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Control method of active sound box with built-in DSP (digital signal processor)

A control method and speaker technology, applied to frequency/direction characteristic devices, electrical components, etc., can solve problems such as heavy time and workload, difficulty in predicting speakers, and inability to guarantee acoustic effects, so as to achieve the effect of reducing workload and simplifying difficulty

Active Publication Date: 2012-11-14
GUANGZHOU LEAFUN CULTURE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Originally, the workload of adjusting the speakers one by one is already very large, but now it needs to be repeated many times (the number of times is unknown, the time spent and the workload required are very huge
Especially for non-professionals, audio system debugging and calibration is almost an impossible task
[0006] (2) Even if the system has been adjusted and corrected many times, it still cannot guarantee better acoustic effects
Even if engineers adjust each speaker one by one, since the sound system is a systematic project, each speaker will affect each other, and when the engineer adjusts each speaker, it is difficult to predict how the adjusted speaker will affect other speakers. How the speaker will affect it (or how other speakers will affect this speaker), so it can only be estimated empirically

Method used

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  • Control method of active sound box with built-in DSP (digital signal processor)
  • Control method of active sound box with built-in DSP (digital signal processor)

Examples

Experimental program
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Effect test

Embodiment 1

[0026] like figure 1 As shown, the active speaker in this embodiment includes a signal input unit, a digital signal processor, a microprocessor, a power amplifier unit and a speaker unit. The digital signal processor is provided with a data storage module, and a group of input processing parameters are stored in the data storage module.

[0027] The set of input processing parameters includes a plurality of entity DSP data (the type of entity DSP data is not limited, and the input processing parameters may contain multiple entity DSP data of the same type, or multiple entity DSP data of different types), each Each entity DSP data comprises a speaker layer DSP parameter and an array layer DSP parameter corresponding to the type of the entity DSP data, the speaker layer DSP parameter is the DSP parameter set for the active speaker, and the array layer DSP parameter is for the DSP parameters set for each speaker member of the array group to which the active speaker belongs, and ...

Embodiment 2

[0052] The difference between this embodiment and Embodiment 1 is that in this embodiment, among the DSP data included in the input processing parameters, the DSP data containing the array layer DSP parameters also includes a system layer DSP parameter of the same type as the speaker layer DSP parameter , the system layer DSP parameter is set for each speaker member of the system group to which the active speaker belongs, and the system group includes one or more active speakers.

[0053] The DSP parameters (which may be any type of DSP parameters) used to simultaneously adjust the characteristics of the speaker members of the system group are called system layer DSP parameters, that is, each speaker member of the same system group shares the data of the system layer DSP parameters. If a system layer DSP parameter of a certain speaker member in the system group is modified, the corresponding system layer DSP parameters of other speaker members in the same system group will also...

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Abstract

The invention relates to sound box control technology, in particular to a control method of an active sound box with a built-in DSP. The method comprises: S10, adjusting each DSP (digital signal processor) parameter of a DSP according to an external control signal; S20, receiving an audio signal inputted from outside of the sound box, and transmitting to the DSP; S30, the DSP executing a plurality of signal processing operation steps in an assembly line manner; and S40, the power amplifier unit receiving the corresponding output audio signal processed by step S40, and transmitting to the corresponding speaker unit. The control method provided by the invention can simplify the difficulty in debugging and calibrating the sound box system by setting the array layer DSP parameters for synchronously adjusting the plurality of sound boxes, thereby reducing the work load, and ensuring the system debugging effect.

Description

technical field [0001] The invention relates to a sound box control technology, in particular to a control method for a built-in DSP active sound box. Background technique [0002] Speakers with built-in digital signal processors (DSP) and power amplifiers (also called active speakers) can perform sound effects such as EQ adjustment, delay, limiter, and frequency division on the input audio signal through the digital signal processor, so that the speakers can achieve the best performance. good working condition. [0003] At present, the conventional adjustment methods for the sound system composed of active speakers are as follows: (1) First adjust the input processing parameters and output processing parameters of the digital signal processor of a single speaker (speakers with frequency division above two), such as EQ, delay, limiter, etc. (2) Test the effect of the sound system, and adjust the digital signal processor parameters of the relevant speakers based on experien...

Claims

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Application Information

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IPC IPC(8): H04R1/20H04R29/00
Inventor 李志雄邓俊曦
Owner GUANGZHOU LEAFUN CULTURE SCI & TECH
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