Inventor · Erlangen, DE

Ralf Geiger

148Patents
15h-index
73Co-inventors
89Inventor score

Filing activity: May 28, 2002 → Nov 7, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US8447620B2 Multi-resolution switched audio encoding/decoding scheme Physics 50 Active
US8321210B2 Audio encoding/decoding scheme having a switchable bypass Physics 40 Active
US7343287B2 Method and apparatus for scalable encoding and method and apparatus for scalable decoding Physics 32 Expired
US7275036B2 Apparatus and method for coding a time-discrete audio signal to obtain coded audio data and for decoding coded audio data Physics 31 Expired
US9015041B2 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 Physics 31 Active
US8036903B2 Analysis filterbank, synthesis filterbank, encoder, de-coder, mixer and conferencing system Physics 27 Active
US8744843B2 Multi-mode audio codec and CELP coding adapted therefore Physics 26 Active
US9043215B2 Multi-resolution switched audio encoding/decoding scheme Physics 25 Active
US9129597B2 Audio signal decoder, audio signal encoder, methods and computer program using a sampling rate dependent time-warp contour encoding Physics 25 Active
US8494865B2 Audio decoder, audio encoder, method for decoding an audio signal, method for encoding an audio signal, computer program and audio signal Physics 23 Active
US8484038B2 Audio signal encoder, audio signal decoder, method for encoding or decoding an audio signal using an aliasing-cancellation Physics 23 Active
US8804970B2 Low bitrate audio encoding/decoding scheme with common preprocessing Physics 21 Active
US8630862B2 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 Physics 19 Active
US8700388B2 Audio transform coding using pitch correction Physics 18 Active
US8762159B2 Audio encoder, audio decoder, encoded audio information, methods for encoding and decoding an audio signal and computer program Physics 16 Active
US7873227B2 Device and method for processing at least two input values Electricity 15 Active
US8438015B2 Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples Physics 14 Active
US8930198B2 Low bitrate audio encoding/decoding scheme having cascaded switches Physics 13 Active
US8959017B2 Audio encoding/decoding scheme having a switchable bypass Physics 13 Active
US8595019B2 Audio coder/decoder with predictive coding of synthesis filter and critically-sampled time aliasing of prediction domain frames Physics 12 Active
US8321207B2 Device and method for postprocessing spectral values and encoder and decoder for audio signals Physics 11 Active
US8706480B2 Audio encoder for encoding an audio signal having an impulse-like portion and stationary portion, encoding methods, decoder, decoding method, and encoding audio signal Physics 9 Active
US10319384B2 Low bitrate audio encoding/decoding scheme having cascaded switches Physics 9 Active
US8457975B2 Audio decoder, audio encoder, methods for decoding and encoding an audio signal and computer program Physics 9 Active
US7512539B2 Method and device for processing time-discrete audio sampled values Physics 7 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.