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

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

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
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the active speaker in this embodiment (take the two-way speaker as an example) includes a signal input unit, a digital signal processor, a microprocessor, a plurality of power amplifier units and a plurality of speaker units, and each power amplifier unit is matched with a The speaker unit is connected, and the speaker unit can be composed of one or more speakers.

[0029] The digital signal processor is provided with a data storage module, and the data storage module stores a group of input processing parameters and multiple groups of output processing parameters respectively corresponding to each power amplifier unit, and each group of entity output processing parameters includes one or more DSP parameters;

[0030] The set of input processing parameters includes multiple physical DSP data, and the type of physical DSP data is not limited. The input processing parameters may include multiple physical DSP data of the same type, or multiple di...

Embodiment 2

[0075] The difference between this embodiment and Embodiment 1 is that each entity DSP data contained in the active speaker input processing parameters of this embodiment includes a speaker layer DSP parameter and an array layer DSP parameter, and a speaker layer DSP parameter type The same system 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.

[0076] 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 grou...

Embodiment 3

[0092] The difference between this embodiment and Embodiment 1 is that in this embodiment, among the DSP data included in the input processing parameters, at least one DSP data also includes a system layer DSP parameter of the same type as its speaker layer DSP parameter, and the system layer DSP The parameters are 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.

[0093] In this embodiment, it is assumed that the input processing parameters include input mute data, input gain data, input delay data, and EQ data. Then, in the step 30, the digital signal processor performs the following steps in a pipelined manner:

[0094] Execute step S31 once according to the input mute parameter of the speaker layer;

[0095] Execute step S31 once according to the mute parameter input at the array layer;

[0096] Execute step S31 once according to the system layer input mute parameter;

[0097...

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Abstract

The invention relates 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 dividing the processed audio signal into a plurality of output audio signals corresponding to each power amplifier unit; S40, the DSP subjecting each output audio signal to a plurality of signal processing operation steps in the assembly line manner; and S50, 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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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/20H04R29/00
Inventor 李志雄邓俊曦
Owner GUANGZHOU LEAFUN CULTURE SCI & TECH
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