Matches 151 - 186 out of 186 < 1 2 3 4


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DE19929708A1 Method for extracting parameters relevant to the ground while locating sediment uses non-linear acoustic sources of sound to evaluate signals reflected and scattered back on the ground and on the margins of different layers.  
A directionally stabilized vertical, parametric sound converter transmitter (1) beams sound towards the ground (3) in a narrow, vertical beam (2). A sound converter receiver (4) picks up...
DE19945259C1 Electroacoustic noise generation device e.g. for simulating automobile engine noise uses signal processing device with synthesizer for mixing signal from sound pressure sensor in air intake with synthetic tones  
The electroacoustic noise generation device has a sound pressure sensor (12) inserted in the air intake of an automobile engine, coupled via a signal processing device (14) to a loudspeaker (16)....
DE19904106A1 Sound generator with pump drive  
The aim of the invention is to produce a sound generator for eliminating interference by means of sound absorption and for reproducing signals, speech and music. The sound is preferably generated...
DE19860113A1 Method and apparatus for generating noise, particularly switching noise  
In a method for generating noise, particularly switching noise, it is provided that the frequency values ​​sequentially from a memory (1) is read, that in accordance with the read out frequency...
DE19845736A1 A device for electroacoustic sound recycling  
The invention relates to a device for electro-acoustic sound feedback for a motor vehicle (10) with a sound pressure sensor (12), a signal processing unit (14) which is connected to the sound...
DE19831576A1 Procedure for generating from operation of IC engine, corresponding noises in cabin of car has pressure variations detected in fresh air flow passed to engine and converted into signals, made audible via loudspeaker(s) in cabin  
A procedure for generating from the operation of an IC engine, corresponding noises in the cabin of a car has pressure variations detected in the fresh air flow passed to the engine and converted...
DE19825280A1 Device for influencing an audio signal in a motor vehicle  
In a device for influencing an audio signal in a motor vehicle having an envelope modulator of the envelope modulator modulates the audio signal with an envelope having a wakefulness of the...
DE19825280B4 Device for influencing an audio signal in a motor vehicle  
device for influencing an audio signal in a motor vehicle with an envelope modulator (6) the audio signal with an envelope curve (A, B, C, D) is modulated, a alertness of the vehicle occupant...
DE19824156A1 Apparatus for reproducing sounds  
The invention relates to a device for rendering high-quality sounds in equipment with limited space, for example notebooks. Said device consists of two very small loudspeakers (L1, L2) working in...
DE19819998A1 An apparatus for generating noises  
The invention relates to a device for the generation of noises of technical devices which are operable by a control device, wherein a microprocessor unit is driven by the drive unit in addition to...
DE19810124B4 The active noise influencing system for sound reinforcement of the interior or the driver's area of ​​a motor vehicle  
Writer Influencing noise system the sound of the interior or the driver's area of ​​a motor vehicle according to a predetermined target noise depending on at least one operating condition,...
DE19810124A1 Active sound-muffling system  
The active noise-muffling system is based on a pre-set target noise dependent on at least one operating condition. The preset target noise is an empirically evaluated noise for achieving a...
DE19851094A1 Information distribution system for distributing information from an information center to at least one information terminal, e.g. in a karaoke communications system  
The system has an information center and terminal(s) to which data are down loaded from the center. The terminal contains a generator of requests for data from the center, a communications device...
DE19743662A1 Bit rate scalable audio data stream generation method  
Method involves compressing audio data stream in a core codec (100) by determining core parameter (102). The coding is improved in at least one following enhancement stage (110), controlled by the...
DE19741503A1 Audio player and method for controlling audio data by the audio player  
The invention relates to an audio-player with an interchangeable data carrier for audio data. At least one micro-controller (8) with a connection to its own peripheral keyboard (10) is provided in...
DE19726271A1 Vehicle or machine noise simulation  
The method involves recording a limited number of random samples of an original noise having various discrete parameter values, such as engine speed, or parameter value combinations. The random...
DE19701801A1 Motor and vehicle noise simulator e.g. for electric vehicle  
The noise simulator/generator is fitted to a vehicle and is driven by a control which receives information on the speed of the vehicle. Sensors (13) monitor wheel speed, motor speed etc. and the...
DE19746523A1 Engine sound generation method for automobile  
The engine sound generation method detects the engine revs for calculating the corresponding engine noise frequency, for controlling at least one loudspeaker (10) within the vehicle passenger...
DE19643030A1 Noise generation system for motor vehicle  
The system generates noise with respect to the vehicle operation state. The type of noise generation is based on the selected transmission gear ratio. Preferably, the transmission is manually or...
DE19641493A1 Signal device for vehicle  
The signal device generates an acoustic signal when a switch element is switched. The switch elements (7-9) each have a connection (4-6) with a common electric circuit (1). The electric circuit...
DE19628849A1 Directional luminaires by modulated ultrasound  
An ultrasonic beam (19) is used as a virtual array for an acoustic directional transmitter (11). The acoustic useful signal (from 17) is modulated upon the ultrasonic beam (19) as carrier via...
DE19543078A1 Sound generating device  
A sound generating apparatus for movable objects, particularly model trains, generates audible sounds from digital signal representations of actual train sounds prestored in a memory mounted on...
DE4415816A1 String instrument, e.g. violin, viola, initial tuning method  
The method involves exciting oscillations in a resonant body (7) of the string instrument (1). The oscillations are produced by an electroacoustic transducer (3) and then transmitted to the...
DE4335568A1 Process for the auditory realisation of theoretical systems related to 2 relationships  
There has previously not been an instrument for the auditory realisation of theoretical systems related to 2 relationships. The problem is the conversion of constructs which are determined...
DE4326639A1 Method for generating background sound  
In a method for generating background sound in a vehicle with a loudspeaker system, a recorded engine noise (motor noise) is to be synchronised continuously with a current driving state and/ôor a...
DE4305960C1 Digital dictation system with protection device against unauthorised listening - contains memory cards with stored codes accessible only by internal comparators controlling access to stored information  
The dictation system contains mobile and/or stationary dictation devices as reception and/or reproduction devices contg. mechanisms for converting analogue speech signals into digital data and...
DE4228362A1 Integrated tone generator circuit - combines binary tone elements with respective current source outputs supplied to loudspeaker via current amplifier  
The circuit uses a tone generator (TG) providing a clock signal (F) and a binary coded tone sequence. At least one current source device (SS) has a number of different outputs. A current amplifier...
DE4209737A1 Panorama X=ray device - has central processor controlling generation of melody or buzz tone during operation of X=ray device  
The X-ray device has a pivot arm supporting the X-ray source and an X-ray film cassette at its opposite ends. A control processor controls the pivot movement of the arm and the X-ray exposure,...
DE3938312A1 Generating source audio data  
In the generating process, an analog or digital input signal is fed to a comb filter, passing only the basic frequency and its harmonic oscillations for generating analog or digital output...
DE3938311A1 Source audio data generator  
For the generation of source audio data, the signal data for a preset number of actual scanning values are interpolated for generating several interpolated scanning values. From the actual and...
DE3914630A1 Device for supplying an aural-signal loudspeaker  
The invention relates to a device for supplying loudspeakers which are used as acoustic signalling devices when this signalling must have a high sound level at low frequency. This device is...
DE3812144A1 Circuit arrangement for emitting acoustic alarm signals for alarm signalling systems  
The amplitude curve of a plurality of different alarm signals is stored in digitised form in a semiconductor memory (SP). With a start signal (STA) of an alarm triggering device, at least one of...
DE3705176A1 Digital signal converter with nonlinear conversion characteristic  
Using the digital signal converter according to the present invention, it is intended to be possible to convert input digital signals into output digital signals, which are nonlinearly dependent...
DE3628219A1 Device for generating waves  
The invention relates to a device for generating in particular acoustic waves of a predetermined frequency and amplitude shape, preferably for equilibrating a musical instrument such as an organ....
DE3717278A1 METHOD AND APPARATUS FOR GENERATING ARTIFICIAL ANIMAL VOICES RELEVANT LAUTEN  
The invention relates to a method for synthesising sounds corresponding to animal cries. This method consists in carrying out harmonic analysis of the frequencies of these sounds, then in...
DE3605690A1 Speaking postcard  
A speaking postcard is created which exhibits a sound carrier module (16) in the form of an integrated circuit, a battery (9) and a sound transducer (4). The integrated circuit exhibits a ROM...

Matches 151 - 186 out of 186 < 1 2 3 4