TW201918079A - Sound effect system - Google Patents

Abstract

A sound effect system includes a headphone including an earmuff body and speaker units. The headphone body has an inner surface which is a curved surface. The speaker units is disposed at different locations of the inner surface, and two speaker units in the speaker units are next to each other, and the two speakers are connected to each other, and there is resistance between the two speaker units. When a first speaker unit receives a first channel audio signal, the first channel audio signal is divided into a voltage division audio signal through the resistance of the speaker units, and transmits the voltage division audio signal to a second speaker unit which is next to the first speaker unit.

Description

   Sound system   

The present disclosure relates to a sound effect system, and more particularly to a sound effect system of a headset.

The advent of headphones has changed the way people listen to music. In order to achieve the purpose that the earphones can be carried around, there is usually only one speaker unit inside the earphones. Therefore, it is difficult for the earphones to emit a stereoscopic sound. In order to improve this problem, multi-channel headphones with multiple speaker units were invented. Compared to headphones with only one speaker unit, multi-channel headphones with multiple speaker units have a more three-dimensional sound. .

However, the multiple speaker units of the conventional multi-channel headset are all located on the same plane, so the user hears that the sound heard by the multi-channel headset is slightly in the center, so that the sound field and positioning of the sound will be limited.

An embodiment of the present disclosure discloses a sound effect system including earphones. The earphones include an ear cup body and a speaker unit. The ear cup has an inner surface, and the inner surface is a curved surface. The speaker single system is arranged at different positions on the inner surface, and two adjacent speaker units in the speaker unit are connected to each other with resistance between them. When the first speaker unit in the speaker unit receives the first channel audio, the first channel audio generates a divided voltage through the resistance voltage division between the speaker units and transmits it to the speaker unit adjacent to the first speaker unit. Second speaker unit.

In summary, the sound effect system disclosed in this disclosure file is provided by a plurality of speaker units at different positions on the inner surface of the curved surface, and two adjacent speaker unit systems in the speaker unit are connected to each other with Resistance, so that the sound output by the sound effect system will have a diffuse effect, allowing the user to sound more natural through the sound effect system; in addition, the sound effect system can simulate the effect of sound distance and sound direction; moreover, when the source audio When there are different kinds of instrument sounds, each instrument sound can be separated to improve the separation between the instruments.

100‧‧‧ sound system

110‧‧‧Headphone

111‧‧‧ear cap body

111a‧‧‧Inner surface

112‧‧‧Speaker Circuit

112a ~ 112i‧‧‧First speaker unit ~ Ninth speaker unit

113‧‧‧ equivalent circuit

114‧‧‧Speaker Circuit

120‧‧‧ Audio Processor

L1‧‧‧First Path

L2‧‧‧Second Path

MSR1, MSR2, MSR3, MSR4

P1‧‧‧First position

P2‧‧‧Second position

R‧‧‧ resistance

S0‧‧‧Source Audio

S1 ~ S9‧‧‧ Channel 1 Audio ~ Channel 9 Audio

S11‧‧‧ divided audio

SR, SR1, SR2, SR3, SR4

SW‧‧‧Switching element

V1 ~ V9‧‧‧First voltage ~ Ninth voltage

In order to make the above and other objects, features, advantages, and embodiments of the present disclosure more comprehensible, the description of the drawings is as follows: FIG. 1A is a schematic diagram of a sound effect system according to an embodiment of the present disclosure. .

FIG. 1B is a schematic diagram of an ear cup body and a speaker circuit according to an embodiment of the present disclosure.

FIG. 2A is a schematic diagram of a speaker circuit according to an embodiment of the present disclosure.

FIG. 2B is a schematic diagram of an equivalent circuit of the speaker circuit shown in FIG. 2A.

Fig. 2C is a schematic diagram of a sound emitting area corresponding to the speaker circuit shown in Fig. 2A.

FIG. 3A is a schematic diagram of the speaker circuit when the orientation of the analog sound is the upper right corner and the analog sound distance is a long distance.

FIG. 3B is a schematic diagram of a sound emitting area corresponding to the speaker circuit shown in FIG. 3A.

FIG. 4A is a schematic diagram of the speaker circuit when the orientation of the analog sound is the upper right corner and the analog sound distance is the middle sound distance.

FIG. 4B is a schematic diagram of a sound emitting area corresponding to the speaker circuit shown in FIG. 4A.

FIG. 5A is a schematic diagram of the speaker circuit when the analog sound distance is close.

FIG. 5B is a schematic diagram of a sound emitting area corresponding to the speaker circuit shown in FIG. 5A.

FIG. 6A is a schematic diagram of a speaker unit disposed at different positions on an inner surface according to an embodiment of the present disclosure.

FIG. 6B is a schematic diagram of a sound emitting area corresponding to the speaker circuit shown in FIG. 6A.

FIG. 7A is a functional block diagram of an audio processor according to an embodiment of the disclosure.

FIG. 7B is a schematic diagram illustrating that the speaker unit in the speaker circuit shown in one embodiment of the present disclosure is driven by the channel audio converted by the audio processor shown in FIG. 7A.

FIG. 8A is a functional block diagram of an audio processor according to an embodiment of the disclosure.

FIG. 8B is a schematic diagram illustrating that the speaker unit in the speaker circuit shown in one embodiment of the present disclosure is driven by the channel audio converted by the audio processor shown in FIG. 8A.

FIG. 9A is a functional block diagram of an audio processor according to an embodiment of the disclosure.

FIG. 9B is a schematic diagram illustrating that the speaker unit in the speaker circuit shown in one embodiment of the present disclosure is driven by the channel audio converted by the audio processor shown in FIG. 9A.

The following is a detailed description with examples and the attached drawings to better understand the aspect of the case, but the examples provided are not intended to limit the scope covered by the case, and the description of the structural operation is not used to limit it In the order of execution, any structure that reassembles the components and produces a device with equal efficacy is within the scope of this case.

Please refer to Figures 1A and 1B. FIG. 1A is a schematic diagram of a sound effect system 100 according to an embodiment of the disclosure. FIG. 1B is a schematic diagram of the ear cup body 111 and the speaker circuit 112 according to an embodiment of the present disclosure.

The audio system 100 includes an earphone 110 and an audio processor 120, and the earphone 110 is electrically connected to the audio processor 120. In one embodiment, the audio processor 120 may be built in the earphone 110 and electrically connected to the earphone 110. In another embodiment, the audio processor 120 may be an external component and electrically connected to the earphone 110.

The earphone 110 includes an ear cup body 111 and nine speaker units (namely, a first speaker unit 112a to a ninth speaker unit 112i), of which nine speaker units form a speaker circuit 112. It should be noted that the number of speaker units is only an example, and is not limited thereto.

The ear cup body 111 has an inner surface 111a, and the inner surface 111a is a curved surface, for example, hemispherical.

The first to ninth speaker units 112a to 112i are arranged at different positions on the inner surface 111a of the curved surface and are arranged in a 3 × 3 array. In addition, since the first speaker unit 112a to the ninth speaker unit 112i are located on a curved surface rather than on the same plane, the sound emitted by the first speaker unit 112a to the ninth speaker unit 112i will be collected from different directions to use The user's ears, the user can feel the sound in all directions.

Adjacent two speaker units of the first speaker unit 112a to the ninth speaker unit 112i are connected to each other and have a resistance R therebetween, wherein the resistance values of the resistance R may be the same or different. In the preferred embodiment, the resistance values of the resistors R are all the same.

In one embodiment, a resistance element is connected between two adjacent speaker units in the first speaker unit 112a to a ninth speaker unit 112i, and the resistance element is a resistance R between two adjacent speaker units.

In an embodiment, the first speaker unit 112a to the ninth speaker unit 112i are a plurality of disparate blocks on the thin film piezoelectric material, and the disparate blocks have built-in resistances between them. The resistance R between the two speaker units.

First, it is explained that the sound output from the sound effect system 100 has a diffusion effect, so that the sound that the user sounds through the sound effect system 100 is more natural.

Please refer to FIG. 2A and FIG. 2B. FIG. 2A is a schematic diagram of the speaker circuit 112 according to an embodiment of the present disclosure. FIG. 2B is an equivalent circuit 113 of the speaker circuit 112 shown in FIG. 2A. schematic diagram.

As shown in FIG. 2B, the equivalent circuit 113 converts the speaker circuit 112, and the purpose is to calculate the voltage of the positive electrode of the first speaker unit 112a to the ninth speaker unit 112i. It is assumed that the voltage corresponding to the first channel audio S1 is 5V, and for the sake of calculation simplicity, it is assumed that the internal resistance of the first speaker unit 112a to the ninth speaker unit 112i is the same as the resistance value of the resistor R. In actual application, the first The internal resistance values of the speaker units 112a to the ninth speaker unit 112i may be different from the resistance value of the resistor R.

In the schematic diagram of FIG. 2B, for simplicity of explanation, only a low-resistance path is schematically shown. In fact, the above-mentioned low-resistance paths are also connected in parallel with other paths having higher resistance. In the schematic diagram of FIG. 2B, only the main paths are shown, and other paths with higher resistance are ignored. Taking the second speaker unit 112b as an example, in the schematic diagram of FIG. 2B, only the first path L1 including a resistor R is shown schematically, but in fact, the first path L1 is also connected in parallel with two resistors in series. The second path L2 of R, wherein the first path L1 and the second path L2 are as shown in FIG. 2A.

Regarding the first voltage V1 of the positive pole of the first speaker unit 112a, the positive pole of the first speaker unit 112a receives the first channel audio S1, and the negative pole of the first speaker unit 112a is connected to the ground, so the first channel audio S1 The internal resistance of the first speaker unit 112a and the ground terminal form a loop. The first voltage V1 of the positive electrode of the first speaker unit 112a can be calculated as 5V.

Regarding the second voltage V2 of the anode of the second speaker unit 112b, the anode of the second speaker unit 112b is connected in series with a resistor R, and the first channel audio S1 is input to one end of the resistor R, and the second speaker unit 112b Is connected to the ground terminal, so the first channel audio S1, resistor R, the internal resistance of the second speaker unit 112b and the ground terminal form a loop, and the second voltage V2 of the positive terminal of the second speaker unit 112b can be calculated It is 2.5V. In detail, the first channel audio S1 can pass through the resistance R between the second speaker unit 112b and the first speaker unit 112a and the internal resistance of the second speaker unit 112b, and the divided voltage generates the divided voltage audio S11, which corresponds to The voltage-divided audio S11 with a voltage of 2.5v is transmitted to the positive electrode of the second speaker unit 112b, so that the second voltage V2 of the positive electrode of the second speaker unit 112b is 2.5V.

About the calculation methods of the third voltage V3, the fourth voltage V4, the fifth voltage V5, the sixth voltage V6, the seventh voltage V7, the eighth voltage V8, and the ninth voltage V9, and the calculation of the first voltage V1 and the second voltage V2 The method is the same, so I won't repeat it here. After calculation, the third voltage V3 is 1.67V, the fourth voltage V4 is 2.5V, the fifth voltage V5 is 1.67V, the sixth voltage V6 is 1.25V, the seventh voltage V7 is 1.67V, and the eighth voltage V8 is 1.25 V, the ninth voltage V9 is 1V.

In addition, since the voltage of the positive pole of each speaker unit is positively related to the sound level emitted by each speaker unit, that is, the higher the voltage of the positive pole of each speaker unit, the more the sound from each speaker unit is On the contrary, the smaller the voltage of the positive electrode of each speaker unit, the smaller the sound emitted by each speaker unit.

Please refer to FIG. 2C, which is a schematic diagram corresponding to the sound emission region SR of the speaker circuit 112 shown in FIG. 2A.

In each of the sound emitting areas of the first speaker unit 112a to the ninth speaker unit 112i in FIG. 2C, a sounding area SR in the form of a nine-grid lattice is formed, and a triangular wave is used to represent the waveform of the sound wave in each sounding area. Big means louder.

Because the first voltage V1 to the ninth voltage V9 have different voltage levels, based on the positive correlation between the voltage system received by each speaker unit and the size of the sound emitted by each speaker unit, each sounding area can appear as the first The sounding area SR shown in FIG. 2C.

Therefore, when only the positive pole of the first speaker unit 112a receives the input of the first channel audio S1 with a voltage of V, it passes through the resistance R between the adjacent speaker units, the internal resistance of the speaker unit, and the divided voltage. Theorem: The second speaker unit 112b to the ninth speaker unit 112i are all affected by the first channel audio S1 and receive the corresponding channel audio voltage to make a sound. That is, when one of the first speaker unit 112a to the ninth speaker unit 112i receives the channel audio, the remaining speaker units are affected by the channel audio and receive the corresponding channel audio voltage, thereby The sound is emitted, so the sound output from the sound effect system 100 will have a diffusion effect, so that the sound that the user sounds through the sound effect system 100 is more natural.

Next, the effect that the sound effect system 100 can simulate sound distance is explained.

Please refer to Figures 3A and 3B. FIG. 3A is a schematic diagram of the speaker circuit 112 when the orientation of the analog sound is the upper right corner and the distance of the analog sound is a long distance. FIG. 3B is a schematic diagram corresponding to the sound emission region SR1 of the speaker circuit 112 shown in FIG. 3A.

As shown in FIG. 3A, if the orientation of the sound is the upper right corner and the analog sound distance is a long distance, the first speaker unit 112a receives the first channel audio S1. As shown in FIG. 3B, the main sound emission region MSR1 in the sound emission region SR1 will be formed by the first speaker unit 112a.

Therefore, the user can feel that the direction of the simulated sound is the upper right corner, and the distance of the simulated sound is a long distance.

Please refer to Figure 4A and Figure 4B. FIG. 4A is a schematic diagram of the speaker circuit 112 when the orientation of the analog sound is the upper right corner and the distance of the analog sound is a middle distance. FIG. 4B is a schematic diagram corresponding to the sound emission region SR2 of the speaker circuit 112 shown in FIG. 4A.

As shown in FIG. 4A, if the orientation of the sound is the upper right corner and the distance of the analog sound is a middle distance, the first speaker unit 112a receives the first channel audio S1, and the second speaker unit 112b receives the second channel audio S2. The fourth speaker unit 112d receives the fourth channel audio S4 and the fifth speaker unit 112e receives the fifth channel audio S5. As shown in FIG. 4B, the main sound emission region MSR2 in the sound emission region SR2 will be formed by the first speaker unit 112a, the second speaker unit 112b, the fourth speaker unit 112d, and the fifth speaker unit 112e.

Therefore, the user can feel that the simulated sound direction is the upper right corner, and the simulated sound distance is the middle distance. In other words, compared to the simulated sound distance in FIG. 3B, which is a long distance, the simulated sound distance corresponding to FIG. 4B is relatively Closer.

Please refer to Figures 5A and 5B. FIG. 5A is a schematic diagram of the speaker circuit 112 when the analog sound distance is close. FIG. 5B is a schematic diagram corresponding to the sound emission region SR3 of the speaker circuit 112 shown in FIG. 5A.

As shown in FIG. 5A, if the analog sound distance is close, the first speaker unit 112a to the ninth speaker unit 112i receive the first channel audio S1 to the ninth channel audio S9, respectively. As shown in FIG. 5B, the main sound emission region MSR3 in the sound emission region SR3 will be formed by the first speaker unit 112a to the ninth speaker unit 112i.

Therefore, the user can feel that the simulated sound distance is close. In other words, compared to the long distance and middle distance of the simulated sound distance in FIGS. 3B and 4B, the simulated sound distance corresponding to FIG. 5B is relatively the most. Close.

In this way, the area size of the main sounding area can be used to adjust the distance of the simulated sound output by the sound system 100, that is, the larger the size of the area of the main sounding area, the closer the distance of the analog sound; The smaller the area size, the farther the analog sound is.

Next, the effect that the sound effect system 100 can simulate the sound orientation will be described.

Please refer to Figures 6A and 6B. FIG. 6A is a schematic diagram of different positions of the first speaker unit 112a to the ninth speaker unit 112i according to one embodiment of the present disclosure on the inner surface 111a. FIG. 6B is a schematic diagram corresponding to the sound emission region SR4 of the speaker circuit 112 shown in FIG. 6A.

As shown in FIG. 6A, the first speaker unit 112a to the ninth speaker unit 112i are disposed on the inner surface 111a in an array manner, for example, the first speaker unit 112a is disposed at a first position on the inner surface 111a. P1, the third speaker unit 112c is disposed at the second position P2 on the inner surface 111a, and the second position P2 is different from the first position P1.

Further, when the first speaker unit 112a receives the first channel audio S1, the first channel audio S1 is played from the first position P1, and when the third speaker unit 112c receives the third channel audio S3, the second channel P1 is played. Play third channel audio S3. As shown in FIG. 6B, the main sounding region MSR4 in the sounding region SR4 will be formed by the first speaker unit 112a in the upper right corner and the third speaker unit 112c in the lower right corner.

Therefore, the user can feel that the simulated sound directions are the upper right corner and the lower right corner, respectively.

In an embodiment, the above-mentioned first channel audio S1 may correspond to the first sound type in the source audio, and the third channel audio S3 corresponds to the second sound type in the source audio. The first sound type is different from the second sound type. The first sound type and the second sound type may be generated by different instruments or have different bands, respectively. For example, the source audio may be a symphony formed by the performance of a plurality of instruments, wherein the first sound type may be a piano sound and the second sound type may be a drum sound.

Thereby, the user can feel that the orientation of the piano sound is the upper right corner and the orientation of the drum sound is the lower right corner, thereby improving the separation between the instruments.

Please refer to Figures 7A and 7B. FIG. 7A is a functional block diagram of the audio processor 120 according to an embodiment of the present disclosure. FIG. 7B is a first channel converted from the first speaker unit 112a to the ninth speaker unit 112i in the speaker circuit 112 according to an embodiment of the present disclosure by the audio processor 120 shown in FIG. 7A. Schematic diagram of audio S1 to ninth channel audio S9 driver.

In this embodiment, the number of speaker units in the speaker circuit 112 is nine, that is, the first speaker unit 112a to the ninth speaker unit 112i, and the audio processor 120 is configured to convert nine channel audios according to the source audio S0. That is, the first channel audio S1 to the ninth channel audio S9, and the first channel audio S1 to the ninth channel audio S9 can be used to directly drive the first speaker unit 112a to the ninth speaker unit 112i, respectively. One speaker unit 112a to the ninth speaker unit 112i will emit corresponding sounds.

It should be noted that the number of the aforementioned speaker units and the number of channel audio are merely examples, and are not limited thereto. Further, the relationship between the number of speaker units and the number of channel audio can be defined as: the number of speaker units is N, and the audio processor 120 is configured to convert a total of N channel audio according to the source audio S0, where N is two The positive integer above.

As a result, since each speaker unit can be driven independently, the sound effect system 100 can simulate sounds with stereoscopic effects in various directions.

Please refer to Figures 8A and 8B. FIG. 8A is a functional block diagram of the audio processor 120 according to an embodiment of the present disclosure. FIG. 8B is a second channel converted from the first speaker unit 112a to the ninth speaker unit 112i in the speaker circuit 112 according to an embodiment of the present disclosure by the audio processor 120 shown in FIG. 8A. Audio S2, the fourth channel audio S4 to the sixth channel audio S6 and the eighth channel audio S8 drive schematic diagram.

In this embodiment, the number of speaker units in the speaker circuit 112 is nine, that is, the first speaker unit 112a to the ninth speaker unit 112i, and the audio processor 120 is configured to convert five channel audios according to the source audio S0. , That is, second channel audio S2, fourth channel audio S4 to sixth channel audio S6, and eighth channel audio S8, and second channel audio S2, fourth channel audio S4 to sixth channel audio S6, and eighth channel audio S8 It can be used to directly drive the second speaker unit 112b, the fourth speaker unit 112d to the sixth speaker unit 112f, and the eighth speaker unit 112h, respectively. Therefore, the driven second speaker unit 112b and the fourth speaker unit 112d are driven. The sixth through eighth speaker units 112f and 112h will emit corresponding sounds.

In addition, the second channel audio S2, the fourth channel audio S4 to the sixth channel audio S6, and the eighth channel audio S8 generate a plurality of divided audio signals through a resistance voltage division between two adjacent speaker units. These divided audio signals Further driving the remaining speaker units, that is, the first speaker unit 112a, the third speaker unit 112c, the seventh speaker unit 112g, and the ninth speaker unit 112i, therefore, the driven first speaker unit 112a, the first The three speaker units 112c, the seventh speaker unit 112g, and the ninth speaker unit 112i will emit corresponding sounds.

It should be noted that the number of the aforementioned speaker units and the number of channel audio are merely examples, and are not limited thereto. Further, the relationship between the number of speaker units and the number of channel audio can be defined as: the number of speaker units is N, and the audio processor 120 is configured to convert a total of K channel audio and K channel audio according to the source audio S0 It is used to directly drive K speaker units, K channel audio, and a plurality of divided voltage audios generated by the resistance voltage division between the speaker units, where K <N, N and K are positive integers of two or more.

Therefore, since the channel audio can generate a plurality of divided voltage audios by the resistance voltage division between two adjacent speaker units, the number of channel audio can be smaller than that of the speaker units. That is to say, only a few channel audios are needed to drive all the speaker units, so that the sound effect system 100 can simulate stereo sound.

Please refer to FIG. 9A and FIG. 9B again. FIG. 9A is a functional block diagram of the audio processor 120 according to an embodiment of the present disclosure. FIG. 9B is a first channel converted from the first speaker unit 112a to the ninth speaker unit 112i in the speaker circuit 114 shown in FIG. 9A according to an embodiment of the present disclosure by the audio processor 120 shown in FIG. 9A. Schematic diagram of audio S1 to ninth channel audio S9 driver.

The configuration of the first speaker unit 112a to the ninth speaker unit 112i shown in FIG. 9B and the first speaker unit 112a to the ninth speaker unit 112i shown in FIG. 7B are substantially the same, and the main difference lies in that A switching element SW is provided between the first speaker unit 112a to the ninth speaker unit 112i shown in FIG. 9B and the audio processor 120.

When the audio processor 120 converts the source audio S0 to generate one of the first channel audio S1 to the ninth channel audio S9, the corresponding switching element SW will be turned on, and the speaker unit connected to the corresponding switching element SW will be On the contrary, the corresponding switching element SW will not be turned on, and the speaker unit connected to the corresponding switching element SW will not be driven.

That is, the switching element SW is not turned on under a preset condition, and is only turned on when the channel audio is input to the switching element W.

For example, when the audio processor 120 generates only the first channel audio S1 and does not generate the second channel audio S2 to the ninth channel audio S9, the switching element SW connected to the first speaker unit 112a will be turned on, so The first speaker unit 112a will be driven; the switching elements SW connected to the second speaker unit 112b to the ninth speaker unit 112i will not be turned on, so the second speaker unit 112b to the ninth speaker unit 112i cannot be turned on. driven. In this way, the current from the second speaker unit 112b to the ninth speaker unit 112i can be prevented from backlashing to the audio processor 120 (or other pre-stage circuits), thereby disturbing the source of the first channel audio S1, thereby preventing the signal. The purpose of the source being disturbed.

In one embodiment, the switching element SW may be implemented by a metal oxide semiconductor field effect transistor. It should be noted that the number and type of the switching elements SW are merely examples, and are not limited thereto.

In summary, the sound effect system disclosed in this disclosure file is provided by a plurality of speaker units at different positions on the inner surface of the curved surface, and two adjacent speaker unit systems in the speaker unit are connected to each other with Resistance, so that the sound output by the sound effect system will have a diffuse effect, allowing the user to sound more natural through the sound effect system; in addition, the sound effect system can simulate the effect of sound distance and sound direction; moreover, when the source audio When there are different kinds of instrument sounds, each instrument sound can be separated to improve the separation between the instruments.

Although this case has been disclosed as above with examples, it is not intended to limit this case. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of this case. Therefore, the protection of this case The scope shall be determined by the scope of the attached patent application.

Claims (10)

    A sound effect system includes: an earphone including: an ear cup body having an inner surface which is a curved surface; and a plurality of speaker units arranged at different positions on the inner surface. Two adjacent single speaker systems in the body are connected to each other with a resistance between them. When a first speaker unit among the speaker units receives a first channel audio, the first channel audio passes through The resistance partial voltage between the speaker units generates a divided voltage audio and transmits it to a second speaker unit of the speaker units adjacent to the first speaker unit.         The sound effect system according to claim 1, wherein when the first speaker unit receives the first channel audio, the second speaker unit simultaneously receives a second channel audio, and the first speaker unit and the The second speaker unit forms a main sounding area, and an area size of the main sounding area is used to adjust an analog sound distance output by the sound effect system.         The sound effect system according to claim 1, wherein the speaker units include a third speaker unit, the first speaker unit is disposed at a first position on the inner surface, and the third speaker unit is disposed at A second position on the inner surface, the second position being different from the first position, when the first speaker unit receives the first channel audio, playing the first channel audio from the first position, when When the third speaker unit receives a third channel audio, the third speaker plays the third channel audio from the second position.         The sound effect system according to claim 3, wherein the first channel audio corresponds to a first sound type among source audio, and the third channel audio corresponds to a second sound type among source audio, and the first sound type Different from the second sound type, the first sound type and the second sound type are generated by different instruments or have different bands, respectively.         The audio system according to claim 1, further comprising: an audio processor connected to the speaker units. The audio processor is configured to receive a source audio, and the audio processor converts a plurality of channel audios according to the source audio. The channel audio is used to drive the speaker units.         The audio system according to claim 5, wherein the earphone includes a total of N of the speaker units, and the audio processor is configured to convert a total of N of the channel audios according to the source audio, where N is a positive integer of two or more.         The audio system according to claim 5, wherein the earphone includes a total of N speaker units, the audio processor is configured to convert a total of K channel audios according to the source audio, and the K channel audios are used to directly Drive the speaker units of K speaker units, K channel audios and generate a plurality of partial voltage audios through the resistor partial voltage between the speaker units, where K <N, N and K are more than two Positive integer.         The audio effect system as described in claim 5, further comprising: a plurality of switching elements connected between the audio processor and each of the speaker units, and when the audio processor generates the channel audio, the corresponding The switching element is turned on.         The sound effect system according to claim 1, wherein a resistance element is connected between two adjacent speaker units of the speaker units.         The sound effect system according to claim 1, wherein the speaker units are a plurality of disparate blocks on a thin-film piezoelectric material, and there is a built-in resistor between the disparate blocks. This is the resistance between two adjacent speaker units.