HANDS-FREE TELEPHONE CONVERSATION APPARATUS
First Claim
1. A vehicle having a function to allow a user to talk on a mobile phone, comprising:
- a microphone for receiving sound to be transmitted to a far-end user, andloudspeakers for outputting sound received from said far-end user, whereinmeans for outputting a test sound through each of said loudspeakers;
means for detecting a sound pressure level of said test sound from each of said loudspeakers; and
means for selecting, on the basis of said sound pressure level, one of said loudspeakers as a loudspeaker for outputting sound received from said far-end user.
1 Assignment
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Accused Products
Abstract
A hands-free telephone conversation apparatus can reduce negative influence of an echo on a sound to be transmitted to a far-end user without deteriorating the sound. When a MPU determines that a mobile phone receives an incoming call, and a user starts to talk on the mobile phone, in accordance with an operation of an input device connected to an in-vehicle bus line, a MPU controls the mobile phone to have the mobile phone output, to the DSP, a sound signal indicative of a sound to be transmitted to the far-end user, and to have a switch select a loudspeaker, installed in an vehicle without being directed to the microphone, as a loudspeaker for outputting a sound received from the far-end user
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Citations
4 Claims
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1. A vehicle having a function to allow a user to talk on a mobile phone, comprising:
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a microphone for receiving sound to be transmitted to a far-end user, and loudspeakers for outputting sound received from said far-end user, wherein means for outputting a test sound through each of said loudspeakers; means for detecting a sound pressure level of said test sound from each of said loudspeakers; and means for selecting, on the basis of said sound pressure level, one of said loudspeakers as a loudspeaker for outputting sound received from said far-end user. - View Dependent Claims (2)
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3. A hands-free telephone conversation apparatus, comprising:
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a microphone to be used when a user is talking on a mobile phone; a plurality of loudspeakers; loudspeaker selecting means for selecting one of said loudspeakers for outputting sound received from a far-end user when said user is talking on said mobile phone, test sound signal generating means for generating a test sound signal; loudspeaker switching means for switching from one of said loudspeakers to another in a predetermined sequence; and sound pressure level detecting means for detecting a sound pressure level of a test sound from each of said loudspeakers selected by said loudspeaker switching means, wherein said loudspeaker selecting means selects, on the basis of said sound pressure level detected by said sound pressure level detecting means, one of said loudspeakers as a loudspeaker for outputting sound received from a far-end user. - View Dependent Claims (4)
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Specification