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System and method and computer readable medium for processing an input audio signal

A technology for inputting audio and high-frequency signals, which is applied in signal processing, binaural systems, stereo systems, etc., and can solve problems such as loss or distortion of sound field space

Active Publication Date: 2021-08-13
BOOMCLOUD 360 INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When mismatched drivers are used to reproduce an audio signal, the sense of space in the soundstage may be lost or distorted

Method used

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  • System and method and computer readable medium for processing an input audio signal
  • System and method and computer readable medium for processing an input audio signal
  • System and method and computer readable medium for processing an input audio signal

Examples

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Embodiment Construction

[0018] Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the various embodiments described. However, the described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the embodiments.

[0019] overview

[0020] Example embodiments relate to providing virtual stereo audio reproduction (herein referred to as "VS-X") for a non-ideally configured stereo rendering system employing parameters such as frequency response, output power, directivity Drives that are moderately to severely mismatched in any combination thereof. VS-X is an audio signal processing algorithm designed to restore and enhance the perceived spati...

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PUM

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Abstract

Embodiments relate to audio processing systems that adjust for speakers that are mismatched, eg, in frequency response, output power, directivity, and the like. For example, mobile devices may include earpiece speakers and miniature microphones. The audio processing system may include a crossover network that separates the 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 mismatched speakers. The low frequency signal is processed using a parametric bandpass filter and a first gain to generate a low frequency resonator signal, and the low frequency signal is processed using a second gain to generate a low frequency through signal. The processed low frequency signal is provided to the miniature loudspeaker by combining with one of the left or right channel of the processed high frequency signal.

Description

technical field [0001] The subject matter described herein relates to audio processing, and more particularly to the configuration and operation of enhanced virtual stereo reproduction for unmatched transaural loudspeakers. Background technique [0002] Audio signals may allow a listener to perceive a sense of space in the sound field. However, many non-ideally configured stereo rendering systems employ moderately to severely mismatched drivers that are mismatched in frequency response, output power, directivity, or any combination thereof. One such common example system might be a mobile phone or tablet capable of stereo audio playback but employing only a "wideband" miniature amplifier relative to a bandwidth with low frequency attenuation below 1000Hz Limited earpiece drivers transmit in quadrature. When mismatched drivers are used to reproduce an audio signal, the sense of space in the soundstage may be lost or distorted. Contents of the invention [0003] Embodimen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04S7/00H04S3/00
CPCH04R5/04H04S1/007H04R3/04H04S1/002H04S7/302H04R2499/11H04S2420/01H04S2420/07H04S7/305H04S3/008H04S2420/13G06F1/1605H04B3/32H04R1/025H04R5/02H04R5/033H04R2430/03H04S7/307H04S2400/13
Inventor 扎卡里·塞尔迪斯
Owner BOOMCLOUD 360 INC