Abstract: A speaker horn with rotatable radiation characteristics has a base body in the form of an opening funnel with a rotationally symmetrical inner wall in the radiation area and an insert mounted so that it can rotate relative to the base body. The insert covers part of the rotationally symmetrical inner wall acoustically and causes the rotatable radiation characteristic of the speaker horn.

Abstract: According to one embodiment, a method, computer system, and computer program product for modulating external sounds to reflect the acoustic effects of virtual objects in a mixed-reality environment is provided. The present invention may include creating a knowledge corpus, recording a sound effect occurring externally to a mixed-reality environment experienced by a user operating the mixed-reality device; identifying one or more objects within the mixed-reality environment, including at least one virtual object; modulating the sound effect based on the knowledge corpus to simulate one or more acoustic effects of the one or more objects within the MR environment; and playing the modulated sound effect to the user.

Abstract: An acoustic source positionable on a platform in an operating environment includes a pendulum arm and a transducer positioned on the pendulum arm. The combined arm and transducer have a natural frequency of oscillation dictated by gravity and a pendulum length. A signal generator is electrically joined to the transducer. The signal generator has a preferred frequency of operation at the natural frequency of the pendulum.

Abstract: A programmable signal generator and radio controller for providing dispatch paging tone out frequencies to first responders and other selected areas. The signal generator is capable of performing tone-outs to various first responders and being cross compatible with prior and future evolutionary systems. The signal generator uses plain-text console interface and plain-text tone-out parameter definitions allowing programming without special software, apps, or Internet connectivity. The signal generator is capable of controlling operational functions of connected radio transceiver equipment including initiating and terminating RF transmission, selecting radio channel or frequency, and monitoring operational status of the transceiver.

Abstract: This disclosure relates to speakers and more specifically to an array speaker for distributing music uniformly across a room. A number of audio drivers can be radially distributed within a speaker housing so that an output of the drivers is distributed evenly throughout the room. In some embodiments, the exit geometry of the audio drivers can be configured to bounce off a surface supporting the array speaker to improve the distribution of music throughout the room. The array speaker can include a number of vibration isolation elements distributed within a housing of the array speaker. The vibration isolation elements can be configured to reduce the strength of forces generated by a subwoofer of the array speaker.

Abstract: A pair of eyeglasses includes a lens support structure having an elongated cavity formed therein that defines an air plenum extending transversely across the lens support structure. Air blowers are situated at opposite axial ends of the lens support structure and generate pressurized air into the elongated cavity. A HEPA filter is situated within the elongated cavity. A plurality of orifices formed in a bottom surface of the lens support structure directs pressurized air from the elongated cavity into the space between the eyeglass lens and the eyes of a user to displace allergens. Electronic circuitry, including a battery and switch, is situated within the lens support structure and operates the blowers. A status indicator is situated on the lens support structure to provide a visual indication of the operational state of the blowers and condition of the battery.

Abstract: A vehicle includes a horn assembly disposed behind a grille. The horn assembly includes a coil configured to generate a magnetic field in response to a current, a first diaphragm connected to a first plunger, a second diaphragm connected to a second plunger, and a spring. The spring is connected to the first and second plungers such that oscillation is transferred from the first diaphragm to the second diaphragm through the spring in response to the magnetic field from the coil.

Abstract: A speaker system includes one or more rotating speakers (or speakers with rotating reflectors) that are synchronized in absolute angular position to another rotating speaker or synchronized to audio effects to generated by a signal processing system driving a stationary or rotary speaker. Knowledge of absolute angular position in a multi-rotor speaker array or signal processing system allows for control of rotary position to accomplish acoustic effects otherwise not possible, such as matched-velocity profiles with differential phase control and motion profiles that are not based on simple rotation.

Abstract: A driver circuit outputs a result of classifying and counting photons based on one or more energy levels to a column line. The driver circuit includes a multiplexer for receiving the result from a counter, a driving inverter for receiving a signal from the multiplexer and a power supply, and a switch connected between the power supply and an input terminal of the driving inverter.

Abstract: In a plain bearing for a steering spindle of a steering column for a motor vehicle having an inner ring for receiving and slidingly mounting the steering spindle, the inner ring is surrounded by an outer ring, and elastic intermediate pieces are arranged between the inner ring and the outer ring . A respective elastic intermediate piece holds the inner ring at the location of the intermediate piece at a spacing from the outer ring in relation to the radial direction in the unloaded state of the plain bearing and can be compressed in the case of a force which acts on the inner ring and is directed outwards in the radial direction, the inner ring bearing against the outer ring if a limiting value of the radial force is exceeded.

Abstract: This disclosure is directed to a sound recording arrangement comprising a sound recording arrangement and a method in the sound recording arrangement for amplifying sounds in a primary gaze direction of the user of the sound recording arrangement. The method comprises the actions of recording sounds arriving at a sound recording unit from objects in the field of view of the user, and recording a first set of images of the head and/or the eyes of the user, and determining a primary gaze direction of the user based on the first set of images, and amplifying sounds arriving in the primary gaze direction compared to sounds arriving from other directions.

Abstract: Exemplary embodiments are directed to a sound modification system and loud speaker system. The system may impose amplitude, frequency and delay modulation on a signal representing the output of an musical instrument or other sound source while also imposing a sense of movement of the sound to the listener and a periodic variation of the harmonic content of the sound. Further, the system may simultaneously amplify sound signals without the amplitude, frequency, delay and spatial sense of modulation or a different sense of modulation. The system combines a plurality of sound transducers, a plurality of amplifiers and signal processors to provide a flexible, portable and practical sound modification and amplification system.

Abstract: The present technology provides robust, high quality dereverberation of an acoustic signal which can overcome or substantially alleviate the problems associated with the diverse and dynamic nature of the surrounding acoustic environment. The present technology utilizes acoustic signals received from a plurality of microphones to carry out a multi-faceted analysis which accurately identifies reverberation based on the correlation between the acoustic signals. Due to the spatial distance between the microphones and the variation in reflection paths present in the surrounding acoustic environment, the correlation between the acoustic signals can be used to accurately determine whether portions of one or more of the acoustic signals contain desired speech or undesired reverberation. These correlation characteristics are then used to generate signal modifications applied to one or more of the received acoustic signals to preserve speech and reduce reverberation.

Abstract: One example embodiment increases perceived signal strength of a sound signal based on persistence of hearing. When the ear perceives a signal it takes a finite length of time to process it. During that time period the ear does not recognize input and is, in effect, “Turned Off”. In accordance with one aspect of the technology, these periods of “unheard” audio input are utilized so that they supplement the information which the ear sends to the brain. An exemplary system includes a switch, configured to route the audio alternatively to two signal paths—one which includes a delay circuit that delays that audio by an amount equal to the ear's persistence of hearing interval. The system also includes a signal combiner configured to combine outputs from the two signal paths, so as to provide the brain with a signal that it will perceive as being twice as loud as the original.

Abstract: A method of processing an audio input signal represented as digital samples to produce a stereo output signal (having a left field and a right field) such that said stereo signal emulates the production of said audio signal from a specified audio source location relative to a listening source location. An audio input signal is received. An indication of an audio source location relative to a listening source location (an indicated location) is received. A broadband response file for each of the left field and the right field is selected from a plurality of stored files derived from empirical testing, dependant upon said indicated location. The audio input signal is convolved with each of the selected left field response file and the selected right field response file. Apparatus for processing an audio input signal.

Abstract: A computer-implemented method and system are provided for profiling or analyzing audio data based on an audio parameter. The audio data is divided into audio data into segments. Each segment is characterized by the audio parameter in a defined range. Effects are selected according to the segments meeting criteria for the audio parameter of the effects. A media presentation is authored or generated using the selected effects.

Abstract: Psychoacoustic bass audio signal enhancement can be accomplished using a monotonic, asymmetric polynomial distortion. A non-linear process applies a monotonic, asymmetric polynomial distortion function that has continuous first and second derivatives to generate even and odd harmonics of missing fundamental frequencies. This polynomial distortion produces the desired psychoacoustic effect with a fairly rapid roll-off so as to avoid unpleasant aliasing. Moreover, the lack of first-order discontinuities prevents clicks or glitches.

Abstract: A method and apparatus of generating a sound field effect is provided. The sound field effect generating apparatus may generate a frequency coefficient that is frequency-transformed from a direct signal, may generate a reflection signal from the frequency coefficient, may generate an output signal using the frequency coefficient and the reflection signal, and may perform an inverse-frequency transform of the output signal.

Abstract: A system for inducing an effect in a raw audio signal comprises a computing device for receiving a first audio signal and a second audio signal from a signal source, and the second audio signal comprises the first audio signal induced with an effect. The system further comprises logic that parameterizes the effect in the second audio signal into an artificial neural network (ANN).

Abstract: A clipping detection device calculates an amplitude distribution of an input signal for each predetermined period, calculates a deflection degree of the distribution on the basis of the calculated amplitude distribution, and then detects clipping of a communication signal on the basis of the calculated deflection degree of the distribution.

Abstract: In an impulse response processing device, a waveform dividing part divides a waveform of an original impulse response into a plurality of blocks on a time axis. A time adjusting part performs a time adjustment to reduce a time difference between successive ones of the blocks. A waveform synthesizing part generates a waveform of a new impulse response by adding the blocks on the time axis after the time adjustment by the time adjusting part. Further, a windowing part performs a windowing process to multiply each block by a window function having a window width corresponding to a width of the block, a function value of the window function decreasing from a center to both ends of the block. The waveform synthesizing part generates the new impulse response using the blocks after the windowing process by the windowing part.

Abstract: A voice emphasizing device emphasizes in a speech a “strained rough voice” at a position where a speaker or user of the speech intends to generate emphasis or musical expression. Thereby, the voice emphasizing device can provide the position with emphasis of anger, excitement, tension, or an animated way of speaking, or musical expression of Enka (Japanese ballad), blues, rock, or the like. As a result, rich vocal expression can be achieved. The voice emphasizing device includes: an emphasis utterance section detection unit (12) detecting, from an input speech waveform, an emphasis section that is a time duration having a waveform intended by the speaker or user to be converted; and a voice emphasizing unit (13) increasing fluctuation of an amplitude envelope of the waveform in the detected emphasis section.

Abstract: A sensor is provided in a machine having a continuously variable transmission, for example, and the amount of force exerted by the machine against a load is sensed. Based on the sensed power, an appropriate audio signal is generated which simulates the sounds an operator would expect to hear when such force is applied with a machine having a conventional geared transmission. The sounds can include engine noises, as well as sounds associated with the flow of oil or other hydraulic fluids. In addition, the sounds can be generated from digitally pre-recorded audible data, or can be output based on calculated audible data. User controls are also provided to adjust the volume and frequency or pitch of the generated sounds.

Abstract: Improved techniques for presenting sound effects at a portable media device are disclosed. The sound effects can be output as audio sounds to an internal speaker, an external speaker, or both. In addition, the audio sounds for the sound effects can be output together with other audio sounds pertaining to media assets (e.g., audio tracks being played). In one embodiment, the sound effects can serve to provide auditory feedback to a user of the portable media device. A user interface can facilitate a user's selection of sound effect usages, types or characteristics.

Abstract: An electrical signal derived from an audio source is passed through an amplifier and is then divided into two discrete signal paths. The signal traveling along the first path travels through a high pass filter and is then split so that a portion is delayed and a portion passes through a harmonics generator so that the harmonics are advanced ahead of the delayed portion from the high pass filter. The split circuit is then combined in a summing amplifier. The second portion of the signal is also delayed before it also travels to the mixer. The combined signal is passed through an amplifier and then fed into an output transducer. The use of a delay both on the input signal and the portion of the signal which passed through the high pass filter output just before the summing amplifier enables the harmonics to not be masked by the lower frequencies, making the effect more apparent.

Abstract: Reverberation parameters for one or more positions of interest are derived from graphics data used for displaying a computer-generated environment. For each position of interest for which reverberation parameters are desired, environmental parameters including distances and the hardness of features in a range of interest and at points on cubemap faces are automatically determined from the graphics data. The environmental parameters are stored with the graphics data and associated with each position of interest. Upon rendering of the computer-generated environment, reverberation property set values usable by a reverberation engine are calculated or interpolated between predetermined values according to the environmental parameters.

Abstract: A method for generating and/or performing music in real time includes receiving one or more audio signals, receiving one or more virtual instrument trigger signals, and selecting one or more plug-ins and/or one or more virtual instruments. A processing scheme is selected from a set of operations. The received audio signals and instrument trigger signals are processed in real time as a function of the selected plug-ins, virtual instruments and processing scheme, and outputted in real time as music signals.

Abstract: A surround experience for headphones can be created using various techniques and tools. The described techniques and tools can be applied separately or in combination. For example, a surround experience can be created by splitting input audio channel signals into high-pass and low-pass signals. The low-pass signals can undergo cross-mixing and artificial reverberation. The artificial reverberation can apply different delay profiles to the low-pass audio signals. The high-pass and low-pass audio signals can be combined to generate output audio channel signals. A surround experience can be crated using a system comprising an input module, a crossover module, a channel cross-mixing module, a reverberation module, and an adder module.

Abstract: An apparatus for performing processing of an input acoustic signal to be reproduced by a loudspeaker, which generates a harmonic of a low pitch sound component equal to or lower than a predetermined low cutoff frequency, and generates a harmonic synthesized acoustic signal synthesizing the input signal with the harmonic. The apparatus generates an output acoustic signal which cuts off, from the harmonic synthesized acoustic signal, a low pitch sound component equal to or lower than the low cutoff frequency and a high pitch sound component equal to or higher than the high cutoff frequency. The apparatus sets a low and high cutoff frequencies in accordance with an output characteristic of a loudspeaker.

Abstract: The present invention discloses an audio extension system. The audio extension system comprises a permanent magnet; a holder having a concave portion for holding the permanent magnet; a tube disposed at a gap between a side of the permanent and a side of the concave portion of the holder for holding a coil surrounded a periphery of the permanent magnet and supported the coil to vibrate freely; and a conducting part, mounted at one end of the tube for vibration to a vibrating member disposed therein; wherein two ends of a conducting cable formed the coil are directly connecting to a jack of an earphone or a headphone of outputting an audio signal, and the conducting part on the audio signal outputted from the jack is conducting the vibration of the coil through the tube to output a sound from the vibrating member.

Abstract: A sound effect generation device for generating a sound effect corresponding to a physical interaction between objects in a virtual space in which a plurality of virtual objects coexists, includes interaction detection means for detecting an object on which the physical interaction occurs in the virtual space, mechanical quantity calculation means for calculating mechanical quantity acting on the object in accordance with the interaction using a mechanical model for determining, based on physics, behavior between the objects on which the physical interaction acts, and sound effect generation means for generating the sound effect caused in the object by the interaction using the calculated mechanical quantity.

Abstract: A method of processing an audio signal with a content is disclosed. The method comprises determining, based on an analysis associated with a missing fundamental phenomenon, a frequency region suitable for adding one or more harmonic tones of a fundamental tone, determining one or more spectral properties of the content within the frequency region, and adjusting operation of a function for adding harmonic tones based on the spectral properties. Corresponding computer program product, audio signal processing arrangement and electronic device is also disclosed.

Abstract: The invention is directed to a display and method for conducting sound system design. The display is configured to simultaneously show a sound system model comprising both audio components and sound environment components, a plurality of parameters and a graphic representation of a calculated sound system performance attribute. In response to receiving input from the user and without any additional user intervention, the display re-displays a newly-calculated sound system performance attribute such as, for example, a graphic representation in the sound system model of a sound path associated with a user-selected reflected sound identifier. A processor also simulates, based on the sound system configuration, the sound performance that a user would expect to hear positioned in an identified listening position of the sound system model.

Abstract: A method for reducing noise disturbance associated with an audio signal received through a microphone is provided. The method initiates with magnifying a noise disturbance of the audio signal relative to a remaining component of the audio signal. Then, a sampling rate of the audio signal is decreased. Next, an even order derivative is applied to the audio signal having the decreased sampling rate to define a detection signal. Then, the noise disturbance of the audio signal is adjusted according to a statistical average of the detection signal. A system capable of canceling disturbances associated with an audio signal, a video game controller, and an integrated circuit for reducing noise disturbances associated with an audio signal are included.

Abstract: Systems, methods, and computer program products are provided for producing audio and/or visual effects according to a correlation between reference data and estimated note data derived from an input acoustic audio waveform. Some embodiments calculate a pitch score as a function of a pitch estimate derived from the input waveform, a reference pitch, and a real-time-adjustable pitch gating window. Other embodiments calculate the pitch score as a function of pitch and timing estimates derived from the input waveform, reference pitch and note timing data, an adjustable rhythm gating window, and an adjustable pitch gating window. The audio and/or visual effects are produced according to the pitch score, and may be used to generate outputs (e.g., in real time) for affecting a live performance, an audio mix, a video gaming environment, an educational feedback environment, etc.

Abstract: The present invention provides a method and system for reducing power consumption of a sound processor. Aspects of the invention include providing a sound processor access to at least one register having a plurality of bits corresponding to sound operations capable of being performed by the sound processor; and allowing a host processor to write a value to at least a portion of the plurality of bits in the register during sound processing to selectively disable individual operations performed by the sound processor.

Abstract: The invention is directed to a display and method for conducting sound system design. The display is configured to simultaneously show a sound system model comprising both audio components and sound environment components, a plurality of parameters and a graphic representation of a calculated sound system performance attribute. In response to receiving input from the user and without any additional user intervention, the display re-displays a newly-calculated sound system performance attribute such as, for example, a graphic representation in the sound system model of a sound path associated with a user-selected reflected sound identifier. A processor also simulates, based on the sound system configuration, the sound performance that a user would expect to hear positioned in an identified listening position of the sound system model.

Abstract: Reverberation parameters for one or more positions of interest are derived from graphics data used for displaying a computer-generated environment. For each position of interest for which reverberation parameters are desired, environmental parameters including distances and the hardness of features in a range of interest and at points on cubemap faces are automatically determined from the graphics data. The environmental parameters are stored with the graphics data and associated with each position of interest. Upon rendering of the computer-generated environment, reverberation property set values usable by a reverberation engine are calculated or interpolated between predetermined values according to the environmental parameters.

Abstract: A scheme for stereo and multi-channel synthesis of inter-channel correlation (ICC) (normalized cross-correlation) cues for parametric stereo and multi-channel coding. The scheme synthesizes ICC cues such that they approximate those of the original. For that purpose, diffuse audio channels are generated and mixed with the transmitted combined (e.g., sum) signal(s). The diffuse audio channels are preferably generated using relatively long filters with exponentially decaying Gaussian impulse responses. Such impulse responses generate diffuse sound similar to late reverberation. An alternative implementation for reduced computational complexity is proposed, where inter-channel level difference (ICLD), inter-channel time difference (ICTD), and ICC synthesis are all carried out in the domain of a single short-time Fourier transform (STFT), including the filtering for diffuse sound generation.

Abstract: A method and apparatus for conditioning an audio input signal to enhance perception and reproduction of bass frequencies. Harmonics are generated and combined with a phase-shifted version of the audio input signal. Use of a controlled phase shift reduces or eliminates unwanted introduction of waveform asymmetry or D.C. offset.

Abstract: A reverberation processor includes a chain of absorbent all-pass filters and an absorbent delay line. The decay time can be precisely controlled by controlling the magnitude of the attenuation in the absorbent delay lines. Further, each absorbent delay line includes a low-pass filter for controlling the decay time at a particular high frequency.

Abstract: It is usual to utilize electric current filters for electroacoustic transducers, the filters are in general frequency mixers. Audio electric signals have a pulse response quality and excellent frequency adjustment. As for electroacoustic transducers, the transformation is not properly carried out for electroacoustic transducers. The electric pulses travel at the speed of the electrons whereas the membrane and its motor have a specific weight. The weight has a mechanical inertia preventing an instantaneous response to the electric effects. A method can modify at least one modulation of the original electric pulse into micro electrical phase shifts. The micro phase shifts are generated by impedance of the components. An apparatus has several components of similar type mounted in parallel, thereby forming a self-powered oscillator, energized by the original electric signal. The apparatus is mounted on the circuit powering the enclosure.

Abstract: Disclosed are apparatus and methods of enhancing digital audio signals after compression and decompression. The methods and apparatus include receiving a digital decompressed audio signal, harmonically enhancing the signal, adding warmth to the signal, and combining and frequency equalizing the harmonically enhanced audio signal and the warmth enhanced audio signal to provide a digital enhanced decompressed audio signal. The apparatus is preferably provided in software as instructions to a DSP. Adjustments are included within the software for varying levels of the harmonic enhancing and for varying levels of the frequency equalizing. Methods of distribution are disclosed which include providing the software free with the inclusion in the software of either a one-time use, a partial use, a partially enhanced audio signal use, or non-save adjustments, and selling the software for a price without including the one-time use, the partial use, the partially enhanced audio signal use, or the non-save adjustments.

Abstract: A high pass filter 32 having a cut-off frequency of 200 Hz and a cut-off response of +12 dB/OCT and a low pass filter 33 having a cut-off frequency of 400 Hz and a cut-off response steeper than ?24 dB/OCT are used to pick out components in a double overtone region of 200˜400 Hz of a bass musical instrument such as a base or a bass drum from an input audio signal. The component which is picked out is input to distortion applying means 34 having an input-output response which is a non-linear response having no point symmetry with respect to 0 point, thus applying a distortion to cause even-numbered overtone components to be produced. An output from the distortion applying means 34 and the input audio signal are summed in a summer 18 to be delivered. Natural tones which have boosted bass tones and which are free from impurity are obtained.

Abstract: An audio system includes a circuit (12) for processing an audio signal, the circuit (12) having an input (20) for receiving the audio signal and an output (26) for supplying an output signal. The circuit (12) further includes a harmonics generator (22) coupled to the input (20) for generating harmonics of the audio signal and an adding circuit (24) coupled to the input (20) as well as to the harmonics generator (22) for supplying a sum of the audio signal and the generated harmonics to the output (26). The harmonics generator (22) includes an integrator (34) for integrating the audio signal, and, coupled thereto, a resetting circuit (36) for resetting the integrator (34) at resetting times.

Abstract: A method for influencing, e.g., for decreasing, the treble reproduction of an audio signal for reproduction obtained from a received signal, the received field strength and reception quality of the received signal being evaluated and, as a function thereof, the transfer function of at least one filter unit that can be impinged upon by the audio signal being controlled, as well as a circuit assemblage or arrangement for performing such a method for the modification of treble reproduction, so that, among other things, reproduction of the interference may always be reliably concealed and so that no noticeable and/or irritating “flutter” effects may occur. The method may include processing of the output signals of at least two reception interference detectors, and processing of the received field strength may be accomplished respectively in at least one first processing branch operating at a first, e.g.

Abstract: In a signal generation circuit for a compound acoustic actuator that generates a sound and a vibration in response to a frequency of a signal input to the compound acoustic actuator, the signal generation circuit comprising a plurality of signal data stored in a memory to generate a plurality of signals having mutually different frequencies, the plurality of signals at least including a signal, a frequency of which is equal to a resonant frequency causing the compound acoustic actuator to generate the vibration, a synthesizing means to synthesize a plurality of drive signals in accordance with the plurality of signal data so as to cause the compound acoustic actuator to generate the vibration, and a sweeping means to sweep the plurality of drive signals, repeatedly.

Abstract: A method for processing an audio signal is provided that includes receiving an audio signal and integrating the audio signal with a selected one of a plurality of sound effects. The method also includes generating an output that reflects the integration of the audio signal and the selected sound effect. The output may then be communicated to a next destination.

Abstract: In a signal generation circuit for a compound acoustic actuator that generates a sound and a vibration in response to a frequency of a signal input to the compound acoustic actuator, the signal generation circuit comprising a plurality of signal data stored in a memory to generate a plurality of signals having mutually different frequencies, the plurality of signals at least including a signal, a frequency of which is equal to a resonant frequency causing the compound acoustic actuator to generate the vibration, a synthesizing means to synthesize a plurality of drive signals in accordance with the plurality of signal data so as to cause the compound acoustic actuator to generate the vibration, and a sweeping means to sweep the plurality of drive signals, repeatedly.

Abstract: A incoming-call tone generation device comprises: a first storage unit 1, for storing an effect calculation formula for incoming-call tone data; a second storage unit, for storing incoming-call tone data that consist of data for original sounds; a controller, for reading incoming-call tone data from the second storage unit and transmitting the data to a digital signal processor 4, and for controlling a D/A converter 5; the digital signal processor 4, for calculating an effect pattern and a sine wave using the calculation formula read from the first storage unit, and for performing an envelope process for the incoming-call tone data; the D/A converter 5, for converting, into analog data, digital incoming-call tone data obtained during the envelope process, and for outputting an analog incoming-call tone; and a loudspeaker 6 through which an analog incoming-call tone is released.