KR-20260066976-A - Acoustic control device and method

Abstract

According to an embodiment, an acoustic control device is provided comprising: a speaker mounted on each vehicle seat headrest and outputting a first voice signal of a terminal connected to the call; a microphone mounted inside the vehicle and receiving a second voice signal generated inside the vehicle; a first processing unit that generates a third voice signal by adjusting the clarity of the first voice signal and generates a fourth voice signal by adjusting the clarity of the second voice signal; and a second processing unit that controls to output the first voice signal and the second voice signal through a first speaker mounted on a first seat, and to output the third voice signal and the fourth voice signal through a second speaker mounted on a second seat.

Inventors

• 유석훈

Assignees

• 현대자동차주식회사
• 기아 주식회사

Dates

Publication Date

20260512

Application Date

20241105

Claims (20)

1. Speakers mounted on the headrests of vehicle seats, each outputting a first voice signal from a terminal connected to a call; A microphone mounted inside the vehicle and receiving a second voice signal generated inside the vehicle; A first processing unit that generates a third voice signal by adjusting the clarity of the first voice signal and generates a fourth voice signal by adjusting the clarity of the second voice signal; and An audio control device comprising a second processing unit that controls to output the first voice signal and the second voice signal through a first speaker mounted on a first seat, and to output the third voice signal and the fourth voice signal through a second speaker mounted on a second seat.
2. In paragraph 1, An acoustic control device in which the third voice signal has a lower clarity than the first voice signal, and the fourth voice signal has a lower clarity than the second voice signal.
3. In paragraph 1, The above first processing unit is an acoustic control device that controls the clarity through at least one method among pitch shifting, time stretching/compression, reverb, distortion, filtering, and phasing.
4. In paragraph 3, The first processing unit is an acoustic control device that adjusts the intelligibility so that the articulation index (AI), speech intelligibility index (SII), and speech transmission index (STI) of the first voice signal and the second voice signal, respectively, are each below a preset threshold value.
5. In paragraph 1, An acoustic control device further comprising an auxiliary microphone placed in the second seat.
6. In paragraph 5, The above first processing unit is an acoustic control device that calculates a transfer function between a voice signal transmitted from the microphone to the auxiliary microphone and a voice signal transmitted from the second speaker to the auxiliary microphone.
7. In paragraph 6, The above first processing unit is an acoustic control device that generates the fourth voice signal by reflecting the above transfer function.
8. In paragraph 1, The second processing unit is an acoustic control device that controls the timing of the output of the fourth voice signal based on the distance between the first seat and the second seat.
9. In paragraph 1, An acoustic control device in which the first seat is the speaker's seat and the second seat is a seat excluding the speaker's seat.
10. In paragraph 1, An acoustic control device in which the first seat is one of the rear seats and the second seat is the driver's seat.
11. A step in which a communication means receives a first voice signal from a terminal connected to a call; A step in which a processor adjusts the clarity of the first voice signal to generate a third voice signal; A sound control method comprising the step of controlling the processor to output the first voice signal through a first speaker mounted on a first seat and to output the third voice signal through a second speaker mounted on a second seat.
12. In Paragraph 11, The above third voice signal is an acoustic control method having a lower clarity than the above first voice signal.
13. In paragraph 11, the step of generating the third voice signal is, An acoustic control method comprising the step of controlling clarity through at least one of pitch modulation, time extension/compression, reverb, distortion, filtering, and paging.
14. In paragraph 13, the step of generating the third voice signal is, A sound control method comprising the step of generating the third voice signal by adjusting the clarity so that each of the articulation index, speech clarity index, and speech clarity index of the first voice signal is below a preset threshold.
15. A step of receiving a second voice signal generated inside the vehicle through a microphone mounted inside the vehicle; A step in which a processor adjusts the clarity of the second voice signal to generate a fourth voice signal; A sound control method comprising the step of controlling the processor to output the second voice signal through a first speaker mounted on a first seat and to output the fourth voice signal through a second speaker mounted on a second seat.
16. In paragraph 15, The above-mentioned fourth voice signal is an acoustic control method having lower clarity than the above-mentioned second voice signal.
17. In paragraph 15, the step of generating the fourth voice signal is, An acoustic control method comprising the step of controlling clarity through at least one of pitch modulation, time extension/compression, reverb, distortion, filtering, and paging.
18. In paragraph 17, the step of generating the fourth voice signal is, A sound control method comprising the step of generating the fourth voice signal by adjusting the clarity so that each of the articulation index, speech clarity index, and speech clarity index of the second voice signal is below a preset threshold.
19. In paragraph 15, the step of generating the fourth voice signal is, A step of calculating a transfer function between a voice signal transmitted from the above microphone to an auxiliary microphone placed in the second seat and a voice signal transmitted from the second speaker to the auxiliary microphone; and A sound control method comprising the step of generating the fourth voice signal by reflecting the above transfer function.
20. In paragraph 15, the step of controlling to output the fourth voice signal is, A sound control method comprising the step of adjusting the timing at which the fourth voice signal is output based on the distance between the first seat and the second seat.

Description

Acoustic control device and method The embodiments relate to an acoustic control device and a method. Hands-free calling using Bluetooth addresses customers' needs for making calls while driving, which is of significant importance to safe driving. The hands-free calling method has the disadvantage of infringing on privacy because it uses the in-car speaker and the microphone located above the driver's seat to make calls, causing resonance and allowing other passengers to hear the entire conversation. For example, when talking on the phone while driving, everyone in the vehicle can hear the conversation through the car speakers. As a result, there is a problem that may infringe on personal privacy, and although earphones are used to avoid this, connecting them to the ears while driving interferes with safe driving. FIGS. 1 and FIGS. 2 are drawings for explaining a vehicle according to an embodiment. FIG. 3 is a block diagram of a user terminal according to an embodiment. FIG. 4 is a block diagram of a sound control device according to an embodiment. FIGS. 5 and 6 are drawings for explaining the operation of a processor according to an embodiment. FIGS. 7 to 10 are flowcharts of a vehicle control method according to an embodiment. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical concept of the present invention is not limited to some of the described embodiments but can be implemented in various different forms, and within the scope of the technical concept of the present invention, one or more of the components among the embodiments may be selectively combined or substituted. In addition, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a sense that is generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology. Furthermore, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention. In this specification, the singular form may include the plural form unless specifically stated otherwise in the text, and when described as "at least one of A and B and C (or more than one)," it may include one or more of all combinations that can be formed from A, B, and C. In addition, terms such as first, second, A, B, (a), (b), etc. may be used when describing the components of the embodiments of the present invention. These terms are intended merely to distinguish a component from other components and are not limited by the nature, order, sequence, etc., of the said component. And, where it is stated that a component is 'connected', 'combined', or 'joined' to another component, this may include not only cases where the component is directly connected, combined, or joined to the other component, but also cases where it is 'connected', 'combined', or 'joined' due to another component located between the component and the other component. Furthermore, when described as being formed or placed "above or below" each component, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components. Additionally, when expressed as "above or below," it may include the meaning of a downward direction as well as an upward direction relative to a single component. Hereinafter, embodiments will be described in detail with reference to the attached drawings, provided that identical or corresponding components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted. FIGS. 1 and 2 are drawings for illustrating a vehicle according to an embodiment. Referring to FIGS. 1 and 2, the vehicle (1) according to the embodiment may include an AVNT (Audio Video Navigation and Telematics) (100) provided on the center fascia for controlling an audio device, an air conditioner, a Bluetooth device, and a seat heater, etc. Input means for receiving user input may be provided on the center fascia or AVNT (100), and display means for displaying operation information for at least one of the functions performed in the vehicle (1) may also be provided. Input means may include hardware devices such as various buttons or switches, pedals, keyboards, mice, trackballs, various levers, handles or sticks. In addition, the input means may include a device that is a GUI (Graphical User Interface), i.e., software, such as a touch pad. The touch pad can be implemented as a touch screen panel (TSP) and form an interlayer structure with the display panel of the display m