Abstract: A computer-implemented method for providing a dialog with a user, the method comprising the steps of: (a) creating (501) dialog's plot scenario as a narrative graph structure containing the dialogs; (b) assigning (502) coefficients of dialog transitions maps to narrative graph nodes; (c) providing (503) speech input for recognition in a given context and dialog phase represented by current narrative graph node; (d) applying (504) algorithm for updating dialog coefficients based on user's speech or user's other behavior; (e) applying (505) at least one fuzzy logic algorithm which using user speech, and other coefficients on the transition map, determines transition to another narrative graph node (phase of a dialog or a plot), or updates a position on the transition map continuing the dialog in the same narrative graph node (f) determining (507) a response based on coefficients of the narrative graph; (g) repeating steps (c) to (f) for a particular narrative graph node until a transition is decided in step (e)

Abstract: A vehicle comprises electric motor, generator of simulated engine sounds, decider of whether or not to generate simulated engine sounds and controller of the level of simulated engine sounds. The controller smoothly increases level of simulated engine sounds upon decision of sound generation on detection of pedestrian, crosswalk, narrow road, or road with no sidewalk. The decider is responsive to vehicle navigation system, or ETC, or camera of EDR. EDR records the decision as circumstantial evidence. The decision may be optionally possible, but is forcibly made upon necessity. Simulated engine sounds can be greater than, or equal to, or less than real engine sounds. The controller makes a soft peak of simulated engine sound upon brake or accelerator operated. Balance of simulated engine sounds among front, rear, right and left of vehicle is changeable in response to shift lever or blinker lever operation. The decision is visually indicated inside vehicle.

Abstract: A movement actuated tone effects system is provided for manipulating the electrical signal of an electric instrument by moving the electrical instrument in relation to a set of reference axes. A movement actuated tone effects unit is positioned within the electric instrument or within an effects cartridge attached to the electric instrument via a cartridge receiver. The movement actuated tone effects unit includes a motion sensor unit, a processor, a tone effects circuit, and a power source, wherein the motion sensor unit measures the motion of the electric instrument and generates electrical signals directed to the processor. The processor analyzes the electrical signals, determines the appropriate tone effect to apply, and then directs the tone effects circuit to produce the desired tone effect. The movement actuated tone effects unit may further include an integrated speaker, a signal converter, a transmitter, and a device terminal.

Abstract: Provided is a sound generating device (20) for a vehicle, including: a plurality of pressure sensors (21a to 21d) for detecting air pressures of an air intake sound of an engine (12) and outputting the air pressures as sound pressure signals; a signal processing unit (24) for performing processing of changing the sound pressure signals in accordance with a driving condition of a vehicle (10); and loudspeakers (28a and 28b) for outputting the sound pressure signals as the air intake sound of the engine (12). Then, the plurality of pressure sensors (21a to 21d) are provided at an interval in a circumferential direction of an outer periphery of an air intake duct (15) at positions in a vicinity of an air flow meter (18) on an air cleaner (16) side with respect to a center of the air intake duct (15), the air intake duct (15) connecting the air cleaner (16) to a throttle body (17).

Abstract: The present invention relates to a bass enhancement system comprising a bass substitution filter with variable gain and variable band width, wherein said variable gain and variable bandwidth at least partly depends on characteristics of an input signal. The present invention further relates to a bass enhancement system according to the above, further comprising a hearing compensation filter and a loudspeaker bass response compensation filter, wherein said input signal is coupled to said hearing compensation filter, the output of which is coupled to said loudspeaker bass response filter, the output of which is coupled to said bass substitution filter. The present invention further relates to a method of enhancing bass perception comprising boosting a reproducible bass frequency band in accordance with characteristics of signal content in a substantially non-reproducible bass frequency band.

Abstract: A digital version of both amplitude and phase of a received optical is developed by employing direct differential detection in conjunction with digital signal processing. The signal is split into three copies. An intensity profile is conventionally obtained using one of the copies. Phase information is obtained by supplying each remaining copy to a respective one of a pair of optical delay interferometers that have orthogonal phase offsets, followed by respective balanced intensity detectors. The output of each of the balanced intensity detectors, and the intensity profile, are each converted to respective digital representations. Signal processing is used to develop the phase information from the digital representations of the output of the balanced intensity detector outputs.

Abstract: A tone effects system for use with electric instruments that allows for reduced or eliminated signal loss before sound effects are applied. A cartridge receiver and a changeover switch are integrated into the body of a desired electric instrument, while an effects cartridge is attached to the electric instrument via the cartridge receiver. The cartridge receiver provides electronic connections between the electric instrument and the effects cartridge, while the changeover switch is used to direct the electronic signal of the electric instrument through the effects cartridge. The effects cartridge provides an effects circuit for manipulating the received electronic signal, as well as an at least one effects control for adjusting the extent to which the effect is applied to the electronic signal. As the effects cartridge is attached to the electric instrument, the at least one effects control is readily accessible while the electric instrument is being played.

Abstract: The present invention provides methods and systems for digitally processing audio signals in broadcasting and/or transmission applications. In particular, the present invention includes a pre-transmission processing module which is structured and configured to generate a partially processed signal. A transmitter is then structured to transmit or broadcast the partially processed signal to a receiver, where the signal is then fed to a post-transmission processing module. The post-transmission processing module is structured and configured to further processes the signal based upon, for example, the listening environment, profile(s), etc. and generate a final output signal.

Abstract: An audio effects chain sequencing apparatus alters the sequence of effects units in an effects chain so that different sequences of effects units can be connected. In one example the audio effects chain sequencing apparatus can have an external input port and an external output port, at least two component ports each having an internal input port and an internal output port, where the at least two component ports receive an input from the external input port, transfer that input in a component sequence to the component ports, and transfer the input to the external output port at the end of the component sequence and having a sequence selection module which selects the component sequence in which the at least two component ports transfer the input.

Abstract: The present invention relates to a control method of a D/A converter, a D/A converter, a control method of an A/D converter, and an A/D converter that can suppress an existing n-th harmonic without using a large-scale circuit, such as a bootstrap. A D/A converter (10) of the present invention is a D/A converter (10) that can suppress the generation of an existing n-th harmonic (n is an integer of 2 or more) of an analog output signal. The D/A converter (10) includes a D/A conversion unit (11) that converts an input digital signal into an analog signal and a control unit (12) that arbitrarily controls the timing of the sampling phase and the integral phase of the D/A conversion unit (11). The D/A conversion unit (11) is configured to generate an arbitrary n-th harmonic and superimpose the arbitrary n-th harmonic on an analog output signal including the existing n-th harmonic.

Abstract: For reproducing sound in a rectangular room in association with a video playback screen (10), from audio signals of the kind comprising at least three main channels (2, 3, 4) and a bass effects channel (1), at least five loudspeakers (11, 12, 13, 14, 15) are used that are specialized for reproducing audio frequencies lower than 120 Hz, four of which (11, 13, 14, 15) are arranged in four respective corners of the room and at least one of them (12) is arranged in the proximity of the screen. The two loudspeakers (14, 15) arranged in the corners furthest away from the screen receive either a signal constituted by the sum of the signals for the other loudspeakers with polarity inversion, with individual delays, and with lowpass filtering, or else a signal coming from a microphone (23, 25) arranged in the immediate proximity of each of the two loudspeakers (14, 15) concerned, the microphone signal being inverted in polarity and lowpass filtered.

Abstract: A system includes a controller for receiving first and second signals representative of a load on an engine, and generating based on the signals. Harmonic scaling elements generate a scaled version of a received engine harmonic signal. Each harmonic scaling element includes a harmonic specific mapping element for mapping the control parameter to a harmonic specific scaling factor. Some of the harmonic specific scaling factor values of the harmonic specific mapping element are mapped to control parameter values associated with a negative load on the engine, and some are mapped to control parameter values associated with a positive load on the engine. The control parameter values associated with the negative load are derived from the first signal, and control parameter values associated with the positive load are derived from the second signal. An adjustable gain element applies the harmonic specific scaling factor to the received engine harmonic signal.

Abstract: A system and method may be configured to reconstruct an audio signal from transformed audio information. The audio signal may be resynthesized based on individual harmonics and corresponding pitches determined from the transformed audio information. Noise may be subtracted from the transformed audio information by interpolating across peak points and across trough points of harmonic pitch paths through the transformed audio information, and subtracting values associated with the trough point interpolations from values associated with the peak point interpolations. Noise between harmonics of the sound may be suppressed in the transformed audio information by centering functions at individual harmonics in the transformed audio information, the functions serving to suppress noise between the harmonics.

Abstract: In some implementations, a user can specify an audio control curve for an audio track. The audio track can include an audio signal that is sampled at a specified rate. The audio control curve can be used to generate an audio control signal that can be sampled at the same rate as the audio signal. The audio signal and the audio control signal can be combined to produce sample-accurate adjustments of the audio signal. In some implementations, the audio control curve can correspond to gain adjustments for the audio signal. In some implementations, the audio control curve can be used to adjust the amplitude of the audio signal at particular frequencies. The audio control curve can be used to adjust treble or bass levels during the playback of an audio track, for example.

Abstract: A method for artificially reproducing an output signal of a non-linear time invariant system includes the steps of inserting an input signal of exponential sine sweep type in the non-linear time invariant system, acquiring an output signal of the non-linear time invariant system corresponding to the input signal, obtaining a mathematical function that characterizes the non-linear time invariant system on the basis of the output signal and applying the mathematical function to a further signal to obtain a still further signal which reproduces the output signal that would be obtained from the non-linear time invariant system if it were driven by the further signal.

Abstract: This document describes techniques and apparatuses for implementing a transparent display device. A transparent display device includes a transparent or translucent screen to render images on the screen, and to render virtual objects that appear to be in a three-dimensional (3D) space behind the screen. The transparent display device also includes a hand tracker to sense movement of a user's hands to interact with one or more of the virtual objects, and to generate 3D-input based on the movement. The transparent or translucent screen enables the user to see the user's hands behind the screen as the user's hands interact with the one or more virtual objects. The transparent display device is controlled to modify the rendering of the images on the screen or the virtual objects behind the screen based on the 3D-input.

Abstract: A system, method and apparatus in the field of signal processing with particular applications to the specialized field of audio signal processing as it is used in the production or performance of music that is adapted and/or configured to mitigate or attenuate unwanted signals during a switching process between an effects apparatus and a signal bypass.

Abstract: According to the invention, a method for providing audio to a user is disclosed. The method may include determining, with an eye tracking device, a gaze point of a user on a display. The method may also include causing, with a computer system, an audio device to produce audio to the user, where content of the audio may be based at least in part on the gaze point of the user on the display.

Abstract: A system and method may be configured to reconstruct an audio signal from transformed audio information. The audio signal may be resynthesized based on individual harmonics and corresponding pitches determined from the transformed audio information. Noise may be subtracted from the transformed audio information by interpolating across peak points and across trough points of harmonic pitch paths through the transformed audio information, and subtracting values associated with the trough point interpolations from values associated with the peak point interpolations. Noise between harmonics of the sound may be suppressed in the transformed audio information by centering functions at individual harmonics in the transformed audio information, the functions serving to suppress noise between the harmonics.

Abstract: Embodiments of the invention provide a system, apparatus and methods for underwater voice communication between a diver and an underwater electronic device. In many embodiments, the system includes a dive computer which generates audio signals corresponding to spoken messages and a mouthpiece apparatus having an acoustic transducer that conducts sound via conduction through the diver's teeth and skull to the cochlea so as to allow the diver to hear the messages and other sounds and a microphone for sensing the diver's voice. The mouthpiece is adapted to be easily attached to portions of a SCUBA or other underwater breathing apparatus. It may also be attached or integral to a snorkel or similar apparatus.

Abstract: A method for encoding and decoding a digital audio signal composed of an original right-hand signal (SDO) and an original left-hand signal (SGO). The method combines the original right-hand signal (SDO) and the original left-hand signal (SGO) to obtain a single combined signal (SC), encodes the combined signal (SC) using a standard encoder to obtain a compressed combined signal (SCC), and decodes the compressed combined signal (SCC) using a standard decoder (8) to obtain a decompressed combined signal (SCD). After decoding, the method generates a reconstructed right-hand signal (SDR) and a reconstructed left-hand signal (SGR) from the decompressed combined signal (SCD), which are de-correlated from each other. Also, a treble-generating module enables the high-frequency component (SHF) of the right-hand (SDR) or left-hand (SGR) signals to be recreated, which signals had been deleted as a result of the compression.

Abstract: An exposure unit includes a lens group having a plurality of lenses arrayed in a first direction and an element array which is arranged to face the lens group and includes a plurality of organic EL elements arrayed in parallel with the first direction on a substrate, a drive circuit including a plurality of TFT circuits for controlling luminance per unit time of the organic EL element is arranged on the substrate, and the TFT circuit controls the luminance of the organic EL element based on a signal created by an area gray scale method.

Abstract: A sound image localization control apparatus includes: a distributing unit configured to produce first and second audio signals which have a time difference, from an input audio signal, and configured to supply the first audio signal to one of a plurality of speakers; and a virtual-sound source processing unit configured to produce a virtual-sound source signal for localizing a sound source at a virtual sound source position in a space where the plurality of speakers are disposed, which is to be supplied to the one of the plurality of speakers, based on the second audio signal.

Abstract: Amplifier (6) for a wireless receiver, the amplifier comprising a voltage amplifier module having a voltage gain switchable between a first voltage gain value and a second voltage gain value higher than the first gain value, and a resistance module having a resistance switchable between a first resistance value and a second resistance value higher than the first resistance value, an output of the voltage amplifier module being connected to an input of the resistance module, the amplifier further comprising a set of switches configured to set the voltage gain value and the resistance value, the amplifier being operable in:—a nominal mode of operation in which the voltage gain value is set to the second voltage gain value, the resistance value being set to the second resistance value, and—a high linearity mode of operation in which the voltage gain value is set to the first voltage gain value to improve linearity of the amplifier, the resistance value being set to the first resistance value to have the same rat

Abstract: A method and device for processing spur components associated with a received wireless signal are disclosed. In one embodiment, the method includes first selecting a sub-band of a spectral band of the received signal. The selected sub-band is scanned, and a detection routine is executed to detect a spur within the scanned sub-band having a peak magnitude above a predetermined threshold. The spur frequency is determined, and the spur may be removed by a cancellation unit based on the determined frequency. The method also includes tracking the frequency of the spur to ensure continued suppression over time and under dynamic conditions.

Abstract: A computer-implemented method for beam tracing, wherein a set of beams is a representation of a physical wave phenomenon, the method comprising: receiving information regarding a beam and potentially intersecting objects; executing beam-triangle intersection tests; discarding elements, for which an intersection test is negative; dividing the beam into smaller partial beams; providing data for parallel processing; discarding of triangles with respect to partial beams; dividing the partial beams into smaller partial beams; approximating the smaller partial beams with rays; for each ray finding the closest triangle if such a triangle exists; creating delimited smaller partial beams; selectively applying merging of smaller partial beams previously delimited.

Abstract: Provided is a method and apparatus for reproducing a three-dimensional (3D) sound field. A method of reproducing a 3D sound field may determine a control region based on a wavelength of an excitation frequency, set, based on a loudspeaker array, at least one candidate control point in the control region, and determine a non-uniform control point corresponding to a non-uniform loudspeaker.

Abstract: In a method for outputting music information in a vehicle by way of an audio system having loudspeakers in the front area and rear area of the vehicle, the behavior of the vehicle is determined by use of an acceleration sensor responding to longitudinal accelerations. The loudspeakers arranged in the direction of the respective acceleration are at least preferably activated.

Abstract: An RPM signal representing a current RPM of a vehicle engine is received. An instant magnitude and an instant phase are determined for each of N harmonics of a target engine sound based on the RPM signal. The instant magnitude and the instant phase are each smoothed to generate a smoothed harmonic magnitude and a smoothed harmonic phase for each of the N harmonics. A magnitude perturbation signal and a phase perturbation signal are generated for each of the N harmonics. An individual harmonic signal is also generated for each of the N harmonics based, at least in part, on the smoothed harmonic magnitude, the magnitude perturbation signal, the smoothed harmonic phase, and the phase perturbation signal. The individual harmonic signals are summed to generate an engine harmonic enhancement signal, and the engine harmonic enhancement signal is transduced to acoustic energy.

Abstract: Systems, methods, apparatus, and articles of manufacture to provide for low-latency delivery and playback of audio are disclosed. In one embodiment, an example audio system includes multiple playback devices including a primary device and one or more secondary devices, whereby, the primary device establishes and controls a peer-to-peer network that connects, wirelessly or wired, to each of the satellite devices. An example audio device contains a channel selector, a control interface, and an audio interface. In some embodiments the control interface is used to transmit control information to another device on a first frequency channel, and the audio interface is used to transmit audio information to another device on a second frequency channel.

Abstract: Provided is an apparatus, method and computer-readable medium generating a vertical direction virtual channel that may apply a vertical direction spectrum shape to a source signal, and generate a vertical direction virtual speaker signal by adjusting a gain with respect to a signal in which the vertical direction spectrum shape is applied, based on virtual speaker direction information.

Abstract: Methods and systems for processing an audio signal are provided. The method includes generating a pseudorandom sequence and generating at least one reciprocal of the pseudorandom sequence such that the at least one reciprocal is substantially decorrelated with the pseudorandom sequence. The pseudorandom sequence and the at least one reciprocal form a set of sequences. The method further includes convolving the audio signal with the set of sequences to generate a corresponding number of output signals and providing the number of output signals to a corresponding number of loudspeakers.

Abstract: A sound effect data generating apparatus has a starting point setting portion, an endpoint setting portion, a travel point defining portion and a data generating portion. The starting point setting portion and the endpoint setting portion set a starting point and an endpoint specified by position information, respectively. The travel point defining portion sequentially defines a point which is situated on a line connecting between the set starting point and the set endpoint and is specified by position information, as a travel point in accordance with progression of reproduced tone signals. The data generating portion determines a value of at least one parameter on one sound effect which is to be added to the tone signals on the basis of the position information of the defined travel point, the set starting point and the set endpoint, and generates sound effect data in accordance with the determined parameter value.

Abstract: A device and methods are provided for a guitar amplifier. In one embodiment, an amplifier includes an overdrive shaping circuit including one or more elements for harmonic shaping of a received signal. The amplifier may also include a power amplifier circuit configured to receive the harmonic shaped signal from the overdrive shaping circuit, wherein the power amplifier circuit includes a switchmode amplifier to amplify the harmonic shaped signal includes one or more elements to increase the output impedance of the switchmode amplifier. An output of the amplifier can output a signal with desired harmonic shaping and a dynamic response.

Abstract: Signal processing section of a terminal converts acquired audio signals of a plurality of channels into frequency spectra set, calculates sound image positions corresponding to individual frequency components, and displays, on a display screen, the calculated sound image positions results by use of a coordinate system having coordinate axes of the frequency components and sound image positions. User-designated partial region of the coordinate system is set as a designated region and an amplitude-level adjusting amount is set for the designated region, so that the signal processing section adjusts amplitude levels of frequency components included in the frequency spectra and in the designated region, converts the adjusted frequency components into audio signals and outputs the converted audio signals.

Abstract: Methods, systems, and computer program products for simulating propagation of sound in a static scene can be operated for pre-computing a transfer operator for simulating results of sound reflection within a modeled scene, simulating distribution of sound energy from a sound source positioned within the scene, applying the transfer operator to the distribution of sound energy from the sound source to compute simulated sound at a plurality of points within the scene, and simulating collection of sound energy from the plurality of points within the scene to a listener positioned within the scene.

Abstract: Various embodiments relate to a systems and methods for downloading one or more effects to an effects unit. One or more effects may be received. On an effects unit. Audio signals for the one or more effects may be processed based on instructions for processing the audio signals received with the one or more effects. For each subsequent effect received on the effect unit, the processing of the audio signals may be reprogrammed. The one or more effects may be transmitted for output from the effects unit.

Abstract: An audio apparatus is suitable for generating crowd sounds from an audio signal is disclosed in which the apparatus comprises modulation means operable to modulate a noise signal in response to the audio signal to generate a modulated noise signal, and diffusion delay means. The diffusion delay means is operable to apply a series of two or more delay operations, the input signal to a first such delay operation in the series being the modulated noise signal, and input to each subsequent delay operation in the series being the output signal generated by a preceding delay operation. Each delay operation comprises modifying that operation's input signal by the addition of a delayed version of that operation's input signal.

Abstract: A method of playing a digital audio signal at a speed different from that at which it was recorded. The method comprises: playing a first segment of the signal; skipping to a second segment that is not contiguous with the first segment; and playing the second segment, wherein at least one of the first and second segment is played at a rate different from the rate at which it was recorded.

Abstract: The present disclosure is directed to a set of interactive coasters. Specifically, it is an object of the present disclosure to provide a set of musically interacting coasters which harmonize when placed in proximity to one another.

Abstract: Among other things, techniques and systems are disclosed for detecting musical structures, such as downbeats. In one aspect, a method performed by a data processing device includes receiving an input audio signal. The method includes detecting a meter in the received audio signal. Detecting the meter includes generating an envelope of the received audio signal; generating an autocorrelation phase matrix having a two-dimensional array based on the generated envelope to identify a dominant periodicity in the received audio signal; and filtering both dimensions of the generated autocorrelation phase matrix to enhance peaks in the two-dimensional array. The meter represents a time signature of the input audio signal having multiple beats. Additionally, the method includes identifying a downbeat as a first beat in the detected meter.

Abstract: A motion signal processing technique modifies digital audio recordings in order to restore a sense of motion, liveliness, and spatial dynamics. The technique compensates for the static presentation of sound created by modern recording and sound synthesis techniques and common modern playback equipment such as headphones and ear buds in order to create a more natural, immersive, and enjoyable listening experience.

Abstract: Disclosed herein are a method and device for generating sound effects. Features of an input pattern are detected. A sound that reflects the input pattern is synthesized and played.

Abstract: In some embodiments, a virtual bass generation method including steps of: performing harmonic transposition on low frequency components of an input audio signal (typically, bass frequency components expected to be inaudible during playback of the input audio signal using an expected speaker or speaker set) to generate transposed data indicative of harmonics (which are expected to be audible during playback, using the expected speaker(s), of an enhanced version of the input audio which includes the harmonics); generating an enhancement signal in response to the transposed data; and generating an enhanced audio signal by combining (e.g., mixing) the enhancement signal with the input audio signal. Other aspects are systems (e.g., programmed processors) and devices (e.g., devices having physically-limited bass reproduction capabilities, such as, for example, a notebook, tablet, mobile phone, or other device with small speakers) configured to perform any embodiment of the method.

Abstract: A band broadening apparatus includes a processor configured to analyze a fundamental frequency based on an input signal bandlimited to a first band, generate a signal that includes a second band different from the first band based on the input signal, control a frequency response of the second band based on the fundamental frequency, reflect the frequency response of the second band on the signal that includes the second band and generate a frequency-response-adjusted signal that includes the second band, and synthesize the input signal and the frequency-response-adjusted signal.

Abstract: A sound reproduction apparatus comprising a loudspeaker bar having a plurality of loudspeakers. A loudspeaker bar controller coupled to the loudspeaker bar for processing audio data for the plurality of loudspeakers, the loudspeaker bar controller comprising a spatial enhancement/virtualization system for receiving a surround channel of audio data and processing the surround channel of audio data with a spatial generation/virtualization filter, wherein a left stereo channel of audio data and a right stereo channel of audio data are not processed with the head related transfer function filter. Bass is enhanced for small speakers which are not able to produce bass frequencies.

Abstract: An audio signal decoder for providing an upmix signal representation in dependence on a downmix signal representation and an object-related parametric information includes an object separator configured to decompose the downmix signal representation, to provide a first audio information describing a first set of one or more audio objects of a first audio object type and a second audio information describing a second set of one or more audio objects of a second audio object type, in dependence on the downmix signal representation and using at least a part of the object-related parametric information.

Abstract: A system and method for modulating the sound pressure that is output from an audio transducer is disclosed. In one embodiment, the method includes receiving an audio signal and placing the audio signal across a voice coil of the transducer. In addition, a voltage is applied across a field coil of the transducer, the field coil being separate from the voice coil. And the voltage that is applied across the field coil is adjusted so as to modulate the sound pressure output from the audio transducer.

Abstract: Provided is an apparatus and method of encoding and decoding multiple channel signals based upon phase information and one or more residual signals.

Abstract: A method for operating a voltage regulator controller, for use in a voltage regulator including coupled inductors, is provided as follows. A first signal is generated for driving a first switch of the voltage regulator. A second signal is generated driving a first switch of the voltage regulator. The voltage regulator determines whether a light-load condition exists. Upon determining the existence of a light-load condition, adjusting the phase difference between said first and second signals so that the first and second signals are approximately in-phase.