Abstract: An audio processor for processing an audio signal includes an audio signal phase measure calculator configured for calculating a phase measure of an audio signal for a time frame, a target phase measure determiner for determining a target phase measure for the time frame, and a phase corrector configured for correcting phases of the audio signal for the time frame using the calculated phase measure and the target phase measure to obtain a processed audio signal.

Abstract: An audio processor for processing an audio signal includes a target phase measure determiner for determining a target phase measure for the audio signal in a time frame, a phase error calculator for calculating a phase error using a phase of the audio signal in the time frame and the target phase measure, and a phase corrector configured for correcting the phase of the audio signal in the time frame using the phase error.

Abstract: According to an example aspect of the present invention, there is provided a method for forming a binaural filter for a stereo headphone in order to preserve the sound quality of the headphone, whereby the sum of the direct and crosstalk paths from loudspeakers to each ear have flat magnitude responses.

Abstract: According to an example aspect of the present invention, there is provided a Method for regularizing the inversion of a stereo headphone transfer function for headphone equalization, characterized by using the equation for the equalization: H S ? ? 1 - 1 ? ( ? ) = H * ? ( ? ) ? H ? ( ? ) ? 2 + ? ^ ? ( ? ) ? D ? ( ? ) = H * ? ( ? ) ? H ? ( ? ) ? 2 + [ ? ? ( ? ) + ? 2 ? ( ? ) ] ? D ? ( ? ) . in which equation HSI?1(?) is sigma inversion H*(?) is complex conjugate of a response D(?) is a delay filter introduced to produce a causal inverse HRI?1(?) H*(?) a response ?(?) is headphone reproduction bandwidth, ?(?) an estimation of the regularization needed inside that bandwidth.

Abstract: A calculator for determining phase correction data for an audio signal includes a variation determiner for determining a variation of a phase of the audio signal in a first and a second variation mode, a variation comparator for comparing a first variation determined using the first variation mode and a second variation determined using the second variation mode, and a correction data calculator for calculating the phase correction data in accordance with the first variation mode or the second variation mode based on a result of the comparing.

Abstract: A spatial audio processor for providing spatial parameters based on an acoustic input signal has a signal characteristics determiner and a controllable parameter estimator. The signal characteristics determiner is configured to determine a signal characteristic of the acoustic input signal. The controllable parameter estimator for calculating the spatial parameters for the acoustic input signal in accordance with a variable spatial parameter calculation rule is configured to modify the variable spatial parameter calculation rule in accordance with the determined signal characteristic.

Abstract: An apparatus for generating a plurality of parametric audio streams from an input spatial audio signal obtained from a recording in a recording space has a segmentor and a generator. The segmentor is configured for providing at least two input segmental audio signals from the input spatial audio signal, wherein the at least two input segmental audio signals are associated with corresponding segments of the recording space. The generator is configured for generating a parametric audio stream for each of the at least two input segmental audio signals to obtain the plurality of parametric audio streams.

Abstract: An audio processor for processing an audio signal includes an audio signal phase measure calculator configured for calculating a phase measure of an audio signal for a time frame, a target phase measure determiner for determining a target phase measure for the time frame, and a phase corrector configured for correcting phases of the audio signal for the time frame using the calculated phase measure and the target phase measure to obtain a processed audio signal.

Abstract: An audio processor for processing an audio signal includes a target phase measure determiner for determining a target phase measure for the audio signal in a time frame, a phase error calculator for calculating a phase error using a phase of the audio signal in the time frame and the target phase measure, and a phase corrector configured for correcting the phase of the audio signal in the time frame using the phase error.

Abstract: According to an example aspect of the present invention, there is provided a method for forming a binaural filter for a stereo headphone in order to preserve the sound quality of the headphone, whereby the sum of the direct and crosstalk paths from loudspeakers to each ear have flat magnitude responses.

Abstract: An audio processor for processing an audio signal includes a target phase measure determiner for determining a target phase measure for the audio signal in a time frame, a phase error calculator for calculating a phase error using a phase of the audio signal in the time frame and the target phase measure, and a phase corrector configured for correcting the phase of the audio signal in the time frame using the phase error.

Abstract: According to an example aspect of the present invention, there is provided a Method for regularizing the inversion of a stereo headphone transfer function for headphone equalization, characterized by using the equation for the equalization: H S ? ? 1 - 1 ? ( ? ) = H * ? ( ? ) ? H ? ( ? ) ? 2 + ? ^ ? ( ? ) ? D ? ( ? ) = H * ? ( ? ) ? H ? ( ? ) ? 2 + [ ? ? ( ? ) + ? 2 ? ( ? ) ] ? D ? ( ? ) . in which equation HSI?1(?) is sigma inversion H*(?) is complex conjugate of a response D(?) is a delay filter introduced to produce a causal inverse HRI?1(?) H*(?) a response ?(?) is headphone reproduction bandwidth, ?(?) an estimation of the regularization needed inside that bandwidth.

Abstract: An audio processor for processing an audio signal includes an audio signal phase measure calculator configured for calculating a phase measure of an audio signal for a time frame, a target phase measure determiner for determining a target phase measure for the time frame, and a phase corrector configured for correcting phases of the audio signal for the time frame using the calculated phase measure and the target phase measure to obtain a processed audio signal.

Abstract: A decoder for decoding an audio signal includes a first target spectrum generator for generating a target spectrum for a first time frame of a subband signal of the audio signal using first correction data. A first phase corrector for corrects a phase of the subband signal in the first time frame of the audio signal determined with a phase correction algorithm, the correction being performed by reducing a difference between a measure of the subband signal in the first time frame of the audio signal and the target spectrum. An audio subband signal calculator calculates the audio subband signal for the first time frame using a corrected phase for the time frame and for calculating audio subband signals for a second time frame different from the first time frame using the measure of the subband signal in the second time frame or using a corrected phase calculation in accordance with a further phase correction algorithm different from the phase correction algorithm.

Abstract: Method for spatial filtering of at least one sound signal (M0; W(n)) includes the steps of: generation of a first, a second and a third captured sound signal by capturing of the respective sound signals by microphones characterized by directivity patterns of different orders; performing a short-time Fourier transformation of the captured, sound signal s; measuring a cross-pattern correlation or a cross-pattern coherence towards a desired direction ([phi]); calculation of a gain factor (G+) using a cross-pattern correlation based on time-averaged correlation or coherence between the first captured sound signal and the second captured sound signal; and applying the gain factor (G+) to the corresponding time-frequency positions in the third captured sound, signal (2.3; M0; W(n)). Independent patent claims also for a system and computer readable storage medium.

Abstract: A spatial audio processor for providing spatial parameters based on an acoustic input signal has a signal characteristics determiner and a controllable parameter estimator. The signal characteristics determiner is configured to determine a signal characteristic of the acoustic input signal. The controllable parameter estimator for calculating the spatial parameters for the acoustic input signal in accordance with a variable spatial parameter calculation rule is configured to modify the variable spatial parameter calculation rule in accordance with the determined signal characteristic.

Abstract: An audio processor for processing an audio signal includes a target phase measure determiner for determining a target phase measure for the audio signal in a time frame, a phase error calculator for calculating a phase error using a phase of the audio signal in the time frame and the target phase measure, and a phase corrector configured for correcting the phase of the audio signal in the time frame using the phase error.

Abstract: An audio processor for processing an audio signal includes an audio signal phase measure calculator configured for calculating a phase measure of an audio signal for a time frame, a target phase measure determiner for determining a target phase measure for the time frame, and a phase corrector configured for correcting phases of the audio signal for the time frame using the calculated phase measure and the target phase measure to obtain a processed audio signal.

Abstract: A decoder for decoding an audio signal includes a first target spectrum generator for generating a target spectrum for a first time frame of a subband signal of the audio signal using first correction data. A first phase corrector for corrects a phase of the subband signal in the first time frame of the audio signal determined with a phase correction algorithm, the correction being performed by reducing a difference between a measure of the subband signal in the first time frame of the audio signal and the target spectrum. An audio subband signal calculator calculates the audio subband signal for the first time frame using a corrected phase for the time frame and for calculating audio subband signals for a second time frame different from the first time frame using the measure of the subband signal in the second time frame or using a corrected phase calculation in accordance with a further phase correction algorithm different from the phase correction algorithm.

Abstract: A calculator for determining phase correction data for an audio signal includes a variation determiner for determining a variation of a phase of the audio signal in a first and a second variation mode, a variation comparator for comparing a first variation determined using the first variation mode and a second variation determined using the second variation mode, and a correction data calculator for calculating the phase correction data in accordance with the first variation mode or the second variation mode based on a result of the comparing.