| Patent Number |
Title Of Patent |
Date Issued |
| RE38822 |
Circuit, audio system and method for processing signals, and a harmonics generator |
October 11, 2005 |
| A circuit, audio system and method are presented for processing an audio signal, in which a frequency band is selected, harmonics are generated from the selected signal by a harmonics generator, wherein the harmonics are scaled by a level detected in at least a part of the spectrum of th |
| 7054455 |
Audio system |
May 30, 2006 |
| An audio system includes a circuit (12) for processing an audio signal, which circuit (12) having an input (20) for receiving the audio signal and an output (26) for supplying an output signal. The circuit (12) further includes a harmonics generator (22) coupled to the input (20) for |
| 6792119 |
Audio system |
September 14, 2004 |
| An audio system includes a circuit (12) for processing an audio signal, the circuit (12) having an input (20) for receiving the audio signal and an output (26) for supplying an output signal. The circuit (12) further includes a harmonics generator (22) coupled to the input (20) for g |
| 6678380 |
Audio system |
January 13, 2004 |
| An audio system includes a circuit (12) for processing an audio signal, this circuit (12) having an input (20) for receiving the audio signal and an output (26) for supplying an output signal. The circuit (12) further includes a harmonics generator (22) coupled to the input (20) for |
| 6456718 |
Audio system |
September 24, 2002 |
| An audio system includes a circuit (12) for processing an audio signal, this circuit (12) having an input (20) for receiving the audio signal and an output (26) for supplying an output signal. The circuit (12) further includes a harmonics generator (22) coupled to the input (20) for |
| 6292570 |
Surround sound |
September 18, 2001 |
| To improve listener perceived characteristics multi-channel sound reproduction systems are known which include a surround sound channel. It is preferred to reproduce the surround sound signal without having rear loudspeakers, so using the front stereophonic loudspeakers. To improve the |
| 6134330 |
Ultra bass |
October 17, 2000 |
| To improve the perceived audio signal, it is known to use a harmonics generator to create the illusion that the perceived audio includes lower frequency signal parts than really available. In addition to improving the perceived so called ultra bass signals (for example 20-70 Hz) also the |
| 6111960 |
Circuit, audio system and method for processing signals, and a harmonics generator |
August 29, 2000 |
| A circuit, audio system and method are presented for processing an audio signal, in which a frequency band is selected, harmonics are generated from the selected signal by a harmonics generator, wherein the harmonics are scaled by a level detected in at least a part of the spectrum of th |
| 6084970 |
Mono-stereo conversion device, an audio reproduction system using such a device and a mono-stere |
July 4, 2000 |
| The invention provides a method and a device for converting a monaural signal into a stereo signal by selectively allocating frequency bands of the input signal to left or right outputs. In this way, some instruments will be present only in the left output and others only in the right |
| 6002774 |
Arrangement, a system, a circuit and a method for enhancing a stereo image |
December 14, 1999 |
| A stereophonic audio signal processing arrangement for variably enhancing a stereo image, wherein the stereo image enhancement is reduced at high signal levels so as to reduce distortion. The arrangement is used in a stereophonic audio reproduction system for enhancing the stereo image, |
| 5878391 |
Device for indicating a probability that a received signal is a speech signal |
March 2, 1999 |
| A probability indication signal V.sub.P indicates the probability that the audio signal received via the input is a speech signal. An analyzing circuit derives (NA) which is indicative of the ratio between a signal power in a first portion of a frequency spectrum of the received signal |
| 5742687 |
Signal processing circuit including a signal combining circuit stereophonic audio reproduction s |
April 21, 1998 |
| A signal combining circuit has a first input and a second input for receiving signals which have frequencies in the audio frequency spectrum, and an output. A first signal path between the first input and the output has a first transfer characteristic (H1.H3). A second signal path betwee |
| 5724430 |
Audio-visual arrangement and system in which such an arrangement is used |
March 3, 1998 |
| An audio-visual arrangement, more particularly, a multi-media terminal, includes a picture screen on which pictures can be displayed. The arrangement further includes a plurality of electro-acoustic converters for reproducing sound that corresponds to audio information generated by t |
| 5426702 |
System for deriving a center channel signal from an adapted weighted combination of the left and |
June 20, 1995 |
| The system includes a direction detection circuit (32) for deriving a measure (Vwh) for a direction of a direction vector (Wh) which vector, in a state area in which combinations (R,L) of signal values of the left and right channel signals are shown at specific instants, is indicative of |
| 4660097 |
Color video system with digital audio pulse width modulation |
April 21, 1987 |
| A method of encoding a recording signal which includes a composite color video signal and a digital audio signal, for recording the same on and reading it from an optical video disc is disclosed. The color video signal is frequency-modulated on a carrier wave in the customary manner, whi |
| 4613961 |
Optical reader with a limiter in the tracking or focus error servo control loop |
September 23, 1986 |
| Faults in servo control systems as a result of, for example, signal spikes caused by defects such as thickness variations, air bubbles, and scratches and dust particles on the substrate of the record carrier in an apparatus for reading an optical record carrier, can be suppressed effecti |
| 4499570 |
Dropout circuit arrangement for converting an information signal into a rectangular signal |
February 12, 1985 |
| For the conversion of a signal read from a record carrier into a rectangular signal, a threshold-value circuit is used, whose threshold value is determined by a reference signal. The reference signal is derived from a d.c. component in the converted signal. During a dropout in the si |
| 4473829 |
Method of recording a digital information signal on a record carrier having a radiation-sensitiv |
September 25, 1984 |
| A method of recording a binary information signal on a record carrier having a radiation-sensitive information layer. The information signal is encoded in such a way that at least n (n.gtoreq.2) consecutive bit cells are of the same type. This information is recorded as pattern of unitar |
