System for detecting downbeat and upbeat of acoustical signal

A sound signal, strong or weak technology, applied in the field of sound signal strong or weak beat detection system, can solve the problem that the sound and action cannot be synchronized

Inactive Publication Date: 2010-12-08
ZHONGHUANG INT
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Problems solved by technology

[0002] If you want a toy or device to move synchronously with the music, in the prior art, the audio track and the action are recorded separately, and the sound and the action are aligned by manual positioning. This method is pre-recorded data; when the user changes the audio track at will or action data, the sound and action will not be synchronized

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  • System for detecting downbeat and upbeat of acoustical signal
  • System for detecting downbeat and upbeat of acoustical signal

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Embodiment Construction

[0013] The above and other features and advantages of the present invention will be described in detail below with reference to the accompanying drawings.

[0014] see figure 1 As shown, it is a system block diagram of the present invention; a sound signal strong and weak beat detection system is to provide real-time (real-time) detection of music, audio or voice strong and weak beat changes, which includes:

[0015] An analog-to-digital converter (ADC) 10, which processes the input signal through the analog-to-digital converter (ADC) 10, and transmits it to the low-pass filter 20;

[0016] A low-pass filter 20, which is a digital low-pass filter with a cut-off bandwidth of 10 Hz, is connected to the output of the analog-to-digital converter (ADC) 10 to provide a cut-off analog-to-digital converter (ADC) The bandwidth of the output signal of 10, the signal is processed by the low-pass filter 20 and then sent to the norm module (Norm) 30; wherein the cut-off bandwidth of the l...

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Abstract

The invention discloses a system for detecting the downbeat and the upbeat of an acoustical signal, comprising an analog digital converter (ADC), a low pass filter, a norm module (Norm), an output unit and a controlled body. Input music, audio or voice frequency signals are converted by the analog digital converter (ADC), the signals converted by the analog digital converter (ADC) are transmittedto the norm module (Norm), the inside of the norm module is integrated with a norm operation calculation executing unit for operating signals output by the low pass filter through a norm operation calculation to obtain an operation result, the variation of the downbeat and the upbeat of the music, audio frequency or voice frequency signals can be obtained through the result of the operation, and the variation of the downbeat and the upbeat are output to an output unit, thereby the aim of synchronizing the external controlled body and the music, audio frequency or voice frequency signals is achieved.

Description

technical field [0001] The present invention is a signal detection device, in particular a sound signal strong and weak beat detection system, which can detect changes in music, audio or voice strong and weak beats in real time. Background technique [0002] If you want a toy or device to move synchronously with the music, in the prior art, the audio track and the action are recorded separately, and the sound and the action are aligned by manual positioning. This method is pre-recorded data; when the user changes the audio track at will or motion data, the sound and motion will not be synchronized. [0003] Therefore, how to solve the above-mentioned problem of synchronization between sound and action, and provide a sound signal strong and weak beat detection system, which can detect changes in music, audio or voice strong and weak beats in real time, is the technology of this case. Where the difficulty lies. Contents of the invention [0004] The purpose of the present ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63H30/00A63H30/02
Inventor 许建隆胡健威林聪明
Owner ZHONGHUANG INT
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