Apparatus and method for providing call quality information

1. A method comprising:

by a receiving terminal,

receiving an encoded call signal and bandwidth information on the encoded call signal from a transmitting terminal;

decoding the received encoded call signal at a first reference sampling rate;

resampling the decoded call signal at a sampling rate supported by an outputter that is included in or connected to the receiving terminal to output the resampled call signal from the receiving terminal; and

generating call quality information based on at least one of the bandwidth information, the first reference sampling rate, and the sampling rate supported by the outputter, wherein

the encoded call signal is a signal having been generated by sampling an input signal input through an inputter, included in or connected to the transmitting terminal to input the input signal to the transmitting terminal, at a second reference sampling rate and by encoding the sampled input signal, and

the bandwidth information is based on the second reference sampling rate and a sampling rate supported by the inputter.

2. A method comprising:

by a receiving terminal,

receiving an encoded call signal and bandwidth information on the encoded call signal from a transmitting terminal;

decoding the received encoded call signal at a first reference sampling rate;

resampling the decoded call signal at a sampling rate supported by an outputter that is included in or connected to the receiving terminal to output the resampled call signal from the receiving terminal; and

generating call quality information based on at least one of the bandwidth information, the first reference sampling rate, and the sampling rate supported by the outputter, wherein

the encoded call signal is a signal having been generated by decoding content prestored in the transmitting terminal or provided from an external content provider to the transmitting terminal, sampling the decoded content at a second reference sampling rate, and encoding the sampled content, and

the bandwidth information is based on the second reference sampling rate and a sampling rate at which the content is decoded.

3. The method of claim 1 , wherein the bandwidth information comprises information on a smaller bandwidth between a bandwidth indicated by the second reference sampling rate and a bandwidth indicated by the sampling rate supported by the inputter.

4. The method of claim 1 , wherein the bandwidth information comprises information regarding a wideband (WB), information regarding a super-wideband (SWB), or information regarding a full band (FB).

5. A method comprising:

by a receiving terminal,

receiving an encoded call signal and bandwidth information on the encoded call signal from a transmitting terminal;

decoding the received encoded call signal at a first reference sampling rate;

resampling the decoded call signal at a sampling rate supported by an outputter that is included in or connected to the receiving terminal to output the resampled call signal from the receiving terminal; and

generating call quality information based on at least one of the bandwidth information, the first reference sampling rate, and the sampling rate supported by the outputter, wherein,

when the sampling rate supported by the outputter is different from the first reference sampling rate, the call quality information comprises information on a minimum bandwidth among a first bandwidth indicated by the bandwidth information, a second bandwidth indicated by the first reference sampling rate, and a third bandwidth indicated by the sampling rate supported by the outputter, and

when the sampling rate supported by the outputter is identical to the first reference sampling rate, the call quality information comprises information on a smaller bandwidth between the first bandwidth and the second bandwidth.

6. The method of claim 1 , further comprising:

by the receiving terminal,

outputting the resampled call signal through the outputter; and

displaying the call quality information,

wherein the displayed call quality information comprises information on a call quality related to a bandwidth used for a call between the transmitting terminal and the receiving terminal.

7. A method comprising:

by a receiving terminal,

receiving an encoded call signal and bandwidth information on the encoded call signal from a transmitting terminal;

decoding the received encoded call signal at a first reference sampling rate;

determining whether a sampling rate supported by an outputter that is included in or connected to the receiving terminal is different from the first reference sampling rate;

in response to the determining that the sampling rate supported by the outputter is different from the first reference sampling rate,

resampling the decoded call signal at the sampling rate supported by the outputter, and

generating call quality information based on at least one of the bandwidth information, the first reference sampling rate, and the sampling rate supported by the outputter.

8. The method of claim 1 , wherein the first reference sampling rate is based on at least one of a performance of the receiving terminal and a setting of a service provider that provides a call between the transmitting terminal and the receiving terminal.

9. A non-transitory computer-readable record medium storing instructions that, when executed by a processor, cause the processor to perform the method of claim 1 .

10. An electronic device of comprising:

at least one memory; and

at least one processor, coupled to the at least one memory, to perform a process comprising:

receiving an encoded call signal and bandwidth information on the encoded call signal from a transmitting terminal;

decoding the received encoded call signal at a first reference sampling rate;

resampling the decoded call signal at a sampling rate supported by an outputter that is associated with the electronic device to output the resampled call signal from the electronic device; and

generating call quality information based on at least one of the bandwidth information, the first reference sampling rate, and the sampling rate supported by the outputter, wherein

the received encoded call signal is a signal having been generated by sampling an input signal input through an inputter, included in or connected to the transmitting terminal to input the input signal to the transmitting terminal, at a second reference sampling rate and by encoding the sampled input signal, and

the bandwidth information is based on the second reference sampling rate and a sampling rate supported by the inputter.

11. An electronic device comprising:

at least one memory; and

at least one processor, coupled to the at least one memory, to perform a process comprising:

receiving an encoded call signal and bandwidth information on the encoded call signal from a transmitting terminal;

decoding the received encoded call signal at a first reference sampling rate;

resampling the decoded call signal at a sampling rate supported by an outputter that is associated with the electronic device to output the resampled call signal from the electronic device; and

generating call quality information based on at least one of the bandwidth information, the first reference sampling rate, and the sampling rate supported by the outputter, wherein

the received encoded call signal is a signal having been generated by decoding content prestored in the transmitting terminal or provided from an external content provider to the transmitting terminal, sampling the decoded content at a second reference sampling rate, and encoding the sampled content, and

the bandwidth information is based on the second reference sampling rate and a sampling rate at which the content is decoded.

12. The electronic device of claim 10 , wherein:

the process further comprises outputting the resampled call signal through the outputter,

the electronic device further comprises a display configured to display the call quality information, and

the displayed call quality information comprises information on a call quality related to a bandwidth used for a call between the transmitting terminal and the receiving terminal.

13. An electronic device comprising:

at least one memory; and

at least one processor, coupled to the at least one memory, to perform a process comprising:

receiving an encoded call signal and bandwidth information on the encoded call signal from a transmitting terminal;

decoding the received encoded call signal at a first reference sampling rate;

resampling the decoded call signal at a sampling rate supported by an outputter that is associated with the electronic device to output the resampled call signal from the electronic device; and

generating call quality information based on at least one of the bandwidth information, the first reference sampling rate, and the sampling rate supported by the outputter, wherein,

when the sampling rate supported by the outputter is different from the first reference sampling rate, the generating generates, as the call quality information, information on a minimum bandwidth among a first bandwidth indicated by the bandwidth information, a second bandwidth indicated by the first reference sampling rate, and a third bandwidth indicated by the sampling rate supported by the outputter, and

when the sampling rate supported by the outputter is identical to the first reference sampling rate, the generating generates, as the call quality information, information on a smaller bandwidth between the first bandwidth and the second bandwidth.

14. The electronic device of claim 10 , wherein the first reference sampling rate is based on at least one of a performance of the receiving terminal and a setting of a service provider that provides a call between the transmitting terminal and the receiving terminal.

15. A method comprising:

by a transmitting terminal,

resampling an input signal at a reference sampling rate, wherein

the input signal having been received by the transmitting terminal from an inputter, included in or connected to the transmitting terminal to input the input signal to the transmitting terminal, and then, prior to the resampling, having been sampled at a sampling rate supported by the inputter, or

the input signal having been generated by decoding content prestored in the transmitting terminal or provided from an external content provider to the transmitting terminal;

encoding the resampled input signal; and

transmitting, to a receiving terminal, the encoded input signal and bandwidth information, wherein

when the input signal was received by the transmitting terminal from the inputter and then, prior to the resampling, was sampled at the sampling rate supported by the inputter, the bandwidth information is based on the reference sampling rate and the sampling rate supported by the inputter,

when input signal was generated by decoding content prestored in the transmitting terminal or provided from an external content provider to the transmitting terminal, the bandwidth information is based on a sampling rate at which the content was decoded, and

the encoded input signal and the bandwidth information transmitted to the receiving terminal are for use by the receiving terminal to generate information on a call quality related to a bandwidth used for a call between the transmitting terminal and the receiving terminal.

16. The method of claim 15 , wherein

when the input signal was received by the transmitting terminal from the inputter and then, prior to the resampling, was sampled at the sampling rate supported by the inputter, the bandwidth information comprises information on a smaller bandwidth between a bandwidth indicated by the reference sampling rate and a bandwidth indicated by the sampling rate supported by the inputter, and

when input signal was generated by decoding content prestored in the transmitting terminal or provided from an external content provider to the transmitting terminal, the bandwidth information comprises the sampling rate at which the content is decoded.