An electronic device according to various embodiments includes: a microphone, a memory, and a processor, wherein the memory stores instructions which, when executed, cause the processor to: control the electronic device to copy a signal acquired from the microphone, record a first signal, and perform voice recognition on a second signal based on a recording operation using the microphone being executed, determine an editing section including unnecessary information in the first signal based on a voice recognition result for the second signal, and generate recording data by editing the unnecessary information included in the determined editing section in the first signal.