Abstract: A speech processing method executes at least one of first speech processing and second speech processing. The first speech processing identifies a language based on speech, performs signal processing according to the identified language, and transmits the speech on which the signal processing has been performed, to a far-end-side. The second speech processing identifies a language based on speech, receives the speech from the far-end-side, and performs signal processing on the received speech, according to the identified language.

Abstract: A sound processing method performs near-end side sound collection processing to collect a sound on a near-end side and generate a sound collection signal, near-end side filter processing to adjust the sound collection signal using transfer characteristics of a far-end side, and near-end side sound emission processing to emit the sound collection signal that has been adjusted, from a speaker on the near-end side.

Abstract: A sound pickup method obtains a correlation between a first sound pickup signal of a directional first microphone and a second sound pickup signal of a non-directional second microphone, and performs level control of the first sound pickup signal or the second sound pickup signal according to a calculation result of the correlation.

Abstract: A gain adjustment method includes using a sensor to measure a physical quantity that varies according to a distance, and adjusting a level of an audio signal obtained by a microphone according to a measurement result of the sensor.

Abstract: A sound pickup method obtains a correlation between a first sound pickup signal to be generated from a first microphone and a second sound pickup signal to be generated from a second microphone, and performs level control of the first sound pickup signal or the second sound pickup signal, according to a ratio of a frequency component of which the correlation exceeds a threshold value.

Abstract: A sound pickup method obtains a correlation between a first sound pickup signal to be generated from a first microphone and a second sound pickup signal to be generated from a second microphone, and performs level control of the first sound pickup signal or the second sound pickup signal, according to a ratio of a frequency component of which the correlation exceeds a threshold value.

Abstract: A sound processing method performs near-end side sound collection processing to collect a sound on a near-end side and generate a sound collection signal, near-end side filter processing to adjust the sound collection signal using transfer characteristics of a far-end side, and near-end side sound emission processing to emit the sound collection signal that has been adjusted, from a speaker on the near-end side.

Abstract: A gain adjustment method includes using a sensor to measure a physical quantity that varies according to a distance, and adjusting a level of an audio signal obtained by a microphone according to a measurement result of the sensor.

Abstract: A sound pickup method obtains a correlation between a first sound pickup signal of a directional first microphone and a second sound pickup signal of a non-directional second microphone, and performs level control of the first sound pickup signal or the second sound pickup signal according to a calculation result of the correlation.

Abstract: A sound pickup method obtains a correlation between a first sound pickup signal to be generated from a first microphone and a second sound pickup signal to be generated from a second microphone, and performs level control of the first sound pickup signal or the second sound pickup signal, according to a ratio of a frequency component of which the correlation exceeds a threshold value.

Abstract: A speech processing method executes at least one of first speech processing and second speech processing. The first speech processing identifies a language based on speech, performs signal processing according to the identified language, and transmits the speech on which the signal processing has been performed, to a far-end-side. The second speech processing identifies a language based on speech, receives the speech from the far-end-side, and performs signal processing on the received speech, according to the identified language.

Abstract: A signal processing apparatus includes a level adjuster adjusting a level of an input signal, and a setter calculating an electric charge estimate value being a value obtained by estimating an electric charge amount of a charging and discharging element based on the charging and discharging element to which a predetermined electric charge is supplied and in which the electric charge is held and the electric charge supplied to the charging and discharging element and setting an adjustment coefficient of the level adjuster based on the electric charge estimate value.

Abstract: A signal processing apparatus includes a level adjuster adjusting a level of an input signal, and a setter calculating an electric charge estimate value being a value obtained by estimating an electric charge amount of a charging and discharging element based on the charging and discharging element to which a predetermined electric charge is supplied and in which the electric charge is held and the electric charge supplied to the charging and discharging element and setting an adjustment coefficient of the level adjuster based on the electric charge estimate value.

Abstract: A fuel level gauge is advantageously used in a fuel tank of an automobile. The fuel level gauge installed in a fuel tank includes a float floating on the fuel surface, a rotatable member supported by a stationary member and a detector such as a Hall element. The float is connected to the rotatable member through an arm member, and the rotatable member rotates according to positions of the float. Rotational positions of the rotatable member are detected by the detector. The arm member is electrically connected through a conducting member to a ground terminal to ground electrostatic charges that are generated by abrasion between the float and the fuel and accumulated in the arm member. The conducting member slidably connects the arm member to the ground member not to disturb smooth rotation of the rotatable member. Accuracy of the fuel level detection is maintained by grounding the electrostatic charges.

Abstract: A fuel level gauge is advantageously used in a fuel tank of an automobile. The fuel level gauge installed in a fuel tank includes a float floating on the fuel surface, a rotatable member supported by a stationary member and a detector such as a Hall element. The float is connected to the rotatable member through an arm member, and the rotatable member rotates according to positions of the float. Rotational positions of the rotatable member are detected by the detector. The arm member is electrically connected through a conducting member to a ground terminal to ground electrostatic charges that are generated by abrasion between the float and the fuel and accumulated in the arm member. The conducting member slidably connects the arm member to the ground member not to disturb smooth rotation of the rotatable member. Accuracy of the fuel level detection is maintained by grounding the electrostatic charges.