Audio signal processing system
By connecting to the mixing equipment via parallel audio codecs and I2S bus, the problem of traditional audio processing systems being unable to handle multiple wireless audio input devices is solved, achieving efficient, low-latency processing and audio quality synchronization of multiple audio signals.
Patent Information
- Application Number
- CN202422678415.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-04
AI Technical Summary
Traditional audio processing systems cannot effectively access and process more than two wireless audio input devices, and cannot meet the needs of complex scenarios such as multi-person live broadcasts or multi-person conferences.
By connecting multiple audio codecs that can only connect to two wireless audio input devices in parallel and then connecting them to a mixing device via an I2S bus, efficient and low-latency processing of multiple audio signals can be achieved.
It enables the access and processing of multiple wireless audio input devices, ensuring the integrity and real-time performance of audio signals and guaranteeing consistent and synchronized audio quality across all channels.
Smart Images
Figure CN223486691U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of audio processing, and in particular to an audio signal processing system. Background Technology
[0002] Traditional audio processing systems often use a single audio codec to receive and process signals from audio input devices for storage, transmission, and playback. While this design can meet basic audio processing needs to some extent, it falls short in complex application scenarios. For example, in complex scenarios such as multi-person live streaming or multi-person conferences, more than two wireless audio input devices are usually required. However, due to wireless bandwidth limitations, cost, and other product-specific factors, a single audio codec can only allow two wireless audio input devices (such as wireless microphones) to be connected, which cannot meet the needs of multi-person live streaming or multi-person conferences. Therefore, there is an urgent need for a device or system that can connect to and process more than two wireless audio input devices. Utility Model Content
[0003] This invention provides an audio signal processing system to at least solve the technical problem in the prior art of lacking an audio codec device or system capable of accessing and processing more than two wireless audio input devices.
[0004] This application provides an audio signal processing system, comprising: a plurality of wireless audio input devices, at least two audio codecs, and a mixing device; wherein the number of the plurality of wireless audio input devices is twice the number of the at least two audio codecs, and one audio codec is connected to two wireless audio input devices; the wireless audio input devices are used to transmit digital audio signals to their corresponding audio codecs; the at least two audio codecs are connected in parallel, and each audio codec is connected to the mixing device via an I2S bus, for mixing the digital audio signals transmitted by the corresponding two wireless audio input devices and then transmitting them to the mixing device via the corresponding I2S bus; and the mixing device is used to mix the digital audio signals transmitted by the at least two audio codecs.
[0005] Optionally, the mixing device includes a mixer for mixing digital audio signals transmitted by the at least two audio codecs.
[0006] Optionally, the mixing device further includes an AI noise reduction module, which is used to perform noise reduction processing on the digital audio signals transmitted by the mixer.
[0007] Optionally, the audio codec includes a wireless transceiver module, a mixing module, and an audio output interface; wherein the wireless transceiver module is used to receive digital audio signals transmitted by two corresponding wireless audio input devices and send the digital audio signals to the mixing module; the mixing module is used to mix the digital audio signals from the two wireless audio input devices and transmit the mixed digital audio signals to the mixing device via the I2S bus through the audio output interface.
[0008] Optionally, the audio signal processing system further includes an external audio device, and the audio codec further includes an audio acquisition module; wherein the external audio device is used to send a first analog audio signal to the audio acquisition module; the audio acquisition module is used to convert the first analog audio signal into a digital audio signal and then transmit it to the mixing module; the mixing module is also used to perform mixing processing on the digital audio signal transmitted by the audio acquisition module and the digital audio signal transmitted by the corresponding wireless audio input device.
[0009] Optionally, the audio signal processing system further includes a built-in audio input device connected to an audio codec, the built-in audio input device being used to send a second analog audio signal to the audio acquisition module; the audio acquisition module is also used to convert the second analog audio signal into a digital audio signal and then transmit it to the mixing module.
[0010] In this embodiment, by connecting multiple audio codecs that can only connect to two wireless audio input devices in parallel, the audio signal processing system can connect to more than two wireless audio input devices. Each parallel audio codec transmits its audio signal to the mixing device via a corresponding I2S bus. The I2S bus enables the audio codecs to efficiently and with low latency transmit the processed audio signal to the mixing device, ensuring the integrity and real-time performance of the audio signal and ensuring consistent and synchronized sound quality across all audio inputs. Therefore, this technical solution utilizes the parallel connection of multiple wireless audio input devices, audio codecs, and the integrated processing of the mixing device to achieve the access and processing of multiple wireless audio input devices while ensuring consistent and synchronized sound quality across all audio inputs. This solves the technical problem in the prior art of lacking an audio codec device or system capable of accessing and processing more than two wireless audio input devices.
[0011] The above and other objects, advantages and features of this invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this application in conjunction with the accompanying drawings. Attached Figure Description
[0012] The following sections will describe some specific embodiments of this application in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:
[0013] Figure 1 This is an illustrative example of an audio signal processing system according to an embodiment of this application;
[0014] Figure 2 This is yet another illustrative example of an audio signal processing system according to an embodiment of this application;
[0015] Figure 3 This is yet another illustrative example of an audio signal processing system according to an embodiment of this application;
[0016] Figure 4 This is yet another illustrative example of an audio signal processing system according to an embodiment of this application;
[0017] Figure 5 This is yet another illustrative example of an audio signal processing system according to embodiments of this application; and
[0018] Figure 6 This is yet another illustrative example of an audio signal processing system according to an embodiment of this application. Detailed Implementation
[0019] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0023] This embodiment provides an audio signal processing system, including: multiple wireless audio input devices, at least two audio codecs, and a mixing device; wherein the number of multiple wireless audio input devices is twice the number of at least two audio codecs, and one audio codec is connected to two wireless audio input devices; the wireless audio input devices are used to transmit audio signals to their corresponding audio codecs; the at least two audio codecs are connected in parallel, and each audio codec is connected to the mixing device via an I2S bus, used to mix the digital audio signals transmitted by the corresponding two wireless audio input devices and then transmit them to the mixing device via the corresponding I2S bus; and the mixing device is used to mix the digital audio signals transmitted by the at least two audio codecs.
[0024] Specifically, Figure 1 An exemplary schematic diagram of the audio signal processing system described in an embodiment of this application is shown, with reference to... Figure 1 As shown, the audio signal processing system includes, but is not limited to, three audio codecs 21, 22, and 23 and six wireless audio input devices 11a, 11b, 12a, 12b, 13a, and 13b. Audio codec 21 is connected to wireless audio input devices 11a and 11b, audio codec 22 is connected to wireless audio input devices 12a and 12b, and audio codec 23 is connected to wireless audio input devices 13a and 13b. These three audio codecs 21, 22, and 23 are connected in parallel, and each audio codec is connected to the mixing device 30 via an I2S bus.
[0025] Wireless audio input devices 11a and 11b transmit the first and second digital audio signals to audio codec 21. Audio codec 21 mixes these two received digital audio signals and then transmits them to mixing device 30 via the corresponding I2S bus. Wireless audio input devices 12a and 12b transmit the third and fourth digital audio signals to audio codec 22. Audio codec 22 mixes these two received digital audio signals and then transmits them to mixing device 30 via the corresponding I2S bus. Wireless audio input devices 13a and 13b transmit the fifth and sixth digital audio signals to audio codec 23. Audio codec 23 mixes these two received digital audio signals and then transmits them to mixing device 30 via the corresponding I2S bus. After receiving the three digital audio signals transmitted by audio codecs 21, 22, and 23 via the I2S bus, mixing device 30 performs audio mixing on these three digital audio signals.
[0026] As described in the background section, traditional audio processing systems often use a single audio codec to receive and process signals from audio input devices for storage, transmission, and playback. While this design can meet basic audio processing needs to some extent, it falls short in complex application scenarios. For example, in complex scenarios such as multi-person live streaming or multi-person conferences, more than two wireless audio input devices are usually required. However, due to wireless bandwidth limitations, cost, and other factors inherent to the product itself, a single audio codec can only allow access to two wireless audio input devices (such as wireless microphones), which cannot meet the needs of multi-person live streaming or multi-person conferences.
[0027] To address the aforementioned technical problems, this technical solution connects multiple audio codecs, each capable of connecting only two wireless audio input devices, in parallel, enabling the audio signal processing system to connect to more than two wireless audio input devices. Each parallel audio codec transmits its audio signal to the mixing device via a corresponding I2S bus. The I2S bus allows the audio codecs to efficiently and with low latency transmit the processed audio signal to the mixing device, ensuring the integrity and real-time performance of the audio signal and guaranteeing consistent and synchronized sound quality across all audio inputs. Therefore, this technical solution utilizes the parallel connection of multiple wireless audio input devices, audio codecs, and the integrated processing of the mixing device to achieve the access and processing of multiple wireless audio input devices while ensuring consistent and synchronized sound quality across all audio inputs. This solves the technical problem of the lack of an audio codec device or system in the prior art capable of accessing and processing more than two wireless audio input devices.
[0028] Optionally, the mixing device includes a mixer for mixing digital audio signals transmitted by at least two audio codecs.
[0029] Specifically, if Figure 2 As shown, the mixing device 30 includes a mixer 31, which is used to perform mixing processing on the digital audio signals transmitted by the audio codecs 21, 22 and 23, thereby realizing centralized mixing processing of multiple digital audio signals.
[0030] Optionally, the mixing equipment also includes an AI noise reduction module, which is used to reduce the noise of the digital audio signals transmitted by the mixer.
[0031] Specifically, if Figure 3 As shown, the mixing device 30 also includes an AI noise reduction module 32, which is used to perform noise reduction processing on the digital audio signal transmitted by the mixer 31. In this way, noise in the digital audio signal can be effectively reduced, and audio quality can be improved. In addition, the digital audio signal processed by the mixer 31 can also be directly output through bypass without passing through the AI noise reduction module 32.
[0032] Optionally, the audio codec includes a wireless transceiver module, a mixing module, and an audio output interface; wherein the wireless transceiver module is used to receive digital audio signals transmitted by two corresponding wireless audio input devices and send the digital audio signals to the mixing module; the mixing module is used to mix the digital audio signals from the two wireless audio input devices and transmit the mixed digital audio signals to the mixing device 30 via the I2S bus through the audio output interface.
[0033] Specifically, if Figure 4 As shown, audio codec 21 includes a wireless transceiver module 211, a mixing module 212, and an audio output interface 213; audio codec 22 includes a wireless transceiver module 221, a mixing module 222, and an audio output interface 223; and audio codec 23 includes a wireless transceiver module 231, a mixing module 232, and an audio output interface 233. The mixing modules 212, 222, and 232 can be, for example, digital signal processors (DSP chips).
[0034] Taking audio codec 21 as an example, wireless audio input devices 11a and 11b transmit the first and second digital audio signals to the wireless transceiver module 211 in audio codec 21. The wireless transceiver module 211 then transmits these two digital audio signals to the mixing module 212. The mixing module 212 performs mixing processing on these two digital audio signals, generates the corresponding mixed audio signal, and transmits it to the mixing device 30 through the audio output interface 213 and the I2S bus.
[0035] In this way, each audio codec can process its two received digital audio signals independently before transmitting them to the mixing device 30 for integrated processing, reducing the workload of the mixing device 30. Furthermore, receiving digital audio signals from multiple wireless audio input devices via the wireless transceiver module simplifies equipment deployment, reduces reliance on physical wiring, and effectively lowers the complexity and cost of equipment deployment.
[0036] Optionally, the audio signal processing system further includes an external audio device, and the audio codec further includes an audio acquisition module; wherein the external audio device is used to send a first analog audio signal to the audio acquisition module; the audio acquisition module is used to convert the first analog audio signal into a digital audio signal and then transmit it to the mixing module; the mixing module is also used to perform mixing processing on the digital audio signal transmitted by the audio acquisition module and the digital audio signal transmitted by the corresponding wireless audio input device.
[0037] Specifically, if Figure 5 As shown, audio codec 21 further includes an audio acquisition module 214, audio codec 22 further includes an audio acquisition module 224, and audio codec 23 further includes an audio acquisition module 234. Furthermore, the audio signal processing system also includes external audio devices 11c, 12c, and 13c. Taking external audio device 11c as an example, external audio device 11c can be, for example, an electric guitar, an MP3 player, or a wired microphone, and external audio device 11c is connected to audio codec 21. Thus, external audio device 11c transmits a first analog audio signal to audio codec 21.
[0038] More specifically, the audio acquisition module 214 converts the first analog audio signal transmitted from the external audio device 11c into a digital audio signal and then transmits it to the mixing module 212. The mixing module 212 performs mixing signal processing on the digital audio signal corresponding to the external audio device 11c and the digital audio signals transmitted from the wireless audio input devices 11a and 11b to generate a corresponding mixed audio signal. Then, the mixed audio signal is transmitted to the mixing device 30 via the I2S bus through the audio output interface 213.
[0039] This technical solution greatly enriches the types of input sources for the audio signal processing system by introducing external audio devices, thus meeting the needs of diverse application scenarios.
[0040] Optionally, the audio signal processing system further includes a built-in audio input device connected to an audio codec, used to send a second analog audio signal to the audio acquisition module; the audio acquisition module is also used to convert the second analog audio signal into a digital audio signal and then transmit it to the mixing module.
[0041] Specifically, if Figure 6 As shown, the audio signal processing system also includes built-in audio input devices 11d, 12d, and 13d, respectively connected to audio codecs 21, 22, and 23. Taking built-in audio input device 11d as an example, it can be a built-in microphone of a laptop, smartphone, or tablet. Built-in audio input device 11d can transmit a second analog audio signal to audio codec 21. Audio acquisition module 214 converts the second analog audio signal transmitted by built-in audio input device 11d into a digital audio signal and transmits it to mixing module 212. Mixing module 212 mixes the digital audio signal corresponding to built-in audio input device 11d, the digital audio signals transmitted by wireless audio input devices 11a and 11b, and / or the digital audio signal corresponding to external audio device 11c to generate a corresponding mixed audio signal. Then, the mixed audio signal is transmitted to mixing device 30 via I2S bus through audio output interface 213.
[0042] This technical solution expands the audio input methods by mixing the audio signal corresponding to the built-in audio input device with the audio signal corresponding to the wireless audio input device and / or external audio device. Furthermore, the built-in audio input device is typically integrated into the terminal device, requiring no additional hardware investment, while the wireless audio input device provides an additional audio acquisition channel.
[0043] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0044] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0045] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.
[0046] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An audio signal processing system, characterized in that, include: Multiple wireless audio input devices, at least two audio codecs, and mixing equipment; in The number of the plurality of wireless audio input devices is twice the number of the at least two audio codecs, and one audio codec is connected to two wireless audio input devices; the wireless audio input devices are used to transmit digital audio signals to the corresponding audio codecs; The at least two audio codecs are connected in parallel, and each audio codec is connected to the mixing device through an I2S bus, for mixing the digital audio signals transmitted from the corresponding two wireless audio input devices and then transmitting them to the mixing device through the corresponding I2S bus. as well as The mixing device is used to mix the digital audio signals transmitted by the at least two audio codecs.
2. The audio signal processing system according to claim 1, characterized in that, The mixing device includes a mixer for mixing digital audio signals transmitted by the at least two audio codecs.
3. The audio signal processing system according to claim 2, characterized in that, The mixing device also includes an AI noise reduction module, which is used to perform noise reduction processing on the digital audio signals transmitted by the mixer.
4. The audio signal processing system according to claim 1, characterized in that, The audio codec includes a wireless transceiver module, a mixing module, and an audio output interface; wherein... The wireless transceiver module is used to receive digital audio signals transmitted from two corresponding wireless audio input devices and send the digital audio signals to the mixing module; The mixing module is used to mix the digital audio signals from the two wireless audio input devices and transmit the mixed digital audio signals to the mixing device via the I2S bus through the audio output interface.
5. The audio signal processing system according to claim 4, characterized in that, The audio signal processing system also includes external audio devices, and the audio codec also includes an audio acquisition module; in The external audio device is used to send the first analog audio signal to the audio acquisition module; The audio acquisition module is used to convert the first analog audio signal into a digital audio signal and then transmit it to the mixing module; The mixing module is also used to mix the digital audio signal transmitted by the audio acquisition module with the digital audio signal transmitted by the corresponding wireless audio input device.
6. The audio signal processing system according to claim 5, characterized in that, The audio signal processing system also includes a built-in audio input device connected to an audio codec, the built-in audio input device being used to send a second analog audio signal to the audio acquisition module; The audio acquisition module is also used to convert the second analog audio signal into a digital audio signal and then transmit it to the mixing module.