CN215897725U - Multifunctional wireless audio equipment - Google Patents
Multifunctional wireless audio equipment Download PDFInfo
- Publication number
- CN215897725U CN215897725U CN202122322138.1U CN202122322138U CN215897725U CN 215897725 U CN215897725 U CN 215897725U CN 202122322138 U CN202122322138 U CN 202122322138U CN 215897725 U CN215897725 U CN 215897725U
- Authority
- CN
- China
- Prior art keywords
- wireless audio
- converters
- mode
- antennas
- encoder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000005236 sound signal Effects 0.000 claims abstract description 12
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000001131 transforming effect Effects 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000005562 fading Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Landscapes
- Radio Transmission System (AREA)
Abstract
The utility model discloses a multifunctional wireless audio device, comprising a mode selection interface, a plurality of antennas for respectively transmitting audio signals, an encoder for communicating with the mode selection interface, a synchronous transformer configured to receive and transform synchronous signals based on a second diversity technique, a plurality of transformers, the encoder configured to receive data symbols including audio, data signals and control signals, and pilot symbols, the encoder further configured to: while in the first mode, receiving and grouping data symbols and pilot symbols to each of a plurality of converters; when in the second mode: an audio signal transmitted on one of a plurality of antennas is received and encoded with data symbols and pilot symbols based on a first diversity technique. The utility model has the advantages that: the problem of multipath fading of the RF signal is mitigated.
Description
Technical Field
The utility model relates to the field of wireless electronic equipment, in particular to multifunctional wireless audio equipment.
Background
Wireless audio devices may involve the use of a number of components, including microphones, wireless audio transmitters, wireless audio receivers, recorders, and/or mixers for capturing, recording, and presenting produced sounds, such as television programs, news broadcasts, movies, live events, and other types of production. The microphone typically captures the sound of the work, which is wirelessly transmitted from the microphone and/or wireless audio transmitter to the wireless audio receiver. The wireless audio receiver may be connected to a sound recorder and/or a sound mixer for recording or mixing sound by a staff member, e.g. making a sound mixer.
Wireless audio transmitters, wireless audio receivers, wireless microphones, and other portable wireless communication devices include antennas for transmitting and receiving Radio Frequency (RF) signals, including digital or analog signals, such as modulated audio signals, data signals, and/or control signals.
When an RF signal is received at a wireless audio receiver, the RF signal may be degraded due to multipath fading caused by constructive interference or other types of interference. This degradation may result in poor signal-to-noise ratio (SNR) of the RF signal, resulting in audio artifacts and resultant output audio muting. During professional stage production and concert, multiple interference is also added, multipath fading problems occur, and transmission and reception of RF signals are affected.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to solve the above problems and to provide a multifunctional wireless audio device that alleviates the problem of multipath fading of RF signals.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a multi-function wireless audio device comprising a mode selection interface for enabling a user to select multiple modes of a wireless audio transmitter, a plurality of antennas to respectively transmit audio signals, an encoder in communication with the mode selection interface, a synchronization transformer configured to receive and transform synchronization signals based on a second diversity technique, the encoder configured to receive data symbols data signals and control signals comprising audio, and pilot symbols, the encoder further configured to: while in the first mode, receiving and grouping data symbols and pilot symbols to each of a plurality of converters; when in the second mode: receiving and encoding data symbols and pilot symbols based on a first diversity technique; and grouping the encoded data symbols and the encoded pilot symbols into one or more subsets of the plurality of converters; each of the plurality of converters is in communication with one of an encoder, a synchronous transformer, and a plurality of antennas, wherein each of the plurality of converters is configured to: combining the data to symbolize, when in the first mode, an audio signal transmitted on one of the plurality of antennas; when in the second mode, the encoded data symbols, the encoded pilot symbols, and the transformed synchronization signal are combined into an audio signal for transmission on one of the plurality of antennas.
Compared with the prior art, the utility model has the advantages that: transmitters that use multiple antenna diversity techniques for different signal types to exploit transmit antenna diversity for optimal multipath performance and improved spectral efficiency; different signal types such as data symbols, pilot symbols and synchronization signals of the audio data signal and the control signal; compared with the wireless audio transmitter with non-diversity, the data rate of the product of the utility model has the advantages that the diversity of the transmitting antenna can be kept consistent and maintained; the number of antennas used by the product of the utility model can be selectable, expandable and scalable to obtain larger coverage area or capacity; even if a particular transmission path fails, it may still be able to operate with reduced range or performance, and may be more robust in both single areas (e.g., stages) and multiple areas (e.g., stages and back office).
Further, the first diversity technique comprises space-time block coding in the frequency domain.
Further, the synchro-transformer includes a phase shifter, and the second diversity technique includes transforming the synchronization signal by applying a phase ramp to the synchronization signal using the phase shifter.
Further, the second diversity technique includes a cyclic switching diversity scheme.
Further, each of the plurality of converters includes an inverse fast fourier transform and a parallel-to-serial converter.
Further, each of the plurality of converters includes a cyclic delay module, an amount of delay of the cyclic delay module depending on a selected mode of a plurality of modes.
Drawings
FIG. 1 is a framework flow diagram of the present invention.
As shown in the figure: 1. mode selection interface, 2, multiple antennas, 3, encoder, 5, synchronous transformer, 6, multiple converters.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
With reference to fig. 1, a multifunctional wireless audio device comprises a mode selection interface 1 for enabling a user to select multiple modes of a wireless audio transmitter, a plurality of antennas 2 for respectively transmitting audio signals, an encoder 3 in communication with the mode selection interface, a synchronization transformer 5 configured to receive and transform synchronization signals based on a second diversity technique, a plurality of transformers 6, the encoder 3 being configured to receive data symbols data signals and control signals comprising audio and pilot symbols, the encoder 3 being further configured to: while in the first mode, receiving and grouping data symbols and pilot symbols to each of the plurality of switches 6; when in the second mode: receiving and encoding data symbols and pilot symbols based on a first diversity technique; and grouping the encoded data symbols and the encoded pilot symbols into one or more subsets of the plurality of converters 6; each of the plurality of converters 6 is in communication with one of the encoder 3, the synchronous transformer 5, and the plurality of antennas 2, wherein each of the plurality of converters 6 is configured to: combining the data to symbolize, when in the first mode, an audio signal transmitted on one of the plurality of antennas; when in the second mode, the encoded data symbols, the encoded pilot symbols, and the transformed synchronization signal are combined into an audio signal for transmission on one of the plurality of antennas.
The first diversity technique comprises space-time block coding in the frequency domain.
The synchrotron 5 comprises a phase shifter and the second diversity technique comprises transforming the synchronization signal by applying a phase ramp to the synchronization signal using the phase shifter.
The second diversity technique comprises a cyclic switching diversity scheme.
Each of the plurality of converters 6 comprises an inverse fast fourier transform and a parallel-to-serial converter.
Each of the plurality of converters 6 comprises a cyclic delay module, the amount of delay of which depends on the selected one of the plurality of modes.
In particular embodiments of the present invention, transmitters employing multiple antenna diversity techniques for different signal types take advantage of transmit antenna diversity to achieve optimal multipath performance and improved spectral efficiency; different signal types such as data symbols, pilot symbols and synchronization signals of the audio data signal and the control signal; compared with the wireless audio transmitter with non-diversity, the data rate of the product of the utility model has the advantages that the diversity of the transmitting antenna can be kept consistent and maintained; the number of antennas used by the product of the utility model can be selectable, expandable and scalable to obtain larger coverage area or capacity; even if a particular transmission path fails, it may still be able to operate with reduced range or performance, and may be more robust in both single areas (e.g., stages) and multiple areas (e.g., stages and back office).
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. A multi-function wireless audio device, characterized by: comprising a mode selection interface for enabling a user to select a plurality of modes of a wireless audio transmitter, a plurality of antennas to respectively transmit audio signals, an encoder in communication with the mode selection interface, a synchronization transformer configured to receive and transform synchronization signals based on a second diversity technique, the encoder configured to receive data symbols data signals and control signals comprising audio, and pilot symbols, the encoder further configured to: while in the first mode, receiving and grouping data symbols and pilot symbols to each of a plurality of converters; when in the second mode: receiving and encoding data symbols and pilot symbols based on a first diversity technique; and grouping the encoded data symbols and the encoded pilot symbols into one or more subsets of the plurality of converters; each of the plurality of converters is in communication with one of an encoder, a synchronous transformer, and a plurality of antennas, wherein each of the plurality of converters is configured to: combining the data to symbolize, when in the first mode, an audio signal transmitted on one of the plurality of antennas; when in the second mode, the encoded data symbols, the encoded pilot symbols, and the transformed synchronization signal are combined into an audio signal for transmission on one of the plurality of antennas.
2. The multifunctional wireless audio device of claim 1, wherein: the first diversity technique comprises space-time block coding in the frequency domain.
3. The multifunctional wireless audio device of claim 1, wherein: the synchro-transformer includes a phase shifter, and the second diversity technique includes transforming the synchronization signal by applying a phase ramp to the synchronization signal using the phase shifter.
4. The multifunctional wireless audio device of claim 1, wherein: the second diversity technique comprises a cyclic switching diversity scheme.
5. The multifunctional wireless audio device of claim 1, wherein: each of the plurality of converters includes an inverse fast fourier transform and a parallel-to-serial converter.
6. The multifunctional wireless audio device of claim 1, wherein: each of the plurality of converters includes a cyclic delay module having an amount of delay dependent on a selected one of a plurality of modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122322138.1U CN215897725U (en) | 2021-09-25 | 2021-09-25 | Multifunctional wireless audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122322138.1U CN215897725U (en) | 2021-09-25 | 2021-09-25 | Multifunctional wireless audio equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215897725U true CN215897725U (en) | 2022-02-22 |
Family
ID=80472127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122322138.1U Expired - Fee Related CN215897725U (en) | 2021-09-25 | 2021-09-25 | Multifunctional wireless audio equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215897725U (en) |
-
2021
- 2021-09-25 CN CN202122322138.1U patent/CN215897725U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10615828B2 (en) | Flexible multi-channel wireless audio receiver system | |
| CN103748850B (en) | Method and apparatus for the analog/digital beam forming of mixing | |
| CN101124733A (en) | Non-simultaneous frequency diversity in radio communication systems | |
| RU2008109239A (en) | WIRELESS COMMUNICATION DEVICE USING ADAPTIVE FORMATION OF DIRECTION DIAGRAM | |
| US11641227B2 (en) | Transmit antenna diversity wireless audio system | |
| US8422539B2 (en) | Multi-carrier receiver, multi-carrier transmitter and multi-carrier transceiver system | |
| CN110958617A (en) | Signal transmission system and signal transmission method | |
| US8872984B2 (en) | Tuner module, and mobile communication terminal | |
| US8364110B2 (en) | Radio frequency front end circuit | |
| CN215897725U (en) | Multifunctional wireless audio equipment | |
| US8396099B2 (en) | Multi-carrier receiver, multi-carrier transmitter and multi-carrier transceiver system | |
| CN213213464U (en) | RF Structures and Electronics | |
| Zhang et al. | On-off analog beamforming with per-antenna power constraint | |
| CN114631265B (en) | An antenna transceiver module, multiple input multiple output antenna transceiver system and base station | |
| JPH06334617A (en) | Digital broadcast wave transmission system and receiver used for the same | |
| CN1856005B (en) | Wireless audio for entertainment systems | |
| Willcox et al. | Implementation of Digital Radio Mondiale receiver-Part I | |
| CN101867400A (en) | Display terminal realization system and method thereof based on non-compressed wireless high-definition transmission technology | |
| CN115395968A (en) | Radio frequency circuit and communication device | |
| CN112886983A (en) | Communication transceiver and terminal device | |
| KR20060020987A (en) | Phase Modulated Transmit Diversity System Using Polarized Antennas | |
| JPS62163423A (en) | Ultrahigh frequency signal changeover equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220222 |