor superconductor in the future, and already has practical application especially in the R&D (Research & Development) and preproduction phases of the superconductor in ITER (International Thermonuclear Experimental Reactor) which is the cooperation of 7 parties at present.

According to one embodiment, an information storage apparatus comprises a storage medium with a first servo pattern having absolute position information and a second servo pattern having relative position information, a pitch correction module configured to move a head with an initial feed pitch by using the second servo pattern by a target distance determined from the first servo pattern, and to correct the initial feed pitch based on a moving distance of the head and a target distance, a head position controller configured to position the head based on the initial feed pitch corrected by the pitch correction module and information of the first and the second servo patterns, and a recording signal generator configured to generate a control signal for making the head record the third servo pattern having the absolute position information.

The present invention provides a system for pitch correction. The interactive surface is embedded with a host, an antenna, a memory unit, a voice input device, an audio recognition device, and a media player. The function of each light-emitting contact point is determined or changed by the host in accordance with preset programs. Each physical sheet is embedded with an RFID tag and is printed with a set of pitch marks with increasing difficulty levels, and the location of a functioning area on a physical sheet for the light-emitting contact points is determined in accordance with the preset programs, and the light-emitting contact points correspond to the location of the functioning area. Once a physical sheet is placed on the interactive surface, the host assigns preset flashing rules to the array of light-emitting contact points in accordance with the preset programs as well as the RFID tag embedded in the physical sheet, and generates a preset flashing pattern on the physical sheet, and activates touch functions of the corresponding light-emitting contact points. The visible feedback provides users a straightforward understanding how much their voices deviate from the reference pitches.

The invention discloses a short focus large-frame image equal scale optical correction method, which belongs to the aviation and navigation image measurement field. The purpose of the invention is to provide a short focus large-frame image equal scale optical correction method for the optical correction of a film image and a digital image while outputting the images. An inclination between the aviation image and the vertical ground is determined according to a pitch angle, a roll angle and a yaw angle; a photographic film is imaged at a central position of a correction lens I and a correctionlens II, the scale of each point on the photograph after the correction is a vertical scale; the three-degree-of-freedom control of the photographic film and photographic paper is realized by a three-degree-of-freedom platform; the photographic film is arranged according to a perpendicular set angle with an imaging main optical shaft, pitch correction is same as roll correction; the roll correction and the pitch correction are carried out on a two-degree-of-freedom platform to ensure that image deformation caused by two postures can be corrected, thus a positive shot image is formed. By usingthe optical correction method, man-made image deformation cannot be caused. The equal scale (the ratio of photographic films to photos is 1: 1) can be realized.

A method for manufacturing a cured, toothed belt is carried out upon a on a belt-making machine. The method includes incrementally molding sections of the belt with tooth spacing based on an estimated pitch circumference derived from a measured inside circumference, defining and measuring a length of a remaining uncured portion of the belt, the length of the remaining uncured portion of the belt being compared to a design length, a difference between the length of the remaining uncured portion of the belt and the design length being an error; and, adjusting a distance between a centerline of the first drum and the second drum, so that a compensating error is evenly distributed over the remaining uncured portion of the belt. One advantage of this invention is that the cumulative error generated by measuring and curing each section of the belt in an "end to end" manner can be compensated by small adjustments made over a large section of the belt, preventing a large error in the last section of the belt.