A Method for Adaptive Adjustment of Indoor Sound Reinforcement System

Abstract

The invention discloses a self-adaptive adjustment method for an indoor sound reinforcement. The self-adaptive adjustment method comprises a first step of adjusting an input gain; a second step of testing an upper limit of an output gain; a third step of adjusting the output gain; a fourth step of detecting output delay and conducting delay compensation; a fifth step of detecting a frequency response and conducting frequency compensation; a sixth step of detecting various parameters of the system after adjustment; and a seventh step of outputting adjustment results. The scheme achieves automatic adjustment for the sound reinforcement system with no human intervention and good consistency after adjustment. The invention is applicable to all indoor sound reinforcement systems.

Description

technical field

[0001] The invention relates to the field of sound processing and amplification, in particular to an adaptive adjustment method for an indoor sound reinforcement system applied to indoor environments such as classrooms and meeting places. Background technique

[0002] When installing a sound reinforcement system in classrooms and conferences, the installation effect is closely related to the indoor sound environment and the audio characteristics of the sound reinforcement equipment. Therefore, in the past, to ensure the installation effect, professional sound engineers had to go through complicated debugging after installation. This will consume more time and energy, and it is difficult to maintain consistency after debugging due to the difference in people's hearing.

[0003] The State Intellectual Property Office of the People's Republic of China published a patent document with the publication number CN102176766A on September 07, 2011. The name is a detect...

Examples

Embodiment

[0038] Embodiment: A method for testing indoor sound reinforcement equipment in this embodiment is applied to indoor sound reinforcement equipment. Indoor sound reinforcement equipment such as figure 1As shown, it includes a pickup array 1, an audio processing host 2 and a speaker array 3, the pickup array 1 is connected to the audio processing host 2, and the audio processing host 2 is connected to the speaker 3 array. The audio processing host 2 includes a controllable input matrix 21 , an intelligent acquisition module 22 , an audio analysis module 23 , a DSP processing module 24 and a controllable output matrix 25 connected in sequence. The controllable input matrix 21 is connected with the pickup array 1 , and the controllable output matrix 25 is connected with the loudspeaker array 3 .

[0039] A standard classroom (length / width / height of the classroom: 8.9 / 7.9 / 3.3M) is used for testing, and the test audio frequencies are 250, 500, and 1000Hz respectively, 1-8 meters di...

technical field

[0001] The invention relates to the field of sound processing and amplification, in particular to an adaptive adjustment method for an indoor sound reinforcement system applied to indoor environments such as classrooms and meeting places. Background technique

[0002] When installing a sound reinforcement system in classrooms and conferences, the installation effect is closely related to the indoor sound environment and the audio characteristics of the sound reinforcement equipment. Therefore, in the past, to ensure the installation effect, professional sound engineers had to go through complicated debugging after installation. This will consume more time and energy, and it is difficult to maintain consistency after debugging due to the difference in people's hearing.

[0003] The State Intellectual Property Office of the People's Republic of China published a patent document with the publication number CN102176766A on September 07, 2011. The name is a detect...

Examples

Embodiment

[0038] Embodiment: A method for testing indoor sound reinforcement equipment in this embodiment is applied to indoor sound reinforcement equipment. Indoor sound reinforcement equipment such as figure 1As shown, it includes a pickup array 1, an audio processing host 2 and a speaker array 3, the pickup array 1 is connected to the audio processing host 2, and the audio processing host 2 is connected to the speaker 3 array. The audio processing host 2 includes a controllable input matrix 21 , an intelligent acquisition module 22 , an audio analysis module 23 , a DSP processing module 24 and a controllable output matrix 25 connected in sequence. The controllable input matrix 21 is connected with the pickup array 1 , and the controllable output matrix 25 is connected with the loudspeaker array 3 .

[0039] A standard classroom (length / width / height of the classroom: 8.9 / 7.9 / 3.3M) is used for testing, and the test audio frequencies are 250, 500, and 1000Hz respectively, 1-8 meters di...

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