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| Application No. | Application Title | Issue Date |
| 20060056640 | Configurable recursive digital filter for processing television audio signals A television audio signal encoder includes a device that sums a left channel audio signal and a right channel audio signal to produce a sum signal. The device also subtracts one of the left and right audio signals from the other to produce a difference signal. The encod... | 03/16/2006 |
| 20060045277 | Multichannel spectral mapping audio encoding apparatus and method with dynamically varying mapping coefficients A method and circuit for deriving a set of multichannel audio signals from a conventional monaural or stereo audio signal uses an auxiliary multichannel spectral mapping data stream. Audio can be played back in stereo and multichannel formats from a conventional stereo ... | 03/02/2006 |
| 20060023891 | Efficient and scalable parametric stereo coding for low bitrate audio coding applications The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which ar... | 02/02/2006 |
| 20060013405 | Multichannel audio data encoding/decoding method and apparatus A multichannel audio data encoding and/or decoding method and apparatus. The encoding method includes: encoding mono and/or stereo audio data; and encoding extended multichannel audio data other than the mono and/or stereo audio data. The decoding method includes: decod... | 01/19/2006 |
| 20050259828 | Multi-channel compatible stereo recording An encoder for mixing a plurality of independent mono audio channels into a stereo recording and generating a restricted set of additional parameters used to master an audio track of a storage device is described. The plurality of independent mono audio channels are con... | 11/24/2005 |
| 20050232433 | Configurable filter for processing television audio signals A television audio signal encoder includes a matrix that sums a left channel audio signal and a right channel audio signal to produce a sum signal. The matrix also subtracts one of the left and right audio signals from the other to produce a difference signal. The encod... | 10/20/2005 |
| 20050226426 | Parametric multi-channel audio representation Multi-channel audio signals are coded into a monaural audio signal and information allowing to recover the multi-channel audio signal from the monaural audio signal and the information. The information is generated by determining a first portion of the information for a... | 10/13/2005 |
| 20050195981 | Frequency-based coding of channels in parametric multi-channel coding systems For a multi-channel audio signal, parametric coding is applied to different subsets of audio input channels for different frequency regions. For example, for a 5.1 surround sound signal having five regular channels and one low-frequency (LFE) channel, binaural cue codin... | 09/08/2005 |
| 20050157884 | Audio encoding apparatus and frame region allocation circuit for audio encoding apparatus An audio encoding apparatus for stereo audio encoding an L-channel PCM signal and an R-channel PCM signal efficiently allocates encoded data of the L-channel and the R-channel without varying an existing format and performs MS stereo on/off control and controls of a bit... | 07/21/2005 |
| 20050141722 | Signal processing Sum/difference coding of a compatible signal, typically in case of a dominant centre signal or dominant surround situation of a multi-channel audio stream to be decoded by both a stereo decoder and by a multi-channel decoder, to provide improved encoding of multiple inp... | 06/30/2005 |
| 20050135630 | BTSC encoder and integrated circuit A BTSC encoder includes dual channel ADC, sync separator, audio processor, filtering device, and a composite audio signal generating device. The filtering device includes a first filter for providing a filtered L+R signal, and a second filter for providing at least one ... | 06/23/2005 |
| 20050053242 | Efficient and scalable parametric stereo coding for low bitrate applications The present invention provides improvements to prior art audio codecs that generate a stereo-illusion through post-processing of a received mono signal. These improvements are accomplished by extraction of stereo-image describing parameters at the encoder side, which ar... | 03/10/2005 |
| 20050036627 | Mechanism for using the allpass decomposition architecture for the cauer low pass filter used in a BTSC An BTSC encoder with an improved digital filter structure substantially implemented on a single CMOS integrated circuit is described. By cascading first and second order allpass filter structures to form a higher order digital filter, such as a Cauer low pass filter, li... | 02/17/2005 |
