Inventor

GEIGER RALF

DE147 patents

⚠️ This page may combine multiple inventors who share the name “GEIGER RALF”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GEIGER RALF

FRAUNHOFER GES FORSCHUNG

Multi-resolution switched audio encoding/decoding scheme

Analysis filterbank, synthesis filterbank, encoder, de-coder, mixer and conferencing system

Apparatus and method for encoding or decoding an audio signal with intelligent gap filling in the spectral domain

Audio encoder, audio decoder and related methods using two-channel processing within an intelligent gap filling framework

Low bitrate audio encoding/decoding scheme having cascaded switches

Apparatus and method for encoding or decoding an audio signal with intelligent gap filling in the spectral domain

Apparatus and method for encoding and decoding an encoded audio signal using temporal noise/patch shaping

Apparatus and method for encoding and decoding an encoded audio signal using temporal noise/patch shaping

Low bitrate audio encoding/decoding scheme having cascaded switches

Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency

Audio encoder for encoding a multichannel signal and audio decoder for decoding an encoded audio signal

Method and apparatus for scalable encoding and method and apparatus for scalable decoding

Apparatus and method for coding a time-discrete audio signal to obtain coded audio data and for decoding coded audio data

Low bitrate audio encoding/decoding scheme having cascaded switches

Low bitrate audio encoding/decoding scheme having cascaded switches

Audio encoder, audio decoder and related methods using two-channel processing within an intelligent gap filling framework

Apparatus and method for decoding or encoding an audio signal using energy information values for a reconstruction band

Audio encoder for encoding a multichannel signal and audio decoder for decoding an encoded audio signal

Apparatus and method for generating an enhanced signal using independent noise-filling identified by an identification vector

Audio encoder for encoding a multichannel signal and audio decoder for decoding an encoded audio signal

Encoder, decoder and methods for encoding and decoding data segments representing a time-domain data stream

Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs

Audio encoding/decoding scheme having a switchable bypass

Device and method for processing at least two input values

Method and device for processing time-discrete audio sampled values

Method and apparatus for obtaining spectrum coefficients for a replacement frame of an audio signal, audio decoder, audio receiver, and system for transmitting audio signals

Audio codec supporting time-domain and frequency-domain coding modes

Low bitrate audio encoding/decoding scheme having cascaded switches

Low bitrate audio encoding/decoding scheme having cascaded switches

Apparatus for encoding or decoding an encoded multichannel signal using a filling signal generated by a broad band filter

GEIGER RALF

Multi-mode audio codec and CELP coding adapted therefore

Audio signal encoder/decoder for use in low delay applications, selectively providing aliasing cancellation information while selectively switching between transform coding and celp coding of frames

Audio encoder, audio decoder, encoded audio information, methods for encoding and decoding an audio signal and computer program

Audio coder/decoder with predictive coding of synthesis filter and critically-sampled time aliasing of prediction domain frames

Apparatus and method for conversion into a transformed representation or for inverse conversion of the transformed representation

GRILL BERNHARD

Audio encoding/decoding scheme having a switchable bypass

Low bitrate audio encoding/decoding scheme having cascaded switches

Low bitrate audio encoding/decoding scheme with common preprocessing

NEUENDORF MAX

Multi-resolution switched audio encoding/decoding scheme

Audio decoder, audio encoder, methods for decoding and encoding an audio signal and computer program

BAYER STEFAN

Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs

Audio signal decoder, audio signal encoder, methods and computer program using a sampling rate dependent time-warp contour encoding

EDLER BERND

Audio transform coding using pitch correction

Device and method for postprocessing spectral values and encoder and decoder for audio signals

FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E V

Multi-mode audio codec and CELP coding adapted therefore

Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs

SCHNELL MARKUS

Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples

FUCHS GUILLAUME

Audio decoder, audio encoder, method for decoding an audio signal, method for encoding an audio signal, computer program and audio signal

BESSETTE BRUNO

Audio signal encoder, audio signal decoder, method for encoding or decoding an audio signal using an aliasing-cancellation

HERRE JUERGEN

Audio encoder for encoding an audio signal having an impulse-like portion and stationary portion, encoding methods, decoder, decoding method, and encoding audio signal