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| Number | Title | Issue Date |
| 7278733 | Sunglasses with removable sealing member Eyewear is disclosed for use in sports and the like which allows the wearer to attach a removable sealing member to prevent the ingress of particulate matter when active sports are engaged in which require both ventilation and sealing to keep dust, dirt and the like... | 10/09/2007 |
| 7191022 | Public addressing system A sound-amplification apparatus comprises: an acoustic signal source for outputting an acoustic signal; an amplified sound source for receiving the acoustic signal from the acoustic signal source and radiating an amplified sound; a control sound source provided in a... | 03/13/2007 |
| 7149314 | Reverberation processor based on absorbent all-pass filters 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... | 12/12/2006 |
| 7139402 | Sound reproduction device A sound reproduction device of the present invention includes: a first loudspeaker; a second loudspeaker; a first loudspeaker drive section for driving the first and second loudspeakers, the first loudspeaker drive section drives the first and second loudspeakers at... | 11/21/2006 |
| 7083276 | Sunglasses with removable sealing member Eyewear is disclosed for use in sports and the like which allows the wearer to attach a removable sealing member to prevent the ingress of particulate matter when active sports are engaged in which require both ventilation and sealing to keep dust, dirt and the like... | 08/01/2006 |
| 7085392 | Loudspeaker sound modulation appliance In combination with a loudspeaker assembly that includes a speaker diaphragm that is displaced to produce sound, the combination comprising a spinner element mounted to rotate in the path of sound waves produced by the speaker diaphragm; and a rotary drive for rotat... | 08/01/2006 |
| 7058188 | Configurable digital loudness compensation system and method An audio loudness compensation system includes a level sensor receiving an audio input signal and operable to estimate a level of the audio input signal over a first predetermined time period, and a level mapper receiving the estimated level and operable to map the ... | 06/06/2006 |
| 7049504 | Tremolex An electronic tremolo producing apparatus for stringed electronic musical instrument is provided. The tremolo apparatus includes an electronic base unit mounted on the instrument with an attached tremolo arm. The base unit and the tremolo arm are designed to be moun... | 05/23/2006 |
| 7046053 | Total harmonic distortion standard Embodiments of the invention provide a method and an apparatus for generating a total harmonic distortion reference signal. A triangle wave having a predetermined frequency and a predetermined amplitude is generated. The triangle wave is filtered to produce a signal... | 05/16/2006 |
| 7039959 | Goggle for protecting eyes with movable single-eye lenses and methods for using the goggle A goggle comprising a single-eye lenses, a frame, a lens-retention mechanism and an adjustment mechanism wherein the single-eye lenses can be selectively moved relative to the frame to at least two different positions defining substantially different levels of air f... | 05/09/2006 |
| 7036927 | Face foam free protective eyewear with inner liner and vent The present invention provides protective eyewear for indoor and outdoor activities. In particular the present invention provides eyewear with an inner liner that protects the wearer's eyes from wind, dust, moisture, glare, allergens, and damaging ultraviolet radiat... | 05/02/2006 |
| 7024007 | Electric signal processing of electroacoustic transducer 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 transformat... | 04/04/2006 |
| 7013281 | Sound generator circuit pre-filter system and method A sound generator apparatus configured to improve sound quality for a sound generator that includes a processing device and a memory coupled to the processing device. The sound generator apparatus also includes a sound generator coupled to the processing device. Fur... | 03/14/2006 |
| 6978031 | Loudspeaker sound modulation apparatus A loudspeaker assembly includes a speaker diaphragm that is displaced to produce sound, and a spinner element mounted to rotate in the path of sound waves produced by the speaker diaphragm, the spinner defining sound wave passing through openings, in said path. Illu... | 12/20/2005 |
| 6865430 | Method and apparatus for the distribution and enhancement of digital compressed audio 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... | 03/08/2005 |
| 6845165 | Acoustic effect apparatus and method and program recorded medium therefor 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 o... | 01/18/2005 |
| 6792119 | Audio system 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 har... | 09/14/2004 |
| 6686833 | Compound acoustic actuator drive circuit and portable information terminal 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 stor... | 02/03/2004 |
| 6617966 | Compound acoustic actuator drive circuit and portable information terminal 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 stor... | 09/09/2003 |
| 6611592 | Incoming-call tone generation device 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 control... | 08/26/2003 |
| 6233342 | Sunglasses with adjustable ventilation Eyewear is disclosed for use in sports and the like which allows the wearer to adjust the flow of air across the inside surface of the lens without having to remove the eyewear. The eyewear includes a frame shaped to fit a wearer's face, one or two lenses... | 05/15/2001 |
| 5926554 | Pickup amplifier system for public address system A pickup amplifier system for a public address system including an amplifier, an amplifier box and a speaker simulator microphone wired between amplifier and amplifier box. The amplifier system is characterized by the following features: the speaker simulator ... | 07/20/1999 |
| 5896291 | Computer system and method for implementing delay-based effects using system memory A system and method is provided for performing sound synthesis with delay-based special effects which may be algorithmically implemented using one or more time-delay elements The system implements the time-delay elements by using system memory to store ti... | 04/20/1999 |
| 5848166 | Hybrid electronic and electromechanical device for the production of tremulant sound An audio tremolo producing system uses a rotating horn as a tremolo producing device for mid and high frequency audio signals, and an electronic tremolo producing device capable of both phase and amplitude modulation for low frequency signals.... | 12/08/1998 |
| 5781636 | Method and apparatus for generating sounds with tremolo and vibrato sound effects A digital sound generator with tremolo and vibrato sound effects is provided, which comprises: a source memory for storing different types of wave-tables; a first adder for adding a constant frequency and a step-varied frequency waveform to produce a trem... | 07/14/1998 |
| 5763807 | Electronic music system producing vibrato and tremolo effects An electronic music system adapted to generate tone waves of different pitch, amplitude and duration which, when reproduced, create musical tones whose expressive qualities emulate the expressive quality of natural tones producible by acoustic instruments... | 06/09/1998 |
| 5649015 | Speaker simulator A speaker simulator receives a high power musical signal from a power amplifier, and a reduced power signal is extracted by a pad circuit and directed to a high-pass filter and a fan circuit which drives a cooling fan. The output of the high-pass filter i... | 07/15/1997 |
| 5647005 | Pitch and rate modifications of audio signals utilizing differential mean absolute error A method is disclosed of modification of parameters of audio signals by dividing a digital signal converted from an original analog signal into sound frames, modifying a pitch and a playing rate of the digital signal within a frame and subsequent successi... | 07/08/1997 |
| 5647004 | Multi-stage solid state amplifier that emulates tube distortion A multi-stage solid state amplifier emulates the distortion associated with grid current flow in a multi-stage tube amplifier by means of a clipping device in the circuit between each series connected stage. In a particular embodiment, each stage includes... | 07/08/1997 |
| 5619578 | Multi-stage solid state amplifier that emulates tube distortion A multi-stage solid state amplifier emulates the distortion associated with grid current flow in a multi-stage tube amplifier by means of a clipping device in the circuit between each series connected stage. In a particular embodiment, each stage includes... | 04/08/1997 |
| 5524074 | Digital signal processor for adding harmonic content to digital audio signals A digital audio signal processor for adding harmonic content to an input audio signal through a non-linear transfer function with discontinuities. The discontinuities are generated by bit shifting each input value by an amount dependent on the sign and ma... | 06/04/1996 |
| 5463691 | Effect imparting apparatus having storage units for storing programs corresponding to form and effect to be imparted to an input signal and for storing output form programs to determine form of output signal with imparted effect The kinds of effects imparted to signals received from a keyboard or a microphone are stored beforehand in a first and a second effector. An effect (1) input selector and an effect (2) input selector set forms in which signals are fed to the respective ef... | 10/31/1995 |
| 5386529 | Digital signal processor for use in sound quality treatment by filtering A digital signal processor in which the control device transmits to and writes into the buffer memory the data necessary for multiplication or for generating addresses in the external memory, and then the data in the buffer memory is written into the inte... | 01/31/1995 |
| 5333203 | Reverb and selectable tremolo and vibrato electron tube preamplifier A preamplifier device employing electron tubes wherein the preamplifier has tremolo/vibrato circuits independent from reverb circuits allowing continuously variable control of either tremolo or vibrato effects simultaneous with continuously variable contr... | 07/26/1994 |
| 5243658 | Modulation effect adding apparatus A modulation effect adding apparatus in which when an input signal is written into a memory and read and output with a given delay time, the delay time is changed depending on an LFO waveform to thereby add a modulation effect to the input signal. The LFO... | 09/07/1993 |
| 5060270 | Reverberation circuit A reverberation circuit comprises an amplifier, attenuation circuit, a feedback component, and a delay circuit. The amplifier, delay circuit, and feedback component form a feedback loop. The amplifier amplifies an input signal supplied to an input termina... | 10/22/1991 |
| 5050216 | Effector for electronic musical instrument An input waveform signal is converted in an A/D converter into a digital signal to be written in a waveform memory under control of a tone generation control unit. The written digital signal is read out from the waveform memory with a designated delay tim... | 09/17/1991 |
| 5036541 | Modulation effect device A modulation effect device is implemented by utilizing a fact that a phase or frequency of an output signal from a digital filter can be varied by varying a filter-coefficient according to a lapse of time. A musical tone signal inputted into the digital f... | 07/30/1991 |
| 4727581 | Method and apparatus for increasing perceived reverberant field diffusion A method and apparatus for increasing perceived reverberant field diffusion in systems providing electro-acoustic reverberant enhancement to rooms or spaces includes independent modulation of the phase of each individual release loudspeaker channel in res... | 02/23/1988 |
| 4648116 | Sound panning apparatus Sound projecting apparatus employs a microcomputer to pan a musical performance automatically, according to a preset program, and to display the instantaneous location of the apparent sound source by means of an array of lights.... | 03/03/1987 |
