Abstract: A guitar amplifier having at least one channel, each channel having a differential amplifier with first and second amplifying members, each amplifying member having a control element, an electron emitting element and an electron collecting element, the electron emitting elements of the amplifying members commonly coupled and an output amplifier coupled to the differential amplifier and having an output terminal selectively coupled to the control element of the second amplifying member of the differential amplifier as a feedback path. An input terminal coupled to the control element of the first amplifying member and a user-adjustable presence control circuit selectively coupled between the control element of the first amplifying member and ground to increase the perceived brightness, when selected. The presence control circuit includes a high pass filter disposed between the input terminal and ground to filter a selected high frequency portion of the signal received at the input terminal.

Abstract: An electronic signal processor for processing signals includes a complex first filter, one or more gain stages and a second filter. The first filter is characterized by a frequency response curve that includes multiple corner frequencies, with some corner frequencies being user selectable. The first filter also has at least two user-preset gain levels which may be alternately selected by a switch. Lower frequency signals are processed by the first filter with at least 12 db/octave slope, and preferably with 18 db/octave slope to minimize intermodulation distortion products by subsequent amplification in the gain stages. A second filter provides further filtering and amplitude control. The signal processor is particularly suited for processing audio frequency signals.

Abstract: An effects and recording system is provided which is capable of recording at least one of a received audio signal and a processed audio signal generated by the application of musical effects to the received audio signal. The audio signal may be captured from any device capable of producing an audio signal. The effects and recording system may provide various recording capabilities including auto track selection and arming, automatic signal routing, delayed recording initialization, automatic level setting and panning settings, editing capabilities, and the merging of recorded tracks. Additionally, the effects and recording system may provide various monitoring capabilities, including automatic level, panning, and/or effects or other filtering of signals recorded or monitored via the system, as well as an enhanced mix-down feature, and music mix-down type.

Abstract: A digital processing stage-box that may be placed on stage to process audio input from on-stage audio input devices and generate output to audio output devices for playback to an audience. The on-stage audio input and output devices may be connected to the digital processing stage-box using an analog or network cable connection. The digital processing stage-box is controlled from a remote control device preferably connected to the digital processing stage-box via a wireless network connection. This arrangement allows the electronics needed to process audio input and output to be placed on or close to a stage.

Abstract: The invention is directed at a preamplifier for a musical instrument comprising apparatus for receiving and processing a signal from a sound gathering device and for transmitting the processed signal to an external apparatus; an internal power source; a voltage receiving circuit, for receiving power from the external apparatus; and a voltage determining circuit, connected to the internal power source and the voltage receiving circuit, for determining whether the internal power source or the voltage receiving circuit should power the preamplifier by determining which is providing a higher voltage.

Abstract: A 3-D face recognition system has a first data storing module for storing 3-D face model data and 2-D face image data; an input unit for inputting 3-D face model data and 2-D face image data; a signal converting module for converting analog data of the 3-D face model data and 2-D face image data to digital data; a second data storing module for storing the digital data; a microprocessing module for analyzing geometric characteristics of points in the 3-D face model data stored in the first and second data storing module to determine feature points of the 3-D face model data, and assigning different weight ratios to feature points; and a comparing module for comparing the feature points stored in the first and second data storing module, during which, different geometric characteristics being given different weight ratios, and calculating relativity between the feature points to obtain a comparison result.

Abstract: Provides a one-terminal effector having an input terminal and an output terminal structured as one terminal by providing a circuit that makes input and output of the effector common. The one-terminal effector can avoid complex cable wiring, and can prevent degradation of sound quality. The one-terminal effector includes one input/output terminal, and an effector circuit that executes a predetermined processing on an analog audio signal that is input from the input/output terminal, and outputs the processed analog audio signal from the input/output terminal. The one-terminal effector further includes an input/output signal conversion circuit that converts the input signal and the output signal into mutually different signal forms of voltage signals or current signals.

Abstract: There is provided a pickup apparatus for reliably and correctly picking up piano sound by rigidly connecting a sound source member such as a sound board of a piano body, with a stationary member such as a cast-iron plate with use of a pickup apparatus body of the invention to one another so as to pickup the generated vibration force. The pickup apparatus can also be attached to or detached from an existing piano easily and at low cost, and the piano is not damaged when the pickup apparatus is attached to and detached from the piano. Further, noise component which is unnecessary for the piano sound can be eliminated by providing the pickup apparatus body of the present invention with a mechanical vibration filter.

Abstract: An apparatus for amplifying the sound of a stringed instrument includes, in its most basic form, a speaker attached to a strap that is adapted to be draped around a musician with each end thereof detachably-attachable to the stringed instrument. An amplifier circuit, according to a first embodiment, is connected to the speaker and attached to the strap along with a battery. A pickup wire is attached to an input of the amplifier circuit and to an electrical jack on the musical instrument. Portable amplification of the stringed instrument is provided. Other embodiments disclose a remote amplifier circuit and a remote battery that are attached elsewhere to the musician while the amplifier circuit output remains connected to the speaker that is always attached to the strap. A two-piece strap is disclosed as are a variety of different types of speakers that are attached to any preferred version of the strap.

Abstract: This invention provides a system for customizing musical instrument signal processing enabling users to produce different tonal characteristics in created musical pieces. In order to create such tonal characteristics, a new mathematical model of tonal characteristics may be digitally created based on two or more initial mathematical models of tonal characteristics. After simulating a first and second initial mathematical models of tonal characteristics, the new mathematical model is created by interpolating one or more coefficients of the first and second initial mathematical models. The new mathematical model may also adjust a control parameter where the control parameter may exist between two values. When the control parameter is the first value, the new mathematical model is the first initial mathematical model. When the control parameter is the second value, the new mathematical model may be the second initial mathematical model.

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: A resonance chamber with two or more speakers positioned in the lid of a commercially available cooler chest and electrically connected to a radio circuit board also positioned in the lid and powered by a solar panels or a combination of solar panels and batteries. All elements are water proofed and positioned for protection during normal use of the cooler and positioned so as to not disrupt the normal use of the cooler.

Abstract: An acoustic control system for an electronic musical instrument, which can obtain optimal acoustic characteristics irrespective of whether or not a low range speaker is attached to a body thereof. A piano body has high range and mid range speakers. A low range speaker is removable from the body. A stand-excluding switch designates a first speaker-use mode for using the high range and mid range speakers alone, and a stand-including switch designates a both speaker-use mode for using both the high range and mid range speakers and the low range speaker. A ROM stores stand-excluding and stand-including factors for setting acoustic characteristics in the two modes, respectively. A CPU reads one of the factors, which corresponds to the mode designated by the stand-excluding or stand-including switch. A tone generator circuit generates a musical tone signal to be reproduced in one of the modes, based on the read factor.

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: On a casing of an electronic keyboard instrument, there are provided front speakers, rear speakers and upper speakers as non-front speakers, a woofer speaker, and a vibrator. Tone generator section generates tone signals of tone colors corresponding to tones of various musical instruments. Assignment section adjusts, on a tone-color-by-tone-color basis, tone volume allocations, of the generated tone signals, to the speakers and vibrator. Further, the thus-adjusted tone signals are mixed for each of speaker reproduction systems and vibrator drive system, and then the resultant mixed tone signals of the speaker reproduction systems and vibrator drive system are supplied to corresponding ones of the speakers and vibrator.

Abstract: The invention provides a portable audio amplifying apparatus for an MP3 player, particularly various IPOD™ models, and any other portable handheld multimedia device, which comprises a receptacle, a connecting means, an amplifier means, at least one audio speakers and a power source means. The receptacle is made up of a door assembly and a lock plate assembly operatively linked to accommodate all existing MP3 players or portable handheld multimedia devices that are smaller than the original IPOD™ player while allowing easy access to the control units during playback. Sliding the multimedia device into the receptacle and closing the door locks the device into place to ensure extremely secure compartment. The connecting means is made up of a finger grasp, an input plug, a spring mechanism and a cable connector. Furthermore, the unique design of the finger grasp allows easy movements of large fingers within limited space of the receptacle.

Abstract: Sound data output and manipulation with haptic feedback. Haptic sensations are associated with sound data to assist in navigating through and editing the sound data. The sound data is loaded into computer memory and played such that sound is output from an audio device. The sound playing is controlled by user input for navigation through the sound data. Haptic commands are generated based on the sound data and are used to output haptic sensations to the user by a haptic feedback device manipulated by the user. The haptic sensations correspond to one or more characteristics of the sound data to assist the user in discerning features of the sound data during the navigation through and editing of the sound data.

Abstract: A digital media communications and control system includes a plurality of audio devices each of which includes a device interface module for communication of digital media data and control data from at least one of the devices to at least one other of the devices. A universal data link is operatively connected to each of the device interface modules. The device interface modules and universal data links are operative in combination to connect the devices together in the system and provide full duplex communication of the digital media data and control data between the devices.

Abstract: This invention provides a system for customizing musical instrument signal processing enabling users to produce different tonal characteristics in created musical pieces. In order to create such tonal characteristics, a new mathematical model of tonal characteristics may be digitally created based on two or more initial mathematical models of tonal characteristics. After simulating a first and second initial mathematical models of tonal characteristics, the new mathematical model is created by interpolating one or more coefficients of the first and second initial mathematical models. The new mathematical model may also adjust a control parameter where the control parameter may exist between two values. When the control parameter is the first value, the new mathematical model is the first initial mathematical model. When the control parameter is the second value, the new mathematical model may be the second initial mathematical model.

Abstract: For musical instruments or sound reproduction, finer sound definition is preferable. In sound reproduction, electro-acoustic transducers fitted with round membranes or electrostatic system stripes are common. No system states that the sound created is correct for the human ear. The present method concerns a fractal shape responding to criteria of the human ear shape. A membrane which, like the ear via its shape, is a set of resonators with different frequencies. The membrane shape, known as a harmony amplifier, has independent tongues emitting from a given surface, like fingers of a hand coming out of the palm. A membrane can be put into digital form by tongues. The membrane is placed in a musical instrument. Another variant is a membrane mounted on a sound frequency generator constituting an electro-acoustic transducer. This is effective for all types of musical instruments and particularly for audio and audio-visual applications.

Abstract: Multipliers respectively multiply a tone signal supplied from a sound source and a tone signal corrected by a filter according to hearing correction characteristics by balance control coefficients generated by a control coefficient generator based on tone volume control data, and an adder adds the products to adjust the tone volume balance. A multiplier multiplies the tone signal output from that adder by a tone volume control coefficient generated by the control coefficient generator based on the tone volume control data to adjust the tone volume. Frequency characteristics for correcting hearing characteristics are given to the tone signal in accordance with the tone volume of tones to be generated, thus maintaining tone volume balance upon hearing among tone colors of tones to be generated by an electronic musical instrument.

Abstract: Sound data output and manipulation with haptic feedback. Haptic sensations are associated with sound data to assist in navigating through and editing the sound data. The sound data is loaded into computer memory and played such that sound is output from an audio device. The sound playing is controlled by user input for navigation through the sound data. Haptic commands are generated based on the sound data and are used to output haptic sensations to the user by a haptic feedback device manipulated by the user. The haptic sensations correspond to one or more characteristics of the sound data to assist the user in discerning features of the sound data during the navigation through and editing of the sound data.

Abstract: During mixing of two musical tracks, the variations in combined output volume are reduced by analyzing either the intrinsic amplitude at which each track was mastered or the output amplitude (i.e. subsequent to amplification of the audio signal), and modifying either the intrinsic amplitude or amplification during the mixing phase. Musical clashes during mixing are avoided by analyzing intrinsic amplitudes of the two tracks at similar frequencies to detect the likelihood of a clash, and in the event a clash is detected, reducing the output amplitude of one of the tracks at the relevant frequency.

Abstract: A system for relating electromagnetic waves to harmonic sound waves that includes a memory with logic, and a processor configured with the logic to assign one fundamental color of a color spectrum of twelve analogous colors to one of twelve fundamental tones of a musical 5th relationship, wherein the tones are represented by notes, wherein the processor is further configured with the logic to consecutively associate the remaining analogous colors to the tones.

Abstract: The present invention permits the parameters of at least one of the frequency characteristic adjusting circuit and the effect circuit in its DSP to be modified for providing the line-out jacks with an optimum music signal when its speaker (SP) switch is turned off with no headphone connected. When the headphone plug is connected with no headphone jack, the effect setting switch is assigned with a function of speaker system effect setting. When the headphone plug is connected with a corresponding headphone jack, the effect setting switch is assigned with a function of headphone effect setting. Also, upon judging that the headphone plug is connected with the headphone jack, the function of an equalizer (EQ) switch is disabled.

Abstract: An electronic musical instrument having a keyboard and a loudspeaker, wherein the loudspeaker comprises a resonant distributed mode acoustic radiator having a stiff lightweight member having capability to sustain and propagate input vibrational energy by bending waves in at least one operative area extending transversely of thickness, and a transducer mounted wholly and exclusively on the member at a predetermined location or site within the operative area.

Abstract: A modular amplification system consisting of a plurality of pre-amplifying modules for allowing a user to select at will, a particular module as desired. The modular amplification system includes a chassis which houses a power supply for supplying low and high voltages to each of the pre-amplifying modules, support circuitry and interconnections for accessing the audio and control signals as required. Additionally, each of the pre-amplifying modules is designed, so that it contains the circuitry required for proper amplification of various musical instruments. The pre-amplifying module is selected from a vacuum tube amplifier, an analog and/or digital solid state amplifier, and analog or digital signal processing unit. The pre-amplifying module is then inserted into the chassis by an edge connector and suitable bolts which allows ease of installation and removal. Any combination of different pre-amplifying modules may be used which can then be selected by a user.

Abstract: A sound generator includes a memory bank storing user-selectable recorded sounds, a microprocessor that can quasi-randomly time-delay at least one of the recorded sounds, and a mixer that can combine a user-selected recorded sound and the time-delayed sound for output by speakers or earphones. The microprocessor can also cause the output sound to include a microprocessor-selected one of the recorded sounds for inclusion during playback of a user-recorded sound.

Abstract: An audio communications and control system includes a plurality of audio devices each of which includes a device interface module for communication of digital audio data and control data from at least one of the devices to at least one other of the devices. A universal data link is operatively connected to each of the device interface modules. The device interface modules and universal data links are operative in combination to connect the devices together in the system and provide full duplex communication of the digital audio data and control data between the devices.

Abstract: A sound production apparatus has a speaker, an amplifier circuit that includes at least one electron tube, and a portable housing that encloses the speaker and contains the amplifier circuit such that the speaker is fully enclosed within the housing. In a particular implementation the amplifier circuit includes an input connector, a first triode connected to the input connector, a gain adjustment variable resistance connected to the first triode, and a second triode, which second triode is connected to the gain adjustment variable resistance. A tone adjustment section has a treble tone adjustment variable resistance, a bass tone adjustment variable resistance, and a midrange adjustment variable resistance, all connected to the second triode. A volume adjustment variable resistance is connected to the tone adjustment section, a pentode is connected to the volume adjustment variable resistance, and a transformer is connected to the pentode.

Abstract: A method and an apparatus for restoration of dynamic range to electronically amplified acoustic signals. The apparatus includes in combination: (i) a first input for accepting electrical input signals; (ii) a first output for supplying the electrical input signals to a signal conditioning apparatus; (iii) a second input for accepting conditioned electrical input signals from the signal conditioning apparatus; (iv) a gain-controllable amplifier having a signal input coupled to said first input and an output coupled to a second output for providing dynamic range restored output signals; and (v) a first circuit, the first circuit for controlling gain of the gain-controllable amplifier such that the gain-controllable amplifier has maximum gain when the electrical input signal has a predetermined maximum value and such that the gain-controllable amplifier has minimum gain when the electrical input signal has a predetermined minimum value.

Abstract: Methods and apparatus for reducing replays in the recording of live musical performances, and for other recording purposes, are disclosed. The apparatus includes novel audio frequency electrical signal processing devices which can be incorporated in re-recording systems by means of which "flat" recordings of original "live" instrumental and musical performances are re-recorded via effects boxes and instrument amplifiers which are different or differently set than the equipment used in making the original "live" recording, and thus the resulting re-recordings have the same apparent sound quality as recordings originally made "live" through the same effects boxes and instrument amplifiers set in the same way. The disclosed signal processing device of the invention includes an output trim control and a ground lift switch. Also disclosed are re-recording systems of the invention, and re-recording methods of the invention.

Abstract: A sound monitoring system includes a resonator platform comprised of musician support plate, a base plate, and at least one transducer. The musician support plate acts as a surface upon which the user may stand or sit. In response to high-frequency filtered and amplified electrical signals from a sound source, the transducer of the resonator platform imparts vibrational energy to the musician support plate, which in turn acts as a diaphragm to impart low frequency sounds to the musician by touch without generating appreciable audible energy. The base and musician support plates may have various geometric shapes and sizes, and are composed of materials suitable for transmitting vibrational energy.

Abstract: A musical instrument amplifier system (FIGS. 1 and 2) with a frequency selective crossover circuit (10) using passive band pass filters (36, 44) to separate the amplified signals from the power amplifier (14) of an amplifier system (12) into low frequency signals on an output connector (42) for a specially adapted bass audio speaker (38) while the higher frequency signals are applied to another speaker (46). The crossover circuit (10) is selectively connected with the normal speaker output (24) in lieu of the speaker (38) to add frequency crossover capability to any amplifier system. In another musical instrument amplifying system (88), the crossover circuit (FIG.

Abstract: Main voice processing is performed on an acoustic signal at a basic sampling frequency fs within one period of the basic sampling frequency fs to allow the main voice processing implemented acoustic signal to undergo down-sampling for implementing voice processing for acoustic effect to the acoustic signal at another sampling frequency 1/2 fs or one half the basic sampling frequency to allow the acoustic signal which has been subjected to voice processing for acoustic effect to undergo up-sampling and thus to continuously carry out the main voice processing by the basic sampling frequency fs and the voice processing for acoustic effect by another sampling frequency 1/2 fs.

Abstract: An electronic piano, comprises: a sound box having a configuration as in a stringed piano; an electronic keyboard carried by the sound box; an amplifying system; and, a control system for the electronic keyboard and the amplifying system. In a configuration corresponding to an upright piano, the sound box has first and second tweeters mounted through the top and directed upwardly, first and second mid-range speakers mounted through the rear wall and directed rearwardly, and first and second woofers directed angularly toward respective front-bottom corners of the sound box. The front wall has two openings through which sound reverberating inside the sound box is emitted.

Abstract: An electric guitar amplifier which utilizes a digital signal processor to produce vacuum-tube-like distortion without certain unwanted audio artifacts created by previous digital realizations of nonlinear, high-gain functions. By virtue of a microprocessor-controlled digital signal processor embodiment, the invention gives the user programmable control over parameters normally associated with state of the art guitar amplifiers (e.g. tone controls, reverb controls, tremolo controls, etc.), as well as other musically useful parameters which are not normally included among the controls of a guitar amplifier (e.g. selection of preamp type, autovolume, reverberation type, autowah, etc.).

Abstract: Device for treating signals. A device for treating signals having multiple inputs for the reception of signals, including adjustable elements for the treatment of signals, wherein the adjustable elements are connected with control elements for control purposes, with the control elements being provided on a control surface, wherein, in order to provide better overview of the control surface, the control surface includes, for the treatment of signals, an image display for each adjustable element for the actual adjustment thereof, with the control surface including additional control elements and additional displays which can be selectively associated with one of the adjustable elements, with the device including connections between each adjustable element, the additional control elements and the additional displays.

Abstract: An audio codec capable of handling complex control and routing of numerous sound inputs is described. The complex control and routing is obtained by weighting various sound inputs in accordance with weighting values and then digitally mixing the weighted sound inputs together. The invention facilitates construction of the audio codec with mainly fixed gain amplifiers, instead of variable gain preamplifiers, thereby saving a large amount of die space and reducing time needed for testing.

Abstract: A karaoke system of an online type is comprised of a karaoke station for sounding a karaoke performance according to a performance data, and a host station for supplying the performance data to the karaoke station in response to a request. The host station has a transmitter unit for time-sequentially dividing the performance data into a plurality of parts, and for successively transmitting each part arranged according to progression of the karaoke performance in response to the request. The karaoke station has a receiver unit operative when a preceding one of the transmitted parts is received for commencing the karaoke performance based on the received preceding part while admitting a succeeding one of the transmitted parts in parallel to sounding of the karaoke performance to thereby maintain continuous progression of the sounding of the karaoke performance.

Abstract: Headphones for acoustical reproduction of music or various audio signals and an electronic metronome device included therein.

Abstract: Effect data designating a desired sound effect is introduced from the outside, and a tone generator generates a tone imparted with an effect based on the introduced effect data. A conversion table is provided which classifies predetermined effects impartable by the tone generator into groups in accordance with characteristics of the effects and stores for each of the groups effect data indicative of effect belonging to the group. If it is ascertained, from the table, that the introduced effect data designates an effect not impartable by the tone generator, the effect data indicative of another effect belonging to one of the groups which corresponds to a characteristic of the introduced effect data is extracted from the table. The tone generator imparts the tone the effect designated by the extracted effect data in place of the introduced effect data.

Abstract: An entertainment system includes a cartridge provided with read-only memory (ROM) for storing digital data therein in accordance with predetermined addresses, and a player device structured to receive the cartridge therein. The player device is provided with an address register communicating with the ROM for identifying and activating one of the addresses, a digital to analog converter for converting the digital data to analog signals, a data bus for delivering the digital data from the activated address of the ROM to the digital to analog converter, an amplifier for receiving and amplifying the analog signals prior to delivery to a sound projecting device, such as speakers, and a timing circuit for activating the address register and digital to analog converter in alternating sequence.

Abstract: An apparatus for automatically recalling audio parameter setup is disclosed. A processor is coupled between a MIDI interface and one or more analog level controlled audio processor channels. The setup parameters, previously entered and stored by the composer in a host computer, are transmitted via the MIDI interface to the processor. The parameters are subsequently converted into an analog signal by a converter. The analog signal is provided to a parameter conversion array which converts the analog signal based on a transformation function. The outputs from the parameter conversion array are provided to one or more analog multiplexers. The outputs of the multiplexers are provided to the control inputs of the analog signal processing channels. Each control input of each analog signal processing channel includes a small capacitor, which in combination with an operational amplifier, forms a sample-and-hold circuit to temporarily store the analog output for the analog processor channels.

Abstract: Small discontinuities in digital sound data caused by a pitch control operation are processed by using a secondary FIR filter and smoothing the discontinuities. When lowering the key, the data value subject to the pitch down operation is moderately approximated to that of one sampling period before over a cycle of small discontinuity occurrence. when raising the key, the data value subject to the pitch up operation is moderately approximated to the current data value over a cycle of small discontinuity occurrence. By this method, the extent of the data discontinuity is greatly reduced. Large discontinuities for every segment are also processed by cross fading two converted data sequences which are produced from the input sound data and have different timings of large discontinuity occurrence, one data value being increased from its discontinuity point while the other data value is decreased from the same point in time.

Abstract: A start portion of sampled sound data is cleared, and the resultant sound data free from the start portion is modified into data increasing gradually from level "0". Thus, noise in the start portion of the recorded sound data is removed, and also sound data gradually increasing from level "0" at the start can be obtained, that is, a discontinuous point after the noise removal is precluded.

Abstract: A sound effect imparting apparatus, which is employed in the electronic musical instrument in order to impart a variety of sound effects to the musical tones in a variety of manners, is mainly configured by an effect program memory, a sound-effect operation portion, a mixer and a mixing information supply portion. The effect program memory stores a plurality of effect programs, respectively corresponding to a plurality of sound effects to be imparted to musical tone data, in advance. The sound-effect operation portion performs arithmetic operations and/or logical operations on its input data in accordance with the effect programs read from the effect program memory, thus imparting desired sound effects to the musical tone data. The mixer receives the musical tone data, given from an external device, and operation data, outputted from the sound-effect operation portion, representing the musical tone data to which the sound effects have been imparted.

Abstract: A centrally controlled voice synthesizer includes a memory which is preprogrammed with voice data, melody data, address data, and control data, an input processor for receiving an external signal and outputting a triggering signal, a clock generator for generating clock signals; a control logic unit receiving the clock signal from the clock generator, being triggered by the triggering signal from the input processor thus fetching the voice data, the melody data, the address data, and the control data from the memory, a decoder decodes the data fetched from the memory via the logic control unit and generates a control signal, a rhythm generator for outputting a rhythm signal to the logic control unit upon receiving the clock signal from the clock generator and the control signal from the decoder, a digital-to-analog converter connected to the memory and converts digital voice data from the memory to analog voice signal, a transistor connected to the digital-to-analog converter for amplifying the analog voice s

Abstract: An optical data storage and retrieval system uses printed cards having a plurality of parallel tracks of contrasting fields representing digital 1's and 0's. A timing track is included as one of the parallel tracks. The card is manually read by a plural parallel track reader indexed to an edge of the card. A stop code, start code, checksum and number of data bytes are included in data stored on the cards. The system can sort the data correctly regardless of whether it is read backwards or forwards Error detection is implemented with a checksum system. Data read from the cards are preferably passed to a voice or sound synthesizer which outputs synthesized voice or sounds responsive to the data stored on the cards.

Abstract: A programmable identification panel used in conjunction with an audio mixing sound system. The identification panel includes a changeable visual display, such as a liquid crystal display, for identifying a specific instrument or sound that has been assigned to a particular channel on the audio mixing device. The invention is particularly useful to audio engineers in that it helps to distinguish channel identification for multiple musical configurations.