248 results about "High-pitched" patented technology

Systems and methods for providing real-time feedback to karaoke users are provided. The systems and methods for providing users with real-time feedback while they are singing karaoke generally relate to receiving the user's vocals, determining whether the user is singing on key / pitch and providing real-time feedback to the user while the karaoke song is being sung. The feedback will be positive feedback if user is on key / pitch and it will be negative feedback if user is off key / pitch. For example, the feedback signal if the user is singing too low can be an exaggerated low signal of the user's own voice. This will encourage the user to sing at a higher pitch.

A computerized interactor system uses physical, three-dimensional objects as metaphors for input of user intent to a computer system. When one or more interactors are engaged with a detection field, the detection field reads an identifier associated with the object and communicates the identifier to a computer system. The computer system determines the meaning of the interactor based upon its identifier and upon a semantic context in which the computer system is operating. One specific embodiment of the present invention is a bead interactor system that is a user playable sound and light show system. When an interactor bead is positioned within the detection space of the bead interactor system, a sound sequence begins and continues to play unaltered until the bead interactor is removed or other bead interactors are positioned within or removed from the detection space. Each bead represents a different sound and the row and column location of the bead within the detection space controls how the sound is modified, e.g., louder or softer, higher pitched or lower pitched, the period of play, etc. In some embodiments, the beads are translucent in order to conduct light from light sources located under each bead receptacle. The available sounds are determined not only by the identity of the beads and their positioning within the detection space and their associated states or orientations, but also by sound data stored in an accompanying computer readable medium. Hence a user can access a variety of sound collections by simply installing a different computer readable medium.

The invention discloses an electromagnetic excitation energy converter, a laser projection optical sound screen, and a synchronous display method thereof, and relates to the technical field of the image display and the acoustics. A hard or flexible laser projection optical screen is used as display and sound production of a sound production component, the electromagnetic excitation energy converter is used for pushing the screen or an auxiliary sound production board to vibrate the same, thereby forming an acoustic output; a low pitch enhancing unit, a middle pitch enhancing unit and high pitch enhancing unit are further provided, and the graceful tone quality capable of covering the full frequency bands can be played through the processing of a power amplifier and a frequency divider; andthe sound-picture synchronization technology can be achieved through a specific algorithm and software processing. Through the scheme disclosed by the invention, the vibration amplitude of the screencan be controlled to be imperceptible by the human eye while the screen is vibrated to excite the sound production, thereby guaranteeing that the display picture cannot be interfered, and a laser projection optical sound screen system scheme capable of displaying excellent picture and playing the beautiful sound is formed, the problem that the traditional box type sound group is large in volume,inconvenient for use, and separated in picture display and sound is solved, and the audio visual experience demand of the user is satisfied.

The present invention is directed to an audio signal reproducing system comprising a speaker system including at least two drive units or more which are divided or separated by frequency band. In this system (1), a signal processing unit (3) serves to add inverse characteristic to an inputted digital audio signal as correction characteristic of impulse response of speaker system (7). Thereafter, a D / A converter converts the digital audio signal thus obtained back into an analog signal. A power amplifier (5) amplifiers the analog signal thus obtained to deliver the analog signal thus amplified to the speaker system (7). The speaker system (7) outputs a signal at low frequency band that a LPF (8) has passed as sound wave of low pitched sound from drive surface (9a) of a low frequency drive unit (9), and outputs a signal at high frequency band that a HPF (10) has passed as sound wave of high pitched sound from drive surface (11a) of a high frequency drive unit (11).

The disclosed auto gain volume control method for communication comprises: pre-defining voice flow state to decide in transmission for AGC and smooth transition from high pitch to silence. This invention overcomes defects of volume and voice discontinuity, and fit for video conference.

Collapsible portable self-supporting shelter structures having from at least two component quad sections to seven or more component quad sections, which joined end to end form the width of the structure; and, said entire component sections optionally being joined side to side form a desired depth of the portable shelter. The resulting structure is a collapsible self-supporting prefabricated deployable shelter having a clear span interior without supporting columns.Some versions of the collapsible portable self-supporting shelter structure due to its configuration may optionally contain a floating hub which is a top element extending above the structure's standard exterior matrix frame. The floating hub forms a high pitch atop the shelter, which high pitch causes the fabric, which covers the matrix frame, to be maintained in a taut downward-sloping condition over the shelter top surface so no rain or snow collects in the fabric at the top of the shelter.

The invention provides an intelligent control device and control method for an automobile horn. The intelligent control device comprises an automobile horn key control, a global positioning system (GPS) positioning / timing system, an automobile horn, a geographical spatial database system, an automobile horn sounding control module, an intelligent horn control system and the like, wherein the intelligent horn control system recognizes section / time interval information intelligently and controls the sounding and the volume of the automobile horn according to whistle control time intervals and whistle area information set on related portions. According to the intelligent control device and control method, automatic control of silence, the low pitch and the high pitch of the automobile horn is achieved according to positions and current time as well as whistle control regulations specified by relevant departments; noise pollution generated by automobile horns due to disordered whistling, tweeter whistling and the like can be controlled effectively; and traffic violation acts can be eradicated fundamentally simultaneously.

The invention relates to the technical field of KTV accompaniment. Embodiments of the invention provide a singing accompaniment automatic adjustment method, a device and a KTV jukebox, wherein the singing accompaniment automatic adjustment method comprises the following steps: obtaining the original singing sound fundamental frequency of a song to be sung and the singing sound fundamental frequency of a singer; determining a pitch difference value of the singing sound fundamental frequency with respect to the original singing sound fundamental frequency; determining a tuning value to be adjusted for accompaniment music according to the pitch difference value; and adjusting a pitch of the accompaniment music based on the determined pitch value. Thus, the pitch of accompaniment music is individually adjusted according to the singing pitch of the singer, so that the singer whose vocal line cannot reach the high pitch or low pitch of the original singing can easily perform the song and notdeviate from the pitch, thus completing the singing with ease and pleasure, and enhancing the entertainment experience.

A small earphone or headphone which can produce a wide band acoustic output from a low-pitched tone to a high-pitched tone and can generate a body-sensitive vibration independent output or a body-sensitive vibration output synchronized with a music. The earphone or headphone is mounting a vibration actuator which is provided with a magnetic circuit including a permanent magnet, a yoke, and a plate for concentrating the flux of the permanent magnet, with a coil disposed in an air gap of the magnetic circuit, with a diaphragm fixed with the coil and being imparted with a driving force therefrom, and with a vibration transmitting section for supporting the magnetic circuit flexibly through a suspension comprising a flexible spring.

A power efficient, acoustical Helmholtz resonator foghorn including a plurality of electrical emitters, some of which are redundant, arrayed at one end of a blocked tube with a plurality of exhaust ports located therein surrounded by a standoff tubular member. The foghorn tuned to provide a high pitch thus providing a compact horn having an acoustical path capable of producing an exceptional wavelength in a generally concentric horizontal sound propagation the horn configurable for use as either a one-half mile or two mile marine navigational aid for offshore structures, buoys, and the like.

The invention relates to a transmission line damage prevention early warning system based on the multi-sensor fusion technology and belongs to the power grid protection technology field. The early warning system comprises an onsite power source unit, an information acquisition unit, an alarm unit and a main server used for carrying out remote operation, wherein the main server realizes remote information transmission with the information acquisition unit and the alarm unit through the wireless network, the information acquisition unit comprises a laser detector and a video monitor on a pole and a supersonic wave detector hung and fixed on a transmission line, and the alarm unit comprises a high pitch alarm device on the pole and a sound-light alarm device on the transmission line. According to the early warning system, integrated information acquisition is carried out by utilizing multiple types of sensors, accuracy for information acquisition of objects entering a dangerous zone is greatly improved, dangers are eliminated before generation, and effective early warning and driving effects for the objects entering the dangerous zone are realized.

A keyboard instrument such as an electronic piano comprises a keyboard structure that is basically identical to the keyboard structure of an upright piano except hammer assemblies and a struck portion attached to an action bracket. Each of the hammer assemblies is constituted by a hammer shank and a pseudo hammer, one of which is used to strike the struck portion having a multilayer structure including an elastic member (e.g., a plate spring) sandwiched between buffer materials. The elastic member has a prescribed number of striking areas in correspondence with keys arranged on a keybed, wherein the striking areas are gradually increased in weights and bends (or deflections) in a pitch descending order from higher pitches to lower pitches. Thus, it is possible to simulate weight factors and bends (or deflections) of strings actually struck by hammer felts in an upright piano.

Provided is an adjustment unit for guitar effector that is installed between input unit and output unit to adjust a volume and a tone based on the output signal by using a variable resistor in an analog circuit. The adjustment unit comprises one or more of a level part that adjusts a size of the output signal, a tone part that adjusts an amount of high-pitched sound and an amount of low-pitched sound, and a distortion part that adjusts a degree of distortion, one or more of the level part, the tone part and the distortion part are plural, and a switch comprising one or more of a level switch for selecting any one of the plurality of level parts, a tone switch for selecting any one of the plurality of tone parts, and a distortion switch for selecting any one of the plurality of distortion parts is installed.

A keyboard apparatus is provided, which is provided with plural keys 2 disposed in parallel, plural transmission members 10 rotating in response to a key pressing operation on the plural keys, and plural hammer members 11 rotating in accordance with rotation of the transmission member to give an action load to the key. The weights of the transmission members together with the weights of the hammer members bring the plural keys to the initial positions and initial loads of the keys are adjusted by the weights of the hammer members. Even if the weight of the hammer member is changed, the initial load of the key can be adjusted based on the weight of the transmission member. Therefore, when the weights of the hammer members are changed, the initial loads of the keys can be kept constant on the high-pitched tone side and the low-pitched tone side.

The invention discloses an active sound box, comprising a box body front shell and a box body rear shell, wherein a cavity is formed by the box body front shell and the box body rear shell; the upper part of the box body front shell is provided with a high pitch loudspeaker; the lower part of the box body front shell is provided with a low pitch loudspeaker; the box body rear shell is provided with a power amplifier; the box body front shell is provided with a plurality of inversed phase holes; the inversed phase holes are communicated with the cavity; the power amplifier comprises a power amplifier component and an aluminium dissipating plate; the power amplifier component is fixed on the aluminium heating plate which is fixed on the box body rear shell; and the power amplifier componentextends into the cavity. The active sound box has the advantages that when the active sound box is in operation, the power amplifier can generate great heat; part of the heat is dissipated through the aluminium heating plate, and the other part of the heat is dissipated into the cavity; and when the active sound box is in operation, the vibration of the low pitch loudspeaker drives the other partof heat generated by the power amplifier out through the inversed phase holes, thus further accelerating the heat dissipation of the power amplifier component.

The invention discloses a loudspeaker and a headset. The loudspeaker comprises a high pitch unit, a low pitch unit, passive vibrating diaphragm and a frame. The frame comprises a first frame body partand a second frame body part. The high pitch unit and the low pitch unit are stored in the first frame body part. The second frame body part is equipped with an upper frame and a plurality of side arms connected between the upper frame and the top end of the first frame body part. The plurality of side arms are spaced, so a plurality of through holes are defined among the top end of the first frame body part, the upper frame of the second frame body part and the plurality of spaced side arms. Part of sound saves produced by the high pitch unit and the low pitch unit are transmitted from the through holes. The other part of sound waves are absorbed and reflected by the passive vibrating diaphragm, thereby obtaining low frequency sound waves. The low frequency sound waves are transmitted from the through holes. The high pitch unit, the low pitch unit and the passive vibrating diaphragm are set in the frame, so a size of the loudspeaker is greatly reduced, a processing process is simplified, and the cost is reduced.

The invention relates to sound equipment and the low-pitch sound box of a television set, and particularly provides a closed multiple-cavity type low-pitch sound box and a television set with the built-in low-pitch sound box. The sound box comprises a box body, a loudspeaker, a first low-pitch radiator and a second low-pitch radiator. The loudspeaker is arranged in the box body. The interior of the box body is divided into a plurality of cavities by the vibrating diaphragm of the loudspeaker. The first low-pitch radiator and the second low-pitch radiator are disposed opposite to each other on the sidewall of any one cavity. All the other cavities, except the above cavity with the first low-pitch radiator and the second low-pitch radiator, are in the form of closed cavities. The vibrating diaphragm and the magnet of the loudspeaker are arranged in the box body and are not oriented towards the audition space. Therefore, no medium-and-high-pitch sound is directly radiated to the audition space, and it is ensured that the obtained low-pitch sound is pure and clear.

The invention relates to a depth-of-field analysis system for a pressure-resistant tank, and the system comprises a vertical piano component which comprises strings, an iron skeleton, a top plate, anda soundboard, and the strings are divided into three groups: high-pitch-area strings, middle-pitch-area strings, and low-pitch-area strings, wherein the high-pitch area strings are three strings pertone, the middle-pitch area strings are two strings per tone, and the low-pitch area strings are one string per tone; the high-pitch area strings and the middle-pitch area strings are both bare strings, and the low-pitch area strings are made by winding steel wires around copper wires. The iron skeleton is of a rectangular structure, and the soundboard is composed of a resonance board, a wood aiding board, a soundboard frame and a string code. And the parameter extraction equipment is connected with the pressure-resistant tank identification equipment and is used for extracting the depth of field of the pressure-resistant tank target in the instant sharpening image and sending a distance over-close signal when the depth of field is less than or equal to a preset depth of field threshold value, otherwise, sending a distance reliable signal. According to the invention, chemical hidden dangers and explosion hidden dangers brought to piano equipment by the pressure-resistant tank are eliminated.

Disclosed herein is an apparatus for providing 3D sound through plural-channel speakers. The apparatus includes a stereo channel virtual speaker generation device for performing spreading of low-pitch ranges and high-pitch ranges on input left and right channel signals, performing spreading of sound images and preservation of front sound images using the high-pitch range-spread signals, and outputting the sums of left and right processing results; a multi channel virtual speaker generation device for performing spreading of low-pitch ranges and high-pitch ranges on input left front channel, right front channel, left surround channel and right surround channel signals, performing spreading of sound images using the high-pitch range-spread signals, performing preservation of front sound images using front center channel and LFE channel signals, adjusting the gains of the processing results, and outputting the sums of left and right processing results, and an output device for outputting the signals to the plural-channel speakers.

The invention provides a wireless network sound system, which belongs to the technical field of sound and solves a problem of poor tone quality in the existing sound system. The wireless network sound system comprises an audio receiving and processing module, a control module, a wireless transmission module, a first loudspeaker box module and a second loudspeaker box. The audio receiving and processing module divides received audio signals into first audio signals and second audio signals, the first audio signals are output to the first loudspeaker box module, and the second audio signals are output to the wireless transmission module and transmitted to the second loudspeaker box module through the wireless transmission module. The first loudspeaker box module plays the first audio signals, and the second loudspeaker box module plays the second audio signals. The wireless network sound system divides the received audio signals into high pitched signals or middle pitched signals and mega bass signals and outputs the high pitched signals or middle pitched signals and the mega bass signals to the first loudspeaker box and the second loudspeaker box respectively, thereby enabling users to experience perfect stereo hearing effect.

The all-pitch four-chord Huqin with integrated treble, mediant and bass consists of rod, drum, bridge, chords, finger board and bow. The drum consists of outer drum, inner drum, sounding panel and sound window board, and the sounding panel and the sound window board are set on two ends of the outer drum. The inner drum has the upper part shared with the outer drum, part contacting the sounding panel and interval in the un-contact part. The present invention has all pitch of treble, mediant and bass, and thus rich expressive force.

The invention discloses a tone regulation and control circuit based on a NE5532 chip; the tone regulation and control circuit comprises the following parts: a pre-stage amplification circuit with twoinput ends respectively connected with a left channel audio signal and a right channel audio signal, the pre-stage amplification circuit comprises an amplifier U1A and an amplifier U1B, the amplifierU1A and the amplifier U1B are integrated in the NE5532chip, and respectively are used for amplifying the left channel audio signals and the R channel audio signals; a tone control circuit with two input ends respectively connected with output ends of the amplifier U1A and the amplifier U1B, the tone control circuit is used for respectively adjusting low pitch, middle pitch and high pitch for the two paths of audio signals amplified by the amplifier U1A and the amplifier U1B; a volume adjusting circuit used for adjusting volumes of the two paths of audio signals. The tone regulation and controlcircuit can better amplify, rectify and filter sounds and make fidelity treatment, and can remove unnecessary interferences, thus further obtaining better sound quality.

A keyboard instrument such as an electronic piano comprises a keyboard structure that is basically identical to the keyboard structure of an upright piano except hammer assemblies and a struck portion attached to an action bracket. Each of the hammer assemblies is constituted by a hammer shank and a pseudo hammer, one of which is used to strike the struck portion having a multilayer structure including an elastic member (e.g., a plate spring) sandwiched between buffer materials. The elastic member has a prescribed number of striking areas in correspondence with keys arranged on a keybed, wherein the striking areas are gradually increased in weights and bends (or deflections) in a pitch descending order from higher pitches to lower pitches. Thus, it is possible to simulate weight factors and bends (or deflections) of strings actually struck by hammer felts in an upright piano.

Disclosed herein is a micro speaker capable of having a high-pitched sound speaker unit and a low-pitched sound speaker unit and allowing the respective speaker units to clearly reproduce an inherent sound without interference. The micro speaker for converting an electrical signal into an acoustic signal includes: a high-pitched sound speaker unit disposed in an outer case; and a low-pitched sound speaker unit disposed in the outer case together with the high-pitched sound speaker unit, wherein the high-pitched sound speaker unit and the low-pitched sound speaker unit are disposed in the outer case so that a high-pitched sound vibrating plate of the high-pitched sound speaker unit and a low-pitched sound vibrating plate of the low-pitched sound speaker unit have directions opposite to each other.

The invention provides an earphone capable of automatically adjusting volume and a method for automatically adjusting the volume of the earphone and belongs to the field of earphones. The earphone capable of automatically adjusting the volume comprises an automatic volume adjusting module and a wireless module, wherein the wireless module is connected with audio equipment, and the automatic volume adjusting module is used for automatically acquiring an external noise signal and controlling a loudspeaker of the earphone to change the volume in real time. The method for automatically adjusting the volume of the earphone has the advantages that different voice registers are set, voice register matching is carried out on the external noise signal, the external noise signal is compared with a high pitch threshold and a low pitch threshold of the external noise signal in the range of the voice register, automatic increase and decrease of the volume of the loudspeaker are realized, control is accurate, user experience is better, and popularization is facilitated.