Radio dynamic correction method and electronic system

Abstract

A dynamic correction method for sound reception is suitable for an electronic device, and the electronic device comprises an audio processor, a microphone in signal connection with the audio processor, and a sound reception hole corresponding to the microphone. The dynamic correction method for sound reception comprises the following steps: an audio processor executes a first dynamic correction sound reception process according to a first airtight numerical value curve obtained by a numerical value difference value between a first frequency response curve and a second frequency response curve; and the audio processor obtains the adjusted second frequency response curve by executing the first dynamic correction reception process.

Description

Technical Field

[0001] The present invention relates to a dynamic correction method and an electronic system, and in particular to a dynamic correction method and an electronic system for receiving sound. Background Art

[0002] When receiving sound, the microphone of the electronic device may receive nonlinear sound energy transmitted due to structural vibration caused by sound energy, thus affecting the sound reception effect. The prior art reduces the nonlinear sound energy transmitted by adding a shock-absorbing structure to the electronic device or increasing the airtightness value of the stacked structure in front and behind the microphone. However, the above methods increase the material cost and make the structure of the electronic device more complicated. Summary of the invention

[0003] The invention provides a dynamic correction method for sound reception, which can dynamically correct the sound reception without requiring additional material costs.

[0004] The present invention provides an electronic system which can execute the above method.

[0005] A dynamic correction method for sound reception of the present invention is applicable to an electronic device, wherein the electronic device includes an audio processor, a microphone whose signal is connected to the audio processor, and a sound receiving hole corresponding to the microphone. The dynamic correction method for sound reception includes: the audio processor obtains a first airtight numerical curve based on the numerical difference between the first frequency response curve and the second frequency response curve to perform a first dynamic correction sound reception process; and the audio processor obtains an adjusted second frequency response curve by performing the first dynamic correction sound reception process.

[0006] In one embodiment of the present invention, when the sound receiving hole of the microphone remains unobstructed, the microphone receives the sound emitted by the first speaker and obtains a first frequency response curve; when the sound receiving hole of the microphone is closed, the microphone receives the sound emitted by the first speaker and obtains a second frequency response curve.

[0007] In one embodiment of the present invention, the above-mentioned first dynamic correction sound reception process includes that in at least one frequency segment where the decibel value in the first airtight numerical curve is a negative number, the audio processor reduces the decibel value of the second frequency response curve in at least one frequency segment to obtain an adjusted second frequency response curve, and the decibel value of the adjusted second frequency response curve in at least one frequency segment is less than or equal to the decibel value of the first frequency response curve in the corresponding at least one frequency segment.

[0008] In one embodiment of the present invention, the decibel value of the adjusted second frequency response curve in at least one frequency segment is 0-15 decibels smaller than the decibel value of the first frequency response curve in the corresponding at least one frequency segment.

[0009] In one embodiment of the present invention, the at least one frequency segment mentioned above includes multiple frequency segments, and the audio processor reduces the decibel values ​​of the second frequency response curve in these frequency segments according to multiple differences between the first frequency response curve and the second frequency response curve in these frequency segments to obtain an adjusted second frequency response curve.

[0010] In one embodiment of the present invention, the at least one frequency segment mentioned above includes multiple frequency segments, and the audio processor reduces the decibel values ​​of the second frequency response curve in these frequency segments according to the maximum difference among multiple differences between the first frequency response curve and the second frequency response curve in these frequency segments to obtain an adjusted second frequency response curve.

[0011] In an embodiment of the present invention, the first speaker is disposed in an electronic device.

[0012] In one embodiment of the present invention, the above-mentioned dynamic correction method for sound reception also includes: when the sound receiving hole remains unobstructed, the microphone receives the sound emitted by the second speaker to obtain a third frequency response curve; when the sound receiving hole is closed, the microphone receives the sound emitted by the second speaker to obtain a fourth frequency response curve; the audio processor performs a second dynamic correction sound reception process based on a second airtight numerical curve obtained according to the numerical difference between the third frequency response curve and the fourth frequency response curve; and the audio processor obtains an adjusted fourth frequency response curve by executing the second dynamic correction sound reception process.

[0013] In one embodiment of the present invention, the above-mentioned second dynamic correction sound reception process includes causing the audio processor to reduce the decibel value of the fourth frequency response curve in at least one frequency segment where the decibel value in the second airtight numerical curve is a negative number to obtain an adjusted fourth frequency response curve, and the decibel value of the adjusted fourth frequency response curve in at least one frequency segment is less than or equal to the decibel value of the third frequency response curve in at least one corresponding frequency segment.

[0014] In one embodiment of the present invention, in the above-mentioned second dynamic correction sound recording process, the decibel value of the adjusted fourth frequency response curve in at least one frequency segment is 0 to 15 decibels smaller than the decibel value of the third frequency response curve in at least one corresponding frequency segment.

[0015] In one embodiment of the present invention, the at least one frequency segment mentioned above includes multiple frequency segments, and the audio processor reduces the decibel values ​​of the fourth frequency response curve in these frequency segments according to multiple differences between the third frequency response curve and the fourth frequency response curve in these frequency segments to obtain an adjusted fourth frequency response curve.

[0016] In one embodiment of the present invention, the at least one frequency segment mentioned above includes multiple frequency segments, and the audio processor reduces the decibel values ​​of the fourth frequency response curve in these frequency segments according to the maximum difference among multiple differences between the third frequency response curve and the fourth frequency response curve in these frequency segments to obtain an adjusted fourth frequency response curve.

[0017] In an embodiment of the present invention, one of the first speaker and the second speaker is located inside the electronic device, and the other is located outside the electronic device.

[0018] An electronic system of the present invention includes an electronic device, wherein the electronic device includes an audio processor, a microphone, and a sound receiving hole. The microphone signal is connected to the audio processor. The sound receiving hole corresponds to the microphone. The audio processor performs a first dynamic correction sound receiving process and obtains an adjusted second frequency response curve according to a first airtight numerical curve obtained by a numerical difference between a first frequency response curve and a second frequency response curve.

[0019] In one embodiment of the present invention, the electronic system further comprises a first speaker, wherein when the sound receiving hole of the microphone remains unobstructed, the microphone receives the sound emitted by the first speaker to obtain a first frequency response curve; and when the sound receiving hole of the microphone is closed, the microphone receives the sound emitted by the first speaker to obtain a second frequency response curve.

[0020] In one embodiment of the present invention, the above-mentioned audio processor reduces the decibel value of the second frequency response curve in at least one frequency segment in which the decibel value in the first airtight numerical curve is a negative number, and obtains an adjusted second frequency response curve, wherein the decibel value of the adjusted second frequency response curve in at least one frequency segment is less than or equal to the decibel value of the first frequency response curve in the corresponding at least one frequency segment.

[0021] In one embodiment of the present invention, the audio processor makes the decibel value of the adjusted second frequency response curve in at least one frequency segment smaller than the decibel value of the first frequency response curve in at least one corresponding frequency segment by 0-15 decibels.

[0022] In one embodiment of the present invention, the electronic system further includes a second speaker, one of the first speaker and the second speaker is located inside the electronic device, and the other is located outside the electronic device, the microphone receives sound emitted by the second speaker while the sound receiving hole remains unobstructed, so that the audio processor obtains a third frequency response curve, the microphone receives sound emitted by the second speaker while the sound receiving hole is closed, so that the audio processor obtains a fourth frequency response curve, and the audio processor executes a second dynamic correction sound receiving process and obtains an adjusted fourth frequency response curve based on a second airtight numerical curve obtained according to the numerical difference between the third frequency response curve and the fourth frequency response curve.

[0023] In one embodiment of the present invention, the above-mentioned audio processor reduces the decibel value of the fourth frequency response curve in at least one frequency segment where the decibel value is negative in the second airtight numerical curve to obtain an adjusted fourth frequency response curve, and the decibel value of the adjusted fourth frequency response curve in at least one frequency segment is less than or equal to the decibel value of the third frequency response curve in at least one corresponding frequency segment.

[0024] In one embodiment of the present invention, the audio processor makes the decibel value of the adjusted fourth frequency response curve in at least one frequency segment 0-15 decibels smaller than the decibel value of the third frequency response curve in at least one corresponding frequency segment.

[0025] In one embodiment of the present invention, the electronic system further includes a remote device, which is signal-connected to the audio processor. The audio processor receives the sound signal from the remote device and transmits it to the first speaker or the second speaker in the electronic device for playback.

[0026] In one embodiment of the present invention, the electronic device includes a memory electrically connected to the audio processor, and the memory is used to store the first airtight value curve.

[0027] Based on the above, in the electronic system and the dynamic correction method of the sound reception of the present invention, the audio processor performs the first dynamic correction sound reception process according to the first airtight numerical curve obtained by the numerical difference between the first frequency response curve and the second frequency response curve, and the audio processor obtains the adjusted second frequency response curve by performing the first dynamic correction sound reception process. If the second frequency response curve is a curve that can reflect the nonlinear transmission of sound energy, since the adjusted second frequency response curve has a lower influence on the first frequency response curve, the influence of the sound reception effect caused by the nonlinear transmission of sound energy can be effectively reduced without requiring additional material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of an electronic system according to an embodiment of the present invention.

[0029] Figure 2 The present invention is a flowchart of a method for dynamic correction of sound reception according to an embodiment of the present invention.

[0030] Figure 3 yes Figure 1 A measured diagram of a first frequency response curve and a second frequency response curve when a first speaker of an electronic system is operating.

[0031] Figure 4A It is a simple schematic diagram of a first frequency response curve and a second frequency response curve when the first speaker is operating.

[0032] Figure 4B It is a simple schematic diagram of the first airtight value curve.

[0033] Figure 4C yes Figure 4B A simple schematic diagram of a first frequency response curve and an adjusted second frequency response curve.

[0034] Figure 4D yes Figure 4B Another simple schematic diagram of a first frequency response curve and an adjusted second frequency response curve.

[0035] Figure 4E It is a simple schematic diagram of another first frequency response curve and a second frequency response curve when the first speaker is operating.

[0036] Figure 4F yes Figure 4E A simple schematic diagram of a first frequency response curve and an adjusted second frequency response curve.

[0037] Figure 4G yes Figure 4E Another simple schematic diagram of a first frequency response curve and an adjusted second frequency response curve.

[0038] Figure 5 yes Figure 1 The third frequency response curve and the fourth frequency response curve are actually measured when the second speaker of the electronic system is operating.

[0039] Explanation of symbols:

[0040] C1: First frequency response curve

[0041] C2: Second frequency response curve

[0042] C2': The second frequency response curve after adjustment

[0043] C3: Third frequency response curve

[0044] C4: Fourth frequency response curve

[0045] D1: The first airtight value curve

[0046] S1: thick dashed line

[0047] S2: Thin dotted line

[0048] 10: Electronic system

[0049] 20: Remote Device

[0050] 30: Second speaker

[0051] 100: Electronic devices

[0052] 110: Audio Processor

[0053] 120: Microphone

[0054] 130: Sound receiving hole

[0055] 140: Memory

[0056] 150: First Speaker

[0057] 200: Dynamic correction method for radio reception

[0058] 210~240: Steps DETAILED DESCRIPTION

[0059] For the convenience and clarity of explanation, the thickness or size of each element in the drawings is expressed in an exaggerated, omitted or schematic manner for the understanding and reading of those skilled in the art, and the size of each element is not completely its actual size, and is not used to limit the limiting conditions that the present invention can be implemented, so it has no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention. The same reference numerals will be used to represent the same or similar elements in all drawings.

[0060] Figure 1 is a schematic diagram of an electronic system according to an embodiment of the present invention. Figure 1, the electronic system 10 of this embodiment includes an electronic device 100 and a first speaker 150. The electronic device 100 takes a monitorable intercom installed at a door as an example, but the type of the electronic device 100 is not limited to this. The electronic device 100 includes an audio processor 110, a microphone 120, and a sound receiving hole 130. The microphone 120 is signal-connected to the audio processor 110. The sound receiving hole 130 can be set corresponding to the position of the microphone 120. In this embodiment, the first speaker 150 is located in the electronic device 100, is an internal speaker of the electronic device 100, and is signal-connected to the audio processor 110, but the type of the first speaker 150 is not limited to this.

[0061] The electronic system 10 further includes a remote device 20, which is signal-connected to the audio processor 110. The remote device 20 is, for example, a mobile phone or a tablet, but the type of the remote device 20 is not limited thereto. The audio processor 110 of the electronic device 100 can receive the sound signal of the remote device 20 and transmit it to the first speaker 150 in the electronic device 100 for playback.

[0062] When the first speaker 150 plays sound, the microphone 120 receives the sound entering from the sound receiving hole 130 (such as Figure 1 In addition to the thick dashed line S1, due to the sound energy played by the first speaker 150 (non-linear transmission of sound energy, such as Figure 1 The thin dotted line S2) may be transmitted from the inside of the electronic device 100 to the microphone 120 via the internal components (not shown) of the electronic device 100 (for example, the nonlinear transmission of sound energy may cause the internal components of the electronic device 100 to vibrate, which is then transmitted to the microphone 120), thereby affecting the overall sound reception effect and quality of the microphone 120.

[0063] The electronic system 10 of this embodiment can be implemented by a dynamic correction method 200 ( Figure 2 ) to effectively reduce the impact of nonlinear transmission of sound energy on the sound reception effect. This will be explained below.

[0064] Figure 2 2 is a flowchart of a method for dynamic correction of sound reception according to an embodiment of the present invention. Those skilled in the art of the present invention can understand that the method 200 for dynamic correction of sound reception according to the embodiment of the present invention is not limited to application in Figure 1 The electronic system 10 is not limited to Figure 2 The sequence of steps in the flowchart is shown in Figure 1. Figure 1 and Figure 2 The dynamic correction method 200 for receiving sound comprises the following steps. First, as in step 210, the audio processor 110 generates a first frequency response curve C1 ( Figure 3 , Figure 4A ) and the second frequency response curve C2( Figure 3 , Figure 4A ) obtained by the numerical difference between Figure 4B ) to perform the first dynamic correction sound reception process.

[0065] Specifically, as shown in step 212, when the sound receiving hole 130 remains unobstructed, the microphone 120 receives the sound emitted by the first speaker 150, and obtains a first frequency response curve C1; when the sound receiving hole 130 is closed (for example, the sound receiving hole 130 is blocked), the microphone 120 receives the sound emitted by the first speaker 150, and obtains a second frequency response curve C2.

[0066] Figure 3 yes Figure 1 The measured graph of the first frequency response curve and the second frequency response curve when the first speaker of the electronic system is operating. Figure 3 The first frequency response curve C1 is a curve of the microphone 120 receiving sound when the sound receiving hole 130 is kept unobstructed. In other words, the first frequency response curve C1 represents the sound energy ( Figure 1 The thick dashed line S1) and the nonlinear transmission sound energy ( Figure 1 The sum of the thin dashed line S2).

[0067] The second frequency response curve C2 is a curve of the microphone 120 receiving sound when the sound receiving hole 130 is closed. In other words, the second frequency response curve C2 is a curve of the microphone 120 receiving sound energy (nonlinear transmission) from the inside of the electronic device 100 when the sound receiving hole 130 is closed. Figure 1 The thin dotted line S2).

[0068] Depend on Figure 3 It can be seen that in the frequency range of 3KHz to 10KHz (high frequency), the first frequency response curve C1 is located above the second frequency response curve C2, which means that in this frequency range, the microphone 120 receives less nonlinear sound energy transmitted from the inside of the electronic device 100, and therefore the microphone 120 is less disturbed by the nonlinear sound energy.

[0069] On the other hand, in the frequency range of 500Hz to 3KHz (low frequency), the second frequency response curve C2 is located above the first frequency response curve C1, which means that in this frequency range, the microphone 120 receives more nonlinear sound energy transmitted from the inside of the electronic device 100, so the microphone 120 is more disturbed by the nonlinear sound energy, which affects the sound reception effect.

[0070] because Figure 3 The lines of the first frequency response curve C1 and the second frequency response curve C2 are relatively complex. In order to clearly and briefly illustrate the dynamic correction method 200 of the sound reception of this embodiment, the first frequency response curve C1 and the second frequency response curve C2 will be represented by simple curves below, and it will be explained how to achieve dynamic correction of sound reception through the first frequency response curve C1 and the second frequency response curve C2.

[0071] Figure 4A It is a simple schematic diagram of the first frequency response curve and the second frequency response curve when the first speaker is operating. It should be noted that Figure 4A The curve is simplified for ease of understanding. Figure 4A In the frequency range of 3KHz to 10KHz (high frequency), the first frequency response curve C1 is located above the second frequency response curve C2. In this frequency range, the decibel value of the response of the first frequency response curve C1 is 95dB, and the decibel value of the response of the second frequency response curve C2 is 85dB.

[0072] In the frequency range of 500Hz to 3KHz (low frequency), the second frequency response curve C2 is located above the first frequency response curve C1. In this frequency range, the decibel value of the response of the first frequency response curve C1 is 85dB, and the decibel value of the response of the second frequency response curve C2 is 110dB. Figure 4A It can be seen that in the frequency range of 500 Hz to 3 kHz (low frequency), the microphone 120 will be interfered by a larger nonlinear transmission sound energy.

[0073] After the audio processor 110 obtains the first frequency response curve C1 and the second frequency response curve C2, Figure 4B is a simple schematic diagram of the first airtightness value curve. Figure 4B , which illustrates the audio processor 110 ( Figure 1 ) A first airtight numerical curve D1 is obtained based on the numerical difference between the first frequency response curve C1 and the second frequency response curve C2.

[0074] Depend on Figure 4B It can be seen that the first airtight numerical curve D1 is a curve generated by subtracting the first frequency response curve C1 from the second frequency response curve C2. In the frequency range of 500 Hz to 3 KHz (low frequency), the decibel value of the response of the first airtight numerical curve D1 is -25 dB as an example. In the frequency range of 3 KHz to 10 KHz (high frequency), the decibel value of the response of the first airtight numerical curve D1 is 10 dB as an example.

[0075] Next, proceed Figure 2In step 220, the audio processor 110 obtains an adjusted second frequency response curve C2′ ( Figure 4C ). Specifically, the first dynamic correction sound recording process includes that in at least one frequency segment where the decibel value in the first airtight value curve D1 is negative, the audio processor 110 reduces the decibel value of the second frequency response curve C2 in this at least one frequency segment to obtain an adjusted second frequency response curve C2', and the decibel value of the adjusted second frequency response curve C2' in at least one frequency segment is less than or equal to the decibel value of the first frequency response curve C1 in the corresponding at least one frequency segment.

[0076] Figure 4C yes Figure 4B A simple diagram of a first frequency response curve and an adjusted second frequency response curve. Figure 4B and Figure 4C After obtaining the first airtight numerical curve D1, it can be known that the decibel value of the first airtight numerical curve D1 in the frequency range of 500 Hz to 3 kHz (low frequency) is a negative value.

[0077] Therefore, the audio processor 110 reduces the decibel value of the second frequency response curve C2 in the frequency range of 500 Hz to 3 kHz (low frequency), so that the decibel value of the adjusted second frequency response curve C2' in this frequency range is less than or equal to ( Figure 4C is equal to the decibel value of the first frequency response curve C1 in this frequency range. In this way, the degree to which the microphone 120 is disturbed by the nonlinear transmission of sound energy in this frequency range can be reduced.

[0078] According to experiments, the decibel value of the adjusted second frequency response curve C2' in at least one frequency segment is 0 to 15 decibels smaller than the decibel value of the first frequency response curve C1 in at least one corresponding frequency segment, which can effectively reduce the degree of interference of the microphone 120 by nonlinearly transmitted sound energy in at least one frequency segment, so that the microphone 120 has a good sound reception effect without distortion.

[0079] Depend on Figure 4C It can be seen that the first frequency response curve C1 is still the original curve, and the adjusted second frequency response curve C2' is the result of subtracting the first airtight value curve D1 from the original second frequency response curve C2 in the frequency range of 500 Hz to 3 kHz (low frequency).

[0080] Depend on Figure 4CIt can be clearly seen that the decibel value of the adjusted second frequency response curve C2' in the frequency range of 500 Hz to 3 kHz (low frequency) is the same as the decibel value of the first frequency response curve C1. Therefore, in the frequency range of 500 Hz to 3 kHz (low frequency), the influence of the adjusted second frequency response curve C2' on the first frequency response curve C1 can be effectively reduced. The microphone 120 can be less affected by the nonlinear transmission of sound energy and has a good performance.

[0081] In addition, with Figure 4A and Figure 4C It can be seen that since the first frequency response curve C1 is originally located above the original second frequency response curve C2 in the frequency range of 3KHz to 10KHz (high frequency), it is less affected by the nonlinear transmission of sound energy. Therefore, the adjusted second frequency response curve C2' can still maintain the original decibel value in the frequency range of 3KHz to 10KHz (high frequency).

[0082] Of course, the adjusted second frequency response curve C2 ′ is not limited thereto. Figure 4D yes Figure 4B Another simple diagram of the first frequency response curve and the adjusted second frequency response curve. Figure 4A , Figure 4B and Figure 4D , Figure 4D The adjusted second frequency response curve C2' is Figure 4C The main difference of the adjusted second frequency response curve C2' is that Figure 4D In the example, the adjusted second frequency response curve C2′ is obtained by converting the original second frequency response curve C2 ( Figure 4A ) minus the first airtight value curve D1( Figure 4B ) is the result of the largest negative value in . Figure 4D It can be seen that in the full frequency band, the first frequency response curve C1 is located above the adjusted second frequency response curve C2 ′, so that the microphone 120 is less affected by the nonlinear transmission of sound energy.

[0083] In one embodiment, if at least one frequency segment of the second frequency response curve C2 below the first frequency response curve C1 is a plurality of frequency segments, the audio processor 110 may respectively reduce the decibel values ​​of the second frequency response curve C2 in these frequency segments according to a plurality of differences between the first frequency response curve C1 and the second frequency response curve C2 in these frequency segments to obtain an adjusted second frequency response curve C2'.

[0084] For example, Figure 4E It is a simple diagram of another first frequency response curve and a second frequency response curve when the first speaker is operating. Figure 4E , the second frequency response curve C2 is located above the first frequency response curve C1 in the two frequency sections of 500Hz to 1KHz and 2KHz to 3KHz. Specifically, in the frequency section of 500Hz to 1KHz, the decibel value of the response of the second frequency response curve C2 is 92dB, and the decibel value of the response of the first frequency response curve C1 is 85dB. In the frequency section of 2KHz to 3KHz, the decibel value of the response of the second frequency response curve C2 is 87dB, and the decibel value of the response of the first frequency response curve C1 is 85dB.

[0085] Figure 4F yes Figure 4E A simple diagram of a first frequency response curve and an adjusted second frequency response curve. Figure 4E and Figure 4F , the audio processor 110 can reduce the second frequency response curve C2 by 7dB in the frequency range of 500Hz to 1KHz, and by 2dB in the frequency range of 2KHz to 3KHz, so that the adjusted second frequency response curve C2' is not located above the first frequency response curve C1 in the entire frequency range. Figure 4F For example, the adjusted second frequency response curve C2' overlaps the first frequency response curve C1 in the frequency range of 500 Hz to 1 KHz and the frequency range of 2 KHz to 3 KHz, and the adjusted second frequency response curve C2' is located below the first frequency response curve C1 in the frequency range of 1 KHz to 2 KHz and the frequency range of 3 KHz to 10 KHz.

[0086] Of course, in one embodiment, the audio processor 110 reduces the decibel values ​​of the second frequency response curve C2 in these frequency segments according to the maximum difference among the multiple differences between the first frequency response curve C1 and the second frequency response curve C2 in these frequency segments to obtain the adjusted second frequency response curve C2 ′.

[0087] For example, Figure 4G yes Figure 4E Another simple diagram of the first frequency response curve and the adjusted second frequency response curve. Figure 4E and Figure 4G , the audio processor 110 can reduce the second frequency response curve C2 by 7 dB in both the frequency range of 500 Hz to 1 KHz and the frequency range of 2 KHz to 3 KHz, so that the adjusted second frequency response curve C2' is not located above the first frequency response curve C1 in the entire frequency range. Figure 4GFor example, the adjusted second frequency response curve C2 ′ overlaps the first frequency response curve C1 in the frequency range of 500 Hz to 1 KHz, and the adjusted second frequency response curve C2 ′ is located below the first frequency response curve C1 in the frequency range of 1 KHz to 10 KHz.

[0088] Of course, although in Figure 4F and Figure 4G In the embodiment, the adjusted second frequency response curve C2' is not adjusted in the frequency ranges other than 500 Hz to 1 KHz and 2 KHz to 3 KHz. However, in other embodiments, the adjusted second frequency response curve C2' may also be as follows: Figure 4D The entire frequency band is shown to be adjusted together, without limitation to the figure.

[0089] Please go back Figure 1 In this embodiment, the electronic device 100 may further include a memory 140 electrically connected to the audio processor 110. The memory 140 is, for example, a memory or a hard disk. The memory 140 is used to store the first frequency response curve C1, the second frequency response curve C2, the first airtight value curve D1 and the adjusted second frequency response curve C2' for dynamic correction by the audio processor 110.

[0090] In addition, in other embodiments, the electronic system 10 further includes a second speaker 30. In this embodiment, the second speaker 30 is located outside the electronic device 100 and is an external speaker or an external sound source. Of course, in other embodiments, the electronic system 10 may also be such that one of the first speaker 150 and the second speaker 30 is located inside the electronic device 100 and the other is located outside the electronic device 100. The positions of the first speaker 150 and the second speaker 30 are not limited to the positions of the first speaker 150 and the second speaker 30. Figure 1 For restriction.

[0091] Similarly, although the second speaker 30 is located outside the electronic device 100, the sound energy of the second speaker 30 may be received by the microphone 120 through the sound receiving hole 130 or through the vibration of the housing and internal components of the electronic device 100 (non-linear transmission of sound energy).

[0092] Therefore, the audio processor 110 may also use the same or similar method to perform dynamic correction on the sound emitted by the second speaker 30 , so that the microphone 120 can obtain good sound reception quality.

[0093] like Figure 2 As shown, the dynamic correction method 200 for receiving sound may also optionally include step 230, the audio processor 110 receives the sound according to the third frequency response curve C3 ( Figure 5 ) and the fourth frequency response curve C4 ( Figure 5) to perform a second dynamic correction sound reception process.

[0094] Specifically, in step 232 , when the sound receiving hole 130 remains unobstructed, the microphone 120 receives the sound emitted by the second speaker 30 to obtain a third frequency response curve C3 ; when the sound receiving hole 130 is closed, the microphone 120 receives the sound emitted by the second speaker 30 to obtain a fourth frequency response curve C4 .

[0095] Next, in step 240, the audio processor 110 obtains the adjusted fourth frequency response curve by executing the second dynamic correction sound collection process. Further, the execution content of step 240 is similar to the execution content of step 220, and the difference between step 240 and step 220 is that step 240 executes the dynamic correction sound collection process according to the third frequency response curve C3 and the fourth frequency response curve C4.

[0096] Figure 5 yes Figure 1 The third frequency response curve and the fourth frequency response curve are measured when the second speaker of the electronic system is operating. Figure 5 In this embodiment, the third frequency response curve C3 is located above the fourth frequency response curve C4 in the entire frequency band, which means that the microphone 120 is less disturbed by the nonlinear transmission of sound energy, so the fourth frequency response curve C4 does not need to be adjusted.

[0097] In other embodiments, if the fourth frequency response curve C4 is located above the third frequency response curve C3 in a partial frequency band, the audio processor 110 may execute the second dynamic correction sound reception process. It should be noted that the execution method of the second dynamic correction sound reception process is similar to the execution method of the first dynamic correction sound reception process. For details, please refer to FIG. 4A to FIG. 4G That is to say, the execution content of step 240 is similar to the execution content of step 220, so it is only described in words below.

[0098] The second dynamic correction sound reception process includes causing the audio processor 110 to reduce the decibel value of the fourth frequency response curve C4 in at least one frequency segment where the decibel value in the second airtight numerical curve is negative to obtain an adjusted fourth frequency response curve, wherein the decibel value of the adjusted fourth frequency response curve in at least one frequency segment is less than or equal to the decibel value of the third frequency response curve C3 in at least one corresponding frequency segment.

[0099] In one embodiment, during the second dynamic correction sound reception process, the decibel value of the adjusted fourth frequency response curve in at least one frequency segment is 0 to 15 decibels smaller than the decibel value of the third frequency response curve C3 in at least one corresponding frequency segment, thereby enabling the microphone 120 to have a good sound reception effect.

[0100] In addition, in one embodiment, if at least one frequency segment of the fourth frequency response curve C4 that needs to be adjusted is a plurality of frequency segments, the audio processor 110 reduces the decibel values ​​of the fourth frequency response curve C4 in these frequency segments according to a plurality of differences between the third frequency response curve C3 and the fourth frequency response curve C4 in these frequency segments to obtain an adjusted fourth frequency response curve.

[0101] In another embodiment, the audio processor 110 may also reduce the decibel value of the fourth frequency response curve C4 in these frequency segments according to the maximum difference among the multiple differences between the third frequency response curve C3 and the fourth frequency response curve C4 in these frequency segments to obtain an adjusted fourth frequency response curve. The memory 140 may also be used to store the third frequency response curve C3, the fourth frequency response curve C4, the second airtight value curve and the adjusted fourth frequency response curve for the audio processor 110 to perform dynamic correction.

[0102] It is worth mentioning that if the microphone 120 receives the sound from the first speaker 150 and the sound from the second speaker 30 at the same time, the audio processor 110 may first suppress the sound of one of the speakers (e.g., the first speaker 150) and first dynamically correct the sound of the other speaker (e.g., the second speaker 30). The audio processor 110 may then suppress the sound of the other speaker (e.g., the second speaker 30) and dynamically correct the sound of the originally unprocessed speaker (e.g., the first speaker 150).

[0103] The electronic system 10 of the present embodiment may adopt a dynamic correction method 200 for sound reception. In the production line, each electronic device 100 may measure the first frequency response curve C1 and the second frequency response curve C2 of the microphone 120. The audio processor 110 may calculate the first airtight value curve D1 and the adjusted second frequency response curve C2' and store them in the memory 140. Afterwards, the audio processor 110 reads the value from the memory 140, calculates and performs dynamic correction to eliminate or reduce the nonlinear transmission sound energy transmitted from the electronic device 100 to the microphone 120, thereby reducing the echo and optimizing the product echo cancellation (Acoustic Echo Cancellation, AEC) effect.

[0104] Since each electronic device 100 in the production line can ensure the effect of echo cancellation through the dynamic correction method 200 of sound reception, even if the nonlinear sound transmission energy of one electronic device 100 is higher or even greater than the normal sound reception due to production distribution variation, dynamic correction can be performed according to the first airtight value curve D1 measured by itself. Therefore, each electronic device 100 can have a good sound reception performance.

[0105] In addition, in this embodiment, since the electronic device 100 itself does not need to add a speaker shock-absorbing structure, the membrane layer of the microphone 120 does not need to use waterproof and high sound-transmitting materials to reduce nonlinear sound energy transmission, which can effectively simplify the structure and achieve cost savings.

[0106] In summary, in the electronic system and the dynamic correction method of the sound reception of the present invention, the audio processor obtains the first airtight numerical curve according to the numerical difference between the first frequency response curve and the second frequency response curve to perform the first dynamic correction sound reception process, and the audio processor obtains the adjusted second frequency response curve by performing the first dynamic correction sound reception process. If the second frequency response curve is a curve that can reflect the nonlinear transmission of sound energy, since the adjusted second frequency response curve has a lower influence on the first frequency response curve, the influence of the sound reception effect caused by the nonlinear transmission of sound energy can be effectively reduced without requiring additional material costs.

[0107] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the appended claims.

Claims

1. A method for dynamic correction of sound reception, applicable to an electronic device, wherein the electronic device comprises an audio processor, a microphone connected to the audio processor by signal, and a sound receiving hole corresponding to the microphone, the method for dynamic correction of sound reception comprising: The audio processor performs a first dynamic correction sound collection process according to a first airtight numerical curve obtained by a numerical difference between the first frequency response curve and the second frequency response curve; as well as The audio processor obtains an adjusted second frequency response curve by executing the first dynamic correction sound collection process.

2. The dynamic correction method for sound reception as described in claim 1, wherein the first dynamic correction sound reception process includes that in at least one frequency segment where the decibel value in the first airtight numerical curve is a negative number, the audio processor reduces the decibel value of the second frequency response curve in the at least one frequency segment to obtain the adjusted second frequency response curve, and the decibel value of the adjusted second frequency response curve in the at least one frequency segment is less than or equal to the decibel value of the first frequency response curve in the corresponding at least one frequency segment.

3. The dynamic correction method for sound reception as claimed in claim 2, wherein the decibel value of the adjusted second frequency response curve in the at least one frequency segment is 0 to 15 decibels smaller than the decibel value of the first frequency response curve in the corresponding at least one frequency segment.

4. The dynamic correction method for sound reception as described in claim 2, wherein the at least one frequency segment includes multiple frequency segments, and the audio processor reduces the decibel value of the second frequency response curve in the frequency segment according to multiple differences between the first frequency response curve and the second frequency response curve in the frequency segment to obtain the adjusted second frequency response curve.

5. The dynamic correction method for sound reception as described in claim 2, wherein the at least one frequency segment includes multiple frequency segments, and the audio processor reduces the decibel value of the second frequency response curve in the frequency segment according to the maximum difference among multiple differences between the first frequency response curve and the second frequency response curve in the frequency segment to obtain the adjusted second frequency response curve.

6. The dynamic correction method for sound reception as described in claim 1, wherein when the sound receiving hole is kept unobstructed, the microphone receives the sound emitted by the first speaker to obtain the first frequency response curve; when the sound receiving hole is closed, the microphone receives the sound emitted by the first speaker to obtain the second frequency response curve.

7. The dynamic correction method for sound pickup as claimed in claim 6, wherein the first speaker is disposed in the electronic device.

8. The method for dynamic correction of sound pickup according to claim 6, further comprising: When the sound receiving hole is kept unobstructed, the microphone receives the sound emitted by the second speaker to obtain a third frequency response curve; When the sound receiving hole is closed, the microphone receives the sound emitted by the second speaker to obtain a fourth frequency response curve; The audio processor obtains a second airtight numerical curve according to the numerical difference between the third frequency response curve and the fourth frequency response curve to perform a second dynamic correction sound collection process; as well as The audio processor obtains an adjusted fourth frequency response curve by executing the second dynamic correction sound collection process.

9. The dynamic correction method for sound reception as described in claim 8, wherein the second dynamic correction sound reception process includes causing the audio processor to reduce the decibel value of the fourth frequency response curve in at least one frequency segment where the decibel value in the second airtight numerical curve is a negative number to obtain the adjusted fourth frequency response curve, and the decibel value of the adjusted fourth frequency response curve in the at least one frequency segment is less than or equal to the decibel value of the third frequency response curve in the corresponding at least one frequency segment.

10. The dynamic correction method for sound reception as claimed in claim 9, wherein in the second dynamic correction sound reception process, the decibel value of the adjusted fourth frequency response curve in the at least one frequency segment is 0 to 15 decibels smaller than the decibel value of the third frequency response curve in the corresponding at least one frequency segment.

11. The dynamic correction method for sound reception as described in claim 9, wherein the at least one frequency segment includes multiple frequency segments, and the audio processor reduces the decibel value of the fourth frequency response curve in the frequency segment according to multiple differences between the third frequency response curve and the fourth frequency response curve in the frequency segment to obtain the adjusted fourth frequency response curve.

12. The dynamic correction method for sound reception as described in claim 9, wherein the at least one frequency segment includes multiple frequency segments, and the audio processor reduces the decibel value of the fourth frequency response curve in the frequency segment according to the maximum difference among multiple differences between the third frequency response curve and the fourth frequency response curve in the frequency segment to obtain the adjusted fourth frequency response curve. 13 . The dynamic correction method for sound pickup as claimed in claim 8 , wherein one of the first speaker and the second speaker is located inside the electronic device, and the other is located outside the electronic device.

14. An electronic system comprising: Electronic device, including: Audio processor; a microphone, signal-connected to the audio processor; and The sound receiving hole corresponds to the microphone, wherein The audio processor obtains a first airtight numerical curve according to the numerical difference between the first frequency response curve and the second frequency response curve to perform a first dynamic correction sound collection process and obtain an adjusted second frequency response curve.

15. The electronic system of claim 14, further comprising: The first speaker, wherein the microphone receives the sound emitted by the first speaker when the sound receiving hole is unobstructed, and the first frequency response curve is obtained; and the microphone receives the sound emitted by the first speaker when the sound receiving hole is closed, and the second frequency response curve is obtained.

16. The electronic system as claimed in claim 14, wherein the audio processor reduces the decibel value of the second frequency response curve in at least one frequency segment where the decibel value in the first airtight numerical curve is a negative number, to obtain the adjusted second frequency response curve, wherein the decibel value of the adjusted second frequency response curve in the at least one frequency segment is less than or equal to the decibel value of the first frequency response curve in the corresponding at least one frequency segment. 17 . The electronic system of claim 16 , wherein the audio processor makes the decibel value of the adjusted second frequency response curve in the at least one frequency segment 0-15 decibels smaller than the decibel value of the first frequency response curve in the corresponding at least one frequency segment.

18. The electronic system of claim 15, further comprising: A second speaker, one of the first speaker and the second speaker is located inside the electronic device, and the other is located outside the electronic device, the microphone receives the sound emitted by the second speaker when the sound receiving hole remains unobstructed, so that the audio processor obtains a third frequency response curve, the microphone receives the sound emitted by the second speaker when the sound receiving hole is closed, so that the audio processor obtains a fourth frequency response curve, and the audio processor obtains a second airtight numerical curve based on the numerical difference between the third frequency response curve and the fourth frequency response curve, so as to perform a second dynamic correction sound collection process and obtain an adjusted fourth frequency response curve.

19. The electronic system of claim 18, wherein the audio processor reduces the decibel value of the fourth frequency response curve in at least one frequency segment where the decibel value in the second airtight numerical curve is a negative number to obtain the adjusted fourth frequency response curve, and the decibel value of the adjusted fourth frequency response curve in the at least one frequency segment is less than or equal to the decibel value of the third frequency response curve in the corresponding at least one frequency segment.

20. The electronic system of claim 19, wherein the audio processor makes the decibel value of the adjusted fourth frequency response curve in the at least one frequency segment 0-15 decibels smaller than the decibel value of the third frequency response curve in the corresponding at least one frequency segment.

21. The electronic system of claim 18, further comprising: The remote device is signal-connected to the audio processor, and the audio processor receives the sound signal from the remote device and transmits it to the first speaker or the second speaker in the electronic device for playing. 22 . The electronic system as claimed in claim 14 , wherein the electronic device comprises a memory electrically connected to the audio processor, and the memory is used to store the first airtight value curve.

Images