Audio signal transmission device and method, audio signal receiving device and method, and sound system

Abstract

The invention relates to an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method and a sound system. The audio signal transmission method comprises the following steps: receiving an audio signal by a low noise buffer element, and generating a low noise buffer signal; converting the low noise buffer signal into a digital signal by an analog digital conversion element; serializing the digital signal by a serializer element to output at least one serialized digital signal; and converting the at least one serialized digital signal into at least one optical signal by the optical interface transmission device. The audio signal receiving method comprises the following steps: receiving and converting one of at least one optical signal by the optical interface receiving device and outputting an electric signal; and deserializing the electrical signal by a deserializer element and outputting a deserialized digital signal.

Description

Technical Field

[0001] The invention relates to a sound system, in particular to a sound system which uses optical fiber for signal transmission. Background Art

[0002] Traditional audio systems transmit signals through metal wires. However, to reduce signal loss when passing through metal wires, expensive metal wires must be used, which increases the cost of the overall system. Summary of the invention

[0003] In view of this, some embodiments of the present invention provide an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method and an audio system to improve the problems of the prior art.

[0004] Some embodiments of the present invention provide an audio signal transmission device, comprising a low-noise buffer element, an analog-to-digital conversion element, a serializer element, and an optical interface transmission device; the low-noise buffer element is configured to receive an audio signal to generate a low-noise buffer signal; the analog-to-digital conversion element is configured to convert the low-noise buffer signal into a digital signal; the serializer element is configured to serialize the digital signal to output at least one serialized digital signal; and the optical interface transmission device is configured to convert at least one serialized digital signal into at least one optical signal.

[0005] Some embodiments of the present invention provide an audio signal transmission method, comprising: receiving an audio signal by a low-noise buffer element and generating a low-noise buffer signal; converting the low-noise buffer signal into a digital signal by an analog-to-digital conversion element; serializing the digital signal by a serializer element to output at least one serialized digital signal; and converting at least one serialized digital signal into at least one optical signal by an optical interface transmission device.

[0006] Some embodiments of the present invention provide an audio signal receiving device that can be used in conjunction with the aforementioned audio signal transmission device. The audio signal receiving device includes an optical interface receiving device and a deserializer element; the optical interface receiving device is configured to receive and convert at least one of the optical signals and output an electrical signal; and the deserializer element is configured to deserialize the electrical signal and output a deserialized digital signal.

[0007] Some embodiments of the present invention provide an audio signal receiving method that can be used in conjunction with the aforementioned audio signal transmission method. The audio signal receiving method includes: receiving and converting at least one of the optical signals by an optical interface receiving device and outputting an electrical signal; and deserializing the electrical signal by a deserializer element and outputting a deserialized digital signal.

[0008] Some embodiments of the present invention provide an audio system, comprising: an audio signal transmission device, at least one optical fiber device and at least one audio signal receiving device, wherein the audio signal transmission device comprises: a low-noise buffer element configured to receive an audio signal and generate a low-noise buffer signal; an analog-to-digital conversion element configured to convert the low-noise buffer signal into a digital signal; a serializer element configured to serialize the digital signal to output at least one serialized digital signal; and an optical interface transmission device configured to convert at least one serialized digital signal into at least one optical signal and transmit the at least one optical signal to at least one optical fiber device; each of the at least one audio signal receiving devices comprises: an optical interface receiving device configured to receive and convert one of the at least one optical signals from the at least one optical fiber device to output an electrical signal; and a deserializer element configured to deserialize the electrical signal and output the deserialized digital signal.

[0009] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: Based on the above, some embodiments of the present invention provide an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method and an audio system, which can reduce signal loss and increase transmission distance by integrating a low-noise buffer element, an analog-to-digital conversion element, a serializer element, an optical interface transmission device, an optical interface receiving device and a deserializer element and using an optical fiber device to transmit an optical signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A system block diagram of an audio signal transmission device is shown according to some embodiments of the present invention.

[0011] Figure 2 A system block diagram of an audio signal transmission device is shown according to some embodiments of the present invention.

[0012] Figure 3A A system block diagram of an audio signal transmission device is shown according to some embodiments of the present invention.

[0013] Figure 3B A system block diagram of an audio signal transmission device is shown according to some embodiments of the present invention.

[0014] Figure 4 A system block diagram of an audio signal receiving device is shown according to some embodiments of the present invention.

[0015] Figure 5 A system block diagram of an audio signal receiving device is shown according to some embodiments of the present invention.

[0016] Figure 6A block diagram of an audio system according to some embodiments of the present invention is shown.

[0017] Figure 7 Schematic diagram of an audio system architecture according to some embodiments of the present invention.

[0018] Figure 8 A block diagram of an audio system according to some embodiments of the present invention is shown.

[0019] Fig. 9 Schematic diagram of an audio system architecture according to some embodiments of the present invention.

[0020] Fig. 10A Schematic diagram of an audio system application according to some embodiments of the present invention.

[0021] Fig. 10B Schematic diagram of an audio system application according to some embodiments of the present invention.

[0022] Fig.11 Schematic diagram of an audio system application according to some embodiments of the present invention.

[0023] Fig.12 A flow chart of an audio signal transmission method according to an embodiment of the present invention is shown.

[0024] Fig.13 A flow chart of an audio signal transmission method according to an embodiment of the present invention is shown.

[0025] Fig.14 A flow chart of an audio signal transmission method according to an embodiment of the present invention is shown.

[0026] Fig.15 A flow chart of an audio signal transmission method according to an embodiment of the present invention is shown.

[0027] Fig.16 A flow chart of an audio signal receiving method according to an embodiment of the present invention is shown.

[0028] Fig.17 A flow chart of an audio signal receiving method according to an embodiment of the present invention is shown.

[0029] Explanation of symbols 100, 601: Audio signal transmission device 101: Low-Noise Buffer Components 102: Analog-to-digital converter 103: Serializer Components 104: Optical interface transmission device 1011, 1012: Sub-low noise buffer components 1041, 1042: Small footprint pluggable optical modules 1043, 1044, 10011, 10012, 11011: Spectrum splitter 400, 500, 603, 604, 801, 802, 10021, 10022, 10031, 10032, 11021~1102N, 11031~1103N: Audio signal receiving device N: positive integer 401: Optical interface receiving device 402: Deserializer Component 501, 706, 707: Digital speaker amplifier devices +: Positive -:negative electrode 600, 800: Sound system 6021, 6022: Fiber Optic Devices 701: Sound source 702, 901: Preamplifier 703, 704, 705, 803, 804: Transmission Lines 708, 1004: Right speaker unit 709, 1005: Left speaker unit 1104: Right array speaker device 1105: Left array speaker device S1201~S1204, S1301, S1401, S1501, S1601~S1602, S1701: steps. DETAILED DESCRIPTION

[0030] Figure 1 A system block diagram of an audio signal transmission device according to an embodiment of the present invention is shown. Figure 2 A block diagram of an audio signal transmission device system according to an embodiment of the present invention is shown. Figure 1, the audio signal transmission device 100 is used to receive an audio signal and output at least one corresponding optical signal. The audio signal transmission device 100 includes a low-noise buffer element 101, an analog-to-digital conversion element 102, a serializer element 103 and an optical interface transmission device 104. The audio signal may include multiple sub-audio signals, and the sub-audio signal may include multiple multi-channel signals (for example, left and right channel signals). The low-noise buffer element 101 is configured to reduce the noise of the audio signal to generate a low-noise buffer signal. Reducing the noise of the audio signal can improve the accuracy of the operation of the analog-to-digital conversion element 102. In some embodiments of the present invention, the low-noise buffer element 101 includes a second-order low-pass filter (2nd Order Low-Pass Filter) to reduce the noise of the audio signal. Please refer to Figure 2 ,exist Figure 2 In the illustrated embodiment, the audio signal includes a left channel signal and a right channel signal, and the low noise buffer element 101 includes a sub-low noise buffer element 1011 and a sub-low noise buffer element 1012. The sub-low noise buffer element 1011 is configured to reduce the noise of the right channel signal and generate a right channel low noise buffer signal, and the sub-low noise buffer element 1012 is configured to reduce the noise of the left channel signal and generate a left channel low noise buffer signal. Therefore, in this embodiment, the low noise buffer signal generated by the low noise buffer element 101 includes a right channel low noise buffer signal and a left channel low noise buffer signal. Among them, the sub-low noise buffer element 1011 and the sub-low noise buffer element 1012 both include a second-order low-pass filter to reduce the noise of the audio signal.

[0031] Please refer to Figure 1 The analog-to-digital conversion element 102 is configured to convert the low-noise buffer signal output by the low-noise buffer element 101 into a digital signal. In some embodiments of the present invention, the analog-to-digital conversion element 102 includes an N-bit analog-to-digital converter with a sampling rate of MHz to convert the low-noise buffer signal into an N-bit digital signal, where M is a positive real number and N is a positive integer.

[0032] The analog-to-digital conversion element 102 may also include an inter-IC sound signal (I 2 It is worth noting that, although in the aforementioned implementation, a control chip of an inter-chip audio interface is used to process the converted digital signal, a control chip of a time-division multiplexing (TDM) interface or a control chip of a pulse-code modulation (PCM) interface can also be used according to the needs, and the present invention is not limited thereto.

[0033] Please refer to Figure 2 ,exist Figure 2 In the illustrated embodiment, the analog-to-digital conversion element 102 includes an N-bit analog-to-digital converter with a sampling rate of MHz. The N-bit analog-to-digital converter converts the right channel low-noise buffer signal and the left channel low-noise buffer signal. The analog-to-digital conversion element 102 processes the converted digital signals through the control chip of the inter-chip audio interface to integrate the converted digital signals of the left channel and the right channel (for example, the converted digital signals of the left channel and the right channel are integrated into I 2 S format) and transmitted to the serializer element 103.

[0034] It is worth noting that in Figure 2 In the illustrated embodiment, the analog-to-digital conversion element 102 may include two N-bit analog-to-digital converters with a sampling rate of MHz to respectively convert the aforementioned right channel low-noise buffer signal and the left channel low-noise buffer signal. The analog-to-digital conversion element 102 then processes the converted digital signal through the control chip of the inter-chip audio interface to integrate the converted left channel digital signal and the right channel digital signal, and transmits them to the serializer element 103.

[0035] In some embodiments, the aforementioned M is selected as 192k and N is selected as 24. In some embodiments, the aforementioned M is selected as 384k and N is selected as 32. In some embodiments, the aforementioned M is selected as 768k and N is selected as 32. It is worth noting that the values ​​of M and N can be selected according to actual needs and are not limited to the values ​​recorded in the aforementioned embodiments.

[0036] In some embodiments of the present invention, the analog-to-digital conversion component 102 includes a multi-channel analog-to-digital converter.

[0037] Please refer to Figure 1 The serializer element 103 is configured to serialize the received digital signal to output at least one serialized digital signal. The serializer element 103 may include at least one serializer to output at least one serialized digital signal. The serializer mainly uses differential signal transmission technology, which has the characteristics of low power consumption, strong anti-interference and high speed. Theoretically, the maximum transmission rate of the serial interface can reach more than 10Gbps.

[0038] See also Figure 2 In some embodiments of the present invention, the serializer element 103 includes a serializer, which converts the integrated converted left channel and right channel digital signals (for example, the integrated converted left channel digital signals and right channel digital signals are I 2S format) into a serialized integrated digital signal, and the serializer element 103 then outputs the serialized integrated digital signal to the optical interface transmission device 104.

[0039] Please refer to Figure 2 In some embodiments of the present invention, the serializer element 103 includes a serializer. The serializer element 103 first divides the received digital signal into a left channel digital signal and a right channel digital signal, and the serializer then serializes the left channel digital signal and the right channel digital signal respectively. In some embodiments of the present invention, the serializer element 103 includes a left channel serializer and a right channel serializer to serialize the left channel digital signal and the right channel digital signal respectively. In the aforementioned embodiment, the serialized left channel digital signal and the serialized right channel digital signal are at least one serialized digital signal output by the serializer element 103.

[0040] Please also see Figure 1 as well as Figure 2 , the optical interface transmission device 104 is configured to convert the at least one serialized digital signal into at least one optical signal. In some embodiments, Figure 2 As shown, the optical interface transmission device 104 includes a small form factor pluggable optical module (SPF Optical Module) 1041 and a small form factor pluggable optical module 1042. The small form factor pluggable optical module 1041 and the small form factor pluggable optical module 1042 are small hot-swappable optical transceivers used in optical communication applications in telecommunications and data communications. Generally, small form factor pluggable optical modules have a variety of different sending and receiving types, and users can choose a suitable small form factor pluggable optical module to transmit data on available optical fiber types (such as multi-mode optical fiber or single-mode optical fiber). It is worth noting that although in Figure 2 Two small package pluggable optical modules are shown in FIG. 1 , and the optical interface transmission device 104 may also include one or more small package pluggable optical modules. The number of small package pluggable optical modules depends on the number of channels required for transmitting information, and the present invention is not limited thereto.

[0041] In some embodiments of the present invention, the small package pluggable optical module 1041 and the small package pluggable optical module 1042 simultaneously convert the serialized integrated digital signal into two optical signals.

[0042] In some embodiments of the present invention, the small package pluggable optical module 1041 and the small package pluggable optical module 1042 convert the aforementioned serialized left channel digital signal and the serialized right channel digital signal into an optical signal corresponding to the left channel and an optical signal corresponding to the right channel, respectively.

[0043] Figure 3A A block diagram of an audio signal transmission device system according to an embodiment of the present invention is shown. Figure 1 , Figure 2 as well as Figure 3A , Figure 3A and Figure 2 In comparison, Figure 3A It includes a small package pluggable optical module 1041 and further includes an optical splitter (Optical Splitter) device 1043 to split the outputs of the small package pluggable optical module 1041 and the small package pluggable optical module 1042 into multiple optical splitter output signals. In some embodiments of the present invention, the serializer element 103 outputs the aforementioned serialized integrated digital signal to the optical interface transmission device 104, and after the small package pluggable optical module 1041 converts the aforementioned serialized integrated digital signal into an optical signal, the optical splitter device 1043 further splits the output of the small package pluggable optical module 1041 into multiple optical splitter output signals. At this time, each optical splitter output signal contains the information of the aforementioned serialized integrated digital signal. After different audio signal receiving devices receive the aforementioned multiple optical splitter output signals, they then take out the left channel digital signal and the right channel digital signal according to the needs based on the received optical splitter output signals.

[0044] Figure 3B A block diagram of an audio signal transmission device system according to an embodiment of the present invention is shown. Figure 1 , Figure 2 as well as Figure 3B , Figure 3B and Figure 2 In comparison, Figure 3B The optical splitter device 1043 and the optical splitter device 1044 are further included to respectively split the outputs of the small package pluggable optical module 1041 and the small package pluggable optical module 1042 into a plurality of optical splitter output signals.

[0045] It is worth noting that the aforementioned optical splitter device 1043 and the optical splitter device 1044 can be selected as a fused biconical tapered optical splitter or a planar waveguide optical splitter according to the requirements, and the present invention is not limited thereto.

[0046] It is also worth noting that although in the aforementioned Figure 2 In the embodiment of FIG. 3 , the audio signal includes a left channel signal and a right channel signal. The audio signal may also include a multi-channel signal with more channels based on demand, or the audio signal may include only a mono signal, which is not limited by the present invention.

[0047] The following will describe in detail the audio signal transmission methods of some embodiments of the present invention and how the various modules of the audio signal transmission device 100 cooperate with each other in conjunction with the drawings.

[0048] Fig.12 A flowchart of an audio signal transmission method according to an embodiment of the present invention is shown. Figure 1 and Fig.12 ,exist Fig.12 In the illustrated embodiment, the audio signal transmission method includes steps S1201 to S1204. In step S1201, the low-noise buffer element 101 receives the audio signal and generates a low-noise buffer signal. In step S1202, the analog-to-digital conversion element 102 converts the low-noise buffer signal into a digital signal. In step S1203, the serializer element 103 serializes the digital signal to output at least one serialized digital signal. And in step S1204, the optical interface transmission device 104 converts at least one serialized digital signal into at least one optical signal.

[0049] Fig.13 A flowchart of an audio signal transmission method according to an embodiment of the present invention is shown. Figure 1 , Figure 2 as well as Fig.13 In some embodiments of the present invention, the optical interface transmission device 104 includes at least one small package pluggable optical module (e.g. Figure 2 The illustrated small package pluggable optical modules 1041 and 1042 ) include step S1204 . In step S1301 , each small package pluggable optical module outputs at least one of the optical signals.

[0050] Fig.14 A flowchart of an audio signal transmission method according to an embodiment of the present invention is shown. Figure 1 , Figure 3 and Fig.14In some embodiments of the present invention, the optical interface transmission device 104 includes at least one small package pluggable optical module (e.g., the small package pluggable optical modules 1041 and 1042 shown in FIG. 3 ) and at least one optical splitter device (e.g., the optical splitter devices 1043 and 1044 shown in FIG. 3 ), each of which receives the output of one of the at least one small package pluggable optical modules, and the aforementioned step S1204 includes S1401. In step S1401, each optical splitter device receives the output of one of the at least one small package pluggable optical modules, and divides the output into a plurality of optical splitter output signals, wherein all of the optical splitter output signals of the at least one optical splitter constitute the aforementioned at least one optical signal.

[0051] It is worth noting that in the aforementioned embodiment, since the energy consumed by using a beam splitter device to split the optical signal into multiple beam splitter output signals and transmit them is less than that consumed by generating and transmitting multiple electrical signals, the energy consumption required for the operation of the sorting system can be reduced.

[0052] Fig.15 A flowchart of an audio signal transmission method according to an embodiment of the present invention is shown. Figure 1 , Figure 2 , Figure 3A , Figure 3B as well as Fig.15 In some embodiments of the present invention, the audio signal includes a plurality of sub-audio signals (e.g. Figure 2 3 ), the low-noise buffer element 101 includes a plurality of sub-low-noise buffer elements (eg Figure 2 3 ), the aforementioned step S1201 includes step S1501. In step S1501, each sub-low-noise buffer element (eg Figure 2 and the sub-low-noise buffer element 1011 and the sub-low-noise buffer element 1012 shown in FIG. 3) receive the sub-audio signals (eg Figure 2 3 ) to generate a plurality of sub-low-noise buffer signals of the low-noise buffer signal.

[0053] Figure 4 A block diagram of an audio signal receiving device system according to an embodiment of the present invention is shown. Figure 4The audio signal receiving device 400 is used to receive at least one of the optical signals output by the aforementioned audio signal transmission device 100 and generate a corresponding deserialized digital signal. The audio signal receiving device 400 includes an optical interface receiving device 401 and a deserializer element 402. The optical interface receiving device 401 is configured to receive and convert one of the at least one optical signals received and output an electrical signal. In some embodiments of the present invention, the corresponding Figure 2 , Figure 3A as well as Figure 3B In the illustrated embodiment, the optical interface receiving device 401 includes a small package pluggable optical module to receive and convert one of the at least one optical signal received and output an electrical signal. The aforementioned electrical signal corresponds to one of the at least one serialized digital signals output by the serializer element 103. The deserializer element 402 corresponds to Figure 1 The serializer element 103 is configured to deserialize the signal serialized by the serializer element 103. The deserializer element 402 is configured to deserialize the electrical signal output by the optical interface receiving device 401 and output a deserialized digital signal.

[0054] Please also see Figure 2 as well as Figure 4 Following the embodiment in which the serializer serializes the integrated converted left channel and right channel digital signals into a serialized integrated digital signal, in this embodiment, regardless of whether the audio signal receiving device 400 receives Figure 2 The optical signal outputted by the small package pluggable optical module 1041 or the small package pluggable optical module 1042 and the electrical signal outputted by the small package pluggable optical module of the optical interface receiving device 401 all correspond to the serialized integrated digital signal. The deserializer element 402 deserializes the electrical signal outputted by the optical interface receiving device 401 to obtain a deserialized digital signal corresponding to the aforementioned integrated converted left channel and right channel digital signals.

[0055] Please also refer to Figure 2 as well as Figure 4 , following the embodiment in which the serializer serializes the left channel digital signal and the right channel digital signal respectively, if the audio signal receiving device 400 receives Figure 2 The optical signal output by the small package pluggable optical module 1041 corresponds to the optical signal output by the small package pluggable optical module of the optical interface receiving device 401, and the deserialized digital signal output by the deserializer element 402 corresponds to the right channel digital signal.

[0056] Please also see Figure 3A as well as Figure 4 , to correspond to Figure 3A Taking the illustrated embodiment as an example, if the audio signal receiving device 400 receives Figure 3A The optical signal output by the optical splitter device 1043 corresponds to the serialized integrated digital signal output by the small package pluggable optical module of the optical interface receiving device 401 .

[0057] Fig.16 A flowchart of an audio signal receiving method according to an embodiment of the present invention is shown. Figure 4 as well as Fig.16 , Fig.16 The audio signal receiving method shown can be used in conjunction with the aforementioned Figures 12 to 15 The audio signal transmission method shown is combined with Fig.16 In the illustrated embodiment, the audio signal receiving method comprises steps S1601 to S1602. In step S1601, the optical interface receiving device 401 receives and converts at least one of the optical signals and outputs an electrical signal. In step S1602, the deserializer element 402 deserializes the electrical signal and outputs a deserialized digital signal.

[0058] Figure 5 A block diagram of an audio signal receiving device system according to an embodiment of the present invention is shown. Figure 5 , compared to Figure 4 The audio signal receiving device 400 shown in the figure, the audio signal receiving device 500 further comprises a digital speaker amplifier device 501. The digital speaker amplifier device 501 is configured to convert the deserialized digital signal into a power output signal, wherein Figure 5 The "+" symbol and the "-" symbol shown represent the positive and negative poles of the power output signal. The step of converting the deserialized digital signal into the power output signal includes: (1) selecting the portion to be output from the deserialized digital signal and (2) amplifying the portion to be output from the deserialized digital signal so that the power output signal reaches a level sufficient to drive a speaker or earphone. In some embodiments of the present invention, the digital speaker amplifier device 500 includes a digital speaker amplifier circuit to amplify the deserialized digital signal.

[0059] Taking the embodiment in which the aforementioned serializer serializes the integrated converted left and right channel digital signals into a serialized integrated digital signal as an example, if the digital speaker amplifier device 500 is to output a right channel signal, the digital speaker amplifier device 500 first extracts the right channel digital signal from the deserialized digital signal (corresponding to the aforementioned integrated converted left and right channel digital signals) and then amplifies it into a power output signal.

[0060] Taking the above embodiment in which the serializer serializes the left channel digital signal and the right channel digital signal respectively as an example, if the digital speaker amplifier device 500 is to output the right channel signal, the audio signal receiving device 400 is configured to receive the optical signal corresponding to the right channel. At this time, the digital speaker amplifier device 500 will amplify all the deserialized digital signals (i.e., select all the deserialized digital signals as the part to be output) into a power output signal.

[0061] Fig.17 A flowchart of an audio signal receiving method according to an embodiment of the present invention is shown. Figure 5 , Fig.16 as well as Fig.17 ,exist Fig.17 In the illustrated embodiment, after the aforementioned step S1602 , step S1701 is further executed. In step S1701 , the digital speaker amplifier device 501 converts the deserialized digital signal into a power output signal.

[0062] In this embodiment, since the digital speaker amplifier device 501 is used to directly convert the deserialized digital signal into a power output signal to directly drive the speaker or earphone, instead of converting the deserialized digital signal into an analog signal to drive the speaker or earphone, the number of contacts can be reduced to reduce signal loss.

[0063] Figure 6 A block diagram of an audio system according to an embodiment of the present invention is shown. Figure 7 A schematic diagram of a sound system structure according to an embodiment of the present invention is shown. Figure 6 The audio system 600 includes an audio signal transmission device 601, an optical fiber device 6021, an optical fiber device 6022, an audio signal receiving device 603, and an audio signal receiving device 604. The audio signal transmission device 601 can be an audio signal transmission device described in the above embodiments (such as Figure 1 3 ), the audio signal receiving device 603 and the audio signal receiving device 604 adopt the aforementioned Figure 4 The audio signal receiving device 400 described in the embodiment can use single-mode optical fiber or multi-mode optical fiber as the optical fiber device 6021 and the optical fiber device 6022, and the invention is not limited thereto.

[0064] Please also see Figure 6 as well as Figure 7 ,exist Figure 7In the illustrated embodiment, the signal generated by the audio source 701 is converted into an audio signal input to the audio signal transmission device 601 via the preamplifier 702. The aforementioned audio signal includes a left channel signal and a right channel signal, and is transmitted to the audio signal transmission device 601 via the transmission line 703. The left channel signal and the right channel signal are converted into two optical signals corresponding to the serialized integrated digital signal after passing through the audio signal transmission device 601. The aforementioned two optical signals are transmitted to the audio signal receiving device 603 and the audio signal receiving device 604 respectively. The audio signal receiving device 603 and the audio signal receiving device 604 output deserialized digital signals respectively. The deserialized digital signals are transmitted to the digital speaker amplifier devices 706 and 707 via the transmission lines 705 and 706 respectively to convert the deserialized digital signals into power output signals.

[0065] The power output signals of the digital speaker amplifier devices 706 and 707 respectively drive the right speaker device 708 and the left speaker device 709. The transmission lines 703, 704 and 705 can be RCA cables.

[0066] Figure 8 A block diagram of an audio system according to an embodiment of the present invention is shown. Fig. 9 A schematic diagram of a sound system structure according to an embodiment of the present invention is shown. Figure 8 , compared to Figure 7 The illustrated embodiment, Figure 8 The audio signal receiving device 801 and the audio signal receiving device 802 in the sound system 800 adopt the aforementioned Figure 5 The audio signal receiving device 500 described in the embodiment, that is, the audio signal receiving devices 801 and 802 are respectively provided with a digital speaker amplifier device 501 .

[0067] Please also see Figure 8 as well as Fig. 9 ,exist Fig. 9 In the illustrated embodiment, compared to Figure 7In the illustrated embodiment, the signal generated by the audio source 701 is converted into an audio signal input to the audio signal transmission device 601 via the pre-amplifier 901, wherein the pre-amplifier 901 includes an audio source switch. The left channel signal and the right channel signal are converted into two optical signals corresponding to the serialized integrated digital signal after passing through the audio signal transmission device 601, and the two optical signals are transmitted to the audio signal receiving device 801 and the audio signal receiving device 802 respectively. The digital speaker amplifier device 501 of the audio signal receiving device 801 and the digital speaker amplifier device 501 of the audio signal receiving device 802 respectively output power output signals. The power output signals of the digital speaker amplifier devices 706 and 707 drive the right speaker 708 and the left speaker 709 respectively via the transmission lines 803 and 804. The transmission lines 803 and 804 can be speaker cables.

[0068] It is worth noting that in the aforementioned embodiment, the left channel signal and the right channel signal are converted into two optical signals corresponding to the serialized integrated digital signal after passing through the audio signal transmission device 601. The audio system 600, 800 can also make the left channel signal and the right channel signal generate an optical signal corresponding to the left channel and an optical signal corresponding to the right channel respectively through the audio signal transmission device 601. The optical signal corresponding to the left channel is transmitted to the audio signal receiving device 603 through the optical fiber device 6021, and the optical signal corresponding to the right channel is transmitted to the audio signal receiving device 604 through the optical fiber device 6022.

[0069] Fig. 10A A schematic diagram of an application of a sound system according to an embodiment of the present invention. Figure 3A as well as Fig. 10A ,exist Fig. 10A In the illustrated embodiment, the audio signal includes a left channel signal and a right channel signal. The left channel signal and the right channel signal are converted into four optical signals corresponding to the serialized integrated digital signal after passing through the audio signal transmission device 100. Among them, the audio signal receiving devices 10021, 10022, 10031, 10032 adopt the aforementioned Figure 4The audio signal receiving device 500 described in the embodiment. Two optical signals are transmitted to the audio signal receiving device 10021 and the audio signal receiving device 10022 for driving the right speaker device 1004, and two optical signals are transmitted to the audio signal receiving device 10031 and the audio signal receiving device 10032 for driving the left speaker device 1005. The right speaker device 1004 and the left speaker device 1005 both have a treble terminal and a bass terminal. The power output signal of the audio signal receiving device 10021 is connected to the treble terminal of the right speaker device 1004, and the power output signal of the audio signal receiving device 10022 is connected to the bass terminal of the right speaker device 1004; the power output signal of the audio signal receiving device 10031 is connected to the treble terminal of the left speaker device 1005, and the power output signal of the audio signal receiving device 10032 is connected to the bass terminal of the right speaker device 1005, wherein Fig. 10A The "+" symbol and the "-" symbol shown represent the positive and negative poles of the power output signal. In the aforementioned embodiment, since the optical interface transmission device 104 is used to convert the electrical signal into an optical signal first, the optical splitter device 10043 can be used to divide the signal into multiple signals and transmit them to the audio signal receiving devices 10021, 10022, 10031, and 10032 respectively under low energy consumption, and since the optical fiber device is used to transmit the optical signal, the signal loss can be reduced and the transmission distance can be increased.

[0070] Fig. 10B A schematic diagram of an application of a sound system according to an embodiment of the present invention. Figure 3B as well as Fig. 10B ,exist Fig. 10B In the illustrated embodiment, two optical signals corresponding to the left channel and two optical signals corresponding to the right channel are generated (generated by the optical splitter device 10012 and the optical splitter device 10011, respectively). The two optical signals corresponding to the left channel are transmitted to the audio signal receiving device 10031 and the audio signal receiving device 10032 for driving the left speaker device 1005, and the optical signal corresponding to the right channel is transmitted to the audio signal receiving device 10021 and the audio signal receiving device 10022 for driving the right speaker device 1004.

[0071] Fig.11 A schematic diagram of an application of a sound system according to an embodiment of the present invention. Fig. 10A as well as Fig.11 , compared to Fig. 10AIn the illustrated embodiment, the left channel signal and the right channel signal are converted into a plurality of optical signals (generated by the optical splitter device 11011) corresponding to the serialized integrated digital signal after passing through the audio signal transmission device 100. A portion of the aforementioned plurality of optical signals is transmitted to the audio signal receiving devices 11021~1102N driving the right array speaker device 1104, and another portion of the aforementioned plurality of optical signals is transmitted to the audio signal receiving devices 10031~1103N driving the left array speaker device 1105, wherein N is a positive integer.

[0072] Based on the above, some embodiments of the present invention provide an audio signal transmission device, an audio signal transmission method, an audio signal receiving device, an audio signal receiving method and an audio system, which can reduce signal loss and increase transmission distance by integrating a low-noise buffer element, an analog-to-digital conversion element, a serializer element, an optical interface transmission device, an optical interface receiving device and a deserializer element and using an optical fiber device to transmit an optical signal.

Claims

1. An audio signal transmission device, characterized in that : a low noise buffer element configured to receive an audio signal and generate a low noise buffer signal; an analog-to-digital conversion element configured to convert the low-noise buffer signal into a digital signal; a serializer element configured to serialize the digital signal to output at least one serialized digital signal; as well as An optical interface transmission device is configured to convert the at least one serialized digital signal into at least one optical signal.

2. The audio signal transmission device according to claim 1, characterized in that :The optical interface transmission device includes at least one small package pluggable optical module, and each of the small package pluggable optical modules outputs one of the at least one optical signal.

3. The audio signal transmission device according to claim 1, characterized in that :The optical interface transmission device includes at least one small package pluggable optical module and at least one splitter device, each of the at least one splitter device receives the output of one of the at least one small package pluggable optical modules and splits the output into multiple splitter output signals, wherein all the splitter output signals of the at least one splitter constitute the at least one optical signal.

4. The audio signal transmission device according to claim 1, characterized in that :The audio signal includes multiple sub-audio signals; the low-noise buffer element includes multiple sub-low-noise buffer elements, each of the sub-low-noise buffer elements receives one of the sub-audio signals to generate multiple sub-low-noise buffer signals of the low-noise buffer signal.

5. The audio signal transmission device according to claim 4, characterized in that : Each of the sub-audio signals includes multiple multi-channel signals.

6. The audio signal transmission device according to claim 1, characterized in that :The analog-to-digital conversion element includes a multi-channel analog-to-digital converter.

7. An audio signal receiving device used in conjunction with the audio signal transmitting device according to any one of claims 1 to 6, characterized in that : an optical interface receiving device configured to receive and convert one of the at least one optical signal and output an electrical signal; and A deserializer element is configured to deserialize the electrical signal and output a deserialized digital signal.

8. The audio signal receiving device according to claim 7, characterized in that The audio signal receiving device comprises: A digital speaker amplifier device is configured to convert the deserialized digital signal into a power output signal.

9. A method for transmitting an audio signal, characterized in that : A low-noise buffer element receives an audio signal and generates a low-noise buffer signal; Converting the low noise buffer signal into a digital signal by an analog-to-digital conversion element; serializing the digital signal by a serializer element to output at least one serialized digital signal; as well as The at least one serialized digital signal is converted into at least one optical signal by an optical interface transmission device.

10. The audio signal transmission method according to claim 9, characterized in that : The optical interface transmission device includes at least one small package pluggable optical module, and the audio signal conversion method includes: Each of the small form factor pluggable optical modules outputs one of the at least one optical signal.

11. The audio signal transmission method according to claim 9, characterized in that The optical interface transmission device comprises at least one small package pluggable optical module and at least one optical splitter device, each of the at least one optical splitter device receives an output of one of the at least one small package pluggable optical module, and the audio signal conversion method comprises: Each of the at least one optical splitter device receives an output of one of the at least one small form factor pluggable optical modules and splits the output into a plurality of optical splitter output signals, wherein all of the optical splitter output signals of the at least one optical splitter constitute the at least one optical signal.

12. The audio signal transmission method according to claim 9, characterized in that : the audio signal includes a plurality of sub-audio signals; the low-noise buffer element includes a plurality of sub-low-noise buffer elements, and the audio signal conversion method includes: Each of the sub-low-noise buffer elements receives one of the sub-audio signals to generate a plurality of sub-low-noise buffer signals of the low-noise buffer signal.

13. The audio signal transmission method according to claim 12, characterized in that : Each of the sub-audio signals includes multiple multi-channel signals.

14. The audio signal transmission method according to claim 9, characterized in that :The analog-to-digital conversion element includes a multi-channel analog-to-digital converter.

15. An audio signal receiving method used in conjunction with the audio signal transmission method according to any one of claims 9 to 14, characterized in that : An optical interface receiving device receives and converts one of the at least one optical signal and outputs an electrical signal; and A deserializer element deserializes the electrical signal and outputs a deserialized digital signal.

16. The audio signal receiving method according to claim 15, characterized in that The audio signal receiving method further comprises: The deserialized digital signal is converted into a power output signal by a digital speaker amplifier device.

17. A sound system, characterized in that : An audio signal transmission device, at least one optical fiber device and at least one audio signal receiving device, wherein the audio signal transmission device comprises: a low noise buffer element configured to receive an audio signal and generate a low noise buffer signal; an analog-to-digital conversion element configured to convert the low noise buffer signal into a digital signal; a serializer element configured to serialize the digital signal to output at least one serialized digital signal; and an optical interface transmission device configured to convert the at least one serialized digital signal into at least one optical signal and transmit the at least one optical signal to the at least one optical fiber device; each of the at least one audio signal receiving devices comprises: an optical interface receiving device configured to receive and convert one of the at least one optical signal from the at least one optical fiber device to output an electrical signal; and a deserializer element configured to deserialize the electrical signal and output a deserialized digital signal.

18. The sound system according to claim 17, characterized in that :The audio signal includes multiple multi-channel signals; the low-noise buffer element includes multiple sub-low-noise buffer elements, each of the sub-low-noise buffer elements receives one of the multi-channel signals to generate multiple sub-low-noise buffer signals of the low-noise buffer signal, and each of the at least one serialized digital signal corresponds to one of the multi-channel signals.

19. The sound system according to claim 17, characterized in that :The optical interface transmission device includes at least one small package pluggable optical module, and each of the small package pluggable optical modules outputs one of the at least one optical signal.

20. The sound system according to claim 17, characterized in that :The optical interface transmission device includes at least one small package pluggable optical module and at least one splitter device, each of the at least one splitter device receives the output of one of the at least one small package pluggable optical modules and splits the output into multiple splitter output signals, wherein all the splitter output signals of the at least one splitter constitute the at least one optical signal.

21. The sound system according to claim 17, characterized in that Each of the at least one audio signal receiving devices includes: a digital speaker device configured to convert the deserialized digital signal into a power output signal.

22. The sound system according to claim 21, characterized in that The audio system includes at least one speaker device, each of the at least one speaker device receives the power output signal of one of the at least one audio signal receiving devices to play a corresponding sound.

23. The sound system according to claim 21, characterized in that :The audio system includes an array speaker device, which receives the power output signal of each of the at least one audio signal receiving devices to play corresponding sounds.

Images