Comprehensive understanding of computer 3D speakers

Since the world's first sound card was installed on a computer, the speakers were accompanied by a computer. Although most of the audio systems on the computer can't achieve Hi-Fi (high-fidelity) effect, and there is a clear distance from the traditional audio in the family, the new style of computer speakers have sprung up, which makes people dazzle, below Let's introduce one of the wonderful ones - 3D speakers.

What is a 3D speaker?

The 3D speaker is the 2.1 speaker we often see now. It consists of a subwoofer and two small middle and high-pitched speakers. The small speakers are connected to the subwoofer like satellites, so they are called 2.1 satellite speakers. If it is a combination of four small and large, it is called 4.1 satellite speaker. Because this speaker works with the principle of phase conduction, it was also called phase conduction speaker. Now it is often called the subwoofer. There are many tricks. Such a speaker has appeared in the home audio system for a long time, and its representative is the American BOSE series. In the domestic computer market, the first PCS (SoundWorks) speaker was introduced in the domestic computer market. The world caused a lot of shock.


How 3D speakers work

To explain the working principle of 3D speakers, let's first look at the working principle of traditional speakers and the difference between 3D speakers and traditional speakers.
A speaker is a device that converts an electrical signal into an acoustic signal, which implements a re-reduction process of the sound. Although the speaker has undergone many years of development and development, great progress has been made. However, it is still difficult for a single speaker to restore the sound of 20 Hz to 20 kHz that can be heard by the human ear. Therefore, the frequency band is divided into two parts, high and low. The crossover is sent separately, the treble is restored by a specially designed tweeter, and the bass is restored with a woofer.
When the woofer is working, the sound waves in front of and behind the diaphragm are just opposite, and the low frequency has a strong diffraction ability. When the sound behind the speaker is turned to the front, it interferes with the front sound, and the speaker is placed in a closed box. The surface absorbs the sound waves behind and avoids interference, so the speakers we see are basically packed in boxes. After the speaker is loaded into the box, due to the limited volume of the box, the internal air will react to it when the speaker is working, so that the lower frequency limit of the speaker is raised, and at the same time, the sound in the box is completely absorbed without any use. Therefore, there is an inverted phase speaker that uses a specially designed long round tube to invert the internal sound and then re-send it to the outside of the box. The inverted sound specifically compensates for the lack of the lower limit of the speaker, so the sound can be extended downward.
Traditional speakers are mostly closed or inverted, and the cabinet is large. It has always been a problem to place on the side of the computer, and the cost is not enough. The 3D speakers just make up for the shortcomings of the traditional speakers in some places. Since the human ear is slow to sense the sound below 300 Hz, in the circuit part, a specially designed electronic frequency divider is used to separate the low frequency parts below 300 Hz in the left and right channels, and then sent to the same low frequency power amplifier. Zoom in, then output to a dedicated subwoofer, and the middle and high frequency parts are amplified by two power amplifiers and sent to the left and right speakers respectively. Since there is no need to restore the lower low frequency, the left and right speakers are The cabinet has been reduced a lot, which constitutes a large (lower speaker) two small (mid-high speaker) 3D speaker format.

3D speaker cabinet design

The 3D speaker's subwoofer can only reproduce the sound below 300Hz. In addition to the advantages of freely placing and adjusting the volume of the low frequency, a special box can also be used to enhance the low frequency reduction capability. A partition is placed inside the speaker, the box is divided into two parts, and the special low-frequency speaker is mounted on the inner partition, one of the boxes is designed to be closed, and the other is connected to the outside through a long tube. This open box allows for "Helmholtz resonance" to send sounds near the resonant frequency out of the box. This design is completely different from traditional speakers that avoid resonance. The use of such a speaker can restore a lower sound, and since the speaker is inside the box, a large amount of distortion high-order harmonics generated by the speaker during resonance are naturally absorbed, so that a purer low frequency can be obtained. The frequency and bandwidth of the control resonance must be achieved by calculating the space of the box and the length of the tube.
In addition to the single-opening box, the closed box can be designed as an open type. The resonant frequency is slightly different from the other side. The two resonant peaks thus formed can further widen the low frequency lower limit, and some subwoofers are used. The three-chamber design mixes the resonant sound in front of the woofer with the back sound for a third resonance, so the bandwidth extends more downwards, while the higher harmonics filter out more cleanly.
Because the middle and high frequency parts do not need to restore the low frequency sound, the power consumed by the speaker is reduced a lot. The full-range speaker with small caliber can be used, and the volume of the box is greatly reduced, which makes the placement more convenient, especially suitable for computer users. use. The middle and high frequency parts of the 3D speaker will be sent directly to a dedicated speaker unit to avoid the influence of the crossover on the sound, no matter the tone or the sound field is more accurate than the traditional speaker.
Due to the special design of the 3D speaker, the low frequency has a better extension, and the medium and high frequency connection is also excellent, and it is very convenient to place. But also note that if the medium and high frequency sounds are added to one or two speakers, the requirements for the speakers are much higher, both to achieve the effect of a dedicated tweeter and to connect 300Hz. Low frequency, speaker bandwidth, high frequency characteristics, power consumption and other performance should be quite good to take on this task, some speakers will separate the middle and high sound units, relatively speaking, the performance will be ideal. The crossover point in actual use is often designed at 150 Hz.

Improvement of the acoustic part of 3D speakers

Through the above test, we have already realized that the main disadvantage of 3D speakers is that they cannot achieve flat connection, which is caused by the limitation of speaker technology. On the one hand, the speaker cannot achieve a wide frequency band, on the other hand, the subwoofer The low frequency of the higher frequency band is usually not available, which is almost a congenital problem that 3D speakers cannot overcome. Usually, in addition to switching to a better full-band small speaker (can you do it?), increasing the volume of the mid-range and high-range speakers is also a viable solution (loss of aesthetics and convenience), it is not good. A few pieces of fiberglass can be added to the mid-high range speaker to slightly improve the low frequency characteristics.

Since the world's first sound card was installed on a computer, the speakers were accompanied by a computer. Although most of the audio systems on the computer can't achieve Hi-Fi (high-fidelity) effect, and there is a clear distance from the traditional audio in the family, the new style of computer speakers have sprung up, which makes people dazzle, below Let's introduce one of the wonderful ones - 3D speakers.

What is a 3D speaker?

The 3D speaker is the 2.1 speaker we often see now. It consists of a subwoofer and two small middle and high-pitched speakers. The small speakers are connected to the subwoofer like satellites, so they are called 2.1 satellite speakers. If it is a combination of four small and large, it is called 4.1 satellite speaker. Because this speaker works with the principle of phase conduction, it was also called phase conduction speaker. Now it is often called the subwoofer. There are many tricks. Such a speaker has appeared in the home audio system for a long time, and its representative is the American BOSE series. In the domestic computer market, the first PCS (SoundWorks) speaker was introduced in the domestic computer market. The world caused a lot of shock.


How 3D speakers work

To explain the working principle of 3D speakers, let's first look at the working principle of traditional speakers and the difference between 3D speakers and traditional speakers.
A speaker is a device that converts an electrical signal into an acoustic signal, which implements a re-reduction process of the sound. Although the speaker has undergone many years of development and development, great progress has been made. However, it is still difficult for a single speaker to restore the sound of 20 Hz to 20 kHz that can be heard by the human ear. Therefore, the frequency band is divided into two parts, high and low. The crossover is sent separately, the treble is restored by a specially designed tweeter, and the bass is restored with a woofer.
When the woofer is working, the sound waves in front of and behind the diaphragm are just opposite, and the low frequency has a strong diffraction ability. When the sound behind the speaker is turned to the front, it interferes with the front sound, and the speaker is placed in a closed box. The surface absorbs the sound waves behind and avoids interference, so the speakers we see are basically packed in boxes. After the speaker is loaded into the box, due to the limited volume of the box, the internal air will react to it when the speaker is working, so that the lower frequency limit of the speaker is raised, and at the same time, the sound in the box is completely absorbed without any use. Therefore, there is an inverted phase speaker that uses a specially designed long round tube to invert the internal sound and then re-send it to the outside of the box. The inverted sound specifically compensates for the lack of the lower limit of the speaker, so the sound can be extended downward.
Traditional speakers are mostly closed or inverted, and the cabinet is large. It has always been a problem to place on the side of the computer, and the cost is not enough. The 3D speakers just make up for the shortcomings of the traditional speakers in some places. Since the human ear is slow to sense the sound below 300 Hz, in the circuit part, a specially designed electronic frequency divider is used to separate the low frequency parts below 300 Hz in the left and right channels, and then sent to the same low frequency power amplifier. Zoom in, then output to a dedicated subwoofer, and the middle and high frequency parts are amplified by two power amplifiers and sent to the left and right speakers respectively. Since there is no need to restore the lower low frequency, the left and right speakers are The cabinet has been reduced a lot, which constitutes a large (lower speaker) two small (mid-high speaker) 3D speaker format.

3D speaker cabinet design

The 3D speaker's subwoofer can only reproduce the sound below 300Hz. In addition to the advantages of freely placing and adjusting the volume of the low frequency, a special box can also be used to enhance the low frequency reduction capability. A partition is placed inside the speaker, the box is divided into two parts, and the special low-frequency speaker is mounted on the inner partition, one of the boxes is designed to be closed, and the other is connected to the outside through a long tube. This open box allows for "Helmholtz resonance" to send sounds near the resonant frequency out of the box. This design is completely different from traditional speakers that avoid resonance. The use of such a speaker can restore a lower sound, and since the speaker is inside the box, a large amount of distortion high-order harmonics generated by the speaker during resonance are naturally absorbed, so that a purer low frequency can be obtained. The frequency and bandwidth of the control resonance must be achieved by calculating the space of the box and the length of the tube.
In addition to the single-opening box, the closed box can be designed as an open type. The resonant frequency is slightly different from the other side. The two resonant peaks thus formed can further widen the low frequency lower limit, and some subwoofers are used. The three-chamber design mixes the resonant sound in front of the woofer with the back sound for a third resonance, so the bandwidth extends more downwards, while the higher harmonics filter out more cleanly.
Because the middle and high frequency parts do not need to restore the low frequency sound, the power consumed by the speaker is reduced a lot. The full-range speaker with small caliber can be used, and the volume of the box is greatly reduced, which makes the placement more convenient, especially suitable for computer users. use. The middle and high frequency parts of the 3D speaker will be sent directly to a dedicated speaker unit to avoid the influence of the crossover on the sound, no matter the tone or the sound field is more accurate than the traditional speaker.
Due to the special design of the 3D speaker, the low frequency has a better extension, and the medium and high frequency connection is also excellent, and it is very convenient to place. But also note that if the medium and high frequency sounds are added to one or two speakers, the requirements for the speakers are much higher, both to achieve the effect of a dedicated tweeter and to connect 300Hz. Low frequency, speaker bandwidth, high frequency characteristics, power consumption and other performance should be quite good to take on this task, some speakers will separate the middle and high sound units, relatively speaking, the performance will be ideal. The crossover point in actual use is often designed at 150 Hz.

Improvement of the acoustic part of 3D speakers

Through the above test, we have already realized that the main disadvantage of 3D speakers is that they cannot achieve flat connection, which is caused by the limitation of speaker technology. On the one hand, the speaker cannot achieve a wide frequency band, on the other hand, the subwoofer The low frequency of the higher frequency band is usually not available, which is almost a congenital problem that 3D speakers cannot overcome. Usually, in addition to switching to a better full-band small speaker (can you do it?), increasing the volume of the mid-range and high-range speakers is also a viable solution (loss of aesthetics and convenience), it is not good. A few pieces of fiberglass can be added to the mid-high range speaker to slightly improve the low frequency characteristics.

Since the world's first sound card was installed on a computer, the speakers were accompanied by a computer. Although most of the audio systems on the computer can't achieve Hi-Fi (high-fidelity) effect, and there is a clear distance from the traditional audio in the family, the new style of computer speakers have sprung up, which makes people dazzle, below Let's introduce one of the wonderful ones - 3D speakers.

What is a 3D speaker?

The 3D speaker is the 2.1 speaker we often see now. It consists of a subwoofer and two small middle and high-pitched speakers. The small speakers are connected to the subwoofer like satellites, so they are called 2.1 satellite speakers. If it is a combination of four small and large, it is called 4.1 satellite speaker. Because this speaker works with the principle of phase conduction, it was also called phase conduction speaker. Now it is often called the subwoofer. There are many tricks. Such a speaker has appeared in the home audio system for a long time, and its representative is the American BOSE series. In the domestic computer market, the first PCS (SoundWorks) speaker was introduced in the domestic computer market. The world caused a lot of shock.


How 3D speakers work

To explain the working principle of 3D speakers, let's first look at the working principle of traditional speakers and the difference between 3D speakers and traditional speakers.
A speaker is a device that converts an electrical signal into an acoustic signal, which implements a re-reduction process of the sound. Although the speaker has undergone many years of development and development, great progress has been made. However, it is still difficult for a single speaker to restore the sound of 20 Hz to 20 kHz that can be heard by the human ear. Therefore, the frequency band is divided into two parts, high and low. The crossover is sent separately, the treble is restored by a specially designed tweeter, and the bass is restored with a woofer.
When the woofer is working, the sound waves in front of and behind the diaphragm are just opposite, and the low frequency has a strong diffraction ability. When the sound behind the speaker is turned to the front, it interferes with the front sound, and the speaker is placed in a closed box. The surface absorbs the sound waves behind and avoids interference, so the speakers we see are basically packed in boxes. After the speaker is loaded into the box, due to the limited volume of the box, the internal air will react to it when the speaker is working, so that the lower frequency limit of the speaker is raised, and at the same time, the sound in the box is completely absorbed without any use. Therefore, there is an inverted phase speaker that uses a specially designed long round tube to invert the internal sound and then re-send it to the outside of the box. The inverted sound specifically compensates for the lack of the lower limit of the speaker, so the sound can be extended downward.
Traditional speakers are mostly closed or inverted, and the cabinet is large. It has always been a problem to place on the side of the computer, and the cost is not enough. The 3D speakers just make up for the shortcomings of the traditional speakers in some places. Since the human ear is slow to sense the sound below 300 Hz, in the circuit part, a specially designed electronic frequency divider is used to separate the low frequency parts below 300 Hz in the left and right channels, and then sent to the same low frequency power amplifier. Zoom in, then output to a dedicated subwoofer, and the middle and high frequency parts are amplified by two power amplifiers and sent to the left and right speakers respectively. Since there is no need to restore the lower low frequency, the left and right speakers are The cabinet has been reduced a lot, which constitutes a large (lower speaker) two small (mid-high speaker) 3D speaker format.

3D speaker cabinet design

The 3D speaker's subwoofer can only reproduce the sound below 300Hz. In addition to the advantages of freely placing and adjusting the volume of the low frequency, a special box can also be used to enhance the low frequency reduction capability. A partition is placed inside the speaker, the box is divided into two parts, and the special low-frequency speaker is mounted on the inner partition, one of the boxes is designed to be closed, and the other is connected to the outside through a long tube. This open box allows for "Helmholtz resonance" to send sounds near the resonant frequency out of the box. This design is completely different from traditional speakers that avoid resonance. The use of such a speaker can restore a lower sound, and since the speaker is inside the box, a large amount of distortion high-order harmonics generated by the speaker during resonance are naturally absorbed, so that a purer low frequency can be obtained. The frequency and bandwidth of the control resonance must be achieved by calculating the space of the box and the length of the tube.
In addition to the single-opening box, the closed box can be designed as an open type. The resonant frequency is slightly different from the other side. The two resonant peaks thus formed can further widen the low frequency lower limit, and some subwoofers are used. The three-chamber design mixes the resonant sound in front of the woofer with the back sound for a third resonance, so the bandwidth extends more downwards, while the higher harmonics filter out more cleanly.
Because the middle and high frequency parts do not need to restore the low frequency sound, the power consumed by the speaker is reduced a lot. The full-range speaker with small caliber can be used, and the volume of the box is greatly reduced, which makes the placement more convenient, especially suitable for computer users. use. The middle and high frequency parts of the 3D speaker will be sent directly to a dedicated speaker unit to avoid the influence of the crossover on the sound, no matter the tone or the sound field is more accurate than the traditional speaker.
Due to the special design of the 3D speaker, the low frequency has a better extension, and the medium and high frequency connection is also excellent, and it is very convenient to place. But also note that if the medium and high frequency sounds are added to one or two speakers, the requirements for the speakers are much higher, both to achieve the effect of a dedicated tweeter and to connect 300Hz. Low frequency, speaker bandwidth, high frequency characteristics, power consumption and other performance should be quite good to take on this task, some speakers will separate the middle and high sound units, relatively speaking, the performance will be ideal. The crossover point in actual use is often designed at 150 Hz.

Improvement of the acoustic part of 3D speakers

Through the above test, we have already realized that the main disadvantage of 3D speakers is that they cannot achieve flat connection, which is caused by the limitation of speaker technology. On the one hand, the speaker cannot achieve a wide frequency band, on the other hand, the subwoofer The low frequency of the higher frequency band is usually not available, which is almost a congenital problem that 3D speakers cannot overcome. Usually, in addition to switching to a better full-band small speaker (can you do it?), increasing the volume of the mid-range and high-range speakers is also a viable solution (loss of aesthetics and convenience), it is not good. A few pieces of fiberglass can be added to the mid-high range speaker to slightly improve the low frequency characteristics.


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