Patent ID: 8504358

Claim:
A voice recording method of a voice recording equipment, comprising: (a) computing threshold values T 1 and T 2 of an initial surrounding environment of the voice recording equipment, wherein T 1 =P 1 +δ_speak, T 2 =P 1 +δ_silence, δ_speak is a maximum intensity of voice data of a speaker, δ_silence is a minimum intensity of the voice data of the speaker, and P 1 is a sound intensity of the initial surrounding environment; (b) receiving the voice data from the speaker using a microphone of the voice recording equipment to make a recording; (c) determining if a current surrounding environment of the voice recording equipment is different from the initial surrounding environment of the voice recording equipment by: (c1) computing a sound intensity P 2 of the current surrounding environment of the voice recording equipment, and computing a value of |P 2 −T 1 |; (c2) repeating (c1) after a predetermined time interval for n times, wherein n is a positive integer; (c3) selecting one or more sound intensities P 2 which enable the value of |P 2 −T 1 | to be greater than a predetermined value; (c4) computing a count of the one or more selected sound intensities P 2 ; (c5) determining that the current surrounding environment of the voice recording equipment is different from the initial surrounding environment of the voice recording equipment upon the condition that count>=n/2; or (c6) determining that the current surrounding environment of the voice recording equipment is the same as the initial surrounding environment of the voice recording equipment upon the condition that count<n/2; (d′) updating the threshold values T 1 and T 2 upon the condition that the current surrounding environment of the voice recording equipment is different from the initial surrounding environment of the voice recording equipment; and (d) stopping recording of the voice data and informing the speaker that the voice data is not useful upon the condition that an intensity of the voice data is less than or equal to the threshold value T 2 ; or (e) storing the voice data into a storage unit upon the condition that the intensity of the voice data is greater than the threshold value T 2 .