JP2000081895A - Guiding display of speech recognition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guiding display of a speech recognition device allowing a speech instruction to be exactly and easily inputted to a speech recognition device for on-vehicle equipment. SOLUTION: This speech recognition device for on-vehicle equipment is provided with a sound analyzer part 2 for analyzing the waveform of a sound signal inputted from a microphone 1, a recognition processing part 3 to calculate similarity of the input pattern of the sound obtained by the sound analyzing part 2 to pre-stored standard patterns and output a recognition result, and a system control part 5 to receive the recognition result from the recognition processing part 3 and control and drive the functions of the on-vehicle equipment indicated by the sound instruction. Characters showing the sound instruction for operating the on-vehicle equipment are provided above an operating switch button or in the neighborhood thereof. Looking at the characters, a user can easily issues an sound instruction by providing the characters showing the sound instruction in the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guidance display device of a voice recognition device used in a vehicle-mounted device of an automobile.

[0002]

2. Description of the Related Art For example, information devices such as a navigation system and a car telephone have rapidly spread in the field of vehicle-mounted devices. Such advanced information devices bring great convenience to users, There is a case where a danger at the time of traveling is generated due to the complexity of the operation and the difficulty of operating the device at the time of traveling.

[0003]

Therefore, in recent years, in a vehicle-mounted device such as a navigation system and a car telephone,
The use of voice recognition devices is attracting attention, and the use of voice recognition devices in this kind of in-vehicle equipment allows the driver to issue a voice command while driving, that is, at the same time as using the hands and eyes. Development of a device that enables easy operation of in-vehicle devices has been promoted.

[0004] However, even with such a speech recognition device having great convenience, a navigation system,
When a voice recognition device is used in various in-vehicle devices such as an air conditioning system and an audio system in addition to a car phone,
When using individual in-vehicle devices, there is a case where it is difficult to know what should be given by voice, and the user needs to memorize a large number of voice commands (command words). If the user does not remember correctly, there is a problem that an input error of the voice command occurs or the voice command cannot be performed.

The present invention has been made in view of the above points, and provides a guidance display device of a voice recognition device capable of accurately and easily inputting a voice command to a voice recognition device of a vehicle-mounted device. With the goal.

[0006]

In order to achieve the above object, a guidance display device according to the present invention comprises a sound analysis unit for analyzing a waveform of a sound signal input from a microphone, and a sound obtained by the sound analysis unit. A recognition processing unit that calculates the similarity between the input pattern and the pre-stored standard pattern and outputs a recognition result; receives the recognition result from the recognition processing unit and controls the functions of the vehicle-mounted device indicated by the voice command. A voice recognition device for an in-vehicle device including a system control unit to be driven, wherein a character indicating a voice command for operating the in-vehicle device is attached to a part of the interior of the vehicle.

Here, the "character indicating a voice command" includes not only phonetic and ideographic characters such as hiragana and katakana which directly indicate a voice command, but also includes numbers and symbols indicating the characters indirectly. In addition, the location in the vehicle to which the character is attached may be, for example, a location on or near the operation switch button, or a location on the operation unit of the device, where the user tends to look when using the device. In addition to the characters, a color indicating the voice command may be provided on or near the operation switch button. In addition, the operation switch button means a member that performs a pressing operation and a contact operation for a switch operation,
It includes a panel switch such as a touch panel.

[0008]

In the guidance display device of the voice recognition device having such a configuration, when there is an in-vehicle device to be made to function, the user can use a part of the vehicle, for example, on the switch button for operating the device or on the device. A voice command for operating the device can be issued by looking at the characters and colors attached to the vicinity. Therefore,
Even when there are many in-vehicle devices equipped with a voice recognition device, the user does not need to memorize a large number of voice commands (voice commands). Since the user only has to speak the command, the voice command can be easily issued.

A voice command issued by a user is input to a microphone, and a voice signal output therefrom is amplified, converted to a digital signal through an A / D converter, and input to an acoustic analysis unit. The acoustic analysis unit performs a linear prediction analysis or the like on the audio data, and converts the audio data into time-series data (input pattern) of a feature amount such as a short-time spectrum of an audio waveform included therein.

[0010] The input pattern is sent to the recognition processing section, where it is compared with a standard pattern stored in advance, its similarity is calculated, and the pattern with the highest similarity is output as a recognition result. The system control unit that has received the recognition result from the recognition processing unit performs drive control of the in-vehicle device indicated by the recognition result, that is, the voice command, to operate the in-vehicle device.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram showing a schematic configuration of a voice recognition device for a vehicle-mounted device. The voice recognition device includes a microphone 1 for inputting voice of a voice command.
A sound analysis unit 2 that analyzes a waveform of a sound signal input from a microphone 1, a recognition unit that calculates a similarity between an input pattern of a sound obtained by the sound analysis unit 2 and a standard pattern, and outputs a recognition result. The processing unit 3, a standard pattern storage unit 4 that stores a standard pattern in advance, and a system control unit 5 that receives a recognition result from the recognition processing unit 3 and controls and drives the function of the vehicle-mounted device indicated by the voice command. It is configured with.

Here, the acoustic analysis unit 2, the recognition processing unit 3, the standard pattern storage unit 4, and the system control unit 5 are specifically constituted by a microcomputer as a main part.

The acoustic analysis unit 2 amplifies an input audio signal, converts the signal into a digital signal through an A / D converter, and analyzes the audio data. Specifically, a linear prediction analysis or the like of voice data is performed, and time-series data (input pattern) of a feature amount such as a short-time spectrum of a voice waveform included therein.
And outputs it to the recognition processing unit 3.

The recognition processing unit 3 reads and compares the input pattern sent from the acoustic analysis unit 2 with the standard pattern stored in the standard pattern storage unit 4 in advance, and determines the similarity between the input pattern and the standard pattern. calculate. The pattern with the highest similarity is output as the recognition result. The standard pattern storage unit 4 creates and stores a standard pattern corresponding to an unspecified speaker from voice data of many speakers.

The system control unit 5 inputs the recognition result sent from the recognition processing unit 3 and, based on the recognition result, the air conditioning system 6 and the audio system 7
And so on so as to perform the function indicated by the voice command.

FIGS. 2 to 5 are partial front views of the operation panels 10, 20, 30, and 35 of the air conditioning system 6. FIG. The operation panel 10 shown in FIG. 2 is provided with an operation switch button for selecting an air blowing unit for air conditioning. The switch button is composed of a normal operation switch or a panel switch. Here, a face switch 11 in which air for air conditioning faces the occupant's face, a bi-label switch 12 in which air for air conditioning faces the occupant's face and feet, and an air conditioning switch A foot switch 13 that directs air toward the occupant's feet and a differential / foot switch 14 that directs air for air conditioning toward the occupant's feet and windows are provided.

The switches 11 to 14 are provided with characters "face", "bi-label", "foot", and "diff / foot" indicating voice commands for operation near the switch buttons. I have.

The operation panel 20 shown in FIG. 3 is provided with an operation switch button for selecting the air flow rate of the air conditioner. Switch 23,
A switch 24 and a switch 25 are provided. Each of the switches 21 to 25 has a character "air flow 1" indicating a voice command for the operation on the switch button.
“Air volume 2”, “air volume 3”, “air volume 4”, and “air volume 5” are added.

The operation panel 30 shown in FIG. 4 includes a switch 31 for turning on and off the air conditioner defroster, a switch 32 for switching between inside air and outside air, a switch 33 for turning off air conditioning, and a switch 33 for turning on air conditioning. Switch 34
Is provided. Each of the switches 31 to 34 is provided with characters "Diff", "inside / outside air", "air conditioner off", and "air conditioner auto" indicating a voice command for the operation in the vicinity of the switch button. Further, a switch 36 for increasing or decreasing the temperature of the air conditioning is provided on the operation panel 35 of FIG. Characters “Temperature up” and “Temperature down” indicating voice commands for the operation are provided near the switch 36.

The above-mentioned switch button is a concept including a panel switch such as a touch panel in addition to a normal switch button. In addition, the characters attached on or near the switch are printed directly on the switch or on the operation panel,
Alternatively, a printed template can be attached, or a printed template can be attached to the operation panel 10, 20, 30, or the like.

When using the air-conditioning system 6 of the in-vehicle equipment provided with such a voice recognition device, the user first looks at the character attached near the switch 34 for activating the air-conditioning system 6, Give a command by voice saying "Air conditioner auto". Since the voice command "air conditioner auto" is given near the switch 34, the user does not need to remember the voice command (voice command). Therefore, it is possible to easily issue a voice command.

The voice command "air conditioner auto" issued by the user is input to the microphone 1, and the voice signal output therefrom is amplified and converted into a digital signal through an A / D converter, and the sound analysis unit 2 is input. The acoustic analysis unit 2 performs a linear prediction analysis or the like on the audio data, and extracts time-series data (input pattern) of a feature amount such as a short-time spectrum of the audio waveform included therein.

This input pattern is sent to the recognition processing unit 3, where it is compared with a standard pattern stored in advance in the standard pattern storage unit 4, and its similarity is calculated. Then, the pattern having the highest similarity is output to the system control unit 5 as a recognition result. The system control unit 5 having received the recognition result from the recognition processing unit 3 controls the activation of the air conditioning system 6 indicated by the recognition result, that is, “air conditioner auto”, and operates the air conditioning system 6.

Further, if the user has a function to be operated in the air conditioning system 6, the user can easily issue a voice command by looking at the characters attached on or near the operation switch as described above. For example, to change the air volume of the air conditioner, a voice command such as “air volume 3” or “air volume 4” is issued,
If you want to change the air-conditioning blowing mode,
If you issue a voice command such as "foot" to raise the temperature,
Issues a voice command for "temperature up". With the input of the voice command, the recognition processing unit 3 of the voice recognition device recognizes the voice command as described above, and the operation of the system control unit 5 causes the air conditioning system 6 to output the air volume, the air blowing, the temperature, and the like. Control as you do.

FIG. 6 shows another embodiment of an operation panel for selecting an air blowing section for air conditioning. In this example,
On the operation panel 40, switches 41 to 44 are arranged side by side to select an air blower for air conditioning, and under the switches 41 to 44, letters "face" and "bi-label" indicating voice commands for the operation are provided. Numbers 1 to 4 are assigned instead of “foot” and “diff / foot”.

In this case, the voice commands for operation are numbered 1 to 4. For example, when the air-conditioning blow-out mode is set to the face mode, when the voice command of "air conditioner 1" is set to the bi-label mode, "air conditioner 2" is set. Is given to control the air conditioning system 6.

When the operation panel 45 for selecting the air blowing section of the air conditioning is provided with one mode changeover switch 46 as shown in FIG. Numbers 1 to 4 may be assigned near the switch 46 near the display unit for displaying the switching position when the mode is switched.

FIG. 8 shows an audio switch display screen of the multi-display 50 in the audio system 7. On the screen of this multi-display 50,
A transparent panel switch is provided, and the panel switch at the position of the displayed switch image has a function shown on the switch screen.

Similarly to the above, on the audio switch display screen of the multi-display 50, as a character indicating a voice command for the operation, 1 near the switch image, 2 for the TV switch, and 2 for the CD switch. , T
Numbers 1 to 12, such as 3, are assigned to the switches for APE in the vicinity of those switches.

The user can, for example, use the audio system 7
When the user wants to listen to the CD, a command is given by voice "audio 2". At this time, since the voice command “Audio 2” is given near the switch image,
Even if the user does not remember the voice command (voice command), the user can easily issue the voice command by looking at the vicinity of the switch image.

When the audio signal of "audio 2" is input to the voice recognition device, the recognition processing unit 3 recognizes the voice command as described above, and the system control unit 5 operates
The audio system 7 is controlled to put the CD into a play state.

FIG. 9 shows still another embodiment. The in-vehicle devices operated here are a window glass elevating device and a hazard device. Characters indicating a voice command for operating the window glass elevating device by a voice command are attached inside the window glass. A voice command character for operating the hazard device by a voice command is attached inside the lower corner of the windshield. As described above, when the in-vehicle device is a window glass elevating device or a hazard device, a voice command character may be attached to a portion such as an operating portion where the eyes are easily turned.

The present invention is not limited to the above embodiment, but can be implemented in the following embodiments.

In addition to the characters, the color indicating the voice command is
It can be attached to or near the operation switch button, and the color can be issued as a voice command.For example, when the face of the blowing mode of the air conditioning system is red,
The switch button for the face is colored red, and the air-conditioning blow-out can be controlled using a voice command such as "air conditioner red".

The guidance display device of the voice recognition device of the present invention can be applied to various on-vehicle devices such as a navigation system and a car telephone device in addition to the air conditioning system 6 and the audio system 7 of the above embodiment.

[Brief description of the drawings]

FIG. 1 is a schematic functional block diagram of a speech recognition device according to an embodiment of the present invention.

FIG. 2 is a partial front view of an operation panel 10 of the air conditioning system 6.

FIG. 3 is a partial front view of an operation panel 20 of the air conditioning system 6.

FIG. 4 is a partial front view of an operation panel 30 of the air conditioning system 6.

5 is a partial front view of an operation panel 35 of the air conditioning system 6. FIG.

FIG. 6 shows an operation panel 40 of an air conditioning system 6 according to another embodiment.
FIG.

FIG. 7 shows an operation panel 45 of an air conditioning system 6 according to another embodiment.
FIG.

FIG. 8 is a partial front view of a multi-display 50 in an audio system 7 of another embodiment.

FIG. 9 is a perspective view of the interior of an automobile showing another embodiment.

[Explanation of symbols]

 1-microphone 2-acoustic analysis unit 3-recognition processing unit 4-standard pattern storage unit 5-system control unit 10-operation panel 11-face switch 12-bi-label switch 13-foot switch 14-diff / foot switch

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // G08G 1/0968 G08G 1/0968

Claims (2)

[Claims] An acoustic analysis unit for analyzing a waveform of an audio signal input from a microphone, and a similarity between an input pattern of the audio obtained by the audio analysis unit and a standard pattern stored in advance is recognized. A recognition processing unit that outputs a result,
A system control unit that receives and recognizes a recognition result from the recognition processing unit and controls and drives a function of the vehicle-mounted device indicated by the voice command. A guidance display device for a voice recognition device, wherein a character indicating a command is attached to a part of a vehicle. 2. An acoustic analysis unit for analyzing a waveform of an audio signal input from a microphone, and a similarity between an input pattern of the audio obtained by the acoustic analysis unit and a previously stored standard pattern is calculated and recognized. A recognition processing unit that outputs a result,
A system control unit that receives and recognizes a recognition result from the recognition processing unit and controls and drives a function of the vehicle-mounted device indicated by the voice command. A guidance display device for a voice recognition device, wherein a color indicating a command is attached to a part of a vehicle interior.