TWI649576B - Radio device capable of resolving sound source orientation to improve receiving effect - Google Patents

Abstract

A radio device capable of resolving the orientation of a sound source to improve the receiving effect, comprising: an object orientation sensor provided with a millimeter wave signal generator, a transmitting unit and a receiving unit; a processing unit and the object orientation sensing The receiver is electrically connected; a radio module is electrically connected to the processing unit; wherein the object orientation sensor generates a sound source positioning information corresponding to an object to be measured through a radar ranging principle, so that the radio is received The module can adjust its radio beam pattern according to the sound source localization information; therefore, in addition to significantly improving the radio effect, it can greatly simplify the computational complexity of the sound source localization of the radio device and improve the accuracy of the sound source localization. Further, the practicality of the present invention can be greatly improved.

Description

Radio device capable of resolving sound source orientation to improve receiving effect

The invention relates to a radio device.

Press, the microphone is a device that converts sound into electrical signals. Various known recording devices such as mobile phones, DV cameras, or GoPro sports cameras are equipped with microphones, and can record the sound of the scene at the same time when recording. Usually these devices have microphones. It has the characteristics of omnidirectional reception, that is, it has the same response to sound from any direction. However, in some situations, the user may want to particularly strengthen the reception or recording of a specific from a specific location. The sound of the sound source, and even the position of the sound source, may not be clearly recognized by the naked eye or the camera (for example, during the ecological recording of a rare bird, the rare bird may be exactly obscured by objects such as leaves or branches). , Using a directional microphone with only a fixed direction does not really or effectively solve the above problems or needs.

In addition, although the industry has also launched radio device products with sound source localization technology, such as the use of microphone array (microphone array) to achieve sound source localization technology solutions, most of these products use TDOA (Time Difference of Arrival (Time of Arrival) or TOA (Time of Arrival, time of arrival) and other principles, that is, based on the time difference between different microphones receiving the same sound source to calculate the position of the sound source, however, such sound source localization technology is vulnerable to factors such as echo Interference, positioning accuracy is poor, and the specific calculation method is also more complicated, so there is still room for improvement.

Therefore, how to improve the above-mentioned shortcomings of the existing radio device is the technical difficulty that the applicant of this case wants to solve.

In view of the above-mentioned problems existing in the existing radio apparatuses, an object of the present invention is to develop a radio apparatus with a beam pattern that can change the radio reception at any time according to the direction of the sound source.

Another object of the present invention is to develop a radio device that can improve the accuracy of sound source localization and reduce the computational complexity of sound source localization.

In order to achieve the above object, the present invention provides a radio device capable of resolving the azimuth of a sound source to improve the receiving effect, including: an object azimuth sensor, which is provided with a millimeter wave signal generator and a transmitting unit And a receiving unit, the transmitting unit and the receiving unit are electrically connected to the millimeter-wave signal generator respectively; a processing unit, the processing unit is electrically connected to the millimeter-wave signal generator of the object orientation sensor; a radio mode Group, the radio module is electrically connected to the processing unit; wherein the millimeter wave signal generator of the object orientation sensor transmits a millimeter wave signal to a test object through the transmitting unit, and then receives through the receiving unit The millimeter-wave signal is a millimeter-wave reflection signal formed by touching the object to be measured and reflected, so that the processing unit can calculate and generate a sound source positioning information corresponding to the location of the object to be measured according to the radar ranging principle. The system adjusts the beam pattern of the radio according to the sound source positioning information.

The radio module is a microphone.

The radio module is a microphone array supporting a beamforming function.

By using an object orientation sensor including a millimeter wave signal generator Measure and locate the position of the DUT, so that the radio module supporting the beamforming function can quickly adjust the direction of the radio to the direction of the sound source. In addition to significantly improving the radio effect, it can greatly simplify the sound source positioning of the radio device. The computational complexity of the method and the accuracy of the sound source localization can be greatly improved, thereby greatly improving the practicability of the present invention.

〔this invention〕

1‧‧‧ Object orientation sensor

11‧‧‧ millimeter wave signal generator

12‧‧‧ launch unit

13‧‧‧Receiving unit

2‧‧‧ DUT

3‧‧‧ processing unit

4‧‧‧ radio module

5‧‧‧ Beam

S1‧‧‧ millimeter wave signal

S2‧‧‧ millimeter wave reflection signal

The first diagram is a schematic structural block diagram of an embodiment of the present invention.

The second diagram is a schematic diagram of an object orientation sensor of the present invention in which the object orientation sensor sends a millimeter wave signal to the object to be measured.

The third diagram is a schematic diagram of an object orientation sensor receiving a millimeter wave reflection signal reflected from an object to be measured according to an embodiment of the present invention.

The fourth diagram is a schematic diagram of the operation of the radio module adjusting the beam pattern of the radio according to the positioning information of the object under test according to an embodiment of the present invention.

The fifth diagram is a schematic diagram of an operation of detecting and adjusting a radio receiving direction according to an orientation of a measured object according to an embodiment of the present invention.

Please refer to the first figure, which is a schematic structural block diagram of an embodiment of a radio device capable of resolving the sound source orientation to improve the receiving effect according to the present invention. The device includes: an object orientation sensor 1, the object orientation sensing The transmitter 1 is provided with a millimeter wave signal generator 11, a transmitting unit 12 and a receiving unit 13. The transmitting unit 12 and the receiving unit 13 are electrically connected to the millimeter wave signal generator 11, respectively. As shown in the second figure, the millimeter wave signal generator 11 is used to generate a millimeter wave signal S1; The millimeter-wave signal S1 generated by the millimeter-wave signal generator 11 may have a frequency band between 57 and 77 GHz. In this embodiment, the frequency of the millimeter-wave signal S1 is preferably 77 GHz. In addition, the transmitting unit 12 Or the receiving unit 13 may be an antenna. More specifically, the transmitting unit 12 or the receiving unit 13 may actually be a single antenna or an antenna array composed of multiple antennas. Preferably, the transmitting unit 12 or the receiving unit 13 The antenna of the unit 13 may be an antenna or an antenna array having a beamforming function. In this embodiment, the transmitting unit 12 includes 3 antennas, and the receiving unit 13 includes 4 antennas, that is, In an embodiment of the present invention, the transmitting unit 12 and the receiving unit 13 as a whole may be multiple-input-multiple-output beamforming (MIMO beamforming) smart antenna modules composed of 7 antennas, so as to improve Signal transmission and reception effects. Of course, the number and type of antennas of the transmitting unit 12 or receiving unit 13 are not limited to those listed above; a processing unit 3, the processing unit 3, and the object orientation sensor 1 millimeter wave signal generator 11 is electrically connected, and the processing unit 3 may specifically be a controller or a processor, such as a microcontroller (MCU), a central processing unit (CPU) or a digital signal processor (DSP), and the like; A radio module 4 is electrically connected to the processing unit 3 to receive sound from a sound source. The radio module 4 can be a microphone. Preferably, the radio module 4 can In order to support a microphone array of beamforming technology, thereby enabling the radio module 4 to adjust and change the beam pattern of its radio as required; the working principle of the present invention is described below : Here, in order to simplify the description, it is assumed that there is only one DUT 2 in the space, and the DUT 2 is a sound source of interest to the user. Please refer to the second figure. First, The object orientation sensor 1 mm The wave signal generator 11 can send the millimeter wave signal S1 to the outside through the transmitting unit 12. Please refer to FIG. 3 for reference. The millimeter wave signal S1 will reflect after touching the object 2 to form a millimeter wave. The reflected signal S2, the receiving unit 13 can receive the millimeter wave reflected signal S2. In this way, the processing unit 3 can calculate the current position of the DUT 2 relative to the object according to the principle of radar ranging. The orientation of 1 (including the direction and distance), at this time, the processing unit 3 can generate a sound source positioning information corresponding to the current prescription position of the object 2 to be measured. Next, please refer to FIG. The processing unit 3 can transmit the sound source positioning information to the radio module 4, and the radio module 4 (such as a microphone array with a beamforming function) can adjust and change the radio beam according to the sound source positioning information. (beam) 5 and make it focus towards the direction of the object 2 to be tested, so that the sound receiving effect of the radio module 4 on the object 2 can be improved.

In addition, it can be mentioned that although the embodiments disclosed in the foregoing second to fourth figures are based on a single test object 2 as an example, the present invention can actually scan and locate more than one test object at the same time.物 2。 Object 2.

Please refer to FIG. 5 again. For the object 2 to be moved or often to move its position, in one embodiment of the present invention, the object orientation sensor 1 can continuously emit the millimeter wave The signal S1, so that it can continuously track the latest position of the DUT 2, so that the radio module 4 can also continuously align the direction of the radio to the latest position of the DUT 2, and then maintain the best radio effect .

Please refer to the second figure. According to the present invention, the object orientation sensor 1 including the millimeter wave signal generator 11 is used to detect and locate the position of the DUT 2 so that the radio module 4 supporting the beam forming function can Quickly adjust the direction of the radio to the position of the DUT 2, in addition to significantly improving the radio effect, compared with other known technical solutions of sound source localization, it can greatly The operational complexity of the sound source localization of the radio device is simplified, and the accuracy of the sound source localization is improved, thereby greatly improving the practicability of the present invention.

In addition, those skilled in the art should understand that the radio device of the present invention can be further integrated with or used as one of the components of other electronic devices or electronic products. The aforementioned electronic devices or electronic products can include mobile phones and cameras Or a variety of voice-activated or voice-recognized devices such as Amazon Echo or Google Home voice-activated speakers, etc.

However, the above detailed descriptions are specific descriptions of the preferred embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. Any equivalent implementation or change that does not depart from the spirit of the present invention should Included in the patent scope of this case.

Claims (3)

A radio device capable of resolving the azimuth of a sound source to improve the receiving effect, comprising: an object azimuth sensor, the object azimuth sensor is provided with a millimeter wave signal generator, a transmitting unit and a receiving unit, and the transmitting unit and The receiving unit is electrically connected to the millimeter wave signal generator respectively; a processing unit is electrically connected to the millimeter wave signal generator of the object orientation sensor; a radio module, the radio module is connected to the processing The unit is electrically connected; the millimeter-wave signal generator of the object orientation sensor transmits a millimeter-wave signal to a test object through the transmitting unit, and then receives the millimeter-wave signal touching the test object through the receiving unit. The reflected millimeter wave reflection signal enables the processing unit to calculate and generate sound source positioning information corresponding to the azimuth of the object to be measured according to the radar ranging principle. The radio module is based on the sound source positioning information. Adjust the beam pattern of its radio. The radio device capable of resolving the sound source orientation to improve the receiving effect as described in the first item of the patent application scope, wherein the radio module is a microphone. The radio device capable of resolving the sound source orientation to improve the receiving effect as described in item 1 of the scope of patent application, wherein the radio module is a microphone array supporting a beamforming function.