CN220964878U - Bluetooth one-to-many broadcasting device - Google Patents
Bluetooth one-to-many broadcasting device Download PDFInfo
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- CN220964878U CN220964878U CN202322306633.2U CN202322306633U CN220964878U CN 220964878 U CN220964878 U CN 220964878U CN 202322306633 U CN202322306633 U CN 202322306633U CN 220964878 U CN220964878 U CN 220964878U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 238000013139 quantization Methods 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000006837 decompression Effects 0.000 claims description 7
- 230000005236 sound signal Effects 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013144 data compression Methods 0.000 description 1
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Abstract
The invention discloses a Bluetooth one-to-many broadcasting device, which relates to the technical field of Bluetooth broadcasting devices and comprises a transmitter and a receiver, wherein the transmitter comprises an audio acquisition module, an audio quantization module, a DSP data coding and compression module, a Bluetooth one-to-many protocol stack and a wireless transmission module, the Bluetooth one-to-many voice and music transmission technology is adopted, the Bluetooth transmission protocol is adopted, the sampled audio PCM data is recoded through a DSP, compressed and then transmitted to matched Bluetooth equipment in a wireless mode through the Bluetooth protocol, the frequency hopping technology of Bluetooth is adopted, a part of same frequency interference can be effectively avoided, the stability is improved, the available working range is enlarged, the sampled PCM data is recoded and compressed, the data quantity is greatly reduced, the throughput of the data is improved, the highest sound quality of 48KHZ can be achieved, the DSP is adopted to reduce noise on voice transmission, the environmental noise can be reduced to the minimum, and high-definition voice transmission is realized.
Description
Technical Field
The utility model relates to the technical field of Bluetooth broadcasting devices, in particular to a Bluetooth one-to-many broadcasting device.
Background
The current common one-to-many voice and music transmission technology has the advantages of 2.4G, U section, FM and the like, FM is an analog transmission signal, has strong instantaneity and low equipment cost, but when FM is very easy to receive electromagnetic interference of the environment, so that the transmission distance is short and unstable, even if the transmission power is increased, the signal is inevitably lost due to no retransmission mechanism, the voice is broken, the voice is blocked, most of the U section is digital transmission, the retransmission can be theoretically performed, but the frequency is too low, the data throughput is too low, the bandwidth is insufficient, the retransmission is easy to cause data blocking, the frame is dropped, the voice is broken, the voice is blocked, the frequency is low, the data throughput is small, the frequency hopping cannot be realized, only a fixed frequency mode can be adopted, and the stray signal of the current 5G signal tower is partially overlapped with the U section, so that the interference is easy to occur, and most of the 2.4G is digital transmission, but the 2.4G is not subjected to data compression due to the fact that the DSP is not realized, the chip is not fast, so that most of 2.4G is transmitted and the Bluetooth is almost used to the normal frequency band, and the 2.4G is not interfered.
We have therefore proposed a bluetooth one-to-many broadcaster to solve the problems set out above.
Disclosure of utility model
The present utility model is directed to a bluetooth one-to-many broadcasting device, so as to solve the problem of the bluetooth one-to-many broadcasting device in the market in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the Bluetooth one-to-many broadcasting device comprises a transmitter and a receiver, wherein the transmitter comprises an audio acquisition module, an audio quantization module, a DSP data coding and compression module, a Bluetooth one-to-many protocol stack and a wireless transmission module;
The receiver comprises a wireless receiving module, a DPS data decompression decoding module, an analog-to-digital conversion module and an audio power amplification module.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device is provided with the Bluetooth frequency hopping technology, so that part of same-frequency interference can be effectively avoided, the stability is improved, and the available working range is enlarged. Because the sampled PCM data is recoded and compressed, the data volume is greatly reduced, the throughput of the data is improved, the highest sound quality of 48KHZ can be achieved, on the aspect of voice transmission, the DSP is adopted to reduce the noise, the environmental noise can be reduced to the lowest, and the high-definition voice transmission is realized.
As the preferable technical scheme of the utility model, the audio acquisition module comprises an audio acquisition module and is responsible for collecting microphone sound, MP3 memory card decoding sound, mobile phone Bluetooth sound and other external various sounds, and then the audio acquisition module sends the audio acquisition result to the audio quantization module through the low-noise processing circuit.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device is convenient for receiving radio when in use.
As a preferable technical scheme of the utility model, the audio quantization module quantizes analog audio obtained by the low-noise processing circuit into ADC data to form an original PCM data stream so as to prepare for DSP processing data.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device is convenient to noise reduction treatment on radio reception when in use.
As the preferable technical scheme of the utility model, the DSP data encoding and compressing module re-encodes the PCM data stream, compresses the data, reduces the whole data quantity, and sends the processed data to the Bluetooth one-to-many protocol stack, and the Bluetooth protocol stack controls the wireless transmitting module.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device can compress data when in use, and the whole data volume is reduced.
As a preferable technical scheme of the utility model, the wireless transmission module transmits the data of the one-to-many Bluetooth protocol stack to the air in a physical layer and transmits the data in a 2.4G frequency broadcasting mode, thereby realizing one-to-many transmission process, including a plurality of algorithms for enhancing data stability, such as frequency hopping anti-interference processing, data retransmission, data synchronization and the like.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device can realize stable data transmission when in use.
As a preferable technical scheme of the utility model, the wireless receiving module demodulates the wireless signals with the 2.4G frequency in the air according to the secret KEY KEY formed after pairing, receives the signals belonging to the own transmitter, completes receiving the data packet in the air in the physical layer, comprises a plurality of safety and stability measures such as data correction, compensation, frequency hopping and the like, and sends the complete data into the DSP for further processing.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device can enable data transmission to be more stable and safer when in use.
As a preferable technical scheme of the utility model, the DPS data decompression decoding module decompresses and expands the received data, demodulates the data, and forms a PCM data stream by DSP processing to prepare for DAC conversion.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device can decompress data when in use.
As a preferable technical scheme of the utility model, the analog-to-digital conversion module converts the PCM data stream into DAC, restores the DAC to corresponding analog audio signals and prepares for audio power amplification.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device can restore data into audio signals when in use.
As the preferable technical scheme of the utility model, the audio power amplifier module amplifies the analog audio signal to drive the loudspeaker to work and restore the loudspeaker to sound.
By adopting the technical scheme, the Bluetooth one-to-many broadcasting device can restore and play the received audio when in use.
Compared with the prior art, the utility model has the beneficial effects that:
1. The Bluetooth one-to-many broadcasting device is provided with the Bluetooth one-to-many transmission technology, so that the device can improve the tone quality, improve the anti-interference capability of wireless transmission, enlarge the use scene and range of one-to-many transmission and increase the user experience;
2. The Bluetooth one-to-many broadcasting device is provided with a DSP data coding and compressing module, recodes PCM data flow and compresses data, so that the device adopts a Bluetooth transmission protocol when in use, recodes sampled audio PCM data through a DSP, compresses the sampled audio PCM data, and wirelessly transmits the data to matched Bluetooth equipment through the Bluetooth protocol.
Drawings
FIG. 1 is a schematic diagram of a transmitter flow of the present utility model;
FIG. 2 is a schematic diagram of a receiver flow according to the present utility model;
FIG. 3 is a schematic diagram of the working principle of the transmitter of the present utility model;
Fig. 4 is a schematic diagram of the working principle of the receiver according to the present utility model.
In the figure: 1. an audio acquisition module; 2. an audio quantization module; 3. the DSP data coding and compressing module; 4. bluetooth one-to-many protocol stacks; 5. a wireless transmission module; 6. a wireless receiving module; 7. DPS data decompression decoding module; 8. an analog-to-digital conversion module; 9. an audio power amplifier module; 10. a transmitter; 11. a receiver.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, the present utility model provides a technical solution: a Bluetooth one-to-many broadcasting device comprises a transmitter 10 and a receiver 11, wherein the transmitter 10 comprises an audio acquisition module 1, an audio quantization module 2, a DSP data coding and compression module 3, a Bluetooth one-to-many protocol stack 4 and a wireless transmission module 5, the receiver 11 comprises a wireless receiving module 6, a DPS data decompression decoding module 7, an analog-to-digital conversion module 8 and an audio power amplification module 9, the audio acquisition module 1 comprises audio acquisition and is responsible for collecting microphone sound, MP3 memory card decoding sound, mobile phone Bluetooth sound and other external various sounds, then the audio is sent to the audio quantization module 2 through a low noise processing circuit, the audio quantization module 2 quantizes analog audio obtained by the low noise processing circuit to form an original PCM data stream, the DSP data coding and compression module 3 prepares for DSP processing the data, recodes the PCM data stream and compresses the data, the whole data volume is reduced, and the processed data is sent to a Bluetooth one-to-many protocol stack 4, the Bluetooth protocol stack controls a wireless transmitting module 5, the wireless transmitting module 5 transmits the data of the one-to-many Bluetooth protocol stack to the air at a physical layer and transmits the data in a 2.4G frequency broadcasting mode, so that one-to-many transmitting process is realized, a plurality of algorithms for enhancing data stability, such as frequency hopping anti-interference processing, data retransmission, data synchronization and the like, are realized, a wireless receiving module 6 demodulates a wireless signal with the frequency of 2.4G in the air according to a secret KEY formed after pairing, receives a signal belonging to a transmitter 10 of the wireless receiving module, completes data package in the receiving air at the physical layer, comprises a plurality of safety and stability measures, such as data correction, compensation, frequency hopping, and the like, and sends the complete data to a DSP for further processing, a DPS data decompression decoding module 7 demodulates the received data, the method comprises the steps of decompressing and expanding data, demodulating the data, forming a PCM data stream through DSP processing, preparing for DAC conversion, performing DAC conversion on the PCM data stream by an analog-to-digital conversion module 8, recovering to corresponding analog audio signals, preparing for audio power amplification, amplifying the analog audio signals by an audio power amplification module 9, pushing a loudspeaker to work, and recovering to sound.
The Bluetooth one-to-many voice and music transmission technology adopts a Bluetooth transmission protocol, realizes recoding and compressing sampled audio PCM data through a DSP, and transmits the sampled audio PCM data to matched Bluetooth equipment in a wireless mode through the Bluetooth protocol.
To complete a series of work, and what is not described in detail in this specification is prior art that is well known to those skilled in the art.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (1)
1. A bluetooth one-to-many broadcasting device comprising a transmitter (10) and a receiver (11);
The method is characterized in that: the transmitter (10) comprises an audio acquisition module (1), an audio quantization module (2), a DSP data encoding and compression module (3), a Bluetooth one-to-many protocol stack (4) and a wireless transmission module (5);
The receiver (11) comprises a wireless receiving module (6), a DPS data decompression decoding module (7), an analog-to-digital conversion module (8) and an audio power amplifier module (9);
The audio acquisition module (1) comprises an audio acquisition module, is responsible for collecting microphone sound, MP3 memory card decoding sound, mobile phone Bluetooth sound and external sound, and then sends the sound to the audio quantization module through a low-noise processing circuit;
the audio quantization module (2) quantizes analog audio obtained by the low-noise processing circuit into ADC data to form an original PCM data stream, so as to prepare for DSP processing data;
The DSP data encoding and compressing module (3) re-encodes the PCM data stream, compresses the data, reduces the whole data volume, and sends the processed data to a Bluetooth one-to-many protocol stack, and the Bluetooth protocol stack controls the wireless transmitting module;
The wireless transmission module (5) transmits the data of the one-to-many Bluetooth protocol stack to the air in a physical layer and transmits the data in a 2.4G frequency broadcasting mode, so that a one-to-many transmission process is realized, and the wireless transmission module comprises algorithms for frequency hopping anti-interference processing, data retransmission, data synchronization and data stability enhancement;
The wireless receiving module (6) demodulates wireless signals with the frequency of 2.4G in the air according to the secret KEY formed after pairing, receives signals of a transmitter (10) of the wireless receiving module, completes the receiving of data packets in the air in a physical layer, comprises data correction, compensation, frequency hopping, safety and stability measures, and sends the complete data into the DSP for further processing;
The DPS data decompression decoding module (7) decompresses and expands the received data, demodulates the data, and forms a PCM data stream by DSP processing so as to prepare for DAC conversion;
The analog-to-digital conversion module (8) converts the PCM data stream into DAC (digital-to-analog converter) and restores the DAC data stream into corresponding analog audio signals so as to prepare for audio power amplification;
The audio power amplifier module (9) amplifies the analog audio signal to push the loudspeaker to work and restore the loudspeaker to sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322306633.2U CN220964878U (en) | 2023-08-28 | 2023-08-28 | Bluetooth one-to-many broadcasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322306633.2U CN220964878U (en) | 2023-08-28 | 2023-08-28 | Bluetooth one-to-many broadcasting device |
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| Publication Number | Publication Date |
|---|---|
| CN220964878U true CN220964878U (en) | 2024-05-14 |
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|---|---|---|---|
| CN202322306633.2U Active CN220964878U (en) | 2023-08-28 | 2023-08-28 | Bluetooth one-to-many broadcasting device |
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| Country | Link |
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| CN (1) | CN220964878U (en) |
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2023
- 2023-08-28 CN CN202322306633.2U patent/CN220964878U/en active Active
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