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Audio processing method and audio processing device

A technology for audio processing and audio signals, applied in the computer field

Active Publication Date: 2017-11-17
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the embodiments of the present invention is to provide an audio processing method and an audio processing device to solve how to reprocess the 3D sound in the prior art, so that the sound seems to come from the surrounding space, so as to better simulate or Technical issues with recreating the sound of a specific real-world environment

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  • Audio processing method and audio processing device

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Embodiment Construction

[0076] The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

[0077] In the field of audio processing, classic artificial reverberation models include Schroeder model or Moorer model. For example, if figure 1 The schematic diagram of the Schroeder model structure provided by the embodiment of the present invention shown, wherein x (n) is an input audio signal sequence (equivalent to a sound sequence), and C1, C2, C3, and C4 are comb filters for simulating early reflections , A1, A2 are all-pass filters used to enhance the density of late reflections. However, the reverberation effect that can be expressed by the y(n) output of the reverberator with the structure of the classic artificial reverberation model is false, especially when simulating a slightly larger room, you can hear the "metal sound", and generally this type of reverberator is more suitable As an e...

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Abstract

The invention discloses an audio processing method, comprising that the convolution calculation is performed on an audio signal sequence filtered by time-domain head-related impulse response filtering processing and a first impulse response sequence h(n) to obtain audio signal data after the convolution calculation; the first impulse response sequence h(n) is characterized in that the duration experienced by the audio energy attenuation of 60dB is a first duration; and the range of values of the first duration is [360 milliseconds, 440 milliseconds]. The invention also discloses an audio processing device and solves the technical problem of how to re-process a three-dimensional sound so that the sound seems to come from a surrounding space to better simulate or reconstruct the effect of the sound coming from a specific real environment in the prior art.

Description

technical field [0001] The invention relates to the field of computers, in particular to an audio processing method and an audio processing device. Background technique [0002] The head-related transfer function or head-related transfer function HRTF (Head Related Transfer Function), is a sound localization algorithm, corresponding to the head-related impulse response (Head Related Impulse Response, HRIR) in the time domain. HRTF reflects the filtering effect of the external ear, head, and trunk on the sound signal when the sound signal entering the human ear is different. Based on the HRTF principle, the technology of using dual channels to realize virtual 3D stereo is widely used in TV, compact disc (Compact Disc, CD), audio-visual disc (Video Compact Disc, VCD), laser disc (Laser disc, LD), high-density digital video disc (Digital Video Disc, DVD), combination audio, home theater, game consoles, multimedia computers and car audio systems have great application prospects...

Claims

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Application Information

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IPC IPC(8): G10L19/008G10L19/26H04S1/00
CPCG10L19/008G10L19/26H04S1/007
Inventor 王天宝甄广启李岳鹏郭亮
Owner TENCENT TECH (SHENZHEN) CO LTD
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