Audio signal processing device and method for reproducing binaural signals
An audio signal processing, binaural technology, applied in the direction of electrical digital data processing, input/output process of data processing, spatial/structural arrangement of loudspeakers, etc., can solve the problems of inconvenient use, not being able to hear the same sound, etc., and achieve accurate Definite effect
Active Publication Date: 2019-04-12
HUAWEI TECH CO LTD
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Problems solved by technology
[0005] Sound field synthesis is inconvenient to use due to the large number of speakers required
Also, different users within the area of the projected sound field cannot hear the same sound
Method used
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Embodiment Construction
[0058] in figure 1 In this, the first embodiment of the inventive audio signal processing device 10 is described. The audio signal processing device 10 includes a driving function determination unit 11 and a filtering unit 12. The driving function determining unit 11 is configured to determine driving functions of multiple speakers based on the position and directivity of the virtual left binaural signal source, the position and directivity of the virtual right binaural signal source, and the positions of the multiple speakers to generate a virtual left binaural Signal source and virtual right binaural signal source. The obtained driving function is passed to the filtering unit 12, and the filtering unit 12 is used for filtering the left binaural signal and the right binaural signal using the driving functions of the multiple speakers to generate multiple output signals.
[0059] Advantageously, the driving function determination unit is provided with the position and directivit...
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An audio signal processing device for generating a plurality of output signals for a plurality of loudspeakers from an input audio signal comprises a driving function determining unit adapted to determined driving functions of a plurality of loudspeakers for generating a virtual left binaural signal source and a virtual right binaural signal source based upon a position and a directivity of the virtual left binaural signal source, a position and a directivity of the virtual right binaural signal source and positions of the plurality of loudspeakers. Moreover, it comprises a filtering unit adapted to filter a left binaural signal and a right binaural signal using the driving functions of the plurality of loudspeakers resulting in the plurality of output signals. The left binaural signal and the right binaural signal constitute the input audio signal or are derived there from.
Description
Technical field [0001] The present invention involves the use of multiple speakers to generate binaural signals and project them to the user's location. Background technique [0002] In recent years, the use of binaural signals in headphones has become a standard practice. Binaural signals are two channel signals composed of the left channel corresponding to the left binaural signal expected to reach the listener's left ear and the right channel corresponding to the right binaural signal expected to reach the listener's right ear. The ear signal may give the user a sense of orientation, but only a single speaker is used for each ear of the user. [0003] However, the disadvantage of using the binaural signal in the headset is that the user must wear the headset, which limits the user's mobility, which is laborious and uncomfortable. [0004] In addition, sound field synthesis has been used for a long time. By using sound field synthesis, the virtual sound source can be placed in a...
Claims
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IPC IPC(8): H04S5/00H04S7/00H04S3/00
CPCH04S7/303G06F3/012H04R5/02H04R5/04H04R2499/11H04S3/00H04S3/008H04S5/005H04S7/00H04S7/30H04S7/305H04S2400/01H04S2420/01
Inventor 卡里姆·赫尔旺尼彼得·格罗舍郎玥
Owner HUAWEI TECH CO LTD