Volume controller
AssigneeCanon Kabushiki Kaisha
InventorsIsamu Ozawa, Shigeki Sakurai
Life of this patent
Estimating the term…
Abstract
A telephone exchange operating on a volume controller provided with functions for inputting digitized speech data and volume control data, and converting a volume of the inputted speech data. A talker's sound inputted from a first channel has the volume converted and is outputted to a second channel for outputting a listener's sound. A volume of the speech data is converted according to a volume control data and exchanged. An augmenter for a sound level is calculated according to a reference signal sent from a first circuit to a second circuit.
Claims19
A volume controller, comprising:
- speech data input means for inputting speech data according to a signal supplied via one of a plurality of external lines;
- changing means for changing a volume of the inputted speech data according to volume control data, and for outputting the volume changed speech data to another one of the plurality of external lines;
- and
- control data supply means for supplying said changing means with the volume control data corresponding to said one of the plurality of external lines through which the signal is supplied and said another one of the plurality of external lines to which the volume changed speech data is to be outputted.
A telephone exchange, comprising:
- exchange means;
- and
- changing means for changing a volume of an inputted sound,
- wherein said exchange means sends a sound inputted from a first external channel to said changing means, and outputs the sound having a volume changed by said changing means to a second external channel, and
- said changing means changes the volume of the inputted sound according to addresses in said exchange means to which the first and second external channels are connected.
A telephone exchange, comprising:
- exchange means for connecting a plurality of external lines;
- generating means for generating volume control data according to addresses in said exchange means to which a first of the plurality of external lines for inputting speech data and a second of the plurality of external lines for outputting the speech data are connected;
- and
- changing means for changing a volume of the speech data according to the volume control data.
A method for transferring a sound from a first circuit to a second circuit by determining a level of sound from the first circuit according to a level augmenter, comprising:
- a step for sending a reference signal to the first circuit;
- a step for receiving the reference signal from the second circuit by the first circuit;
- and
- a step for calculating the level augmenter according to the reference signal received from the second circuit.
A call transfer apparatus comprising:
- connecting means for connecting a plurality of lines;
- and
- changing means for changing a volume of a signal from a first line and outputting the volume changed signal to a second line,
- wherein said changing means changes the volume of the signal according to addresses in said connecting means to which the first and second lines are connected.
A telephone apparatus comprising:
- memory means for storing, at positions corresponding to switch data and first speech data, data obtained by changing a volume of the first speech data, and for storing, at positions corresponding to the switch data, second speech data and the third speech data, data obtained by adding the second and the third data to each other, therein selection data is supplied for switching a volume change mode and a conference mode;
- and
- supply means for selectively supplying said memory means with the switch data and the first speech data, or the switch data, the second speech data and the third speech data.
Dependencies are inferred from the claim text.