Vehicle-mounted electronic device and sound output control method thereof

Abstract

The present invention provides a vehicle-mounted electronic device comprising: a sound output unit that outputs sound having a set sound characteristic; the characteristic information acquisition unit is used for acquiring characteristic information related to passengers; a sound characteristic specifying unit for specifying the sound characteristic of the passenger according to the passenger-related characteristic information acquired by the characteristic information acquiring unit; a similarity determination means for determining the similarity between the sound characteristic specified by the sound characteristic specifying means and the set sound characteristic, and a sound characteristic changing means for changing the sound characteristic of the sound output by the sound output means when the similarity determined by the similarity determination means is equal to or greater than a predetermined threshold value. According to the invention, the sound between the vehicle-mounted electronic device and the passenger can be distinguished, the passenger in the vehicle is prevented from confusing sound information sources, and misunderstanding and inconvenience in communication are avoided.

Description

Technical Field

[0001] The present invention relates to an in-vehicle electronic device and a control method for its sound output, and particularly to an in-vehicle electronic device capable of changing the sound form of the output sound and a control method for its sound output. Background Art

[0002] With the rapid development of electronic technology and the increasing differentiated requirements of consumers for electronic products, the types of current electronic consumer products show a trend of diversity and increasing personalization. Especially in the current intelligent cockpit, it covers the latest and most intelligent technologies in the fields of sound, light, electricity, etc.

[0003] Particularly in the technical field of automotive audio, many car manufacturers install voice cloning application software in in-vehicle electronic devices to reflect the personalization and entertainment effects of their products. Users can input their own voices through an in-vehicle microphone. By analyzing the characteristics of the input voice and the user's speaking habits, etc., a machine voice with the same or similar sound form as the user's voice is synthesized. Then, when performing navigation or human-machine dialogue, the in-vehicle electronic device can use the machine voice with the same or similar sound form as the user to output voice information, achieving the purpose of synthesizing personalized voices and greatly enhancing driving pleasure.

[0004] Moreover, with the continuous improvement of voice cloning technology, the synthesized machine voice is getting closer and closer to the original voice of the person. Other passengers in the car may not easily distinguish the machine voice from the in-vehicle electronic device from the person's voice. Thus, if the currently set output voice of the in-vehicle electronic device is a machine voice synthesized through voice cloning, and the person whose voice is cloned is also in the car, for other passengers, it may be difficult to distinguish the voice from the machine or the person, especially when both the machine and the person are outputting voices. Other passengers except the person may not be able to tell whether the voice is from the machine or the person, and it is easy to cause problems such as misunderstandings.

[0005] In addition, in many current vehicles, in order for passengers in the front and rear rows to communicate more conveniently and avoid situations where the speaking voice cannot be heard or is unclear, an ICC (In Car Communication, in-vehicle communication system) is installed in the vehicle. The voice information of the passengers in a seat is collected by a microphone arranged around the seat, and then output through a speaker arranged around the seats of other passengers, without disturbing the passengers in other seats. However, in this case, both the machine voice with the same or similar voice pattern and the voice of the person speaking will be output from the speakers around the passenger seats, making it even more difficult for passengers to determine the source of the voice based on the direction, greatly affecting the communication between people in the vehicle and between people and in-vehicle electronic devices, causing communication troubles and easily leading to misunderstandings. Summary of the Invention

[0006] In view of the above technical problems in the prior art, the purpose of the present invention is to provide an in-vehicle electronic device capable of changing the voice characteristics of the output voice and a control method for its voice output.

[0007] The in-vehicle electronic device of the present invention includes: a voice output unit that outputs a voice with set voice characteristics; a feature information acquisition unit that acquires feature information related to passengers; a voice characteristic identification unit that identifies the voice characteristics of passengers based on the feature information related to passengers acquired by the feature information acquisition unit; a passenger number detection unit that detects the number of passengers; a similarity determination unit that, when the number of passengers detected by the passenger number detection unit is two or more, determines the similarity between the voice characteristics identified by the voice characteristic identification unit and the set voice characteristics, and a voice characteristic change unit that, when the similarity determined by the similarity determination unit is above a specified threshold, changes the voice characteristics of the voice output by the voice output unit.

[0008] According to the above in-vehicle electronic device, when the voice characteristics of the currently output voice of the in-vehicle electronic device are the same or similar to the voice characteristics of the voices of the passengers in the vehicle, the voice characteristics of the voice information output by the in-vehicle electronic device can be changed to distinguish the voice of the in-vehicle electronic device from that of the passengers, preventing the passengers in the vehicle from confusing the source of the voice information and avoiding misunderstandings and inconveniences in information communication.

[0009] In addition, in the above in-vehicle electronic device, it further includes: a passenger seat detection unit that detects the seats where the passengers are located. The voice characteristic identification unit identifies the voice characteristics of the passengers in each seat. When the similarity between the identified voice characteristics of the passengers from a certain seat and the set voice characteristics determined by the similarity determination unit is above the specified threshold, the voice characteristic change unit controls the voice output unit to change the voice characteristics of the voice output in the sound zones of other seats.

[0010] In addition, in the above vehicle-mounted electronic device, when the number of passengers detected by the passenger number detection unit is one, the sound characteristic change unit controls the sound output unit to output the sound with the set sound characteristics.

[0011] In addition, in the above vehicle-mounted electronic device, it further includes: a sound characteristic storage unit that stores a variety of different sound characteristics. When the similarity determination unit determines that the similarity is above a specified threshold, the sound characteristic change unit selects a sound characteristic different from the sound characteristic specified by the sound characteristic specifying unit and the set sound characteristic from the sound characteristic storage unit, and outputs the sound to the sound output unit.

[0012] In addition, in the above vehicle-mounted electronic device, it further includes: a sound characteristic conversion unit that converts to different sound characteristics. When the similarity determination unit determines that the similarity is above a specified threshold, the sound characteristic change unit controls the sound characteristic conversion unit to convert to a sound characteristic different from the sound characteristic specified by the sound characteristic specifying unit and the set sound characteristic, and outputs the sound to the sound output unit.

[0013] In addition, in the above vehicle-mounted electronic device, it further includes: a sound characteristic synthesis unit that synthesizes the set sound characteristics.

[0014] In addition, the present invention also provides a vehicle-mounted electronic device, including: a sound output unit that outputs the sound with the set sound characteristics; a passenger sound characteristic acquisition unit that acquires the sound characteristics of the passenger; a similarity determination unit that determines the similarity between the sound characteristics of the sound output by the sound output unit and the sound characteristics of the passenger acquired by the passenger sound characteristic acquisition unit, and a sound characteristic change unit that changes the sound characteristics of the sound output by the sound output unit when the similarity determination unit determines that the similarity is above a specified threshold.

[0015] In addition, the present invention also provides a control method for the sound output of a vehicle-mounted electronic device, including: a feature information acquisition step of acquiring feature information related to the passenger; a sound characteristic specification step of specifying the sound characteristics of the passenger according to the feature information related to the passenger acquired in the feature information acquisition step; a passenger number detection step of detecting the number of passengers; a similarity determination step of determining the similarity between the sound characteristics specified in the sound characteristic specification step and the set sound characteristics of the output sound when the number of passengers detected in the passenger number detection step is two or more, and a sound characteristic change step of changing the sound characteristics of the output sound when the similarity determination step determines that the similarity is above a specified threshold.

[0016] In addition, the present invention also provides a method for controlling the sound output of an in-vehicle electronic device, including: a passenger sound characteristic acquisition step of acquiring the sound characteristics of a passenger; a similarity determination step of determining the similarity between the sound characteristics of the output sound and the sound characteristics of the passenger acquired in the passenger sound characteristic acquisition step, and a sound characteristic change step of changing the sound characteristics of the output sound when the similarity determined in the similarity determination step is above a specified threshold value.

[0017] According to the in-vehicle electronic device and its method for controlling the sound output of the present invention, when the sound characteristics of the sound currently output by the in-vehicle electronic device are the same as or similar to the sound characteristics of the speech of a passenger in the vehicle, the sound characteristics of the voice information sound output by the in-vehicle electronic device can be changed to distinguish the sound between the in-vehicle electronic device and the passenger, prevent the passengers in the vehicle from confusing the source of the sound information, and avoid misunderstandings and inconveniences in information communication. Brief Description of the Drawings

[0018] Figure 1 It is a structural block diagram of the in-vehicle electronic device 100 according to the first embodiment of the present invention.

[0019] Figure 2 It is a processing flow chart of the in-vehicle electronic device 100 according to the first embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of a passenger in the vehicle of the in-vehicle electronic device 100 according to the first embodiment of the present invention.

[0021] Figure 4 It is a structural block diagram of the in-vehicle electronic device 200 according to the second embodiment of the present invention.

[0022] Figure 5 It is a structural block diagram of the in-vehicle electronic device 300 according to the third embodiment of the present invention.

[0023] Figure 6 It is a structural block diagram of the in-vehicle electronic device 400 according to the fourth embodiment of the present invention.

[0024] Figure 7 It is a structural block diagram of the in-vehicle electronic device 500 according to the fifth embodiment of the present invention.

[0025] Figure 8 It is a structural block diagram of the in-vehicle electronic device 600 according to the sixth embodiment of the present invention.

[0026] Figure 9 It is a processing flow chart of the in-vehicle electronic device 600 according to the sixth embodiment of the present invention. Detailed Embodiments

[0027] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings, embodiments, and specific examples. Among them, the following descriptions are only examples given for the convenience of understanding the present invention and are not used to limit the scope of the present invention. In the specific embodiments, the components of the device can be changed, deleted, or added according to the actual situation, and the steps of the method can be changed, deleted, added, or the order can be changed according to the actual situation.

[0028] Figure 1 is a structural block diagram of the in-vehicle electronic device 100 according to the first embodiment of the present invention. As Figure 1 shown, the in-vehicle electronic device 100 according to the first embodiment of the present invention includes: a sound output unit 1, a feature information acquisition unit 2, a sound characteristic determination unit 3, a passenger number detection unit 4, a similarity determination unit 5, and a sound characteristic change unit 6.

[0029] The sound output unit 1 is composed of a power amplifier and a speaker, and outputs a sound with a set sound characteristic. Here, the sound with a set sound characteristic is a sound mode set by the user or default in the in-vehicle electronic device 100, and sound information is output as the machine sound of the in-vehicle electronic device 100. For example, a cartoon sound mode or a star sound mode can be selected, or the user's own synthesized personal sound mode can also be used.

[0030] In addition, the feature information acquisition unit 2 acquires feature information related to passengers. In this embodiment, the occupants in the vehicle are identified through the Occupant Monitoring System (OMS) installed in the vehicle, and feature information related to passengers is acquired. For example, the gender information, age information, etc. of each passenger are identified. Here, the feature information can be set by the user, that is, the user pre-sets the feature information related to passengers to be acquired by the feature information acquisition unit 2 according to his own needs, or it can be default set in the in-vehicle electronic device 100. In addition, in the present invention, the feature information acquisition unit 2 can also acquire feature information related to passengers through other identity authentication or recognition technologies such as voiceprints.

[0031] Furthermore, the voice characteristic specifying unit 3 specifies the voice characteristics of the passenger based on the passenger-related characteristic information obtained by the characteristic information obtaining unit 2. In the present embodiment, the voice characteristic specifying unit 3 selects voice information that matches the gender and age of the passenger in the vehicle from the voice database as the voice characteristics of the characteristics according to the information such as the gender and age of the passenger in the vehicle obtained by the characteristic information obtaining unit 2. Here, voice characteristics are generally divided into loudness, pitch, and timbre. Each voice has different sound waves transmitted due to different characteristics and can be distinguished aurally. A large amount of voice data with different voice characteristics is stored in the voice database. The voice characteristic specifying unit 3 matches the same or similar voices in the voice database according to the characteristic information of the passenger obtained by the characteristic information obtaining unit 2, thereby specifying the voice characteristics of the passenger.

[0032] Here, the voice characteristic specifying unit 3 can, according to requirements, specify all voice characteristics, including loudness, pitch, and timbre, or can also specify a part of the voice characteristics. For example: specifying the voice characteristics of the timbre of the passenger.

[0033] Furthermore, the passenger number detection unit 4 detects the number of passengers in the vehicle. In the present embodiment, gravity sensors provided on each seat are used to determine whether there is a passenger on the seat and calculate the number of passengers by detecting the gravity received on the seat. Here, the effective detection of the weight can be set. For example, only when it is greater than 10 KG is it an effective detection. Moreover, the installation position of the gravity sensor can be directly below the seat or other positions on the seat where the passenger's gravity can be detected. Additionally, in the present invention, the number of passengers in the vehicle can also be identified and detected through the Occupant Monitoring System (OMS).

[0034] Furthermore, when the number of passengers detected by the passenger number detection unit 4 is two or more, the similarity determination unit 5 determines the similarity between the voice characteristics specified by the voice characteristic specifying unit 3 and the set voice characteristics, whether they are the same or similar. Here, the determination of similarity is performed for voice characteristics (loudness, pitch, timbre). In the present embodiment, it is mainly performed for pitch and timbre. The set voice characteristics of the voice output by the voice output unit 1 are compared with the voice characteristics specified by the voice characteristic specifying unit 3, that is, the pitch and timbre of the two are compared for similarity, and a determination result of whether they are the same or the percentage of similarity is obtained. Here, when determining similarity, the two can be compared through the sound wave frequency / waveform diagram to determine whether they are the same or the degree of similarity.

[0035] Further, when the similarity determined by the similarity determination unit 5 is equal to or higher than a specified threshold value, the voice characteristic change unit 6 changes the voice characteristics of the voice output by the voice output unit 1. When it is determined that the similarity between the set voice characteristics of the voice output by the voice output unit 1 and the voice characteristics specified by the voice characteristic specifying unit 3 is equal to or higher than a preset threshold value, for example, when the similarity is greater than 90% which is higher than the preset threshold value, the voice characteristic change unit 6 performs a change process on the voice characteristics of the voice output by the voice output unit 1. In the present embodiment, the voice characteristic change unit 6 extracts voice characteristics other than the set voice characteristics from the in-vehicle electronic device 100 and outputs the voice through the voice output unit 1.

[0036] Next, with reference to Figure 2 and Figure 3 , the processing flow of the in-vehicle electronic device 100 according to the first embodiment will be described in detail. Figure 2 FIG. is a flowchart of the processing of the in-vehicle electronic device 100 according to the first embodiment of the present invention, Figure 3 FIG. is a schematic diagram of the passengers in the vehicle of the in-vehicle electronic device 100 according to the first embodiment of the present invention.

[0037] As Figure 2 shown, the feature information acquisition unit 2 acquires the feature information of the passengers entering the vehicle (step S101). Based on the voiceprint information of the passengers' speech, the feature information such as the gender and age of the passengers is determined, or through the Occupant Monitoring System (OMS), the feature information such as the gender and age of the passengers entering the vehicle is identified. That is, in step S101, the feature information of the passengers in the vehicle can be acquired. For example, as Figure 3 shown, through the in-vehicle electronic device 100 installed in the vehicle, the voiceprints or faces of passengers A, B, and C are identified, and the gender and age information of passengers A, B, and C are acquired. Then, it proceeds to step S102.

[0038] Further, in step S102, the voice characteristic specifying unit 3 specifies the voice characteristics of the passengers based on the feature information of the passengers in the vehicle acquired in step S101. For example, in step S101, the Figure 3When the gender information of passengers A, B, and C is male, based on the characteristic information of male passengers, the voice characteristic specifying unit 3 specifies the voice characteristics of the passengers as male voices. If there are both male and female passengers among passengers A, B, and C, then in step S101, the characteristic information acquisition unit 2 further acquires the age information of the passengers. For example, through facial recognition technology, the approximate age of the passengers is detected and generally classified into adults and minors. In this way, the voice characteristics specified by the voice characteristic specifying unit 3 are the voices of adult males / females or minor males / females. Then, it proceeds to step S103.

[0039] Furthermore, in step S103, the passenger number detection unit 4 detects and determines the number of passengers in the vehicle. In this embodiment, gravity sensing devices provided on each seat are used to detect whether a passenger is seated on the seat. As Figure 3 shown, passengers A, B, and C are detected on the 3 seats in the vehicle, and the total number of passengers in the vehicle is calculated to be 3, which is greater than 1 (the "yes" in step S103). Then it proceeds to step S104. Otherwise, that is, when the number of passengers in the vehicle is 1 (the "no" in step S103), it returns to step S103 to re-detect and determine. It can also end all processings, and the voice output unit 1 still outputs voice using the current set voice characteristics.

[0040] Furthermore, in step S104, the similarity determination unit 5 compares the set voice characteristics of the voice output unit 1 with the voice characteristics specified by the voice characteristic specifying unit 3 and determines whether the similarity is above a specified threshold. In this embodiment, by comparing the voice frequency characteristics of the set voice characteristics with the voice frequency characteristics of the specified voice characteristics, it is determined whether the similarity is above a specified similarity percentage. For example, the specified threshold can be set at 90%. When it is determined that the similarity is above 90% (the "yes" in step S104), it proceeds to step S105. Otherwise, that is, the similarity between the set voice characteristics and the specified voice characteristics is not above 90% (the "no" in step S104), it returns to step S104 to re-detect and determine. It can also end all processings, and the voice output unit 1 still outputs voice using the current set voice characteristics.

[0041] Further, in step S105, the sound characteristic change unit 6 changes the set sound characteristic currently used by the sound output unit 1, and the sound output unit 1 outputs sound. In the present embodiment, the sound characteristic change unit 6 selects other sound characteristics except the set sound characteristic from the sound database of the in-vehicle electronic device 100, changes it to the sound characteristic used by the sound output unit 1, and outputs the sound information. For example, when the set sound characteristic is a male voice, the sound characteristic change unit 6 selects a female voice from the in-vehicle electronic device 100 or an external device, replaces the male voice of the set sound characteristic, and is used for the output of the sound information.

[0042] Here, in the present embodiment, step S103 may also be placed before step S101. First, detect and judge the number of passengers in the vehicle. When the number of passengers is greater than 1, then start the feature information acquisition unit 2 to acquire the feature information of the passengers, and the sound characteristic identification unit 3 to identify the sound characteristics of the passengers.

[0043] Next, in combination with Figure 4 , the in-vehicle electronic device 200 according to the second embodiment of the present invention will be described in detail. Figure 4 It is a structural block diagram of the in-vehicle electronic device 200 according to the second embodiment of the present invention. As shown in the figure, compared with the first embodiment, the in-vehicle electronic device 200 further includes: a passenger seat detection unit 7.

[0044] The passenger seat detection unit 7 detects which seat the passengers in the vehicle are in, and the sound characteristic identification unit 3 identifies the sound characteristics of the passengers on each seat. In this way, after obtaining the identified sound characteristics of the passengers on each seat, compare with the set sound characteristic, and the similarity determination unit 5 determines which seat the identified sound characteristic of the passenger on has a similarity with the set sound characteristic above the specified threshold. At the same time, when independent sound zones are divided in the vehicle according to the positions of the seats, the sound characteristic change unit 6 can change the set sound characteristic output by the sound zone where the passenger seat with a similarity below the specified threshold is located, and output the sound through the sound output unit of the sound zone where the seat is located. On the other hand, for the sound output by the sound zone where the passenger seat with a similarity above the specified threshold is located, the sound characteristic may not be changed, and the set sound characteristic is still used.

[0045] Currently, the technology of the independent sound control system (SSZ: separated sound zone) has been very mature and is widely used in the car cockpit. It can output the sound in the cockpit in zones, allowing the passengers on each seat to freely select the sound information they want to listen to, and being unaffected by the sound output by other seat sound zones, bringing a better travel experience to the passengers. For example, as Figure 3As shown, passengers A, B, and C in the vehicle can listen to their favorite music on their respective seats, and the sound is output from the speakers provided on the headrests of the seats of passengers A, B, and C respectively. Only the passengers on the seats themselves can hear it. Therefore, the passengers do not affect each other. In this embodiment, when the similarity between the specific sound characteristics of passenger B and the set sound characteristics is above a specified threshold, the sound characteristics of the sound output in the sound zones where passengers A and C are located can be changed only. Passengers A and C can distinguish the machine sound of the in-vehicle electronic device 200 and the sound of passenger B. At the same time, the sound characteristics of the sound output in the sound zone where passenger B is located are not changed, that is, the set sound characteristics are still used for sound output, retaining individuality and interest.

[0046] Next, in conjunction with Figure 5 , the in-vehicle electronic device 300 of the third embodiment of the present invention will be described in detail. Figure 5 FIG. is a structural block diagram of the in-vehicle electronic device 300 of the third embodiment of the present invention. As shown in the figure, compared with the first embodiment, the in-vehicle electronic device 300 further includes: a sound characteristic storage unit 8.

[0047] The sound characteristic storage unit 8 is composed of a module with a storage function, can store a variety of different sound characteristics, and can select, through the sound characteristic change unit 6, a sound characteristic different from the sound characteristic specified by the sound characteristic specifying unit 3 and the set sound characteristic, and then output it through the sound output unit 1.

[0048] Here, different sound characteristics can be stored in the sound characteristic storage unit 8 according to categories. For example, a variety of different sound characteristics are stored respectively according to types such as gender, age, and timbre. When the similarity determination unit 5 determines that the similarity is above the specified threshold, it can obtain which type the set sound characteristic of the currently output sound belongs to. Then, the sound characteristic change unit 6 selects other types of sound characteristics from the sound characteristic storage unit 8 and outputs the sound through the sound output unit 1.

[0049] In addition, the sound characteristic change unit 6 can also select, after obtaining the specific sound characteristics of all passengers in the vehicle, a sound characteristic different from the specific sound characteristics of all passengers from the sound characteristic storage unit 8 and output the sound through the sound output unit 1.

[0050] In addition, in the present invention, the sound characteristic storage unit can also be an external device connected to the in-vehicle electronic device 300, in which a variety of different sound characteristics are stored. After being connected to the in-vehicle electronic device 300, the stored data can be transmitted to each other, and the sound characteristic change unit 6 can also select the corresponding sound characteristic from the sound characteristic storage unit to change the set sound characteristic.

[0051] Next, in conjunction with Figure 6 Figure Figure 6 , the vehicle-mounted electronic device 400 according to the fourth embodiment of the present invention will be described in detail. Figure 6 Figure Figure 6 is a structural block diagram of the vehicle-mounted electronic device 400 according to the fourth embodiment of the present invention. As shown in the figure, compared with the first embodiment, the vehicle-mounted electronic device 400 further includes: a sound characteristic conversion unit 9.

[0052] The sound characteristic conversion unit 9 converts the sound characteristic by adjusting the frequency of the sound to obtain a sound characteristic different from that before conversion. Then, the sound characteristic change unit 6 changes the set sound characteristic to the sound characteristic converted by the sound characteristic conversion unit 9, and outputs the sound through the sound output unit 1.

[0053] Here, the sound characteristic conversion unit 9 can convert sound characteristics such as gender, age, and timbre. When the similarity determination unit 5 determines that the similarity is above a specified threshold, the sound characteristic conversion unit 9 converts the set sound characteristic or a specific sound characteristic into a different sound characteristic. For example, when the similarity between the specific sound characteristic and the set sound characteristic of a passenger is above the specified threshold and the voice belongs to an adult male, the sound characteristic conversion unit 9 converts the sound characteristic of the adult male into a female sound characteristic, and the sound characteristic change unit 6 changes the currently used set sound characteristic to the converted female sound characteristic, and outputs the sound through the sound output unit 1.

[0054] In addition, in the present invention, after the sound characteristic specifying unit 3 specifies the sound characteristics of all passengers in the vehicle, the sound characteristic conversion unit 9 can convert all the specified sound characteristics, and the converted sound characteristic is different from the sound characteristics specified for all passengers. The sound characteristic change unit 6 converts the set sound characteristic into any one of the converted sound characteristics, and outputs the sound through the sound output unit 1.

[0055] Next, in conjunction with Figure 7 Figure Figure 7 , the vehicle-mounted electronic device 500 according to the fifth embodiment of the present invention will be described in detail. Figure 7 Figure Figure 7 is a structural block diagram of the vehicle-mounted electronic device 500 according to the fifth embodiment of the present invention. As shown in the figure, compared with the first embodiment, the vehicle-mounted electronic device 500 further includes: a sound characteristic synthesis unit 10.

[0056] The voice characteristic synthesis unit 10 is composed of a dedicated voice synthesis module and can synthesize the set voice characteristics of the voice output by the voice output unit 1. In this embodiment, the voice characteristic synthesis unit 10 analyzes the voice characteristics of the passenger through the voice data output by the passenger. For example, when the user turns on the voice synthesis function and continuously inputs several segments of speech through the microphone, the voice characteristic synthesis unit 10 analyzes the voice characteristics of the passenger, and then generates voice characteristics that are the same as or similar to those of the passenger. The in-vehicle electronic device 500 can output the voice with the voice characteristics synthesized by the voice characteristic synthesis unit 10 through the voice output unit 1.

[0057] Furthermore, hereinafter, in conjunction with Figure 8 , Figure 9 , the in-vehicle electronic device 600 of the sixth embodiment of the present invention will be described in detail. Figure 8 is a structural block diagram of the in-vehicle electronic device 600 of the sixth embodiment of the present invention, Figure 9 is a processing flow chart of the in-vehicle electronic device 600 of the sixth embodiment of the present invention. As Figure 8 shown, the in-vehicle electronic device 600 includes: a voice output unit 1, a passenger voice characteristic acquisition unit 11, a similarity determination unit 5, and a voice characteristic change unit 6.

[0058] The passenger voice characteristic acquisition unit 11 acquires the voice characteristics of the passengers in the vehicle through a dedicated voice recognition module. In this embodiment, the passenger voice characteristic acquisition unit 11 acquires the voice of the passenger speaking and analyzes the voice characteristics of the passenger speaking. The passenger voice characteristic acquisition unit 11 needs to start detection when a passenger is detected in the vehicle.

[0059] Furthermore, in Figure 9 step S201, the passenger voice characteristic acquisition unit 11 compares and analyzes the voice frequency, timbre, etc. based on the data of the voice of the passenger obtained, obtains the voice characteristics of the passenger, and then enters step S202.

[0060] Furthermore, steps S202 and S203 are the same as steps S104 and S105 in the first embodiment and will not be elaborated here.

[0061] The specific embodiments and specific examples of the present invention have been described above with reference to the drawings. Among them, the specific embodiments and specific examples described above are only specific examples of the present invention for understanding the present invention and are not used to limit the scope of the present invention. Those skilled in the art can make various deformations, combinations, and reasonable omissions of elements based on the technical idea of the present invention, and the obtained methods are also included in the scope of the present invention. For example, the above embodiments and specific examples can be combined with each other, and the combined embodiments are also included in the scope of the present invention.

Claims

1. An in-vehicle electronic device, characterized in that, Comprising: A sound output unit that outputs a sound with set sound characteristics; A feature information acquisition unit that acquires feature information related to a passenger; A sound characteristic specification unit that specifies the sound characteristics of a passenger based on the feature information related to the passenger acquired by the above-mentioned feature information acquisition unit; A passenger number detection unit that detects the number of passengers; A similarity determination unit that, when the number of passengers detected by the above-mentioned passenger number detection unit is two or more, determines the similarity between the sound characteristics specified by the above-mentioned sound characteristic specification unit and the set sound characteristics, and A sound characteristic change unit that changes the set sound characteristics of the sound output by the above-mentioned sound output unit when the similarity determined by the above-mentioned similarity determination unit is above a specified threshold.

2. The in-vehicle electronic device according to claim 1, characterized in that, Further comprising: A passenger seat detection unit that detects the seat where a passenger is located, The above-mentioned sound characteristic specification unit specifies the sound characteristics of the passengers in each seat, When the similarity determination unit determines that the similarity between the specified sound characteristics of a passenger from a certain seat and the set sound characteristics is above the above-mentioned specified threshold, the above-mentioned sound characteristic change unit controls the above-mentioned sound output unit to change the sound characteristics of the sound output in the sound area of other seats.

3. The in-vehicle electronic device according to claim 1, characterized in that When the number of passengers detected by the above-mentioned passenger number detection unit is one, the above-mentioned sound characteristic change unit controls the above-mentioned sound output unit to output the sound with the above-mentioned set sound characteristics.

4. The in-vehicle electronic device according to claim 1 or 2, characterized in that, Further comprising: A sound characteristic storage unit that stores a variety of different sound characteristics, When the similarity determined by the above-mentioned similarity determination unit is above the above-mentioned specified threshold, the above-mentioned sound characteristic change unit selects a sound characteristic different from the sound characteristics specified by the above-mentioned sound characteristic specification unit and the above-mentioned set sound characteristics from the above-mentioned sound characteristic storage unit and outputs the sound of the above-mentioned sound output unit.

5. The in-vehicle electronic device according to claim 1 or 2, characterized in that, Further comprising: A sound characteristic conversion unit that converts to different sound characteristics, When the similarity determined by the above-mentioned similarity determination unit is above the above-mentioned specified threshold, the above-mentioned sound characteristic change unit controls the above-mentioned sound characteristic conversion unit to convert to a sound characteristic different from the sound characteristics specified by the above-mentioned sound characteristic specification unit and the above-mentioned set sound characteristics and outputs the sound of the above-mentioned sound output unit.

6. The in-vehicle electronic device according to claim 1 or 2, characterized in that, Further comprising: A sound characteristic synthesis unit that synthesizes the above-mentioned set sound characteristics.

7. An in-vehicle electronic device, characterized in that, Comprising: A sound output unit that outputs a sound with set sound characteristics; A passenger sound characteristic acquisition unit that acquires the sound characteristics of a passenger; A similarity determination unit that determines the similarity between the sound characteristics of the sound output by the above-mentioned sound output unit and the sound characteristics of the passenger acquired by the above-mentioned passenger sound characteristic acquisition unit, and A sound characteristic change unit that changes the sound characteristics of the sound output by the above-mentioned sound output unit when the similarity determined by the above-mentioned similarity determination unit is above a specified threshold.

8. A control method for sound output of an in-vehicle electronic device, characterized in that, Comprising: A feature information acquisition step of acquiring feature information related to a passenger; A sound characteristic specification step of specifying the sound characteristics of a passenger based on the feature information related to the passenger acquired by the above-mentioned feature information acquisition step; Passenger number detection step, detecting the number of passengers; Similarity determination step, when the number of passengers detected in the above passenger number detection step is two or more, determining the similarity between the voice characteristics specified in the above voice characteristic specification step and the set voice characteristics of the output voice, and Voice characteristic change step, when the similarity determined in the above similarity determination step is above a specified threshold, changing the voice characteristics of the output voice.

9. A control method for sound output of an in-vehicle electronic device, characterized in that, Including: Passenger voice characteristic acquisition step, acquiring the voice characteristics of the passenger; Similarity determination step, determining the similarity between the voice characteristics of the passenger acquired in the above passenger voice characteristic acquisition step and the set voice characteristics of the output voice, and Voice characteristic change step, when the similarity determined in the above similarity determination step is above a specified threshold, changing the voice characteristics of the output voice.

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