A wireless earphone with an automatic noise reduction function

Abstract

The present invention relates to the field of automatic noise reduction technology, and particularly to a wireless earphone with an automatic noise reduction function. The impact of noise volume on the human body is that sleep is disturbed at 50-90 decibels, the ears ache at 90-130 decibels, and the eardrums rupture above 130 decibels. In the present invention, a microphone playback unit is provided in the wireless earphone to quickly play a preset volume. A data acquisition unit is provided to effectively obtain the noise of the wireless earphone under the preset volume, improving the safety of the wireless earphone while making the operation and use more convenient. A noise processing unit is provided to quickly determine whether the noise reduction function meets the standard according to the evaluation value, thus avoiding the situation where the ear is damaged due to the non-compliance of the earphone noise reduction function. The microphone playback unit can quickly determine the reason for non-compliance, improving the safety of the wireless earphone while enhancing the simplicity of operation and use.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic noise reduction, and particularly to a wireless earphone with an automatic noise reduction function. Background Art

[0002] Automatic noise reduction uses an active noise reduction method for automatic adjustment to achieve an efficient and precise active noise reduction effect. Active noise cancellation (ANC) is a technology aimed at eliminating environmental noise, with the purpose of allowing users to enjoy the content they are listening to without being disturbed by the outside world, and the volume will not cause hearing loss. It uses a combination of microphones and digital signal processing (DSP) algorithms to analyze external sounds and attenuate them with anti-noise signals. The impact of noise volume (decibels) on the human body: 0 - 50 dB: comfortable, whispering. 50 - 90 dB: disturbing sleep, sad, anxious. 90 - 130 dB: itchy ears, ear pain. Above 130 dB: eardrum rupture, deafness. Therefore, it is very meaningful to simply improve the safety of the automatic noise reduction function.

[0003] Chinese Patent Publication No. CN114650484B discloses a wireless earphone with an automatic noise reduction function and its usage method, which includes a head-mounted earphone storage unit for storing the head-mounted wireless earphone; an adaptive noise reduction unit receives an audio digital signal and performs noise cancellation processing on the audio digital signal through a preset processing program to obtain and send a noise reduction digital signal; the head-mounted earphone storage unit can be placed outdoors, such as in a vehicle environment, which is convenient for users to pick up and place the head-mounted earphone. The physical noise reduction unit can enable the wearer to reduce the influence of external factors on the earphone playback when using the head-mounted earphone; the adaptive noise reduction unit can detect the noise frequency in the audio digital signal and emit a sound wave that cancels it, so as to achieve the effect of audio noise interference and harmony, cancel the noise, and reduce the noise of the audio, facilitating users to better use the earphone and enhancing the experience. However, it does not involve the issue of the processing method for the safety of the noise reduction function with simple operation. Summary of the Invention

[0004] Therefore, the present invention provides a wireless earphone with an automatic noise reduction function to overcome the problems of the simplicity and safety of the automatic test operation of the noise reduction function of wireless earphones in the prior art.

[0005] To achieve the above object, the present invention provides a wireless earphone with an automatic noise reduction function, including:

[0006] A microphone playback unit for playing audio information at a preset volume;

[0007] A resistance detection unit connected to the microphone playback unit for detecting the resistance value inside the wireless earphone;

[0008] A data acquisition unit, which is respectively connected to the microphone playback unit and the resistance detection unit, and is used to collect the environmental noise information and the noise volume of the wireless headset during the process of the microphone playback unit playing audio information, as well as the resistance value detected by the resistance detection unit;

[0009] A noise processing unit, which is connected to the data acquisition unit, and is used to calculate an evaluation value for determining the noise reduction function of the wireless headset based on the acquired information; the noise processing unit is also used to determine the reason for non-compliance based on the playback volume of the microphone playback unit when it is determined that the noise reduction function does not meet the standard based on the evaluation value, and, based on the acquired noise volume of the wireless headset, re-determine whether the noise reduction function meets the standard; when it is determined that the noise reduction function meets the standard, store data in the noise processing unit; the information acquired by the noise processing unit includes the playback volume of the audio information, the environmental noise volume, the noise volume of the wireless headset, and the resistance value of the wireless headset.

[0010] Further, the noise processing unit of the present invention obtains the evaluation value θ of the noise reduction function of the wireless headset by using the following formula,

[0011]

[0012] where θ is the evaluation value, f is the noise volume of the wireless headset detected at a test volume of 30 dB, f1 is the noise reference value at a volume of 30 dB, λ is the noise volume of the wireless headset detected at a test volume of 60 dB, λ1 is the noise reference value at a volume of 60 dB, α is the noise volume of the wireless headset detected at a volume of 90 dB, and α1 is the noise reference value at a volume of 90 dB.

[0013] Further, the noise processing unit of the present invention is used to re-determine whether the noise reduction function of the wireless headset meets the standard based on the acquired environmental noise volume when it is initially determined that the noise reduction function of the wireless headset does not meet the standard based on the acquired evaluation value, or, when it is determined that the noise reduction function of the wireless headset does not meet the standard, determine the reason for non-compliance based on the volume of the audio information output by the microphone playback unit.

[0014] Further, the noise processing unit of the present invention is used to determine the reason for non-compliance of the noise reduction function based on the difference between the acquired playback volume and the preset volume reference, including:

[0015] Determine the volume of the audio information played by the microphone playback unit when it is determined that the reason for non-compliance of the noise reduction function of the wireless headset is the playback volume;

[0016] When it is determined that the reason for non-compliance of the noise reduction function of the wireless headset is the evaluation value reference, determine the evaluation value reference based on the noise volume when the microphone playback unit does not play sound, and;

[0017] When it is determined that the reason for the noise reduction function of the wireless earphone not meeting the standard is a problem with the internal circuit of the wireless earphone, determine the reason for the non-compliance of the internal circuit based on the playback volume.

[0018] Furthermore, the noise processing unit of the present invention has several correction methods for the evaluation value reference based on the difference between the noise volume after stopping playing sound and the preset reference, and the correction amplitude of each correction method for the evaluation value reference is different.

[0019] Furthermore, when it is determined based on the difference between the acquired playback volume and the preset reference that the problem with the internal circuit of the wireless earphone is a short circuit, the noise processing unit of the present invention issues an earphone replacement alarm, and when it is determined that the problem with the internal circuit of the wireless earphone is a loose connection, searches for the position coordinate points of the loose connection of the internal circuit.

[0020] Furthermore, the noise processing unit of the present invention is also used to determine the position coordinate points of the loose connection of the internal circuit based on the ratio of the detected resistance value to the preset resistance value reference.

[0021] Furthermore, when it is determined based on the difference between the acquired ambient noise volume and the preset reference that the noise reduction function does not meet the standard for the second time, the noise processing unit of the present invention determines whether the environment meets the standard based on the acquired ambient noise.

[0022] Furthermore, when it is determined based on the ratio of the acquired ambient noise to the preset noise reference that the environment meets the standard, the noise processing unit of the present invention retests the microphone playback volume, and when it is determined that the environment does not meet the standard, the wireless earphone issues an alarm.

[0023] Furthermore, the noise processing unit of the present invention has several adjustment methods for the microphone playback volume based on the difference between the acquired wireless earphone noise volume and the preset noise reference, and the adjustment amplitude of each adjustment method for the microphone playback volume is different.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows. The present invention can quickly play a preset volume through the microphone playback unit in the wireless earphone. Regarding the impact of noise volume on the human body: in the case of 0 - 50 decibels, people feel comfortable, like whispering. In the case of 50 - 90 decibels, it interferes with sleep, makes people sad and anxious. In the case of 90 - 130 decibels, the ears itch and hurt. In the case of 130 decibels, the eardrums rupture and deafness occurs. By providing a data acquisition unit, it can effectively collect the playback volume, ambient noise, and wireless earphone noise volume, improving the safety of the wireless earphone while making the operation and use more convenient. By providing a noise processing unit, it can quickly determine whether the noise reduction function meets the standard according to the evaluation value, thus avoiding the situation where the ear is damaged due to the non - compliance of the earphone noise reduction function, improving the safety of using the wireless earphone. Through the microphone playback unit, it can quickly determine the reason for non - compliance, improving the safety of the wireless earphone while making the operation and use more convenient. By re - determining whether the noise reduction function meets the standard, it can accurately reduce the occurrence of eardrum damage.

[0025] Furthermore, through the calculation of the evaluation value, the present invention can more accurately determine whether the noise reduction function meets the standard, improving the safety of the earphone while making the operation and use more convenient.

[0026] Furthermore, when the present invention determines that the noise reduction function meets the standard, it can effectively store data in the noise processing unit, with simple operation; when initially determining that the noise reduction function does not meet the standard, it can quickly re - determine whether it meets the standard, enhancing safety; when determining that the noise reduction function does not meet the standard, it can effectively determine the reason for the non - compliance of the noise reduction, with simple operation and use, enhancing safety.

[0027] Furthermore, by determining the reason for the non - compliance of the noise reduction function, the present invention can quickly adjust the adjustment method for the microphone playback volume, with simple operation and use; at the same time, after not playing sound, the noise volume can quickly be corrected according to the evaluation value benchmark, improving safety; and, through determination, it can quickly determine problems with the internal circuit of the wireless earphone, enhancing the simplicity of operation and use.

[0028] Furthermore, by correcting the evaluation value benchmark, the present invention can effectively ensure the accuracy of the determination benchmark, enhancing safety.

[0029] Furthermore, by determining problems with the internal circuit of the wireless earphone, the present invention can accurately determine whether there is a short - circuit or a loose connection, and perform corresponding replacement and search, improving the simplicity of operation and use.

[0030] Furthermore, by comparing the obtained resistance value with the preset resistance value, the present invention can quickly determine the coordinate points of the internal circuit connection positions and perform welding, improving the simplicity of operation and use.

[0031] Further, when the noise reduction function of the present invention is determined to meet the standard for the second time, data can be quickly stored in the noise processing unit, and when the noise reduction function does not meet the standard for the second time, it can be determined whether the environment meets the standard, improving the safety of the noise reduction function of the wireless earphones.

[0032] Further, when the environment is determined to meet the standard, the present invention can effectively retest the microphone playback volume, improving the accuracy, and when the environment does not meet the standard, it can quickly issue an alarm to the wireless earphones, improving the safety.

[0033] Further, by adjusting the microphone playback volume, the present invention can avoid misjudgment and improve the accuracy of the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a block diagram of the structure of the wireless earphones with automatic noise reduction function of the present invention;

[0035] Figure 2 is a flowchart for determining whether the noise reduction function meets the standard of the present invention;

[0036] Figure 3 is a flowchart for determining the reason why the noise reduction function does not meet the standard of the present invention;

[0037] Figure 4 is a flowchart for the correction method of the evaluation value criterion of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0038] In order to make the objectives and advantages of the present invention clearer, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0040] Please refer to Figure 1 as shown, which is a block diagram of the structure of the wireless earphones with automatic noise reduction function of the present invention. The wireless earphones with automatic noise reduction function include a microphone playback unit, a resistance detection unit, a data acquisition unit, and a noise processing unit, wherein:

[0041] The microphone playback unit is used to play audio information at a preset volume;

[0042] The resistance detection unit is connected to the microphone playback unit and is used to detect the resistance value inside the wireless earphones;

[0043] A data acquisition unit, which is respectively connected to the microphone playback unit and the resistance detection unit, and is used to collect the environmental noise information and the wireless headphone noise volume during the process of the microphone playback unit playing audio information, as well as the resistance value detected by the resistance detection unit;

[0044] A noise processing unit, which is connected to the data acquisition unit, and is used to calculate an evaluation value for determining the noise reduction function of the wireless headphones based on the acquired information; the noise processing unit is also used to, when determining that the noise reduction function does not meet the standard based on the evaluation value, determine the reason for not meeting the standard based on the playback volume of the microphone playback unit, and, based on the acquired wireless headphone noise volume, determine again whether the noise reduction function meets the standard; when it is determined that the noise reduction function of the wireless headphones meets the standard, store data in the noise processing unit; the information acquired by the noise processing unit includes the playback volume of the audio information, the environmental noise volume, the wireless headphone noise volume, and the resistance value of the wireless headphones.

[0045] Specifically, the noise processing unit obtains the evaluation value θ of the noise reduction function of the wireless headphones by using the following formula:

[0046]

[0047] where θ is the evaluation value, f is the noise volume of the wireless headphones detected at a test volume of 30 dB, f1 is the noise reference value at a volume of 30 dB, λ is the noise volume of the wireless headphones detected at a test volume of 60 dB, λ1 is the noise reference value at a volume of 60 dB, α is the noise volume of the wireless headphones detected at a volume of 90 dB, and α1 is the noise reference value at a volume of 90 dB.

[0048] Please refer to Figure 2 as shown, which is the decision flow chart for determining whether the noise reduction function of the present invention meets the standard. The noise processing unit of the present invention determines whether the noise reduction function of the wireless headphones meets the standard based on the acquired evaluation value, where:

[0049] If the evaluation value is less than or equal to a preset first evaluation value benchmark, the noise processing unit determines that the noise reduction function of the wireless headphones meets the standard and stores data in the noise processing unit;

[0050] If the evaluation value is greater than the preset first evaluation value benchmark and less than or equal to the preset second evaluation value benchmark, the noise processing unit preliminarily determines that the noise reduction function of the wireless headphones does not meet the standard, and determines again whether the noise reduction function meets the standard based on the acquired environmental noise volume;

[0051] If the evaluation value is greater than the preset second evaluation value benchmark, the noise processing unit determines that the noise reduction function of the wireless earphone does not meet the standard, and determines the reason for non-compliance based on the volume of the audio information output by the microphone playback unit.

[0052] Please refer to Figure 3 as shown, which is the decision flow chart for determining the reason why the noise reduction function does not meet the standard according to the present invention. The noise processing unit is used to determine the reason why the noise reduction function does not meet the standard based on the difference between the acquired playback volume and the preset volume benchmark, including:

[0053] If the difference is less than or equal to the preset first difference benchmark, when the noise processing unit determines that the reason for the non-compliance of the noise reduction function of the wireless earphone is the problem of the playback volume, it determines the volume of the audio information played by the microphone playback unit;

[0054] If the difference is greater than the preset first difference benchmark and less than or equal to the preset second difference benchmark, the noise processing unit determines that the reason for the non-compliance of the noise reduction function of the wireless earphone is the evaluation value benchmark, and determines the evaluation value benchmark based on the noise volume when the microphone playback unit does not play sound;

[0055] If the difference is greater than the preset second difference benchmark, the noise processing unit determines that the reason for the non-compliance of the noise reduction function of the wireless earphone is the internal circuit problem of the wireless earphone, and determines the reason for the non-compliance of the internal circuit based on the playback volume.

[0056] Please refer to Figure 4 as shown, which is the flow chart of the correction method of the evaluation value benchmark according to the present invention. The noise processing unit is used to set several correction methods for the evaluation value benchmark based on the difference between the noise volume after not playing sound and the preset benchmark, where:

[0057] If the difference is less than or equal to the preset first benchmark, the noise processing unit uses the first correction coefficient γ1 to correct the evaluation value benchmark button to the corresponding value;

[0058] If the difference is greater than the preset first benchmark and less than or equal to the preset second benchmark, the noise processing unit uses the second correction coefficient γ2 to correct the evaluation value benchmark button to the corresponding value;

[0059] If the difference is greater than the preset second benchmark, the noise processing unit uses the third correction coefficient γ3 to correct the evaluation value benchmark button to the corresponding value.

[0060] Among them, the present invention sets γ1 = 0.99; γ2 = 0.97; γ3 = 0.95.

[0061] Specifically, the noise processing unit is used to determine the cause of the internal circuit problem of the wireless earphone based on the difference between the obtained playback volume and a preset reference. Among them:

[0062] If the difference is less than or equal to a preset difference reference, the noise processing unit determines that the internal circuit problem of the wireless earphone is a short circuit and issues an earphone replacement alarm;

[0063] If the difference is greater than the preset difference reference and the noise processing unit determines that the internal circuit problem of the wireless earphone is a loose connection, it searches for the position coordinate points of the loose connection in the internal circuit.

[0064] Specifically, the noise processing unit is also used to determine the position coordinate points of the loose connection in the internal circuit based on the ratio of the obtained resistance value to a preset resistance value reference.

[0065] Specifically, the present invention sets:

[0066] If the ratio range is greater than or equal to 0.9 and less than 1, the position of the position coordinate points of the loose connection in the internal circuit searches for the corresponding coordinate points [f, h] for welding;

[0067] If the ratio range is 1, the position of the position coordinate points of the loose connection in the internal circuit searches for the corresponding coordinate points [o, p] for welding;

[0068] If the ratio range is greater than 1 and less than or equal to 1.1, the position of the position coordinate points of the loose connection in the internal circuit searches for the corresponding coordinate points [k, l] for welding;

[0069] Specifically, the noise processing unit is used to secondarily determine whether the noise reduction function meets the standard based on the difference between the obtained environmental noise volume and a preset reference. Among them:

[0070] If the difference is less than or equal to a preset difference reference, the noise processing unit determines that the noise reduction function meets the standard and stores data in the noise processing unit;

[0071] If the difference is greater than the preset difference reference, the noise processing unit determines that the noise reduction function does not meet the standard and determines whether the environment meets the standard based on the obtained environmental noise.

[0072] Specifically, the noise processing unit is used to determine whether the environment meets the standard based on the ratio of the obtained environmental noise to a preset noise reference. Among them:

[0073] If the ratio is less than or equal to a preset ratio reference, the noise processing unit determines that the environment meets the standard and re-performs the test of the microphone playback volume;

[0074] If the ratio is greater than the preset ratio reference, the noise processing unit determines that the environment does not meet the standard, and the wireless earphone issues an alarm and stops playing.

[0075] Specifically, the noise processing unit has several adjustment methods for the microphone playback volume based on the difference between the obtained noise volume of the wireless earphone and the preset noise benchmark, where:

[0076] If the difference is less than or equal to the preset first benchmark, the noise processing unit uses the first adjustment coefficient α1 to adjust the button for the microphone playback volume to the corresponding value;

[0077] If the difference is greater than the preset first benchmark and less than or equal to the preset second benchmark, the noise processing unit uses the second adjustment coefficient α2 to adjust the button for the microphone playback volume to the corresponding value;

[0078] If the difference is greater than the preset second benchmark, the noise processing unit uses the third adjustment coefficient α3 to adjust the button for the microphone playback volume to the corresponding value.

[0079] Among them, the present invention sets that α1 = 0.98; α2 = 0.96; α3 = 0.94.

[0080] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

[0081] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wireless earphone with an automatic noise reduction function, characterized in that, Including: A microphone playback unit for playing audio information at a preset volume; A resistance detection unit connected to the microphone playback unit for detecting the resistance value inside the wireless earphone; A data acquisition unit connected to the microphone playback unit and the resistance detection unit respectively for acquiring ambient noise information and wireless earphone noise volume during the process of the microphone playback unit playing audio information, as well as the resistance value detected by the resistance detection unit; A noise processing unit connected to the data acquisition unit for calculating an evaluation value for determining the noise reduction function of the wireless earphone based on the acquired information; the noise processing unit is further configured to, when determining that the noise reduction function does not meet the standard based on the evaluation value, determine the reason for non-compliance based on the playback volume of the microphone playback unit, or re-determine whether the noise reduction function meets the standard based on the acquired wireless earphone noise volume; store data in the noise processing unit when determining that the noise reduction function meets the standard; the information acquired by the noise processing unit includes the playback volume of the audio information, ambient noise volume, wireless earphone noise volume, and the resistance value of the wireless earphone; Wherein the reasons for determining non-compliance based on the playback volume of the microphone playback unit include: Using the noise processing unit to determine the reason for non-compliance of the noise reduction function based on the difference between the acquired playback volume and the preset volume reference, including, If the difference is less than or equal to the preset first difference reference, when the noise processing unit determines that the reason for non-compliance of the noise reduction function of the wireless earphone is a problem with the playback volume, determine the volume of the audio information played by the microphone playback unit; If the difference is greater than the preset first difference reference and less than or equal to the preset second difference reference, the noise processing unit determines that the reason for non-compliance of the noise reduction function of the wireless earphone is a problem with the evaluation value reference, and determines the evaluation value reference based on the noise volume when the microphone playback unit does not play sound; If the difference is greater than the preset second difference reference, the noise processing unit determines that the reason for non-compliance of the noise reduction function of the wireless earphone is a problem with the internal circuit of the wireless earphone, and determines the reason for non-compliance of the internal circuit based on the playback volume.

2. The wireless earphone with an automatic noise reduction function according to claim 1, wherein, The noise processing unit obtains the evaluation value θ of the noise reduction function of the wireless earphone by the following formula: Where θ is the evaluation value, f is the noise volume and ambient noise volume of the wireless earphone detected at a test volume of 30 dB, f1 is the noise reference value at a volume of 30 dB, λ is the noise volume and ambient noise volume of the wireless earphone detected at a test volume of 60 dB, λ1 is the noise reference value at a volume of 60 dB, α is the noise volume and ambient noise volume of the wireless earphone detected at a volume of 90 dB, and α1 is the noise reference value at a volume of 90 dB.

3. The wireless earphone with an automatic noise reduction function according to claim 2, characterized in that, The noise processing unit has several correction methods for the evaluation value reference based on the difference between the noise volume after not playing sound and the preset reference, and the correction amplitude of each correction method for the evaluation value reference is different.

4. The wireless earphone with an automatic noise reduction function according to claim 3, characterized in that, The noise processing unit is used to issue a headphone replacement alarm when it is determined that there is a short circuit in the internal circuit of the wireless headphones based on the difference between the acquired playback volume and the preset reference. Also, when it is determined that there is a loose connection in the internal circuit of the wireless headphones, the noise processing unit is used to find the position coordinate points of the loose connection in the internal circuit.

5. The wireless earphone with an automatic noise reduction function according to claim 4, wherein, The noise processing unit is further used to determine the position coordinate points of the loose connection in the internal circuit based on the ratio of the acquired resistance value to the preset resistance value reference.

6. The wireless earphone with an automatic noise reduction function according to claim 5, characterized in that, The noise processing unit is used to determine whether the environment meets the standard based on the acquired ambient noise when it is determined for the second time that the noise reduction function does not meet the standard based on the difference between the acquired ambient noise volume and the preset reference.

7. The wireless earphone with an automatic noise reduction function according to claim 6, wherein, The noise processing unit is used to retest the microphone playback volume when it is determined that the environment meets the standard based on the ratio of the acquired ambient noise to the preset noise reference. Also, when it is determined that the environment does not meet the standard, the wireless headphones issue an alarm.

8. The wireless earphone with an automatic noise reduction function according to claim 7, characterized in that, Based on the difference between the acquired wireless headphone noise volume and the preset noise reference, the noise processing unit has several adjustment methods for the microphone playback volume, and the adjustment ranges of each adjustment method for the microphone playback volume are different.

Images