JP2010118955A - Portable cell phone terminal, voice processing method, and headset - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate distinguishing the spoken voice of a user for the person called, even in a state where the user of the device is intoxicated. <P>SOLUTION: A terminal has an alcohol detecting part 110, which detects the concentration of the alcohol contained in breath and a microphone 108, which picks up the voice in the vicinity and generates voice signals. Moreover, the terminal has a communication processing part 101, which demodulates the received radio waves, extracts voice signals therefrom, converts the input voice signals to radio waves, and transmits the radio waves. According to the alcohol concentration detected by the alcohol detecting part 110, the speed and/or tone of the voice signals obtained by the microphone 108 are converted into a slower speed and or a lower tone and are transmitted to the communication processing part 101. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mobile phone terminal, a voice processing method, and a headset, and more particularly, to a technique for changing the speed and pitch of a call voice according to the state of a user.

  In general, it is known that, for example, when the listening ability decreases with the aging of the population, the ability of the person to identify the voice of the other party also tends to decrease. For this reason, as a function to compensate for such a decrease in the spoken voice identification capability, a mobile phone terminal having a function capable of making a call while reducing the speed of the voice of the other party has appeared.

For example, Patent Document 1 describes a telephone having a function of converting a voice uttered by a partner to a slower speed in order to make it easier to understand the words spoken by the partner.
JP 2001-268175 A

  By the way, it is not only when the listening ability is lowered that the ability to identify the voice of the other party is lowered. For example, when a person is drunk, it may be difficult for a person to identify the voice of the other party. In such a case, it is difficult for a person to accurately understand what the other party speaks, and there is a risk that the conversation with the other party will not be established. However, no technology has been devised so far to compensate for the decline in the speech recognition ability of the other party in such a drunken state.

  The present invention has been made in view of this point, and an object of the present invention is to make it easier for a call partner to identify a voice of a user even when the user of the apparatus is drunk.

  The mobile phone terminal of the present invention includes an alcohol detection unit that detects the concentration of alcohol contained in exhaled breath, and a microphone that picks up surrounding sounds and generates a sound signal. In addition, the apparatus includes a communication processing unit that demodulates the received radio wave and extracts an audio signal, and converts the input audio signal into a radio wave and transmits the radio signal. Then, according to the alcohol concentration detected by the alcohol detection unit, the speed and / or pitch of the voice signal obtained by the microphone is converted into a slower speed or lower pitch and transmitted to the communication processing unit. It is a thing.

  As a result, when the alcohol component is contained in the breath of the user of the mobile phone terminal, the speed or pitch of the user's voice is slower or lower depending on the concentration. It is converted and transmitted to the communication processing unit, and transmitted to the other party through the antenna.

  According to the present invention, even if the user of the mobile phone terminal is drunk, and the speaking voice is faster or higher than usual, it is difficult to listen to the other party. It becomes easier to understand.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram illustrating an internal configuration example of the mobile phone terminal 100 according to the present embodiment. The mobile phone terminal 100 includes a control unit 120 made of a microprocessor or the like. The control unit 120 includes a control line 150 in which a control signal is transmitted or a data line 160 in which data is transmitted. Connected to each part. And the control part 120 communicates with each part through these lines, and controls operation | movement of each part.

  A communication processing unit 101, a display unit 103, an operation unit 104, a memory 105, and an audio processing unit 106 are connected to the control line 150. An antenna 102 is connected to the communication processing unit 101, and the communication processing unit 101 demodulates the radio wave obtained by the antenna 102 to extract an audio signal or receives an audio signal transmitted via the data line 160 as an electric wave. Is converted to, and output to the antenna 102.

  The display unit 103 includes a display panel constituted by a liquid crystal panel or the like and a drive unit of the display panel, and displays a telephone number of an incoming call, a text of an e-mail transmitted and received through the antenna 102, and the like. . The operation unit 104 includes dial keys such as numerals and other various function keys. When those keys are pressed by the user, an operation signal corresponding to the operation content is generated and supplied to the control unit 120.

  The memory 105 is composed of a ROM (Read Only Memory) or a RAM (Random Access Memory) (not shown), and the memory 105 stores software necessary for controlling the mobile phone terminal 100. The memory 105 also stores data that is temporarily generated when the control unit 120 performs control.

  Connected to the audio processing unit 106 are a speaker 107 that outputs an input audio signal as audio, and a microphone 108 that picks up surrounding audio and converts it into an audio signal. The audio processing unit 106 performs output processing of audio input from the speaker 107 and audio processing of audio input from the microphone 108. The audio processing unit 106 also includes an audio conversion unit 106 a that converts the speed of the audio signal received by the antenna 102 and extracted by the communication processing unit 101 or the speed of the audio signal obtained by the microphone 108 to a predetermined speed.

  For example, the voice conversion unit 106a detects the basic period of the voice signal, generates a signal of the same period, and synthesizes the generated signal with the original voice signal, thereby reducing the speech speed without changing the voice pitch. Convert to speed. The voice conversion unit 106a changes the pitch of the voice by performing an inverse Fourier transform, for example, after performing a Fourier transform on the voice signal and displacing the entire frequency. A pulse sensor 109 and an alcohol sensor 110 are connected to the voice conversion unit 106a, and conversion processing is performed by changing the conversion speed or pitch according to the detection values of these sensors. Details of this conversion processing will be described later.

  The pulse sensor 109 includes a light emitting unit and a light receiving unit (not shown), and the light receiving unit receives reflected light generated when the infrared light emitted from the light emitting unit is reflected on blood flowing in the human body. The pulse sensor 109 detects the number of pulses based on the amount of light obtained by the light receiving unit. In the present embodiment, the pulse sensor 109 including the light emitting unit and the light receiving unit is taken as an example. However, a sensor that detects the pulse by other methods may be used.

  The alcohol sensor 110 is constituted by a semiconductor gas sensor, for example, and detects the concentration of alcohol contained in exhaled breath. In the present embodiment, a semiconductor gas sensor is used as the alcohol sensor 110. However, the present invention may be applied to a sensor that detects alcohol concentration by other methods such as an electrochemical method.

  Next, with reference to the block diagram of FIG. 2, each block that performs processing until the speed or pitch of the sound is changed based on the detection results of the pulse sensor 109 and the alcohol sensor 110 will be described. The alcohol sensor 110 generates a voltage corresponding to the concentration of alcohol contained in exhaled breath and outputs the voltage to the comparator 111. The comparator 111 converts the voltage applied from the alcohol sensor 110 into a digital value and supplies it to the control unit 120 as an alcohol concentration detection value.

  The pulse sensor 109 generates a pulse corresponding to the detected pulse and outputs it to the operational amplifier 112. The pulse count by the pulse sensor 109 is performed, for example, by measuring the interval between the first pulse and the next pulse and taking the reciprocal thereof. In order to improve the accuracy of pulse rate detection, a predetermined number of beats may be detected and averaged, and the average value obtained may be used as the pulse rate. The operational amplifier 112 amplifies the pulse input from the pulse sensor 109 with a predetermined gain and outputs the amplified pulse to the comparator 113. The comparator 113 converts the pulse amplified by the operational amplifier 112 into a digital value and supplies it to the control unit 120 as a detected value of the pulse rate.

  The control unit 120 converts the detection value input from the alcohol sensor 110 and / or the pulse sensor 109 into a voice conversion control signal for changing the speed and pitch of the voice, and outputs the voice conversion control signal to the voice conversion unit 106a.

  The voice conversion unit 106a converts the speed and pitch of the voice signal input from the microphone 106 into a predetermined speed or pitch based on the voice conversion control signal input from the control unit 120, and the data line 160 (FIG. 1). To the communication processing unit 101. Further, the speed and pitch of the audio signal supplied from the communication processing unit 101 (see FIG. 1) is converted into a predetermined speed or audio and supplied to the speaker 107.

  Next, a configuration example of the mobile phone terminal 100 according to the present embodiment will be described with reference to FIG. FIG. 3 is an external view of the mobile phone terminal 100. The mobile phone terminal 100 shown in FIG. 3 has a folding shape, and FIG. 3 shows an open state.

  A speaker 107 is disposed at a portion that contacts the user's ear during a call, and a pulse sensor 109 is disposed at a position adjacent to the speaker 107. That is, the pulse sensor 109 detects the user's pulse rate by emitting infrared light to the user's ear that contacts during a call and detecting the reflected light from the ear.

  In addition, as shown in FIG. 4, you may make it provide the pulse sensor 109 in the back surface etc. of the mobile telephone terminal 100. FIG. The arrangement position is a position where the fingertip of the user during a call touches.

  Returning to FIG. 3, the description is continued. The antenna 102 is provided in the upper part of the casing in which the speaker 107 is arranged, and the display unit 103 is provided below the speaker 107.

  The other housing connected via the hinge 115 is provided with an operation unit 104 including various keys, and a microphone 108 is disposed below the operation unit 104. An alcohol sensor 110 is disposed at a position adjacent to the microphone 108. In other words, the alcohol sensor 110 is disposed at a position where the exhaled breath from the user during the call is applied, and detects the alcohol concentration contained in the exhalation of the user during the call.

  In the present embodiment, a foldable mobile phone terminal is taken as an example, but the present invention is not limited to this. For example, other forms such as a stick type in which the display unit 103 and the operation unit 104 are arranged in the same casing, and a slide type in which the display unit 103 and the operation unit 104 are arranged in the thickness direction of the casing are used. It may be applied to other mobile phone terminals.

  Next, an example of voice conversion processing by the mobile phone terminal 100 will be described with reference to the flowchart of FIG. First, when a call is started by pressing a call button (not shown) of the operation unit 104 (step S11), the alcohol sensor 110 detects the concentration of alcohol contained in the user's breath (step S12). ). As a result of the detection, it is determined whether or not alcohol is included in the user's breath (step S13). If alcohol is detected, whether or not the detected amount is less than 0.15 mg / l (liter). Determination is made (step S14).

  If the amount of alcohol detected by the alcohol sensor 110 is less than 0.15 mg / l, the voice conversion process is not performed, and the process returns to step S12 and continues. Next, it is determined whether the detected amount of alcohol is between 0.15 mg / l and 0.25 mg / l (step S15). When the detected amount of alcohol is in the range of 0.15 mg / l to 0.25 mg / l, the voice speed of the other party is converted to 0.8 times and the pitch of the user's voice is 1 The pitch is converted to a lower pitch (step S16).

  That is, the voice signal of the communication partner obtained through the antenna 102 (see FIG. 1) is converted to a speed 0.8 times by the voice conversion unit 106a and emitted from the speaker 107. Then, the pitch of the user's voice obtained by the microphone 108 is lowered to a pitch one degree lower, transmitted to the communication processing unit 101, and transmitted to the other party via the antenna 102.

  When the detected alcohol amount is not less than 0.15 mg / l, and is not within the range of 0.15 mg / l to 0.25 mg / l, that is, more than 0.25 mg / l, the speed of the other party's voice is The pitch of the user's voice is converted down by a factor of 0.7 (step S17). 0.25 mg / l is a reference value for drunk driving. That is, the higher the alcohol concentration detected by the alcohol sensor 110, the slower the speed of the voice of the other party and the lower the pitch of the user's voice.

  Next, it is determined whether or not the call has ended (step S18), and while the call continues, the process returns to step S12 to continue the process. When the call is finished, the process is also finished.

  In step S13, when alcohol is not detected by the alcohol sensor 110, counting of the user's pulse rate by the pulse sensor 109 is started (step S19). Then, it is determined whether or not a predetermined time set in advance has elapsed from the start of pulse counting (step S20), and the pulse counting process is continued while the predetermined time has not elapsed. When a predetermined time has elapsed from the start of pulse counting, the counting of the pulse rate is stopped (step S21).

  Next, it is determined whether or not the pulse rate obtained by counting is not less than 0 and less than 80 (step S22). If the pulse rate is not less than 0 and less than 80, the voice conversion process is not performed and the pulse rate is not determined. The value of the counter that counts the number is reset (step S26).

  Next, it is determined whether or not the pulse rate is 80 or more and less than 100 (step S23). If the pulse rate is 80 or more and less than 100, the speed of the user's voice is converted to 0.9 times. Then (step S24), the data is transmitted to the other party via the communication processing unit 101 and the antenna 102. If the pulse rate is not 0 or more and less than 80, but not 80 or more and less than 100, that is, 100 or more, the speed of the user's voice is converted to 0.8 times (step S25).

  After the voice conversion process is performed, the counter value is reset (step S26), and it is determined whether or not the call is finished (step S27). If the call is continuing, the process returns to step S12 and the process is continued. If the call is terminated, the process is also terminated here.

  When the pulse rate is a normal value of 0 or more and less than 80, the call is performed at the normal call speed or pitch, and when the pulse rate exceeds 80 due to the excitement state or the tension state, As the number increases, the speed of the user's voice is converted to a slower speed.

  In addition, each numerical value shown in the flowchart of FIG. 5 is an example, and implementation is not limited to these numerical values. For example, the user's pulse rate under normal conditions is registered in the memory 105 or the like, and the conversion speed and pitch are changed depending on the difference between the registered pulse rate and the measured pulse rate. Also good. In the process of FIG. 5, the detection of alcohol is performed after the detection of alcohol, but the detection of the alcohol concentration by the alcohol sensor 110 and the detection of the pulse rate by the pulse sensor 109 are performed simultaneously. May be.

  According to the above-described embodiment, when the user is drunk, the speed of the other party's voice is reproduced more slowly according to the concentration of alcohol contained in the exhalation. Thereby, even if the ability to discriminate the voice of the other party is reduced due to being drunk, the user can understand the contents spoken by the other party.

  When the user is drunk, the pitch of the user's voice is converted to a lower pitch according to the detected alcohol concentration and transmitted to the other party. As a result, even when the user is drunk and speaking at a pitch that is higher than normal and difficult to hear, the voice of the other party is converted to a lower pitch and reaches the other party. Therefore, the other party can easily understand what the user speaks.

  Furthermore, since the speed of the caller's voice is converted to a slower speed according to the number of pulse rates detected by the pulse sensor 109, the user is in an excited state or a nervous state and speaks faster than usual. Even if it is closed, the other party can easily understand the content.

  In the above-described embodiment, the configuration in which the speed and pitch of the user's voice is changed when alcohol is detected from the user's breath or the pulse rate is equal to or greater than the predetermined number is given as an example. Depending on the degree, processing for increasing the loudness of the other party may be performed.

  In the above-described embodiment, the example in which the present invention is applied to the mobile phone terminal 100 has been described. However, the present invention may be applied to a headset including the speaker 107 and the microphone 108.

  FIG. 6 is a diagram illustrating a configuration example of a headset to which the present invention is applied, and portions corresponding to those in FIG. 1 are denoted by the same reference numerals. The headset 200 shown in FIG. 6 is an ear hook type, and a pulse sensor 109 is attached to an ear hook 116 to be hung on a user's ear. Thereby, a user's pulse rate can be detected from the amount of blood flow that flows through the user's ear during a call. In order to further improve the accuracy of pulse rate detection, the pulse sensor 109 may be sandwiched between the user's ears.

  A speaker 107 is disposed in the vicinity of the ear hook 116, and the voice of the communication partner transmitted through the cable 117 is transmitted to the user. An arm that can be bent at an arbitrary angle extends from the base portion of the ear hook 116, and the microphone 106 and the alcohol sensor 110 are disposed at the tip portion thereof.

  FIG. 7 is a block diagram showing an example of the internal configuration of the headset 200, and portions corresponding to those in FIG. The headset 200 includes an audio input unit 118 that is connected to an external device (not shown) having a call function, and receives the voice of the other party transmitted through the external device. The voice conversion unit 106a converts the speed and pitch of the voice signal transmitted through the voice input unit 118 into a predetermined speed and pitch, the pulse sensor 109 outputs the detection result to the voice conversion unit 106a, and the alcohol sensor 110. With. The audio conversion unit 106a is connected to a speaker 107 that outputs audio after audio conversion and a microphone 108 that supplies an audio signal to the audio conversion unit 106a.

  The series of processes in the above-described embodiment can be executed by hardware, but can also be executed by software. When a series of processing is executed by software, it is possible to execute various functions by installing programs that make up the software into a computer built into dedicated hardware, or by installing various programs. For example, a general-purpose personal computer or the like installs and executes a program constituting desired software.

  Further, in this specification, the step of describing the program constituting the software is not limited to the processing performed in time series according to the described order, but is not necessarily performed in time series, either in parallel or individually. The process to be executed is also included.

It is a block diagram which shows the internal structural example of the mobile telephone terminal by one embodiment of this invention. It is a block diagram which shows the structural example of each block concerning the audio | voice conversion process by one embodiment of this invention. It is an external view which shows the structural example of the mobile telephone terminal by one embodiment of this invention. It is a perspective view which shows the example of the state which closed the terminal by one embodiment of this invention. It is a flowchart which shows the example of the audio | voice conversion process by one embodiment of this invention. It is an external view which shows the structural example of the headset by the other Example of this invention. It is a block diagram which shows the internal structural example of the headset by the other Example of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Mobile phone terminal 101 ... Communication processing part 102 ... Antenna 103 ... Display part 104 ... Operation part 105 ... Memory 106 ... Audio | voice processing part 106 ... Microphone 106a ... Voice conversion part 107 ... Speaker DESCRIPTION OF SYMBOLS 108 ... Microphone, 109 ... Pulse sensor, 110 ... Alcohol sensor, 111 ... Comparator, 112 ... Operational amplifier, 113 ... Comparator, 115 ... Hinge, 116 ... Ear hook, 117 ... Cable, 118 ... Audio | voice input part, 120 ... Control part, 150 ... Control line, 160 ... Data line, 200 ... Headset

Claims (7)

An alcohol detector for detecting the concentration of alcohol contained in exhaled breath;
A microphone that picks up the surrounding sound and generates a sound signal;
A communication processing unit that demodulates the received radio wave and extracts an audio signal, converts the input audio signal into a radio wave, and transmits the radio signal;
Depending on the alcohol concentration detected by the alcohol detection unit, the speed and / or pitch of the audio signal obtained by the microphone is converted to a slower speed or lower pitch and transmitted to the communication processing unit. A mobile phone terminal equipped with a voice converter. It has a pulse detector that detects the user's pulse,
The mobile phone terminal according to claim 1, wherein the voice conversion unit converts the speed of the voice signal extracted by the communication processing unit to a slower speed according to the number of pulses detected by the pulse detection unit. A speaker that outputs the voice signal processed by the voice converter as voice;
The voice conversion unit has a slower speed of the voice signal extracted by the communication processing unit in accordance with the alcohol concentration detected by the alcohol detection unit and / or the number of pulses detected by the pulse detection unit. The mobile phone terminal according to claim 2, wherein the mobile phone terminal is converted into a speed and output to the speaker. The voice conversion unit increases the volume of the voice signal extracted by the communication processing unit according to the alcohol concentration detected by the alcohol detection unit and / or the number of pulses detected by the pulse detection unit. The mobile phone terminal according to claim 3, wherein the mobile phone terminal is converted into a volume. The mobile phone terminal according to claim 3, wherein the alcohol detection unit is disposed in the vicinity of the speaker, and the pulse detection unit is disposed in the vicinity of the microphone. Detecting the concentration of alcohol contained in exhaled breath;
Picking up surrounding sounds and generating an audio signal;
Converting the speed of the extracted audio signal to a slower speed in response to the detected alcohol concentration;
Converting the speed-converted audio signal into a radio wave and transmitting the radio signal. An alcohol detector for detecting the concentration of alcohol contained in exhaled breath;
A microphone that picks up the surrounding sound and generates a sound signal;
An audio input unit to which an audio signal is input;
A voice conversion unit that converts the speed and / or pitch of the voice signal input to the voice input unit into a slower speed or a lower pitch according to the alcohol concentration detected by the alcohol detection unit;
A headset comprising: a speaker that outputs an audio signal whose speed is converted by the audio conversion unit as audio.

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