摘要:
It is inter alia disclosed to provide a left signal representation associated with a left audio channel and a right signal representation associated with a right audio channel, each of the left and right signal representations being associated with a plurality of subbands of a frequency range, and to provide directional information associated with at least one subband of the plurality of subbands associated with the left and the right signal representation, the directional information being at least partially indicative of a direction of a sound source with respect to the left and right audio channel.
摘要:
It is inter alia disclosed to provide a left signal representation associated with a left audio channel and a right signal representation associated with a right audio channel, each of the left and right signal representations being associated with a plurality of subbands of a frequency range, and to provide directional information associated with at least one subband of the plurality of subbands associated with the left and the right signal representation, the directional information being at least partially indicative of a direction of a sound source with respect to the left and right audio channel.
摘要:
An apparatus comprising: a directional analyser configured to determine a directional component of at least two audio signals; an estimator configured to determine at least one virtual position or direction relative to the actual position of the apparatus; and a signal generator configured to generate at least one further audio signal dependent on the at least one virtual position or direction relative to the actual position of the apparatus and the directional component of at least two audio signals.
摘要:
An apparatus comprising a channel analyser configured to analyse an audio signal comprising at least two audio channels to determine at least one parameter associated with a difference between the at least two audio channels; an encoding mode determiner configured to select a multichannel audio signal encoding dependent on the at least one parameter; and a channel encoder configured to encode the audio signal with the multichannel audio signal encoding.
摘要:
A method and related apparatus for generating a scalable layered audio stream, whereby the method comprises: encoding an input audio signal with a low bitrate audio encoding technique to generate a base layer of a layered data stream representing the audio signal; and producing a plurality of enhancement layers into the layered data stream, at least one of the enhancement layers comprising a coded version of at least a part of the input audio signal rendering at least one of the lower layers comprising low bitrate audio encoded data redundant for decoding the audio signal.
摘要:
The present invention provides an arrangement, e.g. a method, an apparatus and a computer program. The arrangement comprises obtaining information indicative of spatial positions of one or more sound sources within an audio image of a composite audio signal, obtaining information indicative of the types of the one or more sound sources, determining, for each of the one or more sound sources, a position in a display of the apparatus indicative of the spatial position of the sound source and causing an apparatus to display an item representing the sound source in the determined position in the display, wherein the item representing the sound source is determined on basis of the type of the sound source. The arrangement further comprises receiving an indication of a user action associated with an item indicative of a first sound source, determining an indication of a user selected modification of the audio image on basis of the user action, and modifying the composite audio signal in accordance with the user selected modification.
摘要:
A method comprising: receiving input signals for multiple channels; and parameterizing the received input signals into parameters defining multiple different object spectra and defining a distribution of the multiple different object spectra in the multiple channels.
摘要:
An apparatus comprising: a first audio signal analyzer configured to analyze a first audio signal to determine at least one audio source, wherein the at least one audio source has a virtual location; a second audio signal analyzer configured to analyze a second audio signal to determine at least one localized audio source, wherein the second audio signal is generated from the apparatus audio environment; and a repositioner configured to reposition the virtual location of the at least one audio source dependent on the at least one localized audio source.
摘要:
An apparatus comprising: a first audio signal analyser configured to analyse a first audio signal to determine at least one audio source, wherein the at least one audio source has a virtual location; a second audio signal analyser configured to analyse a second audio signal to determine at least one localised audio source, wherein the second audio signal is generated from the apparatus audio environment; and a repositioner configured to reposition the virtual location of the at least one audio source dependent on the at least one localised audio source.
摘要:
A method and system for coding audio signals in a multi-channel sound system, wherein a plurality of MDCT units are used to reduce the audio signals for providing a plurality of MDCT coefficients. The MDCT coefficients are quantized according to the masking threshold calculated from a psychoacoustic model and a plurality of INT (integer-to-integer) DCT modules are used to remove the cross-channel redundancy in the quantized MDCT coefficients. The output from the INT-DCT modules is Huffman coded and written to a bitstream for transmission or storage.