Patent application number | Description | Published |
20100198589 | AUDIO CODING APPARATUS, AUDIO DECODING APPARATUS, AUDIO CODING AND DECODING APPARATUS, AND TELECONFERENCING SYSTEM - The delay in a multi-channel audio coding apparatus and a multi-channel audio decoding apparatus is reduced. The audio coding apparatus includes: a downmix signal generating unit ( | 08-05-2010 |
20110029113 | COMBINATION DEVICE, TELECOMMUNICATION SYSTEM, AND COMBINING METHOD - A combination device ( | 02-03-2011 |
20110051940 | DECODING DEVICE, CODING AND DECODING DEVICE, AND DECODING METHOD - There was no method of positioning virtual sound sources of object signals obtained from received coded object information, in a listening space on a receiving site side. Provided are an object decoding unit ( | 03-03-2011 |
20110182432 | CODING APPARATUS AND DECODING APPARATUS - A coding apparatus which suppresses an extreme increase in a bit rate, includes: a downmixing and coding unit ( | 07-28-2011 |
20110268279 | AUDIO ENCODING DEVICE, DECODING DEVICE, METHOD, CIRCUIT, AND PROGRAM - Provided is an encoding device ( | 11-03-2011 |
20120022676 | AUDIO SIGNAL PROCESSING APPARATUS, AUDIO CODING APPARATUS, AND AUDIO DECODING APPARATUS - To provide an audio signal processing apparatus which can perform, with low operation amount, audio signal processing that is either time stretch and/or compression processing or frequency modulation processing. The audio signal processing apparatus is intended to transform an input audio signal sequence using a predetermined adjustment factor. The audio signal processing apparatus includes a filter bank ( | 01-26-2012 |
20120136670 | BANDWIDTH EXTENSION METHOD, BANDWIDTH EXTENSION APPARATUS, PROGRAM, INTEGRATED CIRCUIT, AND AUDIO DECODING APPARATUS - To provide a bandwidth extension method which allows reduction of computation amount in bandwidth extension and suppression of deterioration of quality in the bandwidth to be extended. In the bandwidth extension method: a low frequency bandwidth signal is transformed into a QMF domain to generate a first low frequency QMF spectrum; pitch-shifted signals are generated by applying different shifting factors on the low frequency bandwidth signal; a high frequency QMF spectrum is generated by time-stretching the pitch-shifted signals in the QMF domain; the high frequency QMF spectrum is modified; and the modified high frequency QMF spectrum is combined with the first low frequency QMF spectrum. | 05-31-2012 |
20130090929 | HYBRID AUDIO ENCODER AND HYBRID AUDIO DECODER - Provided are a new hybrid audio decoder and a new hybrid audio encoder having block switching for speech signals and audio signals. Currently, very low bitrate audio coding methods for speech and audio signal are proposed. These audio coding methods cause very long delay. Generally, in coding an audio signal, algorithm delay tends to be long to achieve higher frequency resolution. In coding a speech signal, the delay needs to be reduced because the speech signal is used for telecommunication. To balance fine coding quality for these two kinds of input signals with very low bitrate, this invention provides a combination of a low delay filter bank like AAC-ELD and a CELP coding method. | 04-11-2013 |