# US 10,121,489 B1 · Method, device, and non-transitory computer readable storage medium for processing audio signal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,121,489 B1 - Document ID: US10121489B1 - Status: Granted - Kind: B1 - Application number: 15/655,913 - Filed: 2017-07-21 - Granted: 2018-11-06 - Earliest claimed: 2017-07-21 - Assignees: HTC Corporation - Applicants: HTC Corporation - Inventors: Chun-Min Liao - Web page: https://patentgrep.com/patent/US10121489B1 ## CPC - G10L 21/0208: Noise filtering - G10L 21/0272: Voice signal separating - G10L 21/0332: involving modification of waveforms - G10L 21/034: Automatic adjustment - G10L 2021/02087: {the noise being separate speech, e.g. cocktail party} - H03G 3/02: Manually-operated control {(H03G3/001 and H03G3/002 take precedence)} - H03G 3/3005: {in amplifiers suitable for low-frequencies, e.g. audio amplifiers (H03G3/32, H03G3/34 take precedence)} - G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING - H03G: CONTROL OF AMPLIFICATION ## Abstract A processing method includes acquiring an audio signal, magnifying one or more first portions of the audio signal in response to one or more magnitudes of the one or more first portions of the audio signal are lower than a predetermined threshold, deforming one or more second portions of the audio signal in response to one or more magnitudes of the one or more second portions of the audio signal are greater than the predetermined threshold, and performing a noise reduction to the one or more deformed second portions of the audio signal to reduce the one or more deformed second portions of the audio signal. ## Claims ### Claim 1 An audio signal processing method, comprising: acquiring an audio signal; magnifying one or more first portions of the audio signal in response to one or more magnitudes of the one or more first portions of the audio signal are lower than a predetermined threshold; performing a modulo operation to one or more second portions of the audio signal in response to one or more magnitudes of the one or more second portions of the audio signal are greater than the predetermined threshold; and performing a noise reduction to the one or more second portions of the audio signal obtained by performing the modulo operation to reduce the one or more second portions of the audio signal obtained by performing the modulo operation. ### Claim 2 (depends on 1) The audio signal processing method as claimed in claim 1, wherein the operation of performing the modulo operation to the one or more second portions of the audio signal further comprises: magnifying the one or more second portions of the audio signal; and performing the modulo operation to the one or more magnified second portions of the audio signal. ### Claim 3 (depends on 2) The audio signal processing method as claimed in claim 2, wherein a gain of magnifying the one or more second portions of the audio signal is identical to a gain of magnifying the one or more first portions of the audio signal. ### Claim 4 (depends on 2) The audio signal processing method as claimed in claim 2, wherein a divisor of the modulo operation is equal to a product of the predetermined threshold and a gain of magnifying the one or more second portions of the audio signal. ### Claim 5 (depends on 1) The audio signal processing method as claimed in claim 1, wherein the operations of magnifying the one or more first portions of the audio signal and performing the modulo operation to the one or more second portions of the audio signal are performed by using identical mathematical function. ### Claim 6 (depends on 1) The audio signal processing method as claimed in claim 1 further comprising: performing an auto gain control to the audio signal to normalize the audio signal. ### Claim 7 An audio signal processing electronic device, comprising: one or more processing components; a memory electrically connected to the one or more processing components; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processing components, the one or more programs comprising instructions for: acquiring an audio signal; magnifying one or more first portions of the audio signal in response to one or more magnitudes of the one or more first portions of the audio signal are lower than a predetermined threshold; performing a modulo operation to one or more second portions of the audio signal in response to one or more magnitudes of the one or more second portions of the audio signal are greater than the predetermined threshold; and performing a noise reduction to the one or more second portions of the audio signal obtained by performing the modulo operation to reduce the one or more second portions of the audio signal obtained by performing the modulo operation. ### Claim 8 (depends on 7) The audio signal processing electronic device as claimed in claim 7, wherein the one or more programs further comprises instructions for: magnifying the one or more second portions of the audio signal; and performing the modulo operation to the one or more magnified second portions of the audio signal. ### Claim 9 (depends on 8) The audio signal processing electronic device as claimed in claim 8, wherein a gain of magnifying the one or more second portions of the audio signal is identical to a gain of magnifying the one or more first portions of the audio signal. ### Claim 10 (depends on 8) The audio signal processing electronic device as claimed in claim 8, wherein a divisor of the modulo operation is equal to a product of the predetermined threshold and a gain of magnifying the one or more second portions of the audio signal. ### Claim 11 (depends on 7) The audio signal processing electronic device as claimed in claim 7, wherein the operations of magnifying the one or more first portions of the audio signal and performing the modulo operation to the one or more second portions of the audio signal are performed by using identical mathematical function. ### Claim 12 (depends on 7) The audio signal processing electronic device as claimed in claim 7, wherein the one or more programs further comprises instructions for: performing an auto gain control to the audio signal to normalize the audio signal. ### Claim 13 A non-transitory computer readable storage medium storing one or more programs comprising instructions, which when executed, causes one or more processing components to perform operations comprising: acquiring an audio signal; magnifying one or more first portions of the audio signal in response to one or more magnitudes of the one or more first portions of the audio signal are lower than a predetermined threshold; performing a modulo operation to one or more second portions of the audio signal in response to one or more magnitudes of the one or more second portions of the audio signal are greater than the predetermined threshold; and performing a noise reduction to the one or more second portions of the audio signal obtained by performing the modulo operation to reduce the one or more second portions of the audio signal obtained by performing the modulo operation. ### Claim 14 (depends on 13) The non-transitory computer readable storage medium as claimed in claim 13 comprising instructions, which when executed, causes one or more processing components to further perform operations comprising: magnifying the one or more second portions of the audio signal; and performing the modulo operation to the one or more magnified second portions of the audio signal. ### Claim 15 (depends on 14) The non-transitory computer readable storage medium as claimed in claim 14, wherein a gain of magnifying the one or more second portions of the audio signal is identical to a gain of magnifying the one or more first portions of the audio signal. ### Claim 16 (depends on 14) The non-transitory computer readable storage medium as claimed in claim 14, wherein a divisor of the modulo operation is equal to a product of the predetermined threshold and a gain of magnifying the one or more second portions of the audio signal. ### Claim 17 (depends on 13) The non-transitory computer readable storage medium as claimed in claim 13, wherein the operations of magnifying the one or more first portions of the audio signal and performing the modulo operation to the one or more second portions of the audio signal are performed by using identical mathematical function.