Crosstalk Cancellation B-Chain
AssigneeBoomcloud 360, Inc.
InventorZachary Seldess
Life of this patent
Estimating the term…
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.
Claims23
A system for enhancing an input audio signal for a left speaker and a right speaker, comprising:
- a spatial enhancement processor configured to generate a spatially enhanced signal by gain adjusting spatial components and nonspatial components of the input audio signal;
- and
- a b-chain processor, configured to:
- determine asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position;
- and
- generate 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.
A non-transitory computer readable medium storing instructions that, when executed by a processor, configures the processor to:
- generate a spatially enhanced signal by gain adjusting spatial components and nonspatial components of an input audio signal including a left input channel for a left speaker and a right input channel for a right speaker;
- determine asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position;
- and
- generate 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.
A method for enhancing an input audio signal for a left speaker and a right speaker, comprising:
- generating a spatially enhanced signal by gain adjusting spatial components and nonspatial components of the input audio signal including a left input channel for the left speaker and a right input channel for the right speaker;
- determining asymmetries between the left speaker and the right speaker in frequency response, time alignment, and signal level for a listening position;
- and
- generating 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.
Dependencies are inferred from the claim text.