TWI748465B - Noise determination method and noise determination device - Google Patents

Noise determination method and noise determination device Download PDF

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TWI748465B
TWI748465B TW109116704A TW109116704A TWI748465B TW I748465 B TWI748465 B TW I748465B TW 109116704 A TW109116704 A TW 109116704A TW 109116704 A TW109116704 A TW 109116704A TW I748465 B TWI748465 B TW I748465B
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noise
spectrum
noise spectrum
electronic device
operating state
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TW202145195A (en
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簡文倫
江進富
陳世賓
李長昇
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明基電通股份有限公司
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Abstract

A noise determination method includes steps of providing a reference noise spectrum; sensing a first noise spectrum of an electronic device under a first operating state, sensing a second noise spectrum of the electronic device under a second operating state, and generating a difference noise spectrum according to the first noise spectrum and the second noise spectrum; generating a sum of noise according to the difference noise spectrum and the reference noise spectrum; comparing the sum of noise with a predetermined noise threshold; determining that noise generated by the electronic device is acceptable when the sum of noise is smaller than or equal to the predetermined noise threshold; and determining that noise generated by the electronic device is unacceptable when the sum of noise is larger than the predetermined noise threshold.

Description

噪音判斷方法及噪音判斷裝置 Noise judging method and noise judging device

本發明關於一種噪音判斷方法及噪音判斷裝置，尤指一種用以判斷電子裝置所產生之噪音是否可接受之噪音判斷方法及噪音判斷裝置。 The present invention relates to a noise determination method and a noise determination device, in particular to a noise determination method and a noise determination device for determining whether the noise generated by an electronic device is acceptable.

目前，許多電子裝置(例如，投影機)中皆安裝有動件(例如，風扇、色輪、螢光輪等)。當動件啟動時，動件會產生噪音。當噪音過大時，便會對使用者造成困擾。在對電子裝置之動件進行噪音檢測時，先前技術係以音壓大小作為判斷標準。然而，動件產生的噪音會被環境噪音干擾，使得噪音檢測的準確性降低。因此，如何準確地判斷電子裝置所產生之噪音是否可接受，便成為設計上的一大課題。 At present, many electronic devices (for example, projectors) are equipped with moving parts (for example, fans, color wheels, fluorescent wheels, etc.). When the moving part is activated, the moving part generates noise. When the noise is too loud, it will cause trouble to the user. When performing noise detection on moving parts of an electronic device, the prior art uses the sound pressure level as the criterion. However, the noise generated by the moving part will be disturbed by environmental noise, which reduces the accuracy of noise detection. Therefore, how to accurately determine whether the noise generated by the electronic device is acceptable has become a major design issue.

本發明提供一種用以判斷電子裝置所產生之噪音是否可接受之噪音判斷方法及噪音判斷裝置，以解決上述問題。 The present invention provides a noise judging method and noise judging device for judging whether the noise generated by an electronic device is acceptable, so as to solve the above-mentioned problems.

根據一實施例，本發明之噪音判斷方法包含下列步驟：提供一參考噪音頻譜；感測一電子裝置於一第一操作狀態下之一第一噪音頻譜，感測該電子裝置於一第二操作狀態下之一第二噪音頻譜，且根據該第一噪音頻譜與該第二噪音頻譜產生一差異噪音頻譜；根據該差異噪音頻譜與該參考噪音頻譜產生一噪音總和；比較該噪音總和與一預設噪音準位；當該噪音總和小於或等於該預設噪音準位時，判斷該電子裝置所產生之噪音可接受；以及當該噪音總和大於該預設噪音準位時，判斷該電子裝置所產生之噪音不可接受。 According to one embodiment, the noise determination method of the present invention includes the following steps: providing a reference noise spectrum; sensing a first noise spectrum of an electronic device in a first operating state, and sensing that the electronic device is operating in a second operation A second noise spectrum in the state, and a difference noise spectrum is generated based on the first noise spectrum and the second noise spectrum; a noise sum is generated based on the difference noise spectrum and the reference noise spectrum; the noise sum is compared with a prediction Set the noise level; when the total noise is less than or equal to the preset noise level, determine that the noise generated by the electronic device is acceptable; and when the total noise is greater than the preset noise level, determine where the electronic device is The noise produced is unacceptable.

根據另一實施例，本發明之噪音判斷裝置包含一儲存單元、一聲音感測單元以及一處理單元。儲存單元儲存一參考噪音頻譜。聲音感測單元感測一電子裝置於一第一操作狀態下之一第一噪音頻譜，且感測電子裝置於一第二操作狀態下之一第二噪音頻譜。處理單元耦接於儲存單元與聲音感測單元。處理單元根據第一噪音頻譜與第二噪音頻譜產生一差異噪音頻譜。處理單元根據差異噪音頻譜與參考噪音頻譜產生一噪音總和。處理單元比較噪音總和與一預設噪音準位。當噪音總和小於或等於預設噪音準位時，處理單元判斷電子裝置所產生之噪音可接受。當噪音總和大於預設噪音準位時，處理單元判斷電子裝置所產生之噪音不可接受。 According to another embodiment, the noise determination device of the present invention includes a storage unit, a sound sensing unit, and a processing unit. The storage unit stores a reference noise spectrum. The sound sensing unit senses a first noise spectrum of an electronic device in a first operating state, and senses a second noise spectrum of the electronic device in a second operating state. The processing unit is coupled to the storage unit and the sound sensing unit. The processing unit generates a differential noise spectrum according to the first noise spectrum and the second noise spectrum. The processing unit generates a noise sum according to the difference noise spectrum and the reference noise spectrum. The processing unit compares the total noise with a preset noise level. When the total noise is less than or equal to the preset noise level, the processing unit determines that the noise generated by the electronic device is acceptable. When the total noise is greater than the preset noise level, the processing unit determines that the noise generated by the electronic device is unacceptable.

綜上所述，本發明可預先以對應電子裝置之複數個標準裝置產生參考噪音頻譜。在對電子裝置進行噪音檢測時，本發明可先感測電子裝置之動件於不同操作狀態下之第一噪音頻譜與第二噪音頻譜，再根據第一噪音頻譜與第二噪音頻譜產生差異噪音頻譜，以濾除環境噪音。接著，本發明係根據差異噪音頻譜與參考噪音頻譜產生噪音總和，再以噪音總和與預設噪音準位之比較結果判斷電子裝置所產生之噪音是否可接受。由於本發明係以噪音頻譜作為判斷標準，而非以音壓大小作為判斷標準，且在噪音檢測的過程中，本發明已將環境噪音濾除，因此，本發明可有效提升噪音檢測的準確性。 In summary, the present invention can generate the reference noise spectrum in advance with a plurality of standard devices corresponding to the electronic device. When performing noise detection on an electronic device, the present invention can first sense the first noise spectrum and the second noise spectrum of the moving parts of the electronic device in different operating states, and then generate differential noise based on the first noise spectrum and the second noise spectrum Spectrum to filter out environmental noise. Next, the present invention generates a sum of noise based on the difference noise spectrum and the reference noise spectrum, and then judges whether the noise generated by the electronic device is acceptable based on the comparison result of the sum of noise and the preset noise level. Since the present invention uses the noise spectrum as the judgment standard instead of the sound pressure as the judgment standard, and in the process of noise detection, the present invention has already filtered out the environmental noise. Therefore, the present invention can effectively improve the accuracy of noise detection. .

關於本發明之優點與精神可以藉由以下的發明詳述及所附圖式得到進一步的瞭解。 The advantages and spirit of the present invention can be further understood from the following detailed description of the invention and the accompanying drawings.

1:噪音判斷裝置 1: Noise judging device

10:儲存單元 10: Storage unit

12:聲音感測單元 12: Sound sensing unit

14:處理單元 14: Processing unit

S10~S20:步驟 S10~S20: steps

第1圖為根據本發明一實施例之噪音判斷裝置的功能方塊圖。 Figure 1 is a functional block diagram of a noise determining device according to an embodiment of the invention.

第2圖為標準裝置之樣本差異噪音頻譜之產生方式的示意圖。 Figure 2 is a schematic diagram of the generation method of the sample difference noise spectrum of the standard device.

第3圖為參考噪音頻譜之產生方式的示意圖。 Figure 3 is a schematic diagram of how the reference noise spectrum is generated.

第4圖為電子裝置之差異噪音頻譜之產生方式的示意圖。 Figure 4 is a schematic diagram of how the differential noise spectrum of an electronic device is generated.

第5圖為根據本發明一實施例之噪音判斷方法的流程圖。 Fig. 5 is a flowchart of a noise judgment method according to an embodiment of the present invention.

請參閱第1圖至第3圖，第1圖為根據本發明一實施例之噪音判斷裝置1的功能方塊圖，第2圖為標準裝置之樣本差異噪音頻譜之產生方式的示意圖，第3圖為參考噪音頻譜之產生方式的示意圖。 Please refer to Figures 1 to 3. Figure 1 is a functional block diagram of the noise judging device 1 according to an embodiment of the present invention, Figure 2 is a schematic diagram of the sample difference noise spectrum generation method of a standard device, Figure 3 It is a schematic diagram of the generation method of the reference noise spectrum.

如第1圖所示，噪音判斷裝置1包含一儲存單元10、一聲音感測單元12以及一處理單元14，其中處理單元14耦接於儲存單元10與聲音感測單元12。於此實施例中，噪音判斷裝置1可為一電腦或其它具有資料處理/運算功能之電子裝置；儲存單元10可為記憶體或其它資料儲存裝置；聲音感測單元12可為麥克風或其它聲音感測器；處理單元14可為具有資料處理/運算功能之處理器或控制器。一般而言，噪音判斷裝置1中還會設有運作時必要的軟硬體元件，如輸入/輸出連接埠、應用程式、電路板、電源供應器、通訊模組等，視實際應用而定。 As shown in FIG. 1, the noise determination device 1 includes a storage unit 10, a sound sensing unit 12 and a processing unit 14, wherein the processing unit 14 is coupled to the storage unit 10 and the sound sensing unit 12. In this embodiment, the noise determining device 1 can be a computer or other electronic device with data processing/arithmetic functions; the storage unit 10 can be a memory or other data storage device; the sound sensing unit 12 can be a microphone or other sound Sensor; the processing unit 14 can be a processor or controller with data processing/arithmetic functions. Generally speaking, the noise judging device 1 will also be equipped with necessary software and hardware components during operation, such as input/output ports, application programs, circuit boards, power supplies, communication modules, etc., depending on the actual application.

在以噪音判斷裝置1對一電子裝置進行檢測前，本發明可預先以對應此電子裝置之複數個標準裝置(golden device)產生參考噪音頻譜。舉例而言，若待檢測之電子裝置為某一特定型號之投影機，則上述之標準裝置即為用來校正與測試此投影機之標準投影機。此外，待檢測之電子裝置與標準裝置皆包含至少一動件。舉例而言，當待檢測之電子裝置與標準裝置為投影機時，上述之動件可為風扇、色輪或螢光輪。需說明的是，動件之種類係根據電子裝置之種類而定。 Before the noise determination device 1 is used to detect an electronic device, the present invention can generate a reference noise spectrum with a plurality of golden devices corresponding to the electronic device in advance. For example, if the electronic device to be tested is a projector of a certain model, the above-mentioned standard device is the standard projector used to calibrate and test the projector. In addition, both the electronic device to be tested and the standard device include at least one moving element. For example, when the electronic device and the standard device to be tested are projectors, the aforementioned moving parts can be fans, color wheels or fluorescent wheels. It should be noted that the type of moving parts depends on the type of electronic device.

首先，本發明可先以聲音感測單元12感測對應待檢測之電子裝置之複數個標準裝置於第一操作狀態下之複數個第一樣本噪音頻譜，且感測複數個標準裝置於第二操作狀態下之複數個第二樣本噪音頻譜。於此實施例中，標準裝置之動件於第一操作狀態下未啟動，且標準裝置之動件於第二操作狀態下啟 動。舉例而言，當動件為色輪時，色輪於第一操作狀態下未啟動，且色輪於第二操作狀態下啟動。進一步來說，當動件未啟動時(亦即，第一操作狀態)，可先以聲音感測單元12感測標準裝置所產生之第一樣本噪音頻譜。接著，當動件啟動時(亦即，第二操作狀態)，再以聲音感測單元12感測標準裝置所產生之第二樣本噪音頻譜。 First of all, the present invention can first use the sound sensing unit 12 to sense a plurality of first sample noise spectra of a plurality of standard devices corresponding to the electronic device to be tested in the first operating state, and sense the plurality of standard devices in the first operating state. 2. A plurality of second sample noise spectra in operating state. In this embodiment, the moving element of the standard device is not activated in the first operating state, and the moving element of the standard device is activated in the second operating state. move. For example, when the moving element is a color wheel, the color wheel is not activated in the first operating state, and the color wheel is activated in the second operating state. Furthermore, when the moving element is not activated (that is, the first operating state), the first sample noise spectrum generated by the standard device can be sensed by the sound sensing unit 12 first. Then, when the moving element is activated (that is, the second operating state), the second sample noise spectrum generated by the standard device is sensed by the sound sensing unit 12.

如第2圖所示，於第一操作狀態下(動件未啟動)，第一樣本噪音頻譜包含標準裝置之裝置噪音與環境噪音。一般而言，裝置噪音包含標準裝置本身之基礎噪音與變異噪音。基礎噪音係指每一個標準裝置啟動時皆會產生的噪音，而變異噪音係指每一個標準裝置因本身公差所產生的額外噪音。此外，如第2圖所示，於第二操作狀態下(動件啟動)，除了標準裝置之裝置噪音與環境噪音外，第二樣本噪音頻譜還包含動件噪音。因此，處理單元14可根據第一樣本噪音頻譜與第二樣本噪音頻譜之差異，得到標準裝置之樣本差異噪音頻譜。 As shown in Figure 2, in the first operating state (the moving part is not activated), the first sample noise spectrum includes the device noise of the standard device and the environmental noise. Generally speaking, device noise includes the basic noise and variable noise of the standard device itself. Basic noise refers to the noise generated by each standard device when it is activated, and variable noise refers to the additional noise generated by each standard device due to its own tolerance. In addition, as shown in Figure 2, in the second operating state (moving part activated), in addition to the device noise and environmental noise of the standard device, the second sample noise spectrum also includes moving part noise. Therefore, the processing unit 14 can obtain the sample difference noise spectrum of the standard device according to the difference between the first sample noise spectrum and the second sample noise spectrum.

進一步來說，處理單元14可根據第2圖所示之方式得到複數個標準裝置之複數個第一樣本噪音頻譜與複數個第二樣本噪音頻譜，且根據複數個第一樣本噪音頻譜與複數個第二樣本噪音頻譜產生複數個標準裝置之複數個樣本差異噪音頻譜。接著，處理單元14即可根據複數個標準裝置之複數個樣本差異噪音頻譜產生參考噪音頻譜，如第3圖所示。於此實施例中，處理單元14可根據複數個樣本差異噪音頻譜中的每一個頻率之噪音之交集、聯集、平均或正規化中心點，產生參考噪音頻譜。儲存單元10即是用以儲存參考噪音頻譜。於此實施例中，在產生參考噪音頻譜後，處理單元14可進一步對參考噪音頻譜進行量化處理，以減少資料量。需說明的是，量化處理之程序與原理係為習知技藝之人所熟知，在此不再贅述。 Furthermore, the processing unit 14 can obtain a plurality of first sample noise spectra and a plurality of second sample noise spectra of a plurality of standard devices according to the method shown in FIG. 2, and according to the multiple first sample noise spectra and A plurality of second sample noise spectra generates a plurality of sample difference noise spectra of a plurality of standard devices. Then, the processing unit 14 can generate a reference noise spectrum based on the difference noise spectrum of a plurality of samples of a plurality of standard devices, as shown in FIG. 3. In this embodiment, the processing unit 14 can generate a reference noise spectrum based on the intersection, union, average, or normalized center point of the noise of each frequency in the multiple sample difference noise spectrum. The storage unit 10 is used to store the reference noise spectrum. In this embodiment, after the reference noise spectrum is generated, the processing unit 14 may further quantize the reference noise spectrum to reduce the amount of data. It should be noted that the procedures and principles of quantitative processing are well-known to those who are familiar with the art, so I will not repeat them here.

請參閱第4圖，第4圖為電子裝置之差異噪音頻譜之產生方式的示意圖。在以噪音判斷裝置1對電子裝置(例如，投影機)進行檢測時，聲音感測單 元12感測電子裝置於第一操作狀態下之一第一噪音頻譜，且感測電子裝置於第二操作狀態下之一第二噪音頻譜。接著，處理單元14會根據第一噪音頻譜與第二噪音頻譜產生一差異噪音頻譜。 Please refer to Figure 4. Figure 4 is a schematic diagram of the generation method of the differential noise spectrum of the electronic device. When detecting an electronic device (for example, a projector) with the noise judging device 1, the sound sensing unit Element 12 senses a first noise spectrum of the electronic device in the first operating state, and senses a second noise spectrum of the electronic device in the second operating state. Then, the processing unit 14 generates a differential noise spectrum according to the first noise spectrum and the second noise spectrum.

如上所述，電子裝置之動件於第一操作狀態下未啟動，且電子裝置之動件於第二操作狀態下啟動。進一步來說，當動件未啟動時(亦即，第一操作狀態)，可先以聲音感測單元12感測電子裝置所產生之第一噪音頻譜。接著，當動件啟動時(亦即，第二操作狀態)，再以聲音感測單元12感測電子裝置所產生之第二噪音頻譜。 As described above, the moving element of the electronic device is not activated in the first operating state, and the moving element of the electronic device is activated in the second operating state. Furthermore, when the moving element is not activated (that is, the first operating state), the first noise spectrum generated by the electronic device can be sensed by the sound sensing unit 12 first. Then, when the moving element is activated (that is, in the second operating state), the second noise spectrum generated by the electronic device is sensed by the sound sensing unit 12.

如第4圖所示，於第一操作狀態下(動件未啟動)，第一噪音頻譜包含電子裝置之裝置噪音與環境噪音。一般而言，裝置噪音包含電子裝置本身之基礎噪音與變異噪音。基礎噪音係指每一個電子裝置啟動時皆會產生的噪音，而變異噪音係指每一個電子裝置因本身公差所產生的額外噪音。此外，如第4圖所示，於第二操作狀態下(動件啟動)，除了電子裝置之裝置噪音與環境噪音外，第二噪音頻譜還包含動件噪音。因此，處理單元14可根據第一噪音頻譜與第二噪音頻譜之差異，得到電子裝置之差異噪音頻譜。 As shown in Figure 4, in the first operating state (the moving part is not activated), the first noise spectrum includes the device noise of the electronic device and the environmental noise. Generally speaking, device noise includes the basic noise and variable noise of the electronic device itself. Basic noise refers to the noise generated by each electronic device when it is activated, and variable noise refers to the additional noise generated by each electronic device due to its own tolerance. In addition, as shown in FIG. 4, in the second operating state (the moving part is activated), in addition to the device noise and environmental noise of the electronic device, the second noise spectrum also includes the moving part noise. Therefore, the processing unit 14 can obtain the difference noise spectrum of the electronic device according to the difference between the first noise spectrum and the second noise spectrum.

接著，處理單元14會根據差異噪音頻譜與上述之參考噪音頻譜產生一噪音總和。於此實施例中，處理單元14可將差異噪音頻譜與參考噪音頻譜中的每一個頻率之噪音相減、取絕對值再加總，以產生噪音總和。 Then, the processing unit 14 generates a noise sum based on the difference noise spectrum and the aforementioned reference noise spectrum. In this embodiment, the processing unit 14 may subtract the noise of each frequency in the difference noise spectrum and the reference noise spectrum, take the absolute value, and then add the total to generate the total noise.

於另一實施例中，處理單元14可先根據差異噪音頻譜與參考噪音頻譜產生一比對噪音頻譜。進一步來說，處理單元14可將差異噪音頻譜與參考噪音頻譜中的每一個頻率之噪音相減再取絕對值，以產生比對噪音頻譜。接著，處理單元14可對比對噪音頻譜進行頻率加權處理，以產生一加權噪音頻譜。進一步來說，處理單元14可以聲學中的加權曲線(weighting curve)對比對噪音頻譜進行頻率加權處理，以針對特定音頻進行檢測。舉例而言，若欲針對人耳對 音頻的感受進行檢測，可以加權曲線中的A加權對比對噪音頻譜進行頻率加權處理；若欲針對較為吵雜的機械噪音進行檢測，可以加權曲線中的C加權對比對噪音頻譜進行頻率加權處理；若欲針對航空噪音進行檢測，可以加權曲線中的D加權對比對噪音頻譜進行頻率加權處理；若欲針對超低頻噪音進行檢測，可以加權曲線中的G加權對比對噪音頻譜進行頻率加權處理。接著，處理單元14再根據加權噪音頻譜產生噪音總和。進一步來說，處理單元14可將加權噪音頻譜中的每一個頻率之噪音加總，以產生噪音總和。 In another embodiment, the processing unit 14 may first generate a comparison noise spectrum based on the difference noise spectrum and the reference noise spectrum. Furthermore, the processing unit 14 may subtract the difference noise spectrum from the noise of each frequency in the reference noise spectrum and then obtain an absolute value to generate a comparison noise spectrum. Then, the processing unit 14 may perform frequency weighting processing on the noise spectrum to generate a weighted noise spectrum. Further, the processing unit 14 may perform frequency weighting processing on the noise spectrum in comparison with a weighting curve in the acoustics, so as to perform detection for a specific audio. For example, if you want to target the human ear To detect the audio experience, you can perform frequency weighting processing on the noise spectrum by the A-weighting comparison in the weighting curve; if you want to detect more noisy mechanical noise, you can perform the frequency weighting processing on the noise spectrum by the C-weighting comparison in the weighting curve; If you want to detect aviation noise, you can perform frequency weighting processing on the noise spectrum by D-weighting comparison in the weighting curve; if you want to detect ultra-low frequency noise, you can perform frequency weighting processing on the noise spectrum by G-weighting comparison in the weighting curve. Then, the processing unit 14 generates a noise sum based on the weighted noise spectrum. Furthermore, the processing unit 14 may sum the noise of each frequency in the weighted noise spectrum to generate a total noise.

在產生噪音總和後，處理單元14比較噪音總和與一預設噪音準位，其中預設噪音準位可根據可接受之噪音大小而設定。當噪音總和小於或等於預設噪音準位時，處理單元14即會判斷電子裝置所產生之噪音可接受。當噪音總和大於預設噪音準位時，處理單元14即會判斷電子裝置所產生之噪音不可接受。由於本發明係以噪音頻譜作為判斷標準，而非以音壓大小作為判斷標準，且在噪音檢測的過程中，本發明已將環境噪音濾除，因此，本發明可有效提升噪音檢測的準確性。 After the total noise is generated, the processing unit 14 compares the total noise with a preset noise level, where the preset noise level can be set according to the acceptable noise level. When the total noise is less than or equal to the preset noise level, the processing unit 14 determines that the noise generated by the electronic device is acceptable. When the total noise is greater than the preset noise level, the processing unit 14 will determine that the noise generated by the electronic device is unacceptable. Since the present invention uses the noise spectrum as the judgment standard instead of the sound pressure as the judgment standard, and in the process of noise detection, the present invention has already filtered out the environmental noise. Therefore, the present invention can effectively improve the accuracy of noise detection. .

請參閱第5圖，第5圖為根據本發明一實施例之噪音判斷方法的流程圖。第5圖中的噪音判斷方法適用於第1圖中的噪音判斷裝置1。首先，執行步驟S10，提供參考噪音頻譜。接著，執行步驟S12，感測電子裝置於第一操作狀態下之第一噪音頻譜，感測電子裝置於第二操作狀態下之第二噪音頻譜，且根據第一噪音頻譜與第二噪音頻譜產生差異噪音頻譜。接著，執行步驟S14，根據差異噪音頻譜與參考噪音頻譜產生噪音總和。接著，執行步驟S16，比較噪音總和與預設噪音準位。當噪音總和小於或等於預設噪音準位時，執行步驟S18，判斷電子裝置所產生之噪音可接受。當噪音總和大於預設噪音準位時，執行步驟S20，判斷電子裝置所產生之噪音不可接受。 Please refer to FIG. 5. FIG. 5 is a flowchart of a noise determination method according to an embodiment of the present invention. The noise judging method in Fig. 5 is applicable to the noise judging device 1 in Fig. 1. First, perform step S10 to provide a reference noise spectrum. Then, step S12 is performed to sense the first noise spectrum of the electronic device in the first operating state, sense the second noise spectrum of the electronic device in the second operating state, and generate according to the first noise spectrum and the second noise spectrum Difference noise spectrum. Then, step S14 is executed to generate a noise sum based on the difference noise spectrum and the reference noise spectrum. Then, step S16 is executed to compare the total noise with the preset noise level. When the total noise is less than or equal to the preset noise level, step S18 is executed to determine that the noise generated by the electronic device is acceptable. When the total noise is greater than the preset noise level, step S20 is executed to determine that the noise generated by the electronic device is unacceptable.

需說明的是，本發明之噪音判斷方法之詳細實施例係如上所述，在 此不再贅述。此外，本發明之噪音判斷方法的控制邏輯中的各個部分或功能皆可透過軟硬體的組合來實現。 It should be noted that the detailed embodiment of the noise judgment method of the present invention is as described above. This will not be repeated here. In addition, each part or function in the control logic of the noise judgment method of the present invention can be realized through a combination of software and hardware.

綜上所述，本發明可預先以對應電子裝置之複數個標準裝置產生參考噪音頻譜。在對電子裝置進行噪音檢測時，本發明可先感測電子裝置之動件於不同操作狀態下之第一噪音頻譜與第二噪音頻譜，再根據第一噪音頻譜與第二噪音頻譜產生差異噪音頻譜，以濾除環境噪音。接著，本發明係根據差異噪音頻譜與參考噪音頻譜產生噪音總和，再以噪音總和與預設噪音準位之比較結果判斷電子裝置所產生之噪音是否可接受。由於本發明係以噪音頻譜作為判斷標準，而非以音壓大小作為判斷標準，且在噪音檢測的過程中，本發明已將環境噪音濾除，因此，本發明可有效提升噪音檢測的準確性。 In summary, the present invention can generate the reference noise spectrum in advance with a plurality of standard devices corresponding to the electronic device. When performing noise detection on an electronic device, the present invention can first sense the first noise spectrum and the second noise spectrum of the moving parts of the electronic device in different operating states, and then generate differential noise based on the first noise spectrum and the second noise spectrum Spectrum to filter out environmental noise. Next, the present invention generates a sum of noise based on the difference noise spectrum and the reference noise spectrum, and then judges whether the noise generated by the electronic device is acceptable based on the comparison result of the sum of noise and the preset noise level. Since the present invention uses the noise spectrum as the judgment standard instead of the sound pressure as the judgment standard, and in the process of noise detection, the present invention has already filtered out the environmental noise. Therefore, the present invention can effectively improve the accuracy of noise detection. .

以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 The foregoing descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

S10~S20:步驟 S10~S20: steps

Claims (10)

一種噪音判斷方法，包含：提供一參考噪音頻譜；感測一電子裝置於一第一操作狀態下之一第一噪音頻譜，感測該電子裝置於一第二操作狀態下之一第二噪音頻譜，且根據該第一噪音頻譜與該第二噪音頻譜產生一差異噪音頻譜；將該差異噪音頻譜與該參考噪音頻譜中的每一個頻率之噪音相減、取絕對值再加總以產生一噪音總和；比較該噪音總和與一預設噪音準位；當該噪音總和小於或等於該預設噪音準位時，判斷該電子裝置所產生之噪音可接受；以及當該噪音總和大於該預設噪音準位時，判斷該電子裝置所產生之噪音不可接受。 A noise judgment method includes: providing a reference noise spectrum; sensing a first noise spectrum of an electronic device in a first operating state, and sensing a second noise spectrum of the electronic device in a second operating state , And generate a difference noise spectrum based on the first noise spectrum and the second noise spectrum; subtract the difference noise spectrum from the noise of each frequency in the reference noise spectrum, take the absolute value, and add the total to generate a noise Sum; compare the sum of the noise with a preset noise level; when the sum of the noise is less than or equal to the preset noise level, determine that the noise generated by the electronic device is acceptable; and when the sum of the noise is greater than the preset noise When the level is set, it is judged that the noise generated by the electronic device is unacceptable. 如請求項1所述之噪音判斷方法，另包含：感測對應該電子裝置之複數個標準裝置於該第一操作狀態下之複數個第一樣本噪音頻譜，感測該複數個標準裝置於該第二操作狀態下之複數個第二樣本噪音頻譜，且根據該複數個第一樣本噪音頻譜與該複數個第二樣本噪音頻譜產生複數個樣本差異噪音頻譜；以及根據該複數個樣本差異噪音頻譜中的每一個頻率之噪音之交集、聯集、平均或正規化中心點產生該參考噪音頻譜。 The noise judgment method according to claim 1, further comprising: sensing a plurality of first sample noise spectra of a plurality of standard devices corresponding to the electronic device in the first operating state, and sensing that the plurality of standard devices are A plurality of second sample noise spectra in the second operating state, and a plurality of sample difference noise spectra are generated according to the plurality of first sample noise spectra and the plurality of second sample noise spectra; and according to the plurality of sample differences The intersection, union, averaging, or normalization center point of the noise of each frequency in the noise spectrum generates the reference noise spectrum. 如請求項1所述之噪音判斷方法，另包含：對該參考噪音頻譜進行量化處理。 The noise judgment method according to claim 1, further comprising: performing quantization processing on the reference noise spectrum. 如請求項1所述之噪音判斷方法，其中根據該差異噪音頻譜與該參考噪音頻譜產生一噪音總和之步驟包含： 根據該差異噪音頻譜與該參考噪音頻譜產生一比對噪音頻譜；對該比對噪音頻譜進行頻率加權處理，以產生一加權噪音頻譜；以及根據該加權噪音頻譜產生該噪音總和。 The noise judgment method according to claim 1, wherein the step of generating a noise sum based on the difference noise spectrum and the reference noise spectrum includes: Generate a comparison noise spectrum based on the difference noise spectrum and the reference noise spectrum; perform frequency weighting processing on the comparison noise spectrum to generate a weighted noise spectrum; and generate the total noise based on the weighted noise spectrum. 如請求項1所述之噪音判斷方法，其中該電子裝置包含至少一動件，該至少一動件於該第一操作狀態下未啟動，且該至少一動件於該第二操作狀態下啟動。 The noise determination method according to claim 1, wherein the electronic device includes at least one moving element, the at least one moving element is not activated in the first operating state, and the at least one moving element is activated in the second operating state. 一種噪音判斷裝置，包含：一儲存單元，儲存一參考噪音頻譜；一聲音感測單元，感測一電子裝置於一第一操作狀態下之一第一噪音頻譜，且感測該電子裝置於一第二操作狀態下之一第二噪音頻譜；以及一處理單元，耦接於該儲存單元與該聲音感測單元，該處理單元根據該第一噪音頻譜與該第二噪音頻譜產生一差異噪音頻譜，該處理單元將該差異噪音頻譜與該參考噪音頻譜中的每一個頻率之噪音相減、取絕對值再加總以產生一噪音總和，該處理單元比較該噪音總和與一預設噪音準位，當該噪音總和小於或等於該預設噪音準位時，該處理單元判斷該電子裝置所產生之噪音可接受，當該噪音總和大於該預設噪音準位時，該處理單元判斷該電子裝置所產生之噪音不可接受。 A noise judging device includes: a storage unit that stores a reference noise spectrum; a sound sensing unit that senses a first noise spectrum of an electronic device in a first operating state, and senses that the electronic device is in a A second noise spectrum in the second operating state; and a processing unit coupled to the storage unit and the sound sensing unit, the processing unit generating a difference noise spectrum according to the first noise spectrum and the second noise spectrum , The processing unit subtracts the difference noise spectrum from the noise of each frequency in the reference noise spectrum, takes the absolute value and sums it up to generate a noise sum, and the processing unit compares the noise sum with a preset noise level , When the total noise is less than or equal to the preset noise level, the processing unit determines that the noise generated by the electronic device is acceptable, and when the total noise is greater than the preset noise level, the processing unit determines that the electronic device The noise generated is unacceptable. 如請求項6所述之噪音判斷裝置，其中該聲音感測單元感測對應該電子裝置之複數個標準裝置於該第一操作狀態下之複數個第一樣本噪音頻譜，且感測該複數個標準裝置於該第二操作狀態下之複數個第二樣本噪音頻譜；該處理單元根據該複數個第一樣本噪音頻譜與該複數個第二樣本噪音頻譜產生複數個樣本差異噪音頻譜，且根據該複數個樣本差異噪音頻譜中的每一個頻率之噪音之交集、聯集、平均或正規化中心點產生該參考噪音頻譜。 The noise determination device according to claim 6, wherein the sound sensing unit senses a plurality of first sample noise spectra of a plurality of standard devices corresponding to the electronic device in the first operating state, and senses the plurality of noise spectra A plurality of second sample noise spectra of a standard device in the second operating state; the processing unit generates a plurality of sample difference noise spectra according to the plurality of first sample noise spectra and the plurality of second sample noise spectra, and The reference noise spectrum is generated according to the intersection, union, averaging, or normalized center point of the noise of each frequency in the plurality of sample differences in the noise spectrum. 如請求項6所述之噪音判斷裝置，其中該處理單元對該參考噪音頻譜進行量化處理。 The noise determination device according to claim 6, wherein the processing unit performs quantization processing on the reference noise spectrum. 如請求項6所述之噪音判斷裝置，其中該處理單元根據該差異噪音頻譜與該參考噪音頻譜產生一比對噪音頻譜，該處理單元對該比對噪音頻譜進行頻率加權處理，以產生一加權噪音頻譜，且該處理單元根據該加權噪音頻譜產生該噪音總和。 The noise determination device according to claim 6, wherein the processing unit generates a comparison noise spectrum based on the difference noise spectrum and the reference noise spectrum, and the processing unit performs frequency weighting processing on the comparison noise spectrum to generate a weight Noise spectrum, and the processing unit generates the noise sum according to the weighted noise spectrum. 如請求項6所述之噪音判斷裝置，其中該電子裝置包含至少一動件，該至少一動件於該第一操作狀態下未啟動，且該至少一動件於該第二操作狀態下啟動。 The noise determination device according to claim 6, wherein the electronic device includes at least one moving element, the at least one moving element is not activated in the first operating state, and the at least one moving element is activated in the second operating state.
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