| Patent Number |
Title Of Patent |
Date Issued |
| 6826525 |
Method and device for detecting a transient in a discrete-time audio signal |
November 30, 2004 |
| A method for detecting a transient in a discrete-time audio signal is performed completely in the time domain and includes the step of segmenting the discrete-time audio signal so as to generate consecutive segments of the same length with unfiltered discrete-time audio signals xs(T- |
| 6771777 |
Process for coding and decoding stereophonic spectral values |
August 3, 2004 |
| A method of coding stereo audio spectral values first carries out grouping of those values in scale factor bands, with which scale factors are associated. Sections are formed next, each comprising at least one scale factor band. The spectral values are coded within at least one section |
| 6766293 |
Method for signalling a noise substitution during audio signal coding |
July 20, 2004 |
| In a method for signalling a noise substitution when coding an audio signal, the time-domain audio signal is first transformed into the frequency domain to obtain spectral values. The spectral values are subsequently grouped together to form groups of spectral values. On the basis of |
| 6751267 |
Method for reducing peak values in single-carrier modulated or multi-carrier modulated digital t |
June 15, 2004 |
| For reducing a peak value in single-carrier modulated or multi-carrier modulated digital transmitter signals, the peak value is first determined from a plurality of transmitter symbols contained in the digital signal. If a predetermined value is exceeded, a replacement symbol is generate |
| 6657492 |
System for estimating a non-linear characteristic of an amplifier |
December 2, 2003 |
| In a method for estimating a non-linear characteristic of an amplifier, an input signal is provided, a reference signal is determined based on the power of the input signal, the input signal is amplified using said amplifier in order to produce an amplified signal, a measurement signal i |
| 6584138 |
Coding process for inserting an inaudible data signal into an audio signal, decoding process, co |
June 24, 2003 |
| In a coding method and a coder for introducing a non-audible data signal into an audio signal, the audio signal is first transformed to a spectral range and the masking threshold of the audio signal is determined. A pseudo-noise signal and a data signal are provided and multiplied with |
| 6502069 |
Method and a device for coding audio signals and a method and a device for decoding a bit stream |
December 31, 2002 |
| The present invention permits a combination of a scalable audio coder with the TNS technique. In a method for coding time signals sampled in a first sampling rate, second time signals are first generated whose sampling rate is smaller than the first sampling rate. The second time signals |
| 6453282 |
Method and device for detecting a transient in a discrete-time audiosignal |
September 17, 2002 |
| A method for detecting a transient in a discrete-time audio signal is performed completely in the time domain and includes the step of segmenting the discrete-time audio signal as to generate consecutive segments of the same length with unfiltered discrete-time audio signals. The dis |
| 6424939 |
Method for coding an audio signal |
July 23, 2002 |
| A method for coding or decoding an audio signal combines the advantages of TNS processing and noise substitution. A time-discrete audio signal is initially transformed to the frequency domain in order to obtain spectral values of the temporal audio signal. Subsequently, a prediction of t |
| 6421802 |
Method for masking defects in a stream of audio data |
July 16, 2002 |
| In a method for concealing errors in an audio data stream the occurrence of an error is detected in the audio data stream, audio data prior to the occurrence of the fault being intact audio data. Thereafter a spectral energy of a subgroup of the intact audio data is calculated. After for |
| 6370209 |
Process for sensing manipulations of digital information |
April 9, 2002 |
| In a method for detecting a manipulation performed on digital information the erroneous determination of a manipulation during processing disturbances is prevented by subdividing the information into information subunits from each of which an identification is derived which is assigned |
| 6341165 |
Coding and decoding of audio signals by using intensity stereo and prediction processes |
January 22, 2002 |
| In the coding and decoding of stereo audio spectral values both the intensity stereo process and prediction are used in order to achieve high data compression. If intensity stereo coding is active in one section of scale factor bands, the prediction for the right channel in that range is |
| 6314289 |
Apparatus and method for transmitting information and apparatus and method for receiving informa |
November 6, 2001 |
| An apparatus for transmitting information comprises a bitstream source for providing a bitstream representing the information, a redundancy adding encoder for generating an encoded bitstream, which is arranged to output, for a first number of input bits, a second number of output bits, t |
| 6314142 |
Pre-distortion for a non-linear transmission path in the high frequency range |
November 6, 2001 |
| A circuit for predistorting a signal to be transmitted via a non-linear channel comprises an envelope detector for detecting an envelope of the signal. A quantization for forming quantized envelope values on the basis of the detected envelope is connected to the envelope detector as well |
| 6185539 |
Process of low sampling rate digital encoding of audio signals |
February 6, 2001 |
| In a method for coding an audio signal digitized at a low sampling rate to obtain time domain audio samples. A frequency domain representation of the time domain audio samples is produced. The frequency domain representation includes successive frequency lines. These frequency lines are |
| 6115677 |
Consumption measurement system for remote reading |
September 5, 2000 |
| A consumption recording system affixed to a wall comprises a consumption ording device and a radio module, which is connected to the consumption recording device. A microstrip antenna is connected to the radio module. The microstrip antenna is placed within a non-metallic casing cover o |
| 6101475 |
Method for the cascaded coding and decoding of audio data |
August 8, 2000 |
| In a method for the cascaded coding and decoding of audio data the spectral components of the short-time spectrum associated with a data block are formed for each data block with a certain number of time input data, the coded signal is formed, by quantization and coding, on the basis of |
| 5918203 |
Method and device for determining the tonality of an audio signal |
June 29, 1999 |
| The tonality of an audio signal is determined by a method which includes the steps of blockwise frequency transforming a digital input signal x(n) to create a real positive-value representation X(k) of the input signal, where k designates the index of a frequency line, and determining th |
| 5742735 |
Digital adaptive transformation coding method |
April 21, 1998 |
| A digital adaptive transformation coding method for the transmission and/or torage of audio signals, specifically music signals, wherein N scanned values of the audio signal are transformed into M spectral coefficients, and the coefficients are split up into frequency groups, quantized an |
| 5509017 |
Process for simultaneous transmission of signals from N signal sources |
April 16, 1996 |
| A process for simultaneous transmission of signals from N signal sources via a corresponding number of transmission channels, in which the individual signals are divided into blocks and the blocks are transformed into spectral coefficients by transformation or filtering, the spectral |
| 5014318 |
Apparatus for checking audio signal processing systems |
May 7, 1991 |
| Disclosed is an apparatus for checking audio signal processing systems. The apparatus has the following features:the apparatus is provided with a first input connection, to which the input signal of the audio processing system to be checked is transmitted, a second input connection, to w |
