# US 2014/0193019 A1 · Apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193019 A1 - Document ID: US20140193019A1 - Status: Published application - Kind: A1 - Application number: 14/126,314 - Filed: 2011-06-20 - Published: 2014-07-10 - Earliest claimed: 2011-06-20 - Assignees: Nokia Corporation - Inventors: Qifeng Yan; Ming Lei; Zhichang Wang; Jyri Salomaa; Zhen Liu; Koray Ozcan - Web page: https://patentgrep.com/patent/US20140193019A1 ## CPC - H04R 1/2861: {using a back-loaded horn} - H04R 1/30: Combinations of transducers with horns, e.g. with mechanical matching means {, i.e. front-loaded horns}(horns in general G10K; {transducer enclosures or mountings using a back-loaded horn H04R1/2861; application of horns as guiding means to obtain a predetermined directivity characteristic H04R1/345}) - H04R 1/345: {for loudspeakers} - 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 An apparatus comprising: a first substantially horn shaped structure configured to couple and amplify sound from a first speaker of a further apparatus; and a second substantially horn shaped structure configured to couple and amplify sound from a second speaker of the further apparatus, wherein the first and second substantially horn shaped structure each comprise a mouth portion with a physical separation dimension greater than a physical separation dimension of the first and second speaker acoustic outlet of the further apparatus. ## Claims ### Claim at position 1 1-24. (canceled) ### Claim 25 An apparatus comprising: a first substantially horn shaped structure configured to couple and amplify sound from a first speaker of a further apparatus; and a second substantially horn shaped structure configured to couple and amplify sound from a second speaker of the further apparatus, wherein the first and second substantially horn shaped structure each comprise a mouth portion with a physical separation dimension greater than a physical separation dimension of a first and second speaker outlet of the further apparatus. ### Claim 26 (depends on 25) The apparatus as claimed in claim 25, wherein each of the first and second substantially horn shaped structure mouth portion has a cross sectional area greater than each of the first and second speaker acoustic outlet of the further apparatus cross sectional area. ### Claim 27 (depends on 26) The apparatus as claimed in claim 26, wherein each of the first and second substantially horn shaped structure throat portion has a cross sectional area which is one of: greater than each of the first and second speaker acoustic outlet of the further apparatus cross sectional area; substantially the same as each of the first and second speaker acoustic outlet of the further apparatus cross sectional area; and less than each of the first and second speaker acoustic outlet of the further apparatus cross sectional area. ### Claim 28 (depends on 25) The apparatus according to claim 25, wherein each substantially horn shaped structure comprises at least one of: a conical horn; an exponential horn; and a tractrix horn. ### Claim 29 (depends on 25) The apparatus as claimed in claim 25, wherein each substantially horn shaped structure is acting as an acoustic filter to tune the sound according to the frequency response of the further apparatus. ### Claim 30 (depends on 25) The apparatus as claimed in claim 25, further comprising: a first interface portion configured to seal a throat portion of the first substantially horn shaped structure to the first speaker outlet; and a second interface portion configured to seal a throat portion of the second substantially horn shaped structure to the second speaker outlet. ### Claim 31 (depends on 30) The apparatus as claimed in claim 30, wherein each interface portion can further releaseably mechanically couple the further apparatus to the apparatus. ### Claim 32 (depends on 25) The apparatus as claimed in claim 25, further comprising a locating portion configured to releaseably mechanically couple the further apparatus to the apparatus. ### Claim 33 (depends on 25) The apparatus as claimed in claim 25, further comprising: a first part comprising at least two audio input windows; and a second part comprising at least two audio output windows, wherein the first part and the second part form a structure with two separate voids, the first void forming the first substantially horn shaped structure located between the first part first audio input window and the second part first audio output window and the second void forming the second substantially horn shaped structure defined between the first part second audio input window and the second part second audio output window. ### Claim 34 (depends on 25) The apparatus as claimed in claim 25, further comprising an indicator, wherein the indicator comprises at least one of: a plug configured to interface with the further apparatus; at least one pin configured to interface with the further apparatus; a cover portion configured to interface with the further apparatus; and a radio frequency identifier, wherein the indicator is configured to identify the apparatus to the further apparatus. ### Claim 35 (depends on 25) The apparatus as claimed in claim 25, wherein the first substantially horn shaped structure is dimensionally different from the second substantially horn shaped structure. ### Claim 36 (depends on 1) A portable apparatus comprising: a first speaker; a second speaker; and a detector configured to determine the portable apparatus is coupled to the apparatus as claimed in claim 1. ### Claim 37 (depends on 36) The portable apparatus as claimed in claim 36, wherein the detector comprises at least one of: a light sensor configured to detect a cover portion on the apparatus; a radio frequency identifier sensor configured to detect a radio frequency identifier on the apparatus; a socket configured to receive a plug or pin on the apparatus; a keypad configured to receive a plug or pin on the apparatus; and at least one microswitch configured to receive a plug or at least one pin on the apparatus; an electrical impedance monitor coupled to each speaker. ### Claim 38 (depends on 36) The portable apparatus as claimed in claim 36, further comprising a digital signal processor configured to output an audio signal to each speaker dependent on the detector. ### Claim 39 (depends on 38) The portable apparatus as claimed in claim 38, wherein the digital signal processor comprises a first speaker digital signal processor configured to output an audio signal to the first speaker dependent on the detector; and a second speaker digital signal processor configured to output a further audio signal to the second speaker dependent on the detector. ### Claim 40 (depends on 36) The portable apparatus as claimed in claim 36, wherein the detector is configured to determine dimensionally different horn shaped structures and control the digital signal processor to account for the difference between the different substantially horn shaped structures. ### Claim 41 (depends on 38) The portable apparatus as claimed in claim 38, wherein the digital signal processor comprises at least one of: an equalizer; an amplifier with variable gain; a volume level controller; a dynamic range controller; a bandwidth controller; a filter with a defined frequency response; a speaker/transducer protection controller; and a loudness controller. ### Claim 42 (depends on 38) The portable apparatus as claimed in claim 38, wherein the digital signal processor is configured to modify the frequency response and/or loudness of the audio signal dependent on the detector. ### Claim 43 (depends on 36) The portable apparatus as claimed in claim 36, wherein the detector is configured to detect the type of the apparatus. ### Claim 44 (depends on 36) The portable apparatus as claimed in claim 36, wherein the detector is a user input to the portable apparatus.