Patents Assigned to KNONINKLIJKE PHILIPS ELECTRONICS N.V.
  • Publication number: 20070067162
    Abstract: Encoding an audio signal is provided wherein the audio signal includes a first audio channel and a second audio channel, the encoding comprising subband filtering each of the first audio channel and the second audio channel in a complex modulated filterbank to provide a first plurality of subband signals for the first audio channel and a second plurality of subband signals for the second audio channel, downsampling each of the subband signals to provide a first plurality of downsampled subband signals and a second plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, deriving spatial parameters from the sub-subband signals and from those downsampled subband signals that are not further subband filtered, and deriving a single channel audio signal comprising derived subband signals derived from the first plurality of downsampled subband signals and the second plurality of
    Type: Application
    Filed: October 28, 2004
    Publication date: March 22, 2007
    Applicant: KNONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Lars Villemoes, Per Ekstrand, Heiko Purnhagen, Erik Schuijers, Fransiscus de Bont