Tone playing method, device and readable storage medium
A playback method and technology of a playback device, applied in information storage, recorded information storage, electromagnetic audible signals, etc., can solve problems such as the ineffectiveness of sound alarms and the inability of users or equipment to clearly know, to reduce costs and reduce differences. Effect
Active Publication Date: 2021-05-04
SHANGHAI NANHUA ELECTRONICS
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Problems solved by technology
[0003] At present, various tones of the sound source are stored and encapsulated in a controller such as a single-chip microcomputer. When the control circuit or controller in the alarm is old, damaged, and needs to be replaced, the tone produced by the alarm will change after replacement. , the user or the device cannot clearly know what kind of fault the tone corresponds to at this time, making the sound alarm useless
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[0055]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0056] At present, due to the rapid replacement of control devices such as single-chip microcomputers, when the controller device is replaced, it is often impossible to ensure that the replaced control device is consistent with the model of the original control device. When the version of the controller model used before and after the alarm is different, the tone will be different.
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The present invention provides a tone playing method, device and readable storage medium, relating to the technical field of tone alarms, including reading the specific attributes of the tone, the specific attributes include the tone type and the tone characteristic parameters corresponding to the tone type, and the tone type includes continuous Change alarm tone and non-continuous change alarm tone, tone characteristic parameters include duty cycle, start frequency, end frequency, rise time, fall time, duty cycle is used to determine the volume of the tone, start frequency and end frequency are used To determine the frequency range of the tone, the rise time and fall time are used to determine the frequency change speed of the tone; calculate the segment frequency of the tone according to specific attributes; generate PWM waves according to the segment frequency and duty cycle, and pass the PWM wave Drive the playback device to play the tone, which greatly reduces the tone difference during the controller transplantation process.
Description
technical field [0001] The invention relates to the technical field of tone alarms, in particular to a tone playing method, device and readable storage medium. Background technique [0002] Sound alarms are widely used in various industrial instruments, automation equipment, engineering machinery, special vehicles and other application equipment. For different types of application equipment, the sound alarms used in the sound alarm mode and tone combination will define their own The standard, that is, different tones correspond to corresponding types of faults, so that users or equipment can learn the fault situation according to the tones. Even standards for the same combination of tones show considerable variation in the sound of alarms from different clients. [0003] At present, various tones of the sound source are stored and encapsulated in a controller such as a single-chip microcomputer. When the control circuit or controller in the alarm is old, damaged, and needs ...
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IPC IPC(8): G11B20/10G08B3/10
CPCG08B3/10G11B20/10527G11B2020/10564
Inventor 苏强郑飞雄余朝阳佘俊铖陆洋
Owner SHANGHAI NANHUA ELECTRONICS