JPS6295593A - Voice controller for farming machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a voice control device for an agricultural machine, and can be used when the voice control device operates in a noisy environment such as that of a farm machine.

Conventional technology and the problems that the invention aims to solve Recently, due to labor shortages, there are more opportunities for workers to operate agricultural machinery alone, and workers' bodies and clothing may become entangled in machinery parts. However, in order to prevent such dangers, there are already some devices that operate and control agricultural machinery by registering and recognizing voice and using voice control devices. This has been realized. However, when these voice control devices operate, it is necessary to register and recognize the voice of the worker, that is, the speaker, and normally this voice is registered and recognized by the voice of the speaker, In machines that are used in loud noise environments, if the gain setting for voice input was done using the speaker's voice, the gain would change depending on the volume of the voice, and as the gain increases, the noise level will also increase. In many cases, it becomes difficult to register and recognize the voice.

Also, depending on the frequency, timing, etc., it may not be possible to set the gain as desired.

The present invention makes it possible to easily set the gain of voice input when registering and recognizing voice in such a voice control device in a loud noise environment.

Means for Solving the Problems The present invention provides a method for setting the gain for speech input in speech recognition processing by using an appropriate oscillation waveform in place of the speaker's speech input for voice registration number recognition. This is a feature of the configuration of a voice control device for agricultural machinery.

Functions and Effects of the Invention In a voice control device for controlling the operation of a machine using voice, especially from the aspect of accident prevention in agricultural machinery,
When performing voice recognition processing using voice input, voice registration fist recognition is normally performed using the voice of the worker, that is, the speaker, but in machines such as agricultural machines that are used in loud noise environments, voice input is required. The gain setting for voice registration and recognition changes depending on the size of the voice, and as the gain increases, the noise level also increases, making it difficult to register and recognize the voice. For example, by adjusting the level to reduce the gain by using the appropriate frequency and level value of the transmission waveform sent out from the transmission circuit, etc., the influence of noise can be suppressed even in a noisy environment, and voice recognition processing can be performed. Appropriate gain settings can be made with ease.

When performing voice recognition processing using a voice control device in such a noisy environment, the voice registration φ at the time of voice input is necessary.
By adjusting the level of the recognition gain setting so that the gain is reduced by an appropriate oscillation waveform, the gain changes depending on the loudness of the voice and reduces the influence of noise, similar to the gain setting based on the voice input of the worker, that is, the speaker. This does not impede voice registration and recognition, and voice recognition processing can be easily performed by setting an appropriate gain.

Embodiment In the illustrated example, a voice control device (1) and a microphone (2) are each provided at an arbitrary position of the working machine, and the voice control device (1) amplifies the voice input from the microphone (2). an oscillation circuit (4) that sends out an oscillation waveform such as a frequency and level value that can obtain an appropriate gain setting to suppress the noise level and facilitate voice recognition processing; A changeover switch (5) for switching the circuit (4) and the microphone amplifier (3) to the required side each time, a voice recognition unit (6) for performing voice registration Φ recognition, and the voice recognition unit (6) are each provided with an analog interface (7) as an input circuit, the microphone amplifier (3) and the oscillation circuit (4) are each connected to the changeover switch (5), and the changeover switch (5) is connected to the changeover switch (5). ) to the speech recognition unit (6) via the interface (7). Further, the microphone (2) and the microphone amplifier (3) of the audio control device (1) are connected.

Also, inside the interface (7), a gain is automatically adjusted to compensate for the magnitude of the input signal depending on the distance between the worker, that is, the speaker, and the microphone (2), and the volume of the speaker's voice. An input amplifier is provided for this purpose.

When working with agricultural machinery, it is first necessary to set the gain to perform voice recognition processing. , When performing voice input from a worker, that is, a speaker, the gain correction of the voice input is automatically adjusted by the analog interface (7), so the gain fluctuates greatly depending on the magnitude of the voice input. When the gain becomes large, the noise level also becomes large in a noisy environment, making it difficult to set an appropriate gain. (4) side, the oscillation circuit (4) sends an oscillation waveform such as an appropriate frequency and level value to the interface (7) via the changeover switch (5) instead of the audio input, and the interface (7) ), and then sends the signal to the speech recognition unit (6) to maintain a constant gain level even in a noisy environment during work, minimize the influence of noise, and set the appropriate gain. It can be performed. Thereafter, the selector switch (5) is switched to the microphone amplifier (3) side, the voice emitted by the speaker is input from the microphone (2), and the waveform of this input signal is amplified by the microphone amplifier (3). , this amplified waveform is sent to the interface (7) via the changeover switch (5), adjusted and amplified by the interface (7), and then sent to the speech recognition section (6) to obtain the above-mentioned settings. Speech recognition processing by registering and recognizing the speaker's voice can be easily performed using the gain level.

[Brief explanation of drawings]

Claims (1)

[Claims] When setting the gain of voice input in voice recognition processing,
1. A voice control device for agricultural machinery, characterized in that gain setting is performed during voice registration and recognition using an appropriate oscillation waveform in place of a speaker's voice input.