Patent application number | Description | Published |
20080208575 | Split-band encoding and decoding of an audio signal - For enabling an improved reconstruction of a high frequency band of an audio signal in a split-band coding approach, a value representative of a background noise level in an audio signal that is to be encoded is determined. Further, a gain value for the higher frequency band is determined. Further, a correction factor for the determined gain value is determined based on the determined value representative of the background noise level. The correction factor may be used at an encoding end for correcting the gain value before a corresponding codebook index is provided to a decoding end. Alternatively, the correction factor may be provided together with a codebook index for the gain value to a decoding end, and the decoding end may use the correction factor to correct the gain value if appropriate. | 08-28-2008 |
20080275695 | Method and system for pitch contour quantization in audio coding - A method and device for improving coding efficiency in audio coding. From the pitch values of a pitch contour of an audio signal, a plurality of simplified pitch contour segments are generated to approximate the pitch contour, based on one or more pre-selected criteria. The contour segments can be linear or non-linear with each contour segment represented by a first end point and a second end point. If the contour segments are linear, then only the information regarding the end points, instead of the pitch values, are provided to a decoder for reconstructing the audio signal. The contour segment can have a fixed maximum length or a variable length, but the deviation between a contour segment and the pitch values in that segment is limited by a maximum value. | 11-06-2008 |
20100250260 | Encoder - A method including generating from a first audio signal, and via a first encoding and decoding of the first audio signal, a second audio signal; determining at least one energy difference value between the first audio signal and the second audio signal; and calculating at least one signal shaping factor dependent on the at least one energy difference value. | 09-30-2010 |
20100250261 | Encoder - An apparatus including at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to select at least two single frequency components; generate an indicator, the indicator being configured to represent the at least two single frequency components and is configured to be dependent on the frequency separation between the two single frequency components. | 09-30-2010 |
20100274555 | Audio Coding Apparatus and Method Thereof - An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to determine at least one characteristic of the audio signal; divide the audio signal into at least a low frequency portion and a high frequency portion, and generate from the high frequency portion a plurality of high frequency band signals dependent on the at least one characteristic of the audio signal; and determine for each of the plurality of high frequency band signals at least part of the low frequency portion which can represent the high frequency band signal. | 10-28-2010 |
20100280830 | DECODER - A decoder for decoding an encoded audio signal from a first part of the encoded audio signal, wherein the decoder is configured to: receive a first part of an encoded audio signal; determine at least one scaling factor dependent on the first part of the encoded audio signal; scale the first part of the encoded audio signal dependent on the at least one scaling factor to produce a scaled encoded audio signal; and decode the scaled encoded audio signal. | 11-04-2010 |
20100292986 | ENCODER - An encoder is configured to receive an audio signal and output a scaled encoded signal. The encoder is further configured to generate a synthesized audio signal and an encoded signal. The encoder is further configured to scale the encoded signal dependent on the synthesized audio signal. | 11-18-2010 |
20110010169 | Reduced-Complexity Vector Indexing and De-indexing - This invention relates to indexing an input vector contained in a set of vectors of a plurality of sets of vectors. The indexing comprises performing, in case that the input vector is contained in a set of vectors of a pre-defined group of one or more sets of vectors of the plurality of sets of vectors, a specific processing that is adapted to a characteristic of the sets of vectors in the pre-defined group of sets of vectors and is only applicable in case of input vectors contained in sets of vectors with the characteristic. The indexing further comprises performing, in case that the input vector is not contained in a set of vectors of the pre-defined group of sets of vectors, a general processing. The invention further relates to an according determining of a target vector contained in a set of vectors of a plurality of sets of vectors based on an index associated with said target vector. | 01-13-2011 |
20110093276 | APPARATUS - A method comprising receiving at a user equipment encrypted content. The content is stored in said user equipment in an encrypted form. At least one key for decryption of said stored encrypted content is stored in the user equipment. | 04-21-2011 |
20130346073 | AUDIO ENCODER/DECODER APPARATUS - Apparatus comprising a noise estimator configured to determine a noise estimate for a first part of an audio signal, a comparator configured to compare the noise estimate to an energy threshold parameter, a damping factor determiner configured to determine a damping factor for at least one sub band gain value of a second part of an audio signal, wherein the damping factor is dependent on a result of the comparison and a gain modifier configured to apply the damping factor to the sub band gain value. | 12-26-2013 |
20140052440 | CODING THROUGH COMBINATION OF CODE VECTORS - It is inter alia disclosed to determine a single code vector index based on combining at least two code vector indexes, each code vector index being associated with a code vector of a respective codebook. | 02-20-2014 |
20140079225 | METHOD AND APPARATUS FOR ASSOCIATING AUDIO OBJECTS WITH CONTENT AND GEO-LOCATION - An approach is provided for efficiently capturing, processing, presenting, and/or associating audio objects with content items and geo-locations. A processing platform may determine a viewpoint of a viewer of at least one content item associated with a geo-location. Further, the processing platform and/or a content provider may determine at least one audio object associated with the at least one content item, the geo-location, or a combination thereof. Furthermore, the processing platform may process the at least one audio object for rendering one or more elements of the at least one audio object based, at least in part, on the viewpoint. | 03-20-2014 |
20140258864 | AUDIO DRIVER USER INTERFACE - A method for an audio driver user interface comprising: capturing at least two audio signals ( | 09-11-2014 |
20140379108 | VISUAL SPATIAL AUDIO - A method comprising: receiving at least one audio channel signal; receiving at least one user interface input; generating a visualisation of the at least one audio channel signal dependent on the at least one user interface input; and rendering the at least one audio channel signal to generate a rendered audio signal dependent on the at least one user interface input wherein the rendered audio channel signal is substantially synchronised with the visualisation of the at least one audio channel signal. | 12-25-2014 |