TWM589932U - One-to-many wireless loudspeaker device - Google Patents

Abstract

A one-to-many wireless speaker box device is an integrally formed device. The one-to-many wireless speaker box device includes a housing, one or more film elements, at least two speaker units, and at least one circuit board body. The circuit board system has a wireless transmission unit, a digital audio signal processing unit and at least two Class D amplifier units, and the pair of multiple wireless speaker speaker devices can generate at least two channels or multiple channels, and each A Class D amplifier unit connects the left and right channels in parallel and connects more than one speaker unit with a single channel output, and magnifies the output audio to drive the speaker units corresponding to different channel channels to operate, so it can Effectively improve the problem that the greater the power of the class D power amplifier, the greater the magnification, but the greater the signal distortion ratio will occur. In addition, it can also achieve the effect of doubling the hearing efficiency; in addition, one of the cases is for multiple wireless speakers The speaker device can not only play music with a single device, but also can connect two or more one-to-many wireless speaker speaker devices to form a team connection to play/receive audio signals, resulting in the effect of playing music and singing karaoke.

Description

One-to-many wireless speaker speaker device

This creation is about a one-to-many wireless speaker box device, especially a kind of multi-wireless speaker box device that can improve the signal distortion ratio of Class D power amplifier.

Power amplifiers play a very important role in the design of integrated circuits. They are widely used in public broadcast transmitters and receivers, stereo equipment, microcomputers and other electronic equipment. The function of the power amplifier is to increase the signal energy to drive the single load of the speaker or the circuit of the next stage.

Power amplifiers are classified according to their applications, mainly including Class A, Class B, Class AB, Class C, and Class D. Class D power amplifiers have high power conversion efficiency (more than 90%) and low cost due to their high power conversion efficiency. The advantages are widely used, however, for products with higher signal distortion ratio and signal-to-noise ratio requirements, the performance of class D power amplifiers is not as good as that of class AB power amplifiers.

Especially when the input signal is large to a certain degree (usually about half of the reference level), the total harmonic distortion plus noise (THD+N) of the class D power amplifier will suddenly increase, and the total harmonic The wave-to-noise ratio is the ratio of the sum of the distortion harmonic power and noise generated by the device itself to the output power.

Therefore, if the Class D power amplifier is applied to a multi-channel wireless speaker, such a problem will be more serious because each amplifier uses more than two channels of output, so the design of this case will be a single Class D amplifier The unit is only used to drive a single channel output to connect more than one speaker unit, so that the problem of excessive signal distortion of the power amplifier can be avoided. Therefore, this creation should be the most suitable for high power, low distortion ratio and low cost. Best solution.

A one-to-many wireless speaker device includes at least one outer shell, which has a plurality of inner wall surfaces, and forms an accommodating space from the inner wall surfaces; one or more thin-film elements, and the thin-film element includes an outer wall Support frame and a film body, wherein the film system is integrated on one side of the outer support frame, and the other side of the outer support frame is fixed on the inner side wall surface, and the film body can replace the traditional passive monomer or Any effect of the sound guide tube, and at the same time can reduce the external size and internal volume of the speaker; at least two speaker units are arranged in the accommodating space, and each speaker single system is used to play the sound of different channels At least one circuit board body is electrically connected to the speaker unit, and the circuit board system is disposed in the accommodating space, and the circuit board body includes a wireless transmission unit for receiving a wireless transmission Input audio; a digital audio signal processing unit, which is electrically connected to the wireless transmission unit to perform signal processing on the input audio to generate a virtual sound field signal; at least two Class D amplifier units are used to It is electrically connected to the sound output conversion unit, and each Class D amplifier unit is connected to one or more speaker units corresponding to a single channel, so as to receive the virtual sound field signal through each Class D amplifier unit. And converts an output audio, and magnifies the output audio to drive a single channel and one or more speaker monomer output to produce a multi-channel playback effect.

More specifically, the wireless transmission method of the wireless transmission unit is Bluetooth or WI-FI.

More specifically, the one-to-many wireless speaker box device is manufactured in an integrated manner.

More specifically, the multi-channel system can be 2.0 channels, 2.1 channels, 5.1 channels or more than 5.1 channels.

More specifically, the input audio can be transmitted into the one-to-many wireless speaker device through at least one transmission line.

More specifically, an audio output conversion unit is further connected between the digital audio signal processing unit and the class D amplifier unit to receive the virtual sound field signal and convert it into a virtual sound field with multiple sound channels Signal.

More specifically, the digital audio signal processing unit can perform signal processing on the input audio to generate a virtual sound field signal with multiple sound channels.

More specifically, each of the Class D amplifier units can output more than two channels, and can connect the left and right channel outputs in parallel to a single channel output.

More specifically, the one-to-many wireless speaker box device can be used to play music in addition to a single one-to-many wireless speaker box device, or to group two or more one-to-many wireless speaker box devices Team link to play/receive audio signals, producing the effect of playing music and singing karaoke.

More specifically, the one-to-many wireless speaker speaker device can improve the problem that the greater the power of the class D power amplifier, the greater the magnification, but the greater the signal distortion ratio.

More specifically, the film system will be formed from materials with soft or elastic materials.

More specifically, the casing has at least one penetrating hole, and the penetrating hole can penetrate to the inner wall surface, and the thin film element can cover the penetrating hole of the inner wall surface.

Regarding other technical contents, features and effects of this creation, they will be clearly presented in the following detailed description of the preferred embodiments with reference to the drawings.

Please refer to Figures 1A~1C for a first implementation structure diagram, a cross-sectional structure diagram on one side of the first implementation, and a cross-sectional structure diagram on the other side of the first implementation, wherein the one-to-multiple wireless The speaker speaker device 1 is manufactured in an integrated manner. The pair of multiple wireless speaker speaker devices 1 includes an outer shell 11 having a plurality of inner side wall surfaces 111 and forming a container by the inner side wall surfaces 111 The inner wall surface 111 can be combined with a plurality of thin film elements 12, the thin film element 12 includes an outer support frame 121 and a thin film body 122, wherein the thin film body 122 is coupled to the side of the outer support frame 121 The other side of the outer support frame 121 is fixed on the inner wall surface 111, and the film body 122 will be formed of a material with a soft or elastic material;

At least two speaker units 131, 132 and at least one circuit board body 14 are further arranged in the accommodating space, wherein the speaker units 131, 132 can be fixed on the inner side wall surface 111 and protrude outward from a sound surface, The speaker units 131 and 132 are used to play sounds of different channels.

In addition, as shown in FIGS. 2A to 2C, the casing 11 has at least one penetration hole 15, and the penetration hole 15 can penetrate to the inner side wall surface 111, and the thin film element 12 can cover the inner side On the penetration hole 15 of the wall surface 111.

As shown in FIG. 3, the circuit board body 14 includes a wireless transmission unit 141, a digital audio signal processing unit 142, and at least two class D amplifier units 1431, 1432 (class D power amplifiers), wherein the wireless The transmission unit 141 is used to receive an input audio in a wireless transmission mode (Bluetooth or WI-FI), and the digital audio signal processing unit 142 is used to process the input audio to generate a virtual sound field signal;

In addition, each Class D amplifier unit 1431, 1432 will be correspondingly connected to one or more speaker units 131, 132. The Class D amplifier unit is used to receive the virtual sound field signal and convert an output audio signal, and can The output audio is magnified to drive the speaker unit corresponding to different sound channels to play the sound of different channels. Since each class D amplifier unit 1431, 1432 can output more than two channels, and the left and right sounds The parallel output of the channel is output as a single channel to a single or more than one speaker unit 131, 132, so it can improve the problem that the greater the power of the class D power amplifier, the greater the magnification, but the greater the signal distortion ratio, and at the same time , Can even achieve the effect of doubling the listening efficiency.

In addition, as shown in FIG. 3, the input audio can be transmitted into the one-to-many wireless speaker speaker device 1 through at least one transmission line 5, and the one-to-many wireless speaker speaker device 1 can be provided with a USB interface for communicating with the transmission line 5 connection, so in addition to connecting the transmission line 5, you can also connect the pen drive.

In addition, the digital audio signal processing unit 142 can perform signal processing on the input audio to generate a virtual sound field signal with multiple sound channels, but in addition to the above-mentioned implementation structure, as shown in FIG. An audio output conversion unit 144 is further connected between the audio signal processing unit 142 and the class-D amplifier units 1431, 1432 for receiving the virtual sound field signal and converting it into a virtual sound field signal with multiple sound channels.

In addition to being able to use a single one-to-many wireless speaker speaker device for playing music, or two or more one-to-many wireless speaker speaker devices for team connection to play/receive music, it is possible to use one Or multiple one-to-many wireless speaker speaker devices produce multi-channel playback effects, where the multi-channel system can be 2.0 channels, 2.1 channels, 5.1 channels or more than 5.1 channels.

When applying the framework of this creation to a 2.0-channel pair of multi-wireless speaker device, as shown in Figure 5, the pair of multi-wireless speaker device has a right speaker unit 231 and a left speaker unit Body 232 and a circuit board body 24, wherein the circuit board body 24 includes a wireless transmission unit 241, a digital audio signal processing unit 242, a right amplifier unit 2431, a left amplifier unit 2432 (the right amplifier unit 2431 and the left Amplifier units 2432 are class D power amplifiers), wherein the digital audio signal processing unit 242 can convert virtual sound field signals with 2 sound channels and send them to the right amplifier unit 2431 and the left amplifier unit 2432, The right amplifier unit 2431 is used to promote the operation of the right speaker unit 231, and the left amplifier unit 2432 is used to promote the operation of the left speaker unit 232.

When the architecture of this creation is applied to a 2.1-channel one-pair multi-wireless speaker enclosure, as shown in Figure 6, the one-to-multiple wireless speaker enclosure has a right speaker unit 331 and a left speaker unit Body 332, a subwoofer unit 333 and a circuit board body 34, wherein the circuit board body 34 includes a wireless transmission unit 341, a digital audio signal processing unit 342, a right amplifier unit 3431, a left amplifier unit 3432, Subwoofer amplifier unit 3433 and filter unit 344 (right amplifier unit 3431, subwoofer amplifier unit 3433 and left amplifier unit 3432 are both class D power amplifiers), wherein the digital audio signal processing unit 342 can be converted to have The virtual sound field signals of the three sound channels are respectively transmitted to the right amplifier unit 3431, the subwoofer amplifier unit 3433, and the left amplifier unit 3432. The right amplifier unit 3431 is used to promote the operation of the right speaker unit 331 The subwoofer amplifier unit 3433 is used to promote the operation of the subwoofer unit 333, and the left amplifier unit 3432 is used to promote the operation of the left speaker unit 332.

When the architecture of this creation is applied to a 5.1-channel pair of multi-wireless speaker device 2, as shown in Figure 7, the pair of multi-wireless speaker device has a speaker unit (front right speaker unit 431, front left speaker unit 432, center speaker unit 433, subwoofer unit 434, rear right speaker unit 435, rear left speaker unit 436) and a circuit board body 44 in which the circuit The board 44 includes a wireless transmission unit 441, a digital audio signal processing unit 442, a sound output conversion unit 444, a class D amplifier unit (front right amplifier unit 4431, front left amplifier unit 4432, center amplifier) Unit 4433, subwoofer amplifier unit 4434, rear right amplifier unit 4435, rear left amplifier unit 4436), wherein the sound output conversion unit 444 can receive the virtual sound field signal of the digital audio signal processing unit 442 And convert the virtual sound field signal with 6 sound channels, and then drive different speaker monomers through different D-type amplifier units.

The advantages of this pair of multi-wireless speaker device provided by this creation when compared with other conventional technologies are as follows: 1. This creation can use a single Class D amplifier unit to drive a single or more than one speaker unit with a single channel, so that the problem of excessive signal distortion of the speaker unit can be avoided. 2. This creation has the advantages of high efficiency and low cost of class D amplifiers, and can improve the shortcomings of high distortion ratio and high signal-to-noise ratio of class D amplifiers, so that it can be applied to high-quality sound performance and can achieve The effect of doubled hearing efficiency.

This creation has been disclosed as above through the above-mentioned embodiments, but it is not intended to limit this creation. Anyone who is familiar with this technical field and has general knowledge should understand the aforementioned technical features and embodiments of this creation without departing from this creation. Within the spirit and scope, some changes and modifications can be made, so the scope of patent protection for this creation shall be subject to the definition as defined in the claims attached to this specification.

1‧‧‧One-to-many wireless speaker speaker device 11‧‧‧Housing 111‧‧‧Inner wall surface 12‧‧‧ Thin film element 121‧‧‧Outer support frame 122‧‧‧Body 131‧‧‧Single speaker 132‧‧‧Single speaker 14‧‧‧ circuit board body 141‧‧‧Wireless transmission unit 142‧‧‧Digital audio signal processing unit 1431‧‧‧D amplifier unit 1432‧‧‧D amplifier unit 144‧‧‧Sound output conversion unit 15‧‧‧Through hole 231‧‧‧right speaker unit 232‧‧‧Single left speaker 24‧‧‧ circuit board body 241‧‧‧Wireless transmission unit 242‧‧‧Digital audio signal processing unit 2431‧‧‧Right amplifier unit 2432‧‧‧left amplifier unit 331‧‧‧right speaker unit 332‧‧‧Left speaker unit 333‧‧‧ Subwoofer 34‧‧‧ circuit board body 341‧‧‧Wireless transmission unit 342‧‧‧Digital audio signal processing unit 3431‧‧‧Right amplifier unit 3432‧‧‧left amplifier unit 3433‧‧‧Subwoofer amplifier unit 344‧‧‧filter unit 431‧‧‧ Front right speaker 432‧‧‧Front left speaker unit 433‧‧‧Central speaker unit 434‧‧‧ Subwoofer 435‧‧‧ Rear right speaker unit 436‧‧‧ Rear left speaker unit 44‧‧‧ circuit board body 441‧‧‧Wireless transmission unit 442‧‧‧Digital audio signal processing unit 4431‧‧‧ Front right amplifier unit 4432‧‧‧Front left amplifier unit 4433‧‧‧Central amplifier unit 4434‧‧‧Subwoofer amplifier unit 4435‧‧‧ Rear right amplifier unit 4436‧‧‧ Rear left amplifier unit 444‧‧‧Sound output conversion unit 5‧‧‧Transmission line

[Figure 1A] This is a schematic diagram of the first implementation structure of the one-to-many wireless speaker box device. [Figure 1B] This is a schematic diagram of a side cross-sectional structure of the first implementation of a one-to-many wireless speaker enclosure device. [Figure 1C] This is a schematic diagram of the other side cross-sectional structure of the first implementation of the one-to-many wireless speaker enclosure device. [Figure 2A] This is a schematic diagram of the second implementation structure of the one-to-many wireless speaker box device. [Figure 2B] This is a schematic cross-sectional structural view of one side of the second implementation of the one-to-many wireless speaker enclosure device. [Figure 2C] This is a schematic diagram of the other side cross-sectional structure of the second implementation of the one-to-many wireless speaker enclosure device. [Figure 3] This is a schematic diagram of the circuit board structure of this one-to-many wireless speaker box device. [Figure 4] This is a schematic diagram of the first application implementation structure of the circuit board body of the one-to-many wireless speaker box device. [Figure 5] This is a schematic diagram of the second application implementation architecture of the circuit board body of the one-to-many wireless speaker box device. [Figure 6] This is a schematic diagram of the third application implementation architecture of the circuit board body of this one-to-many wireless speaker box device. [Figure 7] This is a schematic diagram of a third application implementation architecture of the circuit board body of the one-to-many wireless speaker box device.

1‧‧‧One-to-many wireless speaker speaker device

11‧‧‧Housing

111‧‧‧Inner wall surface

12‧‧‧ Thin film element

121‧‧‧Outer support frame

122‧‧‧Body

131‧‧‧Single speaker

14‧‧‧ circuit board body

Claims (12)

A one-to-many wireless speaker device includes at least: an outer shell having a plurality of inner wall surfaces and forming an accommodating space from the inner wall surfaces; one or more thin-film elements, and the thin-film elements include a An outer support frame and a film body, wherein the film system is integrated on one side of the outer support frame, and the other side of the outer support frame is fixed on the inner side wall surface; at least two speaker monomers are provided on the In the accommodating space, each single speaker system is used to play sounds of different channels; at least one circuit board body is electrically connected to the speaker unit, and the circuit board system is disposed in the accommodating space, And the circuit board body includes: a wireless transmission unit for receiving an input audio in a wireless transmission mode; a digital audio signal processing unit electrically connected to the wireless transmission unit for signal processing the input audio To generate a virtual sound field signal; at least two or more Class D amplifier units are used to electrically connect with the digital audio signal processing unit, and each Class D amplifier unit corresponds to a single unit The channel is connected to one or more speaker units to receive the virtual sound field signal through each Class D amplifier unit and convert an output audio, and magnify the output audio to drive a single channel and one Or more than one speaker output to produce a multi-channel playback effect. A pair of multi-wireless speaker device as described in claim 1, wherein the wireless transmission method of the wireless transmission unit is Bluetooth or WI-FI. A pair of multi-wireless speaker enclosure devices as described in claim 1 is manufactured in an integrated manner. A pair of multi-wireless speaker device as described in claim 1, wherein the multi-channel system can be 2.0 channels, 2.1 channels, 5.1 channels or more than 5.1 channels. The one-to-multiple wireless speaker box device according to claim 1, wherein the input audio can be further transmitted into the one-to-many wireless speaker box device through at least one transmission line. A pair of multi-wireless speaker device as described in claim 1, wherein an audio output conversion unit is further connected between the digital audio signal processing unit and the class D amplifier unit to convert and receive the virtual sound field signal A virtual sound field signal with multiple sound channels is output. A pair of multi-wireless speaker device as described in claim 1, wherein the digital audio signal processing unit can perform signal processing on the input audio to generate a virtual sound field signal having multiple sound channels. A pair of multi-wireless loudspeaker speaker device as described in claim 1, wherein each class D amplifier unit is capable of outputting more than two channels, and can output the left and right channels in parallel as a single channel output. The one-to-many multi-speaker speaker device as described in claim 1 is capable of playing/receiving music from a single one-to-many multi-speaker speaker device, or two or more one-to-many wireless speaker speaker devices Perform team connection to play/receive audio signals to produce the effect of playing music and singing karaoke. As described in claim 1, one of the multi-wireless speaker device can improve the problem that the greater the power of the class D power amplifier, the greater the magnification, but the greater the signal distortion ratio, and at the same time can achieve the hearing efficiency Multiplier effect. A pair of multi-wireless speaker device as described in claim 1, wherein the film system is formed of a material with soft or elastic materials, and the film body can replace the traditional passive monomer Or any effect of the sound guide tube, at the same time can reduce the outer size and content of the speaker. The pair of multi-wireless speaker device as claimed in claim 1, wherein the casing has at least one penetration hole, and the penetration hole can penetrate to the inner side wall surface, and the membrane element can cover the inner side On the penetration hole of the wall surface.

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