WO2005120177A2 - Dispositif de communication audio - Google Patents

Dispositif de communication audio Download PDF

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Publication number
WO2005120177A2
WO2005120177A2 PCT/JP2005/008775 JP2005008775W WO2005120177A2 WO 2005120177 A2 WO2005120177 A2 WO 2005120177A2 JP 2005008775 W JP2005008775 W JP 2005008775W WO 2005120177 A2 WO2005120177 A2 WO 2005120177A2
Authority
WO
WIPO (PCT)
Prior art keywords
microphone
volume
sound
communication device
voice
Prior art date
Application number
PCT/JP2005/008775
Other languages
English (en)
Japanese (ja)
Other versions
WO2005120177A3 (fr
Inventor
Satoru Makino
Original Assignee
Brother Kogyo Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brother Kogyo Kabushiki Kaisha filed Critical Brother Kogyo Kabushiki Kaisha
Publication of WO2005120177A2 publication Critical patent/WO2005120177A2/fr
Publication of WO2005120177A3 publication Critical patent/WO2005120177A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/22—Details of telephonic subscriber devices including a touch pad, a touch sensor or a touch detector

Definitions

  • the present invention relates to a voice communication device that performs voice communication with a communication partner, and more particularly, to a voice communication device that allows a user to adjust a call voice by a natural operation.
  • the volume level of the own transmitted voice output from the speaker is increased, and the user naturally lowers the transmitted voice level.
  • the telephone power of the transmitting party is such that a transmitting voice with an increased volume level is output (for example, see Patent Document 1).
  • Patent document 1 Japanese Patent Application Laid-Open No. 10-276247
  • the present invention has been made to solve the above-mentioned problem, and a secret mode (secret mode) suitable for a low-volume call is automatically set according to a user's call state.
  • a voice communication device that allows the user during a call to adjust The purpose is to provide.
  • a voice communication device includes a microphone that receives a voice and converts the voice signal into a voice signal, and a microphone that is provided with the microphone and allows a user to hold and talk.
  • an audio communication device including a handset for performing the operation, an audio determination unit that determines whether or not the audio signal needs to be adjusted, and a determination that the audio signal needs to be adjusted by the audio determination unit. Audio adjustment means for adjusting the audio signal when the adjustment is made.
  • the voice determining means detects a confidential operation for detecting that the lower portion of the handset is covered. Means.
  • the confidential operation detecting means is provided at a lower portion of the handset to allow an external connection.
  • a first touch sensor that outputs a detection signal in response to a touch; and a covering determination unit that determines whether or not a lower portion of the handset is covered based on the detection signal of the first touch sensor force. I have.
  • the microphone is provided at a lower portion of the handset, and the first touch sensor is connected to the handset. It is characterized by being provided near the microphone.
  • the secret operation detecting means is provided on a side surface of the handset, and is provided with an external communication device.
  • a second touch sensor that outputs a detection signal in accordance with the contact; and the covering determination unit determines whether or not the lower part of the handset is covered based on the detection signals of the first touch sensor and the second touch sensor. It is characterized by doing.
  • an adjustment instructing means for a user to instruct the adjustment of the audio signal in addition to the configuration of the second aspect of the present invention, in addition to the configuration of the second aspect of the present invention, an adjustment instructing means for a user to instruct the adjustment of the audio signal.
  • a step is provided, wherein the audio adjustment unit adjusts the audio signal according to information from the adjustment instruction unit.
  • the adjustment instructing means is provided at a lower portion of the handset to receive external light. It is a photosensor that outputs a detection signal in response.
  • the photo sensor is provided when the user holds the handset during a call. It is characterized in that it is provided on the surface facing the user's face in the handset.
  • the audio adjustment unit may be configured to adjust the sensitivity of the microphone according to information from the adjustment instruction unit. Is changed stepwise.
  • the audio adjustment unit may be configured to control the audio communication from the microphone in accordance with information from the adjustment instruction unit. Is characterized by changing the amplification factor of the audio signal stepwise.
  • the audio adjustment unit may be configured to control the audio communication from the microphone in accordance with information from the adjustment instruction unit. Wherein the waveform of the audio signal is corrected.
  • the voice determination means may include a speaker provided in the handset for transmitting a call from a communication partner.
  • Speaker output determining means for determining whether or not the force is being output; and the sound adjusting means includes sound volume measuring means for measuring a sound volume from the microphone in accordance with the determination by the speaker output determining means; The sound volume adjusting means adjusts the sound volume according to the measured value of the sound volume measuring means.
  • the audio adjustment unit has a volume measurement unit that measures a volume from the microphone.
  • the voice communication device includes a volume history storage unit that stores the volume measured by the volume measurement unit as volume value history data, and the volume adjustment unit includes a volume value history stored in the volume history storage unit. It is characterized in that the volume is adjusted according to the data.
  • a voice communication device is the voice communication device according to the first aspect of the present invention, wherein the voice communication device includes an external microphone for environmental sound that detects ambient environmental sound,
  • the sound adjustment means includes a sound volume measurement means for measuring a sound volume obtained by removing a sound volume from the external microphone for environmental sound as noise as a sound volume from the microphone, and the sound volume adjustment means includes a sound volume measurement means for measuring sound volume of the sound volume measurement means. The volume is adjusted according to the value.
  • the audio adjustment unit acquires a set level of a speaker provided in the handset, Transmission data creating means for creating transmission data in which the set level is superimposed on data, wherein the voice determination means has setting level separation means for separating a speaker setting level from transmission data from the other party; The adjusting means adjusts the volume according to the set level separated by the set level separating means.
  • the audio adjustment means changes the sensitivity of the microphone in a stepwise manner. It is characterized in that the volume is adjusted by causing the sound to be adjusted.
  • the audio adjustment means includes an amplification factor of an audio signal from the microphone.
  • the sound volume is adjusted by changing stepwise.
  • the audio adjustment means may further include a waveform of an audio signal from the microphone. It is characterized in that the sound volume is adjusted by correcting.
  • the voice communication device in addition to the configuration of the first aspect, is a portable terminal device in which the handset forms a housing of the voice communication device. It is characterized by being.
  • the voice determination unit needs to adjust the voice. Since it is determined whether or not the sound is correct, the sound adjusting means automatically adjusts the sound, so that the sound can be adjusted to an appropriate volume without requiring a complicated operation or the like.
  • the voice determining means is a secret-sound motion detecting means. The audio signal is automatically adjusted, and the user can adjust the audio signal with natural movement.
  • the secrecy operation detecting means is provided by a detection signal from a first touch sensor provided at a lower portion of the handset. Since it is determined whether the lower part of the handset is covered or not, it is possible to accurately detect that the lower part of the handset is covered.
  • the microphone is provided at the lower part of the handset, and the first touch sensor is provided near the microphone.
  • the user covers the lower part of the handset provided with the microphone, so the user can adjust the voice signal by a natural operation of covering the lower part of the handset.
  • the second touch sensor provided on the side surface of the handset includes the first touch sensor and the second touch sensor. 2 Based on the detection signal from the touch sensor, it is determined whether the lower part of the handset is covered or not. Therefore, in a call state, the hand of the user holding the voice communication device contacts the second touch sensor provided on the side surface of the handset, so it is necessary to accurately detect that the lower part of the handset is covered during the call. Can be.
  • an adjustment instructing means for a user to instruct adjustment of an audio signal in addition to the effect of the invention described in any one of claims 2 to 5, an adjustment instructing means for a user to instruct adjustment of an audio signal.
  • the degree of coverage of the lower part of the handset can be ascertained by the information of the adjustment instruction means, and the audio signal can be adjusted according to the degree.
  • the adjustment instruction means is provided at a lower portion of the handset and detects a detection signal in response to external light.
  • a photo sensor for output was used. Therefore, the user can instruct the adjustment of the audio signal by a natural operation of covering the lower part of the handset, and can grasp the extent to which the lower part of the handset is covered by the detection signal of the photo sensor force.
  • the voice communication device according to the invention according to claim 8 in addition to the effect of the invention according to claim 6, when the user holds the handset during a call, the user's face in the handset is A photo sensor was provided on the surface to be turned. Therefore, since the photo sensor is provided at a position where the user can easily cover the photo signal, the user can adjust the voice signal by a natural operation.
  • the sensitivity of the microphone is changed stepwise according to the information from the adjustment instruction means.
  • the optimal audio signal can be adjusted according to the degree to which the lower part of the handset is covered
  • the amplification factor of the audio signal from the microphone is increased stepwise according to the information of the adjustment instruction means. Therefore, the audio signal can be adjusted to the optimal one according to the degree to which the lower part of the handset is covered.
  • the waveform of the audio signal from the microphone is corrected according to the information of the adjustment instruction means. Therefore, it is possible to adjust the optimal audio signal according to the degree to which the lower part of the handset is covered.
  • the speaker output determination means determines whether or not there is an output from the speaker, and determines a volume according to the determination result. Since the measuring means measures the volume, the volume can be measured more accurately, and the volume can be adjusted appropriately.
  • the measured volume is held as volume value history data, and the stored volume value history data is stored. Since the volume is adjusted according to, the volume can be adjusted according to the characteristics of the user's voice.
  • a volume obtained by removing the sound of the external microphone power for environmental sound as noise is used as a volume from the microphone. Measures and adjusts the volume according to the measured value. The measurement can be performed more accurately, and the volume can be adjusted accurately.
  • the voice communication apparatus according to the invention according to claim 15 has the effect of the invention according to claim 1, and furthermore, creates transmission data in which voice data is superimposed with a set level of a speaker provided in a handset. Since the volume is adjusted according to the set level of the speaker that is transmitted and superimposed on the transmission data of the other party, the sound can be reproduced at a more appropriate volume.
  • the audio communication device performs the sound volume adjustment by changing the sensitivity of the microphone in a stepwise manner, in addition to the effect of the invention described in any of the twelfth to fifteenth aspects. Therefore, it is possible to adjust to an optimal audio signal according to the measured volume.
  • the voice communication device provides the voice communication device according to any one of the twelfth to twelfth aspects, by changing the amplification factor of the microphone-powered audio signal stepwise. Since the sound volume is adjusted, the sound signal can be adjusted to an optimum one according to the measured sound volume.
  • the audio communication apparatus performs the sound volume adjustment by correcting the waveform of the audio signal of the microphone power, in addition to the effect of the invention described in any of the twelfth to fifteenth aspects. Therefore, it is possible to adjust to an optimal audio signal according to the measured volume.
  • the voice communication device has the effect of the invention described in the first aspect, and furthermore, the voice communication device is a portable terminal device in which a handset forms a housing. It can be implemented as a voice communication device that itself forms an integral housing.
  • FIG. 1 is a view showing a user who uses the telephone 1 to make a call.
  • FIG. 2 is an external perspective view showing a physical configuration of the telephone 1.
  • FIG. 3 is a block diagram showing an electrical configuration of the telephone 1.
  • FIG. 4 is a main flowchart of a call mode control process.
  • FIG. 5 is a flowchart showing details of a call mode determination process (S1).
  • FIG. 6 is a flowchart showing details of a microphone sensitivity change process (S7).
  • FIG. 7 is a diagram showing a configuration of a microphone sensitivity setting table 70.
  • FIG. 8 is a main flowchart of a call mode control process in the second embodiment.
  • FIG. 9 is a main flowchart of a call mode control process in the third embodiment.
  • FIG. 10 is a block diagram showing an electrical configuration of a telephone set 100 according to a fourth embodiment.
  • FIG. 11 is a main flowchart of a sound adjustment process in the fourth embodiment.
  • FIG. 12 is a flowchart showing details of a microphone-powered sound volume measurement process (S201).
  • FIG. 13 is a flowchart showing details of a microphone sensitivity change process (S204).
  • FIG. 14 is a diagram showing a configuration of a microphone sensitivity setting table 240.
  • FIG. 15 is a main flowchart of audio adjustment processing in a fifth embodiment.
  • FIG. 16 is a flowchart showing details of a volume analysis process (S252).
  • FIG. 17 is a block diagram showing an electrical configuration of a telephone 270 according to a sixth embodiment.
  • FIG. 18 is a flowchart showing details of a process of measuring a sound volume from a microphone in the sixth embodiment.
  • FIG. 19 is a diagram showing a communication system 300 according to a seventh embodiment.
  • FIG. 20 is a flowchart showing a transmission process in a seventh embodiment.
  • FIG. 21 is a flowchart showing a receiving process in a seventh embodiment.
  • FIG. 22 is a main flowchart of a sound adjustment process in a seventh embodiment.
  • FIG. 23 is a flowchart showing details of a microphone sensitivity change process (S332).
  • FIG. 24 is a diagram showing a configuration of a microphone sensitivity setting table 360.
  • the audio communication device is a mobile phone for allowing a user and a communication partner to communicate by wireless communication.
  • FIG. 1 is a diagram showing a user who uses the telephone 1 to make a call.
  • FIG. 2 is an external perspective view showing a physical configuration of the telephone 1.
  • FIG. 3 is a block diagram showing an electrical configuration of the telephone 1.
  • telephone 1 is carried by a user, and normally, the user holds telephone 1 in one hand, places speaker 3 in one ear, and faces microphone 6. Talk with the other party at normal voice volume (hereinafter referred to as normal call).
  • normal call normal voice volume
  • the telephone 1 is set to “normal mode” as described later, A call with a normal volume is performed between the user and the other party.
  • microphone 6 when calling back to the surrounding people or when making a secret talk so that only the other party can hear, Do not hold the phone 1 and cover the vicinity of the mouth (microphone 6) with your hand!
  • the microphone 6 is easy to pick up sound.
  • ⁇ ⁇ ⁇ Make a call with a small voice (hereinafter referred to as confidential call).
  • the telephone 1 In a call state, the telephone 1 is set to the “hidden mode” as described later, and is controlled so that the sensitivity of the microphone 6 is increased. Then, the volume level of the user's voice collected from the microphone 6 is adjusted, and a call is performed between the user and the other party.
  • a housing 2 of the telephone 1 is provided with a speaker 3 for outputting the voice of the other party at the upper front part thereof, and a telephone number and a menu screen are provided below the speaker 3.
  • a display unit 5 which is a liquid crystal display (LCD) for displaying such information.
  • an operation unit 4 provided with a plurality of buttons and switches for performing various operations such as inputting a telephone number, receiving a call (closing a telephone line), disconnecting (opening a telephone line), and the like.
  • a microphone 6 is provided below the operation unit 4 for inputting a user's voice and converting it into a voice signal.
  • the telephone 1 is provided with the display unit 5 and the operation unit 4 in the two housings 2, the speaker 3 and the microphone 6. Note that the telephone 1 is connected to a telephone line (not shown) by wireless communication via an antenna 7 provided on an upper portion of the housing 2 to perform a voice call with the other party.
  • the housing 2 of the telephone 1 is provided with a plurality of contact sensors for detecting contact with the body part of the user, and the first touch sensor is provided on the bottom of the housing 2.
  • the second touch sensor 30 is provided on the side surface of the housing 2.
  • the first touch sensor 20 can be used to cover the vicinity of the mouth (microphone 6) with the hand that does not hold the telephone 1 when the user talks in the ⁇ secret mode '' so that the hand contacts the first touch sensor 20. It is located in Further, the second touch sensor 30 is provided so that the hand of the user holding the telephone 1 of the user during a call contacts the user.
  • a photo sensor 40 is provided in the lower part of the front surface of the housing 2 of the telephone 1 and near the microphone 6 to detect nearby obstacles in a non-contact manner by reflecting light. If the user covers the vicinity of the mouth (microphone 6) with the hand that does not hold the telephone 1 when the user talks in the ⁇ hidden mode '' when the user talks in the ⁇ hidden It has become so.
  • the electrical configuration of the telephone 1 will be described. As shown in FIG. 3, in the telephone 1, a CPU 10, a ROM 12, a RAM 13, a communication unit 14, an audio signal processing unit 15, and an input / output IZ019 are connected to each other via a bus 11.
  • the CPU 10 controls each unit connected by the bus 11, and executes a call process, a data communication process, and the like.
  • the ROM 12 is a non-rewritable memory that stores various programs executed by the telephone 1, fixed value data, and the like.
  • the call mode control program is also stored in a program storage area (not shown) on the ROM 12.
  • the RAM 13 is a memory for temporarily storing various data when each process of the telephone 1 is executed.
  • the RAM 13 has, for example, a microphone sensitivity setting value indicating an input sensitivity of the microphone 6 and a memory of the speaker 3. The set value of the volume and the like are stored.
  • flag information indicating the call mode of the telephone 1 is also stored in the RAM 13, and the call mode indicating “normal mode” is set to “ON” in a default state.
  • the call mode is “ON”, it indicates that the call mode indicating “secret mode” is “OFF”.
  • the call mode is “OF FJ”, “secret mode” is “ON”. ".
  • the communication unit 14 is a network control unit (NCU) for performing line control, and is connected to a telephone line (not shown) by wireless communication via the antenna 7.
  • the communication unit 14 receives a call signal transmitted from Koura (not shown), a telephone number (caller number) of the calling device, and the like, and transmits a call according to an operation of the operation unit 4.
  • the dialing signal is transmitted to an exchange (not shown), and an analog voice signal is transmitted and received during a call.
  • the audio signal processing unit 15 encodes the audio signal input from the microphone 6 and transmits the encoded audio signal to the other party via the communication unit 14 or the audio signal of the other party obtained via the communication unit 14. It performs processing related to audio signals, such as decoding and outputting to the speaker 3.
  • the input / output IZ019 is connected to the above-described operation unit 4, display unit 5, first touch sensor 20, second touch sensor 30, and photo sensor 40, and various input / output signals are transmitted inside the telephone 1. It is configured to be communicable! Puru.
  • FIG. 4 is a main flowchart of the call mode control process.
  • Figure 5 shows the call mode determination process.
  • 6 is a flowchart showing details of a process (SI).
  • FIG. 6 is a flowchart showing details of the microphone sensitivity change processing (S7).
  • FIG. 7 is a diagram showing a configuration of the microphone sensitivity setting table 70.
  • the main flowchart of the call mode control process (FIG. 4) is executed while the user is using the telephone 1 during a call. That is, in the telephone 1, when an incoming or outgoing call is made, a call mode control process is started, the process is continuously executed during a call, and the process is ended when the call ends.
  • a call mode determination process (S1) is executed.
  • the call mode determination process determines the current user status based on information on various sensor powers provided in the telephone 1, and determines whether the user is in the normal mode for normal calls or the secret mode for secret calls. This is a process of determining whether a deviation should be set.
  • a brightness measurement value (LUX) from the photo sensor 40 is obtained (S21), and the measurement value (LUX) obtained in S21 is obtained. Is determined to be equal to or less than the standard threshold value (S23).
  • the photo sensor 40 can acquire 0 to: LOOO lux as a measurement value (LUX), and the standard threshold value which is a reference value for determining the call mode is 192 lux.
  • the standard threshold a value slightly darker than the average illuminance at the level of daily life is preferable.
  • the brightness of the dining room-bathroom / lavatory / toilet etc. is about 200 lux. Therefore, in this embodiment, 192 lux is set as the standard threshold value for detecting the state of being covered with hands.
  • the first touch sensor 20 is “ON” (S25).
  • the second touch sensor 30 is “ON” (S27). If the second touch sensor 30 is "ON” (S27: YES), the flag information for turning “ON” the call mode "secret mode” is set in a predetermined storage area of the RAM 13 (S29).
  • the RAM 13 is referred to and it is determined whether or not “hidden / hidden mode” is “ON” (S3).
  • S3 When the “hidden mode” is “ON” (S3: YES), a microphone sensitivity change process described later is executed (S5).
  • the microphone sensitivity to be set is specified from the microphone sensitivity setting table 70 based on (LUX) (S41). As shown in FIG. 7, in the microphone sensitivity setting table 70, a measured brightness value (LU X) 71 and a microphone sensitivity 72 corresponding to the measured value (LUX) are set in a stepwise manner. The smaller the measured value (LUX) 71, the higher the microphone sensitivity 72 is set. Then, the microphone sensitivity specified in S41 is set as a microphone sensitivity setting value in a predetermined storage area of the RAM 13 (S43).
  • the microphone sensitivity setting value is specified in S43. Will be set.
  • the microphone sensitivity can be set in four stages of -45, -35, -25, and-15 (dB).
  • S9 it is determined whether or not the call is finished (S9). If the call has not ended (S9: NO), the process returns to S1 and the call mode determination processing is executed again. If the mode is "secret mode”, the microphone sensitivity setting value is changed by the microphone sensitivity change processing (S5) and " If it is “normal mode”, the microphone sensitivity setting value is returned to the default (S7). As described above, during the execution of the call, S1 to S9 are repeatedly executed, and the optimum call mode and the microphone sensitivity setting value are set each time. On the other hand, when the call ends (S9: YES), the microphone sensitivity setting value is returned to the default (S11), and this processing ends.
  • the first touch sensor 20 and the photo sensor 40 are provided at the lower part of the housing 2, and the second touch sensor 30 is provided at the side surface of the housing 2.
  • the telephone 1 is set to the “normal mode” call mode.
  • the user makes a confidential call (right side in Fig. 1)
  • the state is detected by the first touch sensor 20, the second touch sensor 30, and the photo sensor 40, and the telephone 1 is set in the "secret mode" as a call mode. Is set. Therefore, the user of the telephone 1 can set various call modes by a natural operation of covering the lower part of the housing 2 on which the microphone 6 is provided.
  • the optimum microphone sensitivity is determined from the microphone sensitivity setting table 70 according to the measured brightness value (LUX) obtained from the photo sensor 40. Identified and set as the microphone sensitivity setting value of microphone 6. Therefore, the user of the telephone 1 can talk to any extent by the natural action of covering the lower part of the housing 2. Audio can be adjusted. Further, since the microphone sensitivity is changed stepwise according to the measurement value (LUX) from the photo sensor 40, it is possible to adjust to an optimal audio signal according to the degree to which the lower portion of the housing 2 is covered.
  • the telephone 1 has the components in a positional relationship such that the microphone 6, the first touch sensor 20, and the photo sensor 40 are provided at a lower portion of the housing 2, and the first touch sensor 20 is provided near the microphone 6. I do. Therefore, the user can simultaneously and easily perform the setting of the call mode and the adjustment of the call voice by only one operation of covering the lower part of the case 2 with the hand that does not hold the case 2.
  • the hand of the user holding the telephone 1 contacts the second touch sensor 30 provided on the side surface of the housing 2, so that the user has no force during the call state. Can be accurately grasped. Therefore, only when the lower part of the handset is covered during a call, the setting of the call mode and the adjustment of the call voice can be performed.
  • the photo sensor 40 is provided on the surface of the housing 2 that faces the user's face when the user holds the telephone 1 during a call. Therefore, since the photo sensor 40 is provided at a position where the user can easily cover it arbitrarily, the user can easily adjust the call voice with a natural motion.
  • the telephone 1 according to the second embodiment has the same basic configuration as that of the first embodiment.
  • the audio signal is adjusted by changing the sensitivity of the microphone 6, whereas in the present embodiment, the audio signal is adjusted by changing the amplification factor of the call audio from the microphone 6.
  • FIG. 8 is a main flowchart of a call mode control process in the second embodiment.
  • a call mode determination process is executed (S71), and it is determined whether or not “hidden / hidden mode” is “ON” (S73).
  • S73 the amplification factor changing process is executed (S75).
  • This amplification factor change processing is performed by the audio signal processing unit 15 that converts the call audio acquired from the microphone 6 into an audio signal, and the audio signal from the amplifier unit (not shown) for adjusting the volume. This is a process for changing the signal amplification factor. Amplification rate of such audio signal May be realized by a known technique (for example, see Japanese Patent Application Laid-Open No. H10-276247).
  • the amplifier section (not shown!) Is configured by a programmable amplifier that can change the gain arbitrarily, and “0 dB” is set as a default in the amplifier section (not shown). A case will be exemplified.
  • a gain corresponding to the measured brightness value (LUX) acquired from the photo sensor 40 is calculated in S75. You. Specifically, the smaller the measured brightness value (LUX), the larger the gain calculated. Then, the calculated gain (for example, “5 dB”) is set as an amplification factor in a power amplifier unit (not shown). On the other hand, if it is determined in S73 that “hidden mode” is not “ON” (S73: NO), the call mode is set to “normal mode!”. The set amplification factor is returned to the default “0 dB” (S77).
  • the amplification factor of the audio signal from the microphone 6 is changed stepwise according to the measurement value (LUX) from the photosensor 40.
  • User 1 can set various call modes by the natural operation of covering the lower part of Case 2 and adjust the audio signal to the optimal one according to the extent to which the lower part of Case 2 is covered. it can.
  • Example 3
  • the telephone 1 according to the third embodiment has the same basic configuration as that of the first embodiment. However, in the first embodiment, the sound signal is adjusted by changing the sensitivity of the microphone 6, whereas in the present embodiment, the sound signal is adjusted by correcting the waveform of the call sound from the microphone 6.
  • FIG. 9 is a main flowchart of a call mode control process in the third embodiment.
  • a call mode determination process is executed (S91), and it is determined whether or not “hidden / hidden mode” is “ON” (S93). "Hidden mode” is determined to be “ON” If it has been performed (S93: YES), a waveform correction coefficient change process is executed (S95).
  • the waveform correction coefficient changing process (S95) is performed by a waveform correction unit (illustrated in the figure) for adjusting the waveform of the audio signal in the audio signal processing unit 15 that converts the call voice acquired from the microphone 6 into an audio signal.
  • This is a process for changing the adjustment content in (No).
  • various known techniques can be applied. For example, a voice signal is converted to a frequency and power corresponding to the frequency by a Fourier transform to obtain a signal in which a voice component and a noise component (noise) are mixed. The noise component has lower power than the voice component.
  • Spectral subtraction in which only the audio component is extracted by removing the lower part of the power, and this is inverse Fourier transformed and returned to a signal of time and amplitude to obtain an audio signal with reduced noise components (noise) And the like can be used (see, for example, JP-A-934497).
  • the waveform correction unit (not shown) of the telephone 1 of the present embodiment controls the reduction amount of the noise component (noise) according to the measurement value (LUX) from the photosensor 40 as an example.
  • a waveform correction coefficient for performing the above-described spectrum subtraction is set, and the amount of noise reduction is determined based on the waveform correction coefficient.
  • the waveform correction coefficient corresponding to the measured brightness value (LUX) acquired from the photo sensor 40 is determined in S95. Is calculated. Specifically, the waveform correction coefficient is calculated such that the smaller the measured brightness value (LUX), the smaller the noise reduction amount. Then, the calculated waveform correction coefficient is set in a waveform correction unit (not shown). On the other hand, if it is determined in S93 that “hidden mode” is not “ON” (S93: NO), the call mode is set to “normal mode!”. The set waveform correction coefficient is returned to the default (S97).
  • the telephone 1 Mode is set to the call mode, and the waveform correction coefficient of the voice signal is set to the default.
  • the telephone 1 will be in the call mode. Is set as the “secret mode”, and the waveform correction coefficient of the waveform correction unit ( ⁇ in the figure) is changed according to the measured brightness value (LUX). Therefore, the user of the telephone 1 can arbitrarily correct the waveform of the audio signal from the microphone 6 by a natural operation of covering the lower part of the housing 2 provided with the microphone 6.
  • the waveform of the audio signal from the microphone 6 is corrected in accordance with the measurement value (LUX) from the photo sensor 40.
  • the user can set various communication modes by a natural operation of covering the lower part of the housing 2 and adjust the audio signal to an optimal one according to the extent to which the lower part of the housing 2 is covered.
  • a telephone 100 according to a fourth embodiment of the present invention will be described with reference to FIGS. 10 to 14.
  • the telephone 100 according to the present embodiment is carried by a user.
  • the user holds the telephone 100 in one hand, and With your phone in one ear and into the microphone 6 to speak with the other party at normal loudness (normal call).
  • normal call normal loudness
  • a call with a normal volume is performed between the user and the other party.
  • the telephone 100 detects that the volume level of the voice is low, and automatically adjusts the voice without requiring any special operation.
  • the telephone 100 senses that the volume level of the voice is high, and Adjust the sound to the volume level.
  • the sound is adjusted by changing the sensitivity of the microphone 6.
  • FIG. 10 is a block diagram showing an electrical configuration of telephone 100. As shown in FIG. 10, a CPU 10, a ROM 12, a RAMI 3, a communication unit 14, an audio signal processing unit 15, and an input / output IZ 019 are mutually connected to a telephone 100 via a bus 11.
  • the CPU 10 controls each unit connected by the bus 11, and executes a call process, a data communication process, and the like.
  • the ROM 12 is a non-rewritable memory that stores various programs executed by the telephone 100 and fixed value data. Power of executing voice adjustment program as one of the modules executed by telephone 100 of the present embodiment. This voice adjustment program is also stored in a program storage area (not shown) on ROM 12.
  • the RAM 13 is a memory for temporarily storing various data when each process of the telephone 100 is executed.
  • the communication unit 14 is a network control unit (NCU) for performing line control.
  • the audio signal processing unit 15 encodes the audio signal input from the microphone 6 and transmits the encoded audio signal to the other party via the communication unit 14 or converts the audio signal of the other party obtained via the communication unit 14 Processing related to audio signals, such as decoding and outputting to the speaker 3, is performed.
  • An operation unit 4 and a display unit 5 are connected to the input / output IZ019, and various input / output signals can be transmitted inside the telephone 100.
  • FIG. 11 is a main flowchart of the sound adjustment processing.
  • FIG. 12 is a flowchart showing details of the sound volume measurement process from the microphone (S201).
  • FIG. 13 is a flowchart showing details of the microphone sensitivity change processing (S204), and
  • FIG. 14 is a microphone sensitivity conversion table.
  • the main flowchart of the voice adjustment process (FIG. 11) is executed while the user is using the telephone 100 to make a call. That is, when an incoming or outgoing call is made on the telephone set 100, voice adjustment processing is started, the processing is continuously executed during a call, and the processing is ended when the call ends.
  • a sound volume measurement processing of microphone power (S201) is executed.
  • the microphone volume measurement process is based on the sound input to the microphone 6 of the telephone 100. This is a process for appropriately measuring the current call voice of the user from the volume of the call.
  • the volume measurement process for the microphone power (S201) first, it is determined whether or not the transmission from the other party is being output from the speaker 3 (S211). This determination can be made, for example, by the CPU 10 analyzing an audio signal output from the audio signal processing unit 15 to the speaker 3.
  • the volume from the microphone 6 is measured (S212).
  • the volume of the microphone 6 can be measured based on the volume level of the audio signal input to the audio signal processing unit 15.
  • the measured sound volume measurement value is recorded in, for example, the RAM 13. Note that, when the transmission from the speaker 3 is not being output, the user is basically inputting voice. Therefore, the measured volume value is considered to represent the volume of the user's voice.
  • step S211 If it is determined in step S211 that the transmission is being output, the average value is set as the volume measurement value.
  • the average value of the 0 sound volume measurement values is set in advance in, for example, a predetermined storage area of the ROM 12, and the CPU 10 reads and sets the average value as a reference of the sound volume measurement values.
  • the average value of the measured volume values is recorded as, for example, the RAM 13 as the measured volume value. Note that when the transmission from the speaker 3 is being output, basically, the user has not input any voice. Therefore, the measured sound volume measurement value is considered to represent the external environmental sound, not the sound volume of the user's voice, and is not suitable for use in adjusting the sensitivity of the microphone 6, so the average value is set as the sound volume measurement value.
  • the process returns to the audio adjustment processing (FIG. 11).
  • the sound volume analysis process is a process in which the CPU 10 reads the sound volume measurement value recorded in the RAM 13 and calculates a deviation from the average value and the standard deviation of the sound volume measurement values recorded in the ROM 12.
  • the predetermined threshold is set in a predetermined storage area of the ROM 12 in advance. This is a process for determining whether or not the volume level of the sound input to the microphone 6 needs to be adjusted when transmitting to the other party.
  • a microphone sensitivity change process is performed (S204). As shown in FIG. 13, in the microphone sensitivity changing process (S204), the microphone sensitivity to be set is specified from the microphone sensitivity setting table 240 based on the deviation value of the sound volume measurement value acquired in S202 (S231).
  • the microphone sensitivity setting table 240 includes a deviation value 242 of the sound volume measurement value and a microphone sensitivity 244 corresponding to the deviation value set in a stepwise manner. The smaller the value 242 is, the higher the microphone sensitivity 244 is set. Then, the microphone sensitivity specified in S231 is set as a microphone sensitivity set value in a predetermined storage area of the RAM 13 (S232).
  • the process proceeds from S203 to S204 in which microphone sensitivity change processing is performed.
  • “large (—25 dB)” is specified as the microphone sensitivity
  • the microphone sensitivity setting value is set in S232.
  • Microphone 6 is capable of collecting smaller sounds as the microphone sensitivity setting value is higher, but has the characteristic that small noises are collected.
  • the microphone sensitivity can be set in four stages of -45, -35, -25, and-15 (dB).
  • the microphone sensitivity setting value is returned to the default (S205).
  • the default value of the microphone sensitivity setting value is set in the ROM 12 in advance, and the CPU 10 reads and sets the value.
  • the default value of the microphone sensitivity setting is “Medium (35dB)”
  • S206 it is determined whether or not the call is terminated (S206). If the call has not ended (S206: NO), the process returns to S201 and the volume adjustment process is executed again. If the absolute value of the difference between the deviation value of the volume measurement value and 50 is larger than the threshold, the microphone sensitivity change process is performed. The microphone sensitivity setting value is changed (S204), and if it is equal to or smaller than the threshold value, the microphone sensitivity setting value is returned to the default (S205). As described above, during the execution of the call, S201 to S206 are repeatedly executed, and the optimum microphone sensitivity setting value is set each time. On the other hand, when the call ends (S206: YES), the microphone sensitivity setting value is returned to the default (S207), and this processing ends.
  • the microphone sensitivity is set to the default when the transmission is being output from the speaker 3, and the microphone 6 is set when the transmission is not being output. Enter in The microphone sensitivity is set stepwise according to the volume level of the sound to be received. Therefore, the telephone 100 can accurately measure the volume of the user's voice, and can appropriately adjust the volume. In addition, the user of the telephone 100 can make a normal call or a confidential call when it is necessary to perform a special operation such as pressing a button.
  • the telephone 100 according to the fifth embodiment has the same basic configuration as that of the fourth embodiment.
  • the volume input to the microphone 6 is measured, and the audio signal is adjusted by changing the sensitivity of the microphone 6 each time according to the measured volume level.
  • the measured volume level is held as a history, and the audio signal is adjusted according to the history.
  • FIG. 15 is a main flowchart of the sound adjustment processing in the fifth embodiment.
  • a process of measuring the volume from the microphone is performed (S251). Similar to the processing in the fourth embodiment, the average value is set as the sound volume measurement value when the speaker 3 is outputting the transmission, and the sound volume from the microphone 6 is measured when the speaker 3 is not outputting the transmission. That is, when the speaker 3 is not outputting the transmission, the volume from the microphone 6 is measured as the user's voice, and while the speaker 3 is outputting the transmission, the volume is measured from the microphone 6. Regardless, set the average value as the volume measurement value.
  • a sound volume value analysis process is performed (S252).
  • the CPU 10 reads the sound volume measurement value recorded in the RAMI 3 and calculates an average value and a standard deviation of a predetermined number of sound volume measurement values, and calculates a deviation value of the sound volume measurement value recorded in the RAM 13. Processing such as calculating The
  • FIG. 16 is a flowchart showing the details of the volume analysis process (S252). As shown in FIG. 16, it is determined whether or not the number of sound volume measurement values measured in S251 and stored in the RAM 13 (hereinafter, referred to as sound volume value history data in this embodiment) exceeds a predetermined number. Judgment (S261) o This processing is for judging whether or not a sufficient number of sound volume value history data have been accumulated for appropriately adjusting the sensitivity of the microphone 6. Processing.
  • the oldest volume value history data is deleted (S262), and the latest volume value history data is stored (S263).
  • S261: YES When the number of volume value history data exceeds a predetermined number (S261: YES), the oldest volume value history data is deleted (S262), and the latest volume value history data is stored (S263).
  • S261: YES the oldest volume value history data is deleted (S262), and the latest volume value history data is stored (S263).
  • the latest volume value history data is retained, and when the number exceeds a certain number, old data is deleted, and the volume value history data that accurately represents the latest user situation is retained.
  • the sound volume value history data is stored in a predetermined storage area of the RAM 13, for example.
  • an average value and a standard deviation are obtained using the stored sound volume value history data (S 264), and a deviation value of the measured sound volume measurement value is obtained using the average value and the standard deviation (S 265).
  • the CPU 10 reads out the volume value history data stored in the RAM 13 and performs calculations.
  • volume value history data is equal to or less than the predetermined number (S261: NO)
  • 50 is set as the deviation value of the measured volume (S266). That is, when the number of volume value history data is small, it is difficult to determine that the deviation value calculated using the volume value history data can accurately represent the call situation of the user.
  • the measured sound volume measurement value is stored as sound volume value history data (S267). After the processing of S265 and S267, the process returns to the audio adjustment processing (FIG. 15).
  • a predetermined threshold is set in a predetermined storage area of the ROM 12 in advance. This is a process of determining whether or not the volume level of the voice input to the microphone 6 needs to be adjusted when transmitting to the other party.
  • a microphone sensitivity change process is performed (S254).
  • the microphone sensitivity is set stepwise according to the deviation value of the volume measurement value. The smaller the deviation value of the volume measurement value, the higher the microphone sensitivity is set. Then, the specified microphone sensitivity is set in a predetermined storage area of the RAM 13 as a microphone sensitivity setting value.
  • the microphone sensitivity setting value is returned to the default (S255). At this time, the default value of the microphone sensitivity setting value is set in the ROM 12 in advance, and the CPU 10 reads and sets the value.
  • S254 or S255 it is determined whether or not the call is terminated (S256). If the call has not ended (S256: NO), the process returns to S251 and the volume adjustment process is executed again. If the absolute value of the difference between the deviation value of the volume measurement value and 50 is larger than the threshold, the microphone sensitivity change process is performed. The microphone sensitivity setting value is changed (S254). If the value is equal to or smaller than the threshold value, the microphone sensitivity setting value is returned to the default (S255). As described above, during the execution of the call, S251 to S256 are repeatedly executed, and each time the optimum microphone sensitivity setting value is set based on the volume value history data. On the other hand, when the call ends (S256: YES), the microphone sensitivity setting value is returned to the default (S257), and this processing ends.
  • the microphone sensitivity is set to the default when the transmission is being output from the speaker 3, and the microphone 6 is set when the transmission is not being output.
  • the microphone sensitivity is set stepwise according to the deviation of the measured sound volume value from the average of the sound volume value history data of the voice input to the speaker. Therefore, in telephone 100, the volume of the user's voice can be accurately measured, and the volume can be adjusted appropriately. In addition, the user of the telephone 100 can make a normal call or a confidential call when no special operation is required.
  • the configuration is simplified because it is not necessary to provide a sensor or the like for the phone 100 to detect a confidential call operation. become. In addition, it is possible to make adjustments so that even low-volume users and, on the contrary, loud-voice users can make calls at an appropriate volume even in normal calls that are not limited to confidential calls. [0124] Also, when it is difficult to hear the power of the other party who speaks with a large external environmental sound, it is easy to naturally talk in a loud voice. By maintaining this, it is possible to transmit to the other party with an audio signal having an appropriate volume.
  • the microphone sensitivity is set stepwise according to the deviation value of the volume measurement value from the average of the volume value history data of the voice input to the microphone 6, the volume of the voice of the user in a normal call can be reduced.
  • the volume can be adjusted according to the characteristics.
  • the telephone 270 according to a sixth embodiment of the present invention is a telephone carried and used by a user.
  • the telephone 270 according to the present embodiment is different from the telephone 100 according to the fourth and fifth embodiments in the physical configuration in that an environmental sound external microphone 21 is provided.
  • the external microphone 21 for environmental sound is a microphone for detecting environmental sound other than the transmission of the user and the other party. Therefore, it is preferable to provide it at a position distant from speaker 3 and microphone 6, for example, on the side surface or back surface of telephone 270.
  • the other physical configuration is substantially the same as that of the telephone 100, and the description is omitted.
  • FIG. 17 is a block diagram showing an electrical configuration of telephone 270.
  • a CPU 10, a ROM 12, a RAMI 3, a communication unit 14, an audio signal processing unit 15, and an input / output IZ019 are connected to a telephone 270 via a bus 11.
  • a speaker 3, a microphone 6, and an external microphone 21 for environmental sound are connected to the audio signal processing unit 15, and an operation unit 4 and a display unit 5 are connected to the input / output IZ019, respectively.
  • the external microphone 21 for environmental sound which is a characteristic configuration of the telephone 270 according to the present embodiment, is a microphone that mainly detects environmental sound other than the voice of the user or the transmission of the other party and converts it into an audio signal.
  • the audio signal from the external microphone for environmental sound 21 is input to the audio signal processing unit 15 and used for processing for removing environmental sound from the sound of the microphone 6.
  • the voice adjustment processing of the telephone 270 includes the fourth and fifth voice adjustment processing and the main flow chart.
  • the ports are the same. What is different is the “volume measurement processing from microphone” of S201 in FIG. 11 of the fourth embodiment and S251 of FIG. 15 of the fifth embodiment.
  • FIG. 18 is a flowchart showing details of the sound volume measurement process from the microphone.
  • the sound from the external microphone 21 for environmental sound is measured (S281).
  • the external microphone for environmental sound 21 is installed far away from the speaker 3 and the microphone 6, and measures the user's voice and the environmental sound other than the transmission of the other party.
  • the phase of the measured sound from the external microphone for environmental sound 21 is inverted (S282). This is a process for measuring the user's call volume as accurately as possible by subtracting the environmental sound from the volume force measured by microphone 6.
  • the external sound for ambient sound microphone 21 converts the input sound into an audio signal and inputs the audio signal to the audio signal processing unit 15, and the audio signal processing unit 15 inverts the phase of the audio signal.
  • the sound from the microphone 6 is measured (S283).
  • the microphone 6 converts the measured sound into a sound signal and inputs the sound signal to the sound signal processing unit 15.
  • the volume measurement process from the microphone 6 sets the average value as the volume measurement value when the speaker 3 is outputting the transmission, and sets the microphone value when the speaker 3 is not outputting the transmission. Measure the volume from 6. That is, when the speaker 3 is not outputting a transmission, the volume from the microphone 6 is measured as the user's voice, and while the speaker 3 is outputting the transmission, the volume from the microphone 6 is output. Regardless, set the average value as the volume measurement value.
  • the audio signal processing unit 15 combines the inverted audio signal from the external microphone for environmental sound 21 with the audio signal from the microphone 6. This is a process for removing environmental sounds other than the user's voice from the voice detected by the microphone 6.
  • the sound volume from the microphone 6 is measured based on the synthesized audio signal (S285).
  • This is a process of measuring, as a sound volume measurement value from the microphone 6, the sound volume of the sound obtained by removing the sound from the environmental sound external microphone 21 as the environmental sound.
  • the measured sound volume measurement value is stored in a predetermined area of the RAM 13, for example.
  • the sound volume value history data may be created.
  • the process in S285 the process returns to the voice adjustment process similar to the fourth and fifth embodiments.
  • the same processing as in the fourth and fifth embodiments is performed, and the sensitivity of the microphone 6 is set according to the deviation value of the measured sound volume value of the microphone 6.
  • the average value and the standard deviation of the measured volume value of the microphone 6 obtained in the process of FIG. 18 are stored in the ROM 12 in advance as in the fourth embodiment. Or a deviation value from the average value and the standard deviation based on the sound volume value history data stored in the RAM 13 as in the fifth embodiment.
  • the volume adjustment process is performed again, and the microphone sensitivity change process is performed according to the deviation value of the volume measurement value.
  • the above-described sound adjustment processing is repeatedly executed, and the optimum microphone sensitivity setting value is set each time.
  • the microphone sensitivity setting value is returned to the default, and the process ends.
  • the audio signal from the external microphone for environmental sound 21 is inverted and synthesized with the audio signal from the microphone 6 to remove external environmental sound.
  • the microphone sensitivity is set according to the sound volume measurement value, it is possible to perform the sound adjustment processing more accurately.
  • FIG. 19 is a diagram showing an outline of a communication system 300 having telephones 302 and 304
  • FIG. 20 is a flowchart showing a transmitting process in the telephones 302 and 304
  • FIG. 21 is a flowchart showing a receiving process in the telephones 302 and 304. It is.
  • telephone 302 and telephone 304 are connected via communication network 306 including wireless.
  • the telephone 302 and the telephone 304 are telephones having the same functions and configurations, and their appearances are the same as those of the telephones according to the fourth and fifth embodiments. 00, which is substantially the same as the telephone 270 according to the fifth embodiment in which the first touch sensor 20, the second touch sensor 30, and the photo sensor 40 are not provided.
  • the electrical configuration is substantially the same as the telephone 100 according to the third and fourth embodiments shown in FIG. 10, and therefore, the description will be made using the same reference numerals.
  • the difference from the first to sixth embodiments is that, as shown in FIG. 19, when audio data is transmitted, the set level of the speaker 3 is transmitted while being superimposed.
  • the voice from the microphone 6 is encoded (S310). That is, when the microphone 6 converts the input voice into a voice signal and inputs the voice signal to the voice signal processing unit 15, the voice signal processing unit 15 encodes the voice signal to generate voice data.
  • a speaker setting level is obtained (S311).
  • the CPU 10 is set in the telephone on the transmitting side, and acquires the setting level of the speaker 3 stored in a predetermined area of the RAM 13.
  • transmission data in which the speaker setting level is superimposed on the audio data is created (S 312).
  • the superposition of the speaker setting level on the audio data may be realized by a known technique (for example, see Japanese Patent Application Laid-Open No. 2001-157179).
  • the transmission data can be created by adding a header to the acquired speed setting level and superimposing the header on the audio data created by the audio signal processing unit 15 as an example.
  • the CPU 10 inputs the created transmission data to the communication unit 14.
  • Communication unit 14 transmits the transmission data to the other party's telephone (S313). This is a process in which the communication unit 14 transmits transmission data to the other party's telephone via the communication network 306.
  • the voice data of the other party is separated from the received data (S320).
  • the received data is data transmitted by the other party as transmission data.
  • This received data has the speaker setting level superimposed on the audio data.
  • the communication unit 14 inputs the received data to the CPU 10, and the CPU 10 separates the audio data from the received data.
  • the audio data is decoded (S321).
  • the separated audio data is decoded by the audio signal processing unit 15 and converted into an audio signal.
  • the audio signal is input to the speaker 3, and the speaker 3 outputs audio (S322). Further, it is determined whether or not the call is terminated (S323). If the call has not ended, the process returns to S320 and repeats the above processing. In this way, during the execution of the call, S320 to S323 are repeatedly executed, the audio data is separated from the received data including the speaker setting level, decoded, and output from the speaker 3. When the call ends, the process ends.
  • FIG. 22 is a main flowchart of the sound adjustment processing
  • FIG. 23 is a flowchart showing details of the microphone sensitivity change processing
  • FIG. 24 is a microphone sensitivity conversion table.
  • the speaker setting level of the other party is separated from the received data (S330).
  • the communication unit 14 inputs the received data to the CPU 10, and the CPU 10 separates the received data power from the speaker setting level.
  • it is determined whether or not the speaker setting level of the other party can be separated S331). If the speaker setting level can be separated, microphone sensitivity change processing is performed (S332).
  • the microphone sensitivity is specified from the microphone sensitivity setting table card based on the acquired speaker setting level of the other party (S340).
  • the microphone sensitivity setting table 360 has a microphone sensitivity 364 corresponding to the speaker setting level 362 of the other party!
  • the other party's speaker setting level is 3 62, and the microphone sensitivity 364 is set higher.
  • the microphone sensitivity is maximum (-15 dB), and when it is 20%, the microphone sensitivity is minimum (45 dB).
  • the microphone sensitivity specified in the microphone sensitivity conversion table 360 is set to the microphone sensitivity setting value of the microphone 6 (S341), and the process returns to the audio adjustment processing (Fig. 22). If the speaker setting level of the other party cannot be separated (S331: NO), the microphone sensitivity setting value is returned to the default (S333), and the processing returns to the sound adjustment processing (FIG. 22). Subsequently, it is determined whether or not the call is terminated (S334). If the call has not ended, the process returns to S330 and repeats the audio adjustment process. As described above, during a call, S330 to S334 are repeatedly executed to separate the speaker setting level from the reception data including the speaker setting level of the other party and change the microphone sensitivity according to the speaker setting level. When the call ends (S334: YES), the microphone sensitivity setting value is returned to the default (S335), and the process ends.
  • the transmission process the transmission data in which the speaker setting level is superimposed on the audio data is transmitted, and in the reception process.
  • the received data power is separated from the speaker setting level and the microphone sensitivity is set according to the speaker setting level. Therefore, when the speaker setting level of the other party is low, the microphone sensitivity is increased, and when the speaker setting level is high, the microphone sensitivity is lowered, so that the user needs to perform a special operation such as pressing a button. And the volume can be adjusted appropriately.
  • the speaker setting levels set by the users of the telephones 302 and 304 may be different from each other, appropriate microphone sensitivity can be set for each of them, so that more precise volume adjustment is performed. It is possible.
  • the sound adjustment according to the present embodiment is performed according to the speaker setting level of the receiving side. For example, for a user who has difficulty in hearing when the volume is low, the volume level is increased. The volume can be adjusted appropriately according to the custom of the time.
  • the telephone 1 is a handset having a microphone and a speaker for use by a power user exemplifying a mobile phone in which all components are integrally provided in the housing 2,
  • the present invention can be applied to a general fixed telephone connected to a main unit having other components such as an operation unit, a display unit, and a control unit by a cord.
  • the first touch sensor 20, the second touch sensor 30, and the photo sensor 40 may be provided in the handset!
  • the method of adjusting the audio signal from the microphone 6 is not limited to the above embodiment, Amplify the audio signal from the microphone 6, ambient noise reduction, sound quality correction (waveform correction), frequency correction (simple equalizer), and echo depending on the implementation and usage of the machine 1, 100, 270, 302, 304 Various techniques can be applied, such as to make it easier to hear.
  • the waveform of the audio signal is corrected according to the measurement value (LUX) from the photo sensor 40.
  • the original sound may be added (masked) by a frequency domain filter.
  • the method of adjusting the volume by changing the sensitivity of the microphone 6 has been described.
  • the amplification factor of the audio signal is gradually increased. It may be changed, or the waveform of the audio signal may be corrected as in the third embodiment.
  • notification to that effect may be made to the other party.
  • a predetermined vibration operation for example, on the terminal (telephone) of the other party receiving the notification that the “hidden mode” is set, a predetermined vibration operation, a predetermined buzzer sound, and a sound generation operation of a sound are executed.
  • the adjustment of the audio signal from the microphone 6 may be performed not on the telephone 1 but on the terminal (telephone) of the other party.
  • a force provided with the first touch sensor 20 and the second touch sensor 30 is used as a confidential motion detection means for detecting that the lower part of the housing 2 is covered by a user during a call.
  • the configuration in which only the h sensor 20 is provided may be adopted.
  • second touch sensor 30 may be provided at a force or other portion provided on the side surface of telephone 1.
  • the telephone 1 may be provided with three or more secret operation detecting means.
  • it is configured as a contact-type sensor that detects contact with a user's body part, it may be configured as a non-contact sensor, or may be configured as a pressure sensor, an electrostatic sensor, or an optical sensor.
  • the covering detecting means detects that the lower part of the housing 2 is covered by the user during the call.
  • the “secret mode” is set, but the secret action detection means can set various call modes based on various actions of the user. For example, when a user leans forward, the tilt of the mobile phone changes, and this change in tilt is measured using a gyro or simple weight. If the posture detection means such as the detected one detects the "secret mode", it may be set! / ⁇ .
  • the “normal mode” and the “hidden mode” are exemplified as the call modes, but various call modes can be used by the user or the designer. For example, a "noise call mode" to more clearly convey the voice of a user who talks in a noisy environment to the other party, "Loudspeaker mode” to convey to the user.
  • the telephone 1 can automatically set various call modes according to the user's operation. .
  • the photo sensor 40 may be provided in another part of the power telephone 1 provided at the lower part of the telephone 1.
  • the photo sensor 40 is configured as an optical sensor, and the user can arbitrarily adjust the audio signal by adjusting the amount of light applied to the photo sensor 40.
  • the adjustment instruction unit may be configured by another unit. .
  • it may be configured with a touch panel that detects the intensity of external pressure, so that the user can arbitrarily adjust the audio signal by pressing the adjustment instruction means.
  • the telephone 1 is capable of adjusting the speech signal by a natural operation of the user during a call, and the secretory operation detecting means and the adjusting instruction means.
  • Various sensors can be provided in various modes.
  • the user operates the operation unit 4 to further provide a microphone sensitivity setting unit for setting the microphone sensitivity to a desired sensitivity.
  • a microphone sensitivity setting unit for setting the microphone sensitivity to a desired sensitivity.
  • the second embodiment if it is sufficient to additionally provide an amplification factor setting means for setting the amplification factor to a desired amplification factor, if the measured brightness value (LUX) is equal to or larger than the standard threshold value, it is used. This is the value set by the user, and the value returned to the default after the call ends is also the value set by the user.
  • LUX measured brightness value
  • the call mode determination process (S1), it is determined whether the measured brightness value (LUX) is lower than the standard threshold value. , 1st Tatchisen It may be determined whether or not the power is on.
  • the voice communication device of the present invention can be applied to a terminal device capable of voice communication, such as a fixed telephone, a mobile telephone, a PHS, and a personal computer with a telephone function.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Function (AREA)
  • Telephone Set Structure (AREA)

Abstract

Selon la présente invention, un téléphone (1) présente un premier détecteur tactile (20) servant à détecter un contact d'une partie physique d'un utilisateur au niveau de la partie inférieure d'un boîtier (2) et un second détecteur tactile (30) au niveau de la surface latérale du boîtier (2), de telle façon que l'utilisateur qui est en train de communiquer peut ajuster la communication audio par le biais d'une opération manuelle. En outre, au niveau de la partie inférieure du boîtier (2) se trouve un photodétecteur (40) servant à détecter d'une façon exempte de contact, un obstacle proche par réflexion de lumière dans le voisinage d'un microphone (6), à travers lequel l'utilisateur entre sa voix. Lorsque l'utilisateur en communication recouvre les environs de sa bouche (microphone 6) avec la main qui ne tient pas le téléphone (1), l'état est détecté par le premier détecteur tactile (20), le second détecteur tactile (30) et le photodétecteur (40), et le mode de conversation secret est établi en tant que mode de communication du téléphone (1). Par ailleurs, en fonction du degré de couverture du photodétecteur (40) par l'utilisateur, le signal vocal provenant du microphone (6) est ajusté.
PCT/JP2005/008775 2004-06-08 2005-05-13 Dispositif de communication audio WO2005120177A2 (fr)

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Publication number Priority date Publication date Assignee Title
CN106412785A (zh) * 2016-07-07 2017-02-15 福建太尔电子科技股份有限公司 多功能骨传导助听器
CN107864295A (zh) * 2017-12-19 2018-03-30 广东欧珀移动通信有限公司 通话控制方法、移动终端及计算机可读存储介质
WO2020019843A1 (fr) * 2018-07-26 2020-01-30 Oppo广东移动通信有限公司 Procédé de détection de blocage de trou de microphone et produit associé

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