# US 10,484,544 B2 · Method and system for adjusting volume of conference call

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- Number: US 10,484,544 B2
- Document ID: US10484544B2
- Status: Granted
- Kind: B2
- Application number: 15/166,280
- Filed: 2016-05-27
- Published: 2016-12-01
- Granted: 2019-11-19
- Earliest claimed: 2015-05-28
- Assignees: Compal Electronics, Inc.
- Applicants: Yi-Chang Wu; Po-Yueh Lan; Ming-Che Weng; Chang-Yuan Wu; Chih-Yuan Lin
- Inventors: Yi-Chang Wu; Po-Yueh Lan; Ming-Che Weng; Chang-Yuan Wu; Chih-Yuan Lin
- Web page: https://patentgrep.com/patent/US10484544B2

## CPC

- H04M 3/568: {audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants (echo suppression in two-way loud-speaking telephone systems H04M9/02; sound field processing per se H04S7/30)}
- H04L 65/403: Arrangements for multi-party communication, e.g. for conferences (data switching systems for conference H04L12/18; arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities H04M3/56; television conferencing systems H04N7/15)
- H04M 1/605: {involving control of the receiver volume to provide a dual operational mode at close or far distance from the user}
- G10L 21/0316: by changing the amplitude
- H04M 2250/62: user interface aspects of conference calls
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING

## Abstract

A method and a system for adjusting a volume of a conference call are provided. The system includes at least one sub-device and a host. The host respectively connects the at least one sub-device and detects a number of the connected sub-devices. The host adjusts a volume of an original voice signal received from an external device according to the number of the connected sub-devices to generate an adjusted voice signal adapted to each sub-device and provides the same to each sub-device to play. The host also adjusts volumes of the original voice signals received by the host and each sub-device, integrates the adjusted original voice signals into an integrated voice signal adapted to the external device, and provides the same to the external device to play.

## Claims

### Claim 1

A method for adjusting a volume of a conference call, adapted to adjust voice volumes by a host for providing to a plurality of sub-devices located in a same place and participating in the conference call, comprising:
respectively connecting the plurality of sub-devices located in the same place with the host, and detecting a number of the connected sub-devices by the host;
receiving an original voice signal from an external device establishing the conference call with the host by the host;
adjusting a voice volume of the original voice signal according to the number of the connected sub-devices by the host to generate an adjusted voice signal adapted to each of the plurality of sub-devices, comprising:
inquiring a volume mapping table to obtain a volume threshold corresponding to the number of the sub-devices by the host;
determining whether the voice volume of the original voice signal exceeds the volume threshold by the host; and
decreasing the voice volume of the original voice signal according to the volume threshold by the host to generate the adjusted voice signal adapted to each of the sub-devices if the voice volume of the original voice signal exceeds the volume threshold; and
respectively transmitting the adjusted voice signal to the plurality of sub-devices to play by the host,
wherein the step of decreasing the voice volume of the original voice signal according to the volume threshold by the host to generate the adjusted voice signal adapted to each of the sub-devices comprising:
obtaining a decibel (dB) capable of being produced by a loudspeaker of each of the sub-devices by the host; and
decreasing the voice volume of the original voice signal according to a proportion of the decibels of the sub-devices by the host to generate the adjusted voice signal adapted to each of the sub-devices.

### Claim 2 (depends on 1)

The method as claimed in claim 1, wherein the step of decreasing the voice volume of the original voice signal according to the volume threshold by the host to generate the adjusted voice signal adapted to each of the sub-devices comprising:
decreasing the voice volume of the original voice signal to the volume threshold by the host to serve as the adjusted voice signal adapted to each of the sub-devices.

### Claim 3

A conference call volume adjusting system, comprising:
a plurality of sub-devices; and
a host, respectively connecting the plurality of sub-devices located in a same place as the host and participating in a conference call, and detecting a number of the connected sub-devices,
wherein the host adjusts a voice volume of an original voice signal received from an external device establishing the conference call with the host according to the number of the connected sub-devices to generate an adjusted voice signal adapted to each of the plurality of sub-devices, and provides the adjusted voice signal to the plurality of sub-devices to play, wherein the host inquires a volume mapping table to obtain a volume threshold corresponding to the number of the sub-devices, determines whether the voice volume of the original voice signal exceeds the volume threshold, and decreases the voice volume of the original voice signal according to the volume threshold to generate the adjusted voice signal adapted to each of the sub-devices if the voice volume of the original voice signal exceeds the volume threshold,
wherein the host obtains a decibel (dB) capable of being produced by a loudspeaker of each of the sub-devices, and decreases the voice volume of the original voice signal according to a proportion of the decibels of the sub-devices to generate the adjusted voice signal adapted to each of the sub-devices, and
the host adjusts voice volumes of the original voice signals received by the host and each of the plurality of sub-devices according to the number of the sub-devices, integrates the original voice signals into an integrated voice signal adapted to the external device, and provides the integrated voice signal to the external device to play.

### Claim 4 (depends on 3)

The system as claimed in claim 3, wherein the host decreases the voice volume of the original voice signal to the volume threshold to serve as the adjusted voice signal adapted to each of the sub-devices.

### Claim 5 (depends on 3)

The system as claimed in claim 3, wherein the host receives the original voice signal of each of the sub-devices, and adjusts the voice volumes of the original voice signals of the host and each of the sub-devices according to the number of the connected sub-devices.

### Claim 6 (depends on 5)

The system as claimed in claim 5, wherein the host inquires the volume mapping table to obtain the volume threshold corresponding to the number of the sub-devices, and respectively determines whether the voice volumes of the original voice signals of the host and each of the sub-devices exceed the volume threshold, and decreases the voice volumes of the original voice signals to the volume threshold if the voice volumes exceeds the volume threshold.

### Claim 7 (depends on 3)

The system as claimed in claim 3, wherein the host transmits the number of the connected sub-devices to each of the sub-devices, and each of the sub-devices adjusts the voice volume of the original voice signal according to the number of the sub-devices and transmits the adjusted voice volume to the host.

### Claim 8 (depends on 7)

The system as claimed in claim 7, wherein each of the sub-devices inquires the volume mapping table to obtain the volume threshold corresponding to the number of the sub-devices, determines whether the voice volume of the original voice signal exceeds the volume threshold, and decreases the voice volume of the original voice signal to the volume threshold if the voice volume of the original voice signal exceeds the volume threshold.