Abstract: A device renders enhanced audio based on properties of an audio rendering system. For example, audio rendering system information of an audio rendering system associated with the device is used to determine an audio enhancement optimized for the audio rendering system. The OS of the device (e.g., a mobile phone) is queried to determine the audio rendering system information. The audio rendering system information is used to determine an audio enhancement, such as by querying a database storing associations between rendering system information and audio enhancements. The audio enhancement may include, for example, one or more types of audio processing (e.g., subband spatial processing, crosstalk processing, etc.) and particular parameters for the audio processing. The audio enhancement is applied to an audio signal to generate an enhanced audio signal that is provided to the audio rendering system.

Abstract: A system processes an audio signal using spectrally orthogonal sound components. The system includes a circuitry that generates a mid component and a side component from a left channel and a right channel of the audio signal. The circuitry generates a hyper mid component including spectral energy of the side component removed from spectral energy of the mid component. The circuitry filters the hyper mid component, such as to provide spatial cue processing including panning or binaural processing, dynamic range processing, or other types of processing. The circuitry generates a left output channel and a right output channel using the filtered hyper mid component.

Abstract: A system processes an audio signal using spectrally orthogonal sound components. The system includes a circuitry that generates a mid component and a side component from a left channel and a right channel of the audio signal. The circuitry generates a hyper mid component including spectral energy of the side component removed from spectral energy of the mid component, and generate a residual mid component including spectral energy of the hyper mid component removed from the spectral energy of the mid component. The circuitry filters subbands of the residual mid component, such as to apply a subband spatial processing. The circuitry generates a left output channel and a right output channel using the filtered subbands of the residual mid component.

Abstract: An audio system processes a multi-channel input audio signal into a stereo signal for left and right speakers, while preserving the spatial sense of the sound field of the input audio signal. The multi-channel input audio signal includes a first left-right channel pair including a left input channel and a right input channel, and a second left-right channel pair including a left peripheral input channel and a right peripheral input channel. Subband spatial processing may be applied to the first and second left-right channel pairs. A first crosstalk processing is applied to the first left-right channel pair to generate first crosstalk processed channels. A second crosstalk processing is applied to the second left-right channel pair to generate second crosstalk processed channels. A left output channel and a right output channel are generated from the first and second crosstalk processed channels. The crosstalk processing may include crosstalk cancellation or crosstalk simulation.

Abstract: Embodiments relate to an audio processing system that adjusts for unmatched speakers, such as by frequency response, output power, directionality, etc. For example, a mobile device may include an earpiece speaker and a micro-loudspeaker. The audio processing system may include a crossover network that separates an input audio signal into a low frequency signal and a high frequency signal. Subband spatial processing and b-chain processing are applied to the high frequency signal to spatially enhance the input signal, and adjust the input signal for the unmatched speakers. The low frequency signal is processed using a parametric band-pass filter and a first gain to generate a low frequency resonator signal, and a second gain to generate a low frequency passthrough signal. The processed low frequency signals are provided to the micro-loudspeaker by combination with one of a left channel or a right channel of the processed high frequency signal.

Abstract: An audio system processes a multi-channel input audio signal into a stereo signal for left and right speakers, while preserving the spatial sense of the sound field of the input audio signal. The multi-channel input audio signal includes a first left-right channel pair including a left input channel and a right input channel, and a second left-right channel pair including a left peripheral input channel and a right peripheral input channel. Subband spatial processing may be applied to the first and second left-right channel pairs. A first crosstalk processing is applied to the first left-right channel pair to generate first crosstalk processed channels. A second crosstalk processing is applied to the second left-right channel pair to generate second crosstalk processed channels. A left output channel and a right output channel are generated from the first and second crosstalk processed channels. The crosstalk processing may include crosstalk cancellation or crosstalk simulation.

Abstract: An audio signal is compressed in an audio coordinate system using gain factors applied in another audio coordinate system. A first component and a second component in a first audio coordinate system is generated from a third component and a fourth component of the audio signal in a second audio coordinate system. An amplitude threshold defining a level for each of the third component and the fourth component for applying compression is determined. A gain factor for the first component is generated using a compression ratio. The gain factor is applied to the first component when one of the third component or the fourth component exceeds the amplitude threshold to generate an adjusted first component. A first output channel and a second output channel in the second audio coordinate system is generated using the adjusted first component and the second component in the first audio coordinate system.

Abstract: An audio system processes a multi-channel surround sound input audio signal into a stereo signal for left and right speakers, while preserving the spatial sense of the sound field of the input audio signal. A subband spatial processing is performed on a left input channel, a right input channel, a left peripheral input channel, and a right peripheral input channel of the input signal to create spatially enhanced channels. Binaural filters may be applied to the peripheral input channels or the spatially enhanced channels. Crosstalk cancellation is performed on the spatially enhanced channels to create a left crosstalk cancelled channel and a right crosstalk cancelled channel.

Abstract: Embodiments relate to providing a conference for client devices with spatialized audio. Input audio streams are received from the client devices. For each client device, placement data defining spatial locations of other client devices within a sound field is determined. A mixed stream including a left mixed channel and a right mixed channel for the client device is generated by mixing and panning input audio streams of the other client devices according to the placement data. A spatially enhanced stream including a left enhanced channel for a left speaker and a right enhanced channel for a right speaker is generated by applying subband spatial processing and crosstalk processing on the left mixed channel and the right mixed channel of the mixed stream.

Abstract: Embodiments relate to b-chain processing for a spatially enhanced audio signal. A system includes a b-chain processor. The b-chain processor determines asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position; and generates a left output channel for the left speaker and a right output channel for the right speaker by: applying an N-band equalization to the spatially enhanced signal to adjust for the asymmetry in the frequency response; applying a delay to the spatially enhanced signal to adjust for the asymmetry in the time alignment; and applying a gain to the spatially enhanced signal to adjust for the asymmetry in the signal level.

Abstract: Embodiments herein are primarily described in the context of a system, a method, and a non-transitory computer readable medium for producing a sound with enhanced spatial detectability and reduced crosstalk interference. The audio processing system receives an input audio signal, and performs an audio processing on the input audio signal to generate an output audio signal. In one aspect of the disclosed embodiments, the audio processing system divides the input audio signal into different frequency bands, and enhances a spatial component of the input audio signal with respect to a nonspatial component of the input audio signal for each frequency band.

Abstract: An audio system provides for soundstage-conserving channel summation. The system includes circuitry that generates a first rotated component and a second rotated component by rotating a pair of audio signal components. The circuitry generates left quadrature components that are out of phase with each other using the first rotated component and generates right quadrature components that are out of phase with each other using the second rotated component. The circuitry generates orthogonal correlation transform (OCT) components based on the left and right quadrature components. Each OCT component including a weighted combination of a left quadrature component and a right quadrature component. The circuitry generates a mono output channel using one or more of the OCT components.

Abstract: An audio system provides for crosstalk processing and crosstalk compensation processing of an audio signal. The crosstalk processing may include crosstalk cancellation processing or crosstalk simulation processing. A crosstalk processed signal is generated by applying the crosstalk processing to a side channel of the left and right channels, with a mid channel of the left and right channels bypassing the crosstalk processing. The crosstalk processed signal and the mid channel that bypasses crosstalk processing is used to generate a left output channel and a right output channel. In some embodiments, a crosstalk compensated signal is generated by applying crosstalk compensation processing to the side channel. The crosstalk compensated signal adjusts for spectral defects caused by the crosstalk processing. The crosstalk processing and crosstalk compensation processing may be applied in different orders.

Abstract: Embodiments relate to providing a conference for client devices with spatialized audio. Input audio streams are received from the client devices. For each client device, placement data defining spatial locations of other client devices within a sound field is determined. A mixed stream including a left mixed channel and a right mixed channel for the client device is generated by mixing and panning input audio streams of the other client devices according to the placement data. A spatially enhanced stream including a left enhanced channel for a left speaker and a right enhanced channel for a right speaker is generated by applying subband spatial processing and crosstalk processing on the left mixed channel and the right mixed channel of the mixed stream.

Abstract: An audio system provides for spatial enhancement, crosstalk processing, and crosstalk compensation of an input audio signal. The crosstalk compensation compensates for spectral defects caused by the application of the crosstalk processing to a spatially enhanced signal. The crosstalk compensation may be performed prior to the crosstalk processing, after the crosstalk processing, or in parallel with the crosstalk processing. The crosstalk compensation includes applying filters to the mid and side components of the left and right input channels to compensate for spectral defects from crosstalk processing of the audio signal. The crosstalk processing may include crosstalk simulation or crosstalk cancellation. In some embodiments, the crosstalk compensation may be integrated with a subband spatial processing that spatially enhances the audio signal.

Abstract: An audio system provides for crosstalk processing and crosstalk compensation processing of an audio signal. The crosstalk processing may include crosstalk cancellation processing or crosstalk simulation processing. A crosstalk processed signal is generated by applying the crosstalk processing to a side channel of the left and right channels, with a mid channel of the left and right channels bypassing the crosstalk processing. The crosstalk processed signal and the mid channel that bypasses crosstalk processing is used to generate a left output channel and a right output channel. In some embodiments, a crosstalk compensated signal is generated by applying crosstalk compensation processing to the side channel. The crosstalk compensated signal adjusts for spectral defects caused by the crosstalk processing. The crosstalk processing and crosstalk compensation processing may be applied in different orders.

Abstract: An audio signal is limited in an audio coordinate system using gain factors applied in another audio coordinate system. A first component and a second component in a first audio coordinate system is generated from a third component and a fourth component of the audio signal in a second audio coordinate system. An amplitude threshold defining a maximum level for each of the third component and the fourth component is determined. One or more gain factors are applied to each of the third component and the fourth component to generate an adjusted third component and an adjusted fourth component, and a first output channel and a second output channel in the second audio coordinate system are generated from the adjusted third and fourth components. The first and second output channels are each limited below the amplitude threshold from application of the one or more gain factors.

Abstract: Embodiments relate to an audio processing system that adjusts for unmatched speakers, such as by frequency response, output power, directionality, etc. For example, a mobile device may include an earpiece speaker and a micro-loudspeaker. The audio processing system may include a crossover network that separates an input audio signal into a low frequency signal and a high frequency signal. Subband spatial processing and b-chain processing are applied to the high frequency signal to spatially enhance the input signal, and adjust the input signal for the unmatched speakers. The low frequency signal is processed using a parametric band-pass filter and a first gain to generate a low frequency resonator signal, and a second gain to generate a low frequency passthrough signal. The processed low frequency signals are provided to the micro-loudspeaker by combination with one of a left channel or a right channel of the processed high frequency signal.

Abstract: Embodiments relate to audio processing for opposite facing speaker configurations that results in multiple optimal listening regions around the speakers. A system includes a left speaker and a right speaker in an opposite facing speaker configuration, and a crosstalk cancellation processor connected with the left speaker and the right speaker. The crosstalk cancellation processor applies a crosstalk cancellation to an input audio signal to generate left and right output channels. The left output channel is provided to the left speaker and the right output channel is provided to the right speaker to generate sound including multiple crosstalk cancelled listening regions that are spaced apart.

Abstract: An audio system provides for spatial enhancement, crosstalk processing, and crosstalk compensation of an input audio signal. The crosstalk compensation compensates for spectral defects caused by the application of the crosstalk processing to a spatially enhanced signal. The crosstalk compensation may be performed prior to the crosstalk processing, after the crosstalk processing, or in parallel with the crosstalk processing. The crosstalk compensation includes applying filters to the mid and side components of the left and right input channels to compensate for spectral defects from crosstalk processing of the audio signal. The crosstalk processing may include crosstalk simulation or crosstalk cancellation. In some embodiments, the crosstalk compensation may be integrated with a subband spatial processing that spatially enhances the audio signal.