# US 2017/0289729 A1 · Method and device for processing binaural audio signal generating additional stimulation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0289729 A1 - Document ID: US20170289729A1 - Status: Published application - Kind: A1 - Application number: 15/629,688 - Filed: 2017-06-21 - Published: 2017-10-05 - Earliest claimed: 2014-12-30 - Assignees: Gaudi Audio Lab, Inc. - Applicants: Gaudi Audio Lab, Inc. - Inventors: Hyunoh OH; Yonghyun BAEK - Web page: https://patentgrep.com/patent/US20170289729A1 ## CPC - H04S 7/304: {For headphones} - H04S 3/004: {For headphones} - H04S 5/00: Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation - H04R 2460/13: Hearing devices using bone conduction transducers - H04S 2400/01: Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved - H04S 2400/11: Positioning of individual sound objects, e.g. moving airplane, within a sound field (H04S2420/13 takes precedence) - H04S 2420/01: Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD] - H04S: STEREOPHONIC SYSTEMS - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract Disclosed is a binaural audio signal processing device. The binaural audio signal processing device includes a binaural renderer and an extra exciter. The binaural renderer receives an audio signal, and outputs a binaural-rendered audio signal by performing binaural rendering on the received audio signal. The extra exciter generates a stimulation to a body of a user, wherein the stimulation corresponds to the binaural-rendered audio signal. ## Claims ### Claim 1 An audio signal processing device comprising: a binaural renderer configured to receive an audio signal and output a binaural-rendered audio signal by performing binaural rendering based on the received audio signal; and an extra exciter configured to generate a stimulation to a body of a user based on a position of a sound source simulated by the binaural-rendered audio signal, wherein the stimulation corresponds to the binaural-rendered audio signal. ### Claim 2 (depends on 1) The audio signal processing device of claim 1, wherein the extra exciter comprises a plurality of excitation transducers, selects at least one of the plurality of excitation transducers based on the position of the sound source simulated by the binaural-rendered audio signal, and generates the stimulation through the selected at least one excitation transducer. ### Claim 3 (depends on 1) The audio signal processing device of claim 1, wherein the extra exciter generates the stimulation based on a distance between the user and the position of the sound source simulated by the binaural-rendered audio signal. ### Claim 4 (depends on 1) The audio signal processing device of claim 1, wherein the extra exciter generates the stimulation in at least one of a case where an interaural level difference of the binaural-rendered audio signal is smaller than a first reference value and a case where an interaural time difference of the binaural-rendered audio signal is smaller than a second reference value. ### Claim 5 (depends on 1) The audio signal processing device of claim 1, wherein the extra exciter generates an additional stimulation based on a frequency value of a notch included in a head related transfer function (HRTF) applied to the binaural rendering. ### Claim 6 (depends on 5) The audio signal processing device of claim 5, wherein the extra exciter determines whether to generate the additional stimulation based on the frequency value of the notch included in the HRTF. ### Claim 7 (depends on 5) The audio signal processing device of claim 5, wherein the extra exciter determines a position at which the additional stimulation is to be generated, based on the frequency value of the notch included in the HRTF. ### Claim 8 (depends on 1) The audio signal processing device of claim 1, wherein the received audio signal comprises a first audio signal output through the extra exciter and a second audio signal output through the binaural renderer, wherein the second audio signal is generated based on an audio signal obtained by subtracting the first audio signal from the received audio signal. ### Claim 9 (depends on 8) The audio signal processing device of claim 8, wherein the binaural renderer separates the received audio signal into the first audio signal and the second audio signal according to a frequency characteristic of the received audio signal. ### Claim 10 (depends on 8) The audio signal processing device of claim 8, wherein the binaural renderer applies, to the received audio signal, a head related transfer function (HRTF) for modeling a remaining region excepting a frequency band corresponding to the first audio signal. ### Claim 11 (depends on 1) The audio signal processing device of claim 1, wherein the stimulation is synchronized with a time of the binaural-rendered audio signal. ### Claim 12 (depends on 1) The audio signal processing device of claim 1, wherein the extra exciter generates the stimulation based on a magnitude of the binaural-rendered audio signal. ### Claim 13 (depends on 1) The audio signal processing device of claim 1, wherein the extra exciter generates the stimulation according to a scaling value applied to a step of discriminating a magnitude of the stimulation. wherein the scaling value is determined based on a noise of an external environment of the user. ### Claim 14 A method for operating an audio signal processing device, the method comprising the steps of: receiving an audio signal; outputting a binaural-rendered audio signal by performing binaural rendering based on the received audio signal; and generating a stimulation to a body of a user based on a position of a sound source simulated by the binaural-rendered audio signal, wherein the stimulation corresponds to the binaural-rendered audio signal.