Algorithm for testing sweep frequency parameters by using single-frequency signal combination
A technology of single-frequency signal and combined testing, which is applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, speech analysis, etc. It can solve the problems of non-compliance of calculation and test, unfavorable frequency characteristic test time, etc.
Active Publication Date: 2020-10-27
方博科技(深圳)有限公司
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[0005] The present invention provides an algorithm for testing frequency sweep parameters by combining single-frequency signals, which solves the technical problems in the related art that the time length of the frequency characteristic test is too long, which is not conducive to calculation and the test does not conform to human hearing.
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[0052] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and realize the subject matter described herein, and is not intended to limit the protection scope, applicability or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as needed. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with respect to some examples may also be combined in other examples.
[0053] In this embodiment, an algorithm for testing frequency sweep parameters using a combination of single-frequency signals ...
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The invention, which relates to the technical field of acoustic testing, discloses an algorithm for testing a sweep frequency parameter by using a single-frequency signal combination. The algorithm comprises the following steps of generating a sweep frequency signal of the single-frequency signal combination for outputting; after the played swept-frequency signal is recovered, the generated single-frequency signal combination being segmented, and the segmented signal being calculated in a single-frequency signal mode; displaying the calculated acoustic parameter of each single-frequency signalon an xy two-dimensional coordinate graph taking the frequency point as an x axis to obtain a result of testing the sweep frequency parameter. According to the algorithm, the swept-frequency signal of the single-frequency signal combination is generated and is used for outputting, and the same segmentation signal is calculated in a single-frequency signal mode; the expected swept-frequency signalis set by inputting the preset data, so technical problems that the duration of the full-band swept-frequency signal in the existing frequency characteristic test is too long, a common single-frequency set is not beneficial to calculation, the duration is more excellent, and the test does not accord with the auditory habit of human ears are solved.
Description
technical field [0001] The present invention relates to an acoustic test method, more specifically, it relates to an algorithm for testing frequency sweep parameters by combining single frequency signals. Background technique [0002] The measurement of early frequency characteristics is realized by point-by-point surveying and mapping. During the entire measurement process, the amplitude of the signal input to the network under test should be kept constant, and the corresponding output voltages at different frequencies should be recorded. According to the obtained data, the amplitude-frequency characteristic curve of the network can be drawn on the coordinate paper. Obviously, this method is not only cumbersome and time-consuming, but also may miss some details on the measured curve due to the insufficient frequency interval of the measurement, making the obtained curve inaccurate. [0003] The frequency sweep measurement method is to add equal-amplitude sweep frequency si...
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IPC IPC(8): G01H17/00G10L25/18G10L25/51
CPCG01H17/00G10L25/18G10L25/51
Inventor 甘澍韩硕
Owner 方博科技(深圳)有限公司