Patents by Inventor Mikko Tammi

Mikko Tammi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11457326
    Abstract: According to an example embodiment, a method for processing a multi-channel input audio signal representing a sound field into a multi-channel output audio signal representing said sound field in accordance with a predefined loudspeaker layout is provided, the method comprising the following for at least one frequency band: obtaining spatial audio parameters that are descriptive of spatial characteristics of said sound field; estimating a signal energy of the sound field represented by the multi-channel input audio signal; estimating, based on said signal energy and the obtained spatial audio parameters, respective output signal energies for channels of the multi-channel output audio signal according to said predefined loudspeaker layout; determining a maximum output energy as the largest of the output signal energies across channels of said multi-channel output audio signal; and deriving, on basis of said maximum output energy, a gain value for adjusting sound reproduction gain in at least one of said channe
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: September 27, 2022
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Mikko-Ville Laitinen, Mikko Tammi, Jussi Virolainen, Jorma Mäkinen
  • Publication number: 20220260664
    Abstract: According to an example embodiment, a method for audio focusing is provided, the method comprising: receiving a multi-channel audio signal that represents sounds in sound directions that correspond to respective positions in an image area of an image; receiving an indication of an audio focus direction that corresponds to a first position in the image area; selecting a primary sound direction from a plurality of different available candidate directions, wherein said plurality of different available candidate directions comprise said audio focus direction and one or more offset candidate directions and wherein each offset candidate direction corresponds to a respective candidate offset from said first position in the image area; and deriving, based on said multi-channel audio signal in dependence of the selected primary sound direction, an output audio signal where sounds in sound directions defined via the selected primary sound direction are emphasized in relation to sounds in sound directions other than tho
    Type: Application
    Filed: May 19, 2020
    Publication date: August 18, 2022
    Applicant: NOKIA TECHNOLOGIES OY
    Inventors: Miikka VILERMO, Mikko TAMMI, Toni MÄKINEN, Juha VILKAMO
  • Patent number: 11328735
    Abstract: An apparatus for spatial audio signal encoding, the apparatus comprising at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: determine, for two or more audio signals, at least one spatial audio parameter for providing spatial audio reproduction, the at least one spatial audio parameter comprising a direction parameter with an elevation and an azimuth component; define a spherical grid generated by covering a sphere with smaller spheres, wherein the centres of the smaller spheres define points of the spherical grid; and convert the elevation and azimuth component of the direction parameter to an index value based on the defined spherical grid.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: May 10, 2022
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Lasse Juhani Laaksonen, Anssi Sakari Rämö, Adriana Vasilache, Mikko Tammi, Miikka Vilermo
  • Patent number: 11310588
    Abstract: An audio processing technique including obtaining a multi-channel audio signal, a first sound direction of interest and a second sound direction of interest; determining, for one or more frequency bands, a respective first range of sound directions encompassed by a first focus pattern directed to said first sound direction of interest and a respective second range of sound directions encompassed by a second focus pattern directed to said second sound direction of interest; determining, for said one or more frequency bands, respective overlap between the first and second ranges of sound directions; and deriving, based on the multi-channel audio signal and in accordance with said first and second focus patterns, a processed audio signal where sounds in said first and second sound directions of interest are emphasized in relation to sounds in other sound directions, said derivation including controlling emphasis in dependence of the determined overlap.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: April 19, 2022
    Assignee: Nokia Technologies Oy
    Inventors: Toni Makinen, Miikka Vilermo, Mikko Tammi, Jussi Virolainen
  • Publication number: 20220060824
    Abstract: According to an example embodiment, a method for processing two or more microphone signals is provided. The method includes deriving a first captured audio signal having one or more channels based on the two or more microphone signals received from respective two or more microphones in accordance with capture control data that identifies at least one characteristic for derivation of the first captured audio signal; storing at least part of the capture control data and intermediate audio data derived based on the two or more received microphone signals; deriving modified capture control data as a combination of the stored capture control data and user-definable post-capture control data that identifies at least one characteristic for derivation of a second captured audio signal; and deriving the second captured audio signal having one or more channels based on said intermediate audio data in accordance with the modified capture control data.
    Type: Application
    Filed: January 2, 2020
    Publication date: February 24, 2022
    Inventors: Jussi VIROLAINEN, Juha VILKAMO, Kai HAVUKAINEN, Mikko TAMMI, Toni MAKINEN, Juha OJANPERA
  • Patent number: 11210518
    Abstract: An apparatus configured: based on a point of interest identified in one or more instances of virtual reality content comprising at least visual imagery and data to provide a virtual reality space in which the visual imagery is displayed; and based on context information for at least one of the instances of the virtual reality content, the context information defining the extent of a virtual sub-volume of the virtual reality space that includes the point of interest; to provide for display of a virtual-reality-content-review-space to a user comprising a space in which a VR preview of the instances of virtual reality content is displayed at a location spaced from a point of view of the user, the or each VR preview comprising the respective sub-volume defined by the context information for providing the user with an understanding of the virtual reality space around the point of interest.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: December 28, 2021
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Lasse Laaksonen, Miikka Vilermo, Mikko Tammi, Arto Lehtiniemi
  • Publication number: 20210360362
    Abstract: According to an example embodiment, a method for processing a multi-channel input audio signal representing a sound field into a multi-channel output audio signal representing said sound field in accordance with a predefined loudspeaker layout is provided, the method comprising the following for at least one frequency band: obtaining spatial audio parameters that are descriptive of spatial characteristics of said sound field; estimating a signal energy of the sound field represented by the multi-channel input audio signal; estimating, based on said signal energy and the obtained spatial audio parameters, respective output signal energies for channels of the multi-channel output audio signal according to said predefined loudspeaker layout; determining a maximum output energy as the largest of the output signal energies across channels of said multi-channel output audio signal; and deriving, on basis of said maximum output energy, a gain value for adjusting sound reproduction gain in at least one of said channe
    Type: Application
    Filed: June 8, 2018
    Publication date: November 18, 2021
    Applicant: NOKIA TECHNOLOGIES OY
    Inventors: Mikko-Ville LAITINEN, Mikko TAMMI, Jussi VIROLAINEN, Jorma MÄKINEN
  • Publication number: 20210343296
    Abstract: The application relates to apparatus, methods and computer programs for controlling band limited audio objects. The example apparatus includes circuitry configured for: obtaining a band limited audio object comprising one or more parameters; obtaining spatial metadata associated with the band limited audio object; determining a position of a user; and using the determined position of the user and the spatial metadata associated with the band limited audio object to control at least one of the parameters of the band limited audio object.
    Type: Application
    Filed: July 19, 2019
    Publication date: November 4, 2021
    Inventors: Miikka VILERMO, Mikko TAMMI, Mikko-Ville LAITINEN, Jussi VIROLAINEN, Juha VILKAMO
  • Publication number: 20210337339
    Abstract: A method, apparatus and computer program, the method comprising: receiving a plurality of input signals representing a sound space; using the received plurality of input signals to obtain spatial metadata corresponding to the sound space; using the received plurality of input signals to obtain a first spatial audio signal corresponding to the spatial metadata; and associating the first spatial audio signal with the spatial metadata to enable the spatial metadata to be used to process the first spatial audio signal to obtain a second spatial audio signal.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 28, 2021
    Applicant: NOKIA TECHNOLOGIES OY
    Inventors: Juha VILKAMO, Miikka VILERMO, Mikko TAMMI, Jussi VIROLAINEN
  • Patent number: 11094119
    Abstract: A method is provided, comprising: preventing rendering of specific audio in a virtual space to a user through virtual reality; enabling the user to explore the virtual space through user-perspective controlled virtual reality without hearing the specific audio; and in response to an interrupt, performing a visual transition to audio-visual content comprising the specific audio and visual content associated with the specific audio and then rendering specific audio and the visual content associated with the specific audio in the virtual space to the user through virtual reality.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: August 17, 2021
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Lasse Laaksonen, Miikka Vilermo, Arto Lehtiniemi, Mikko Tammi
  • Publication number: 20210250717
    Abstract: An apparatus including circuitry configured for: receiving at least two audio signals; determining at least one lower frequency effect parameter based on the at least two audio signals; determining at least one transport audio signal based on the at least two audio signals; controlling a transmission/storage of the at least one transport audio signal and the at least one lower frequency effect information such that a rendering based on the at least one transport audio signal and the at least one lower frequency effect information enables a determination of at least one low frequency effect channel.
    Type: Application
    Filed: June 12, 2019
    Publication date: August 12, 2021
    Inventors: Mikko-Ville LAITINEN, Milkka VILERMO, Mikko TAMMI, Jussi VIROLAINEN, Juha VILKAMO
  • Patent number: 11076253
    Abstract: An apparatus configured, based on virtual reality content for viewing in virtual reality, the virtual reality content comprising visual content for display in a three dimensional virtual reality space and spatial audio content comprising audio for presentation such that it is audibly perceived to originate from one or more particular directions in the virtual reality space corresponding to one or more points or regions in the visual content, the virtual reality content defining at least a ground level of said virtual reality space; and based on display of a birds-eye view of the virtual reality space to a user comprising a view of the visual content substantially downward towards said ground level from a point of view location in said virtual reality space elevated from said ground level; to provide for presentation of said spatial audio content with a spatial audio modification, the spatial audio modification configured to modify the one or more particular directions from which the user perceives the spatial
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: July 27, 2021
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Lasse Laaksonen, Miikka Vilermo, Mikko Tammi, Arto Lehtiniemi
  • Patent number: 11062716
    Abstract: An apparatus for spatial audio signal encoding, the apparatus comprising at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: determine, for two or more audio signals, at least one spatial audio parameter for providing spatial audio reproduction, the at least one spatial audio parameter comprising a direction parameter with an elevation and an azimuth component; define a spherical grid generated by covering a sphere with smaller spheres, the smaller spheres arranged in circles of spheres wherein a first circle of spheres comprises one of the smaller spheres located with a centre at an elevation of 90 degrees relative to a reference direction of the sphere; and convert the elevation and azimuth component of the direction parameter to an index value based on the defined spherical grid.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: July 13, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Lasse Juhani Laaksonen, Anssi Sakari Rämö, Adriana Vasilache, Mikko Tammi, Miikka Vilermo
  • Patent number: 11019448
    Abstract: An apparatus is disclosed, comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured with the processor to cause the apparatus to perform the following steps. In a first step, the spatial position of a user in a real world space is detected. In another step, one or more audio signals are provided to the user representing audio from spatially-distributed audio sources in a virtual space. In another step, responsive to detecting movement of the user's spatial position from within a first zone to within a second zone within the real world space, the audio signals for selected ones of the audio sources are modified based on their spatial position in the virtual space.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: May 25, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Lasse Laaksonen, Miikka Vilermo, Mikko Tammi, Arto Lehtiniemi
  • Publication number: 20210144467
    Abstract: An audio processing technique including obtaining a multi-channel audio signal, a first sound direction of interest and a second sound direction of interest; determining, for one or more frequency bands, a respective first range of sound directions encompassed by a first focus pattern directed to said first sound direction of interest and a respective second range of sound directions encompassed by a second focus pattern directed to said second sound direction of interest; determining, for said one or more frequency bands, respective overlap between the first and second ranges of sound directions; and deriving, based on the multi-channel audio signal and in accordance with said first and second focus patterns, a processed audio signal where sounds in said first and second sound directions of interest are emphasized in relation to sounds in other sound directions, said derivation including controlling emphasis in dependence of the determined overlap.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 13, 2021
    Inventors: Toni MAKINEN, Miikka Vilermo, Mikko Tammi, Jussi Virolainen
  • Patent number: 10932075
    Abstract: An apparatus comprising: a directional analyser configured to determine a directional component of at least two audio signals; an estimator configured to determine at least one virtual position or direction relative to the actual position of the apparatus; and a signal generator configured to generate at least one further audio signal dependent on the at least one virtual position or direction relative to the actual position of the apparatus and the directional component of at least two audio signals.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: February 23, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Mikko Tammi, Miikka Vilermo, Kemal Ugur
  • Patent number: 10897683
    Abstract: A method, apparatus and computer program wherein the method includes: obtaining at least three ambient audio signals wherein at least one of the ambient audio signals is to be processed with a first directional transfer function pair and at least one other of the ambient audio signals is to be processed with a second directional transfer function pair wherein the directional transfer function pairs to be used are based on target directions of the ambient audio signals; determining a change of the target direction for the at least one ambient audio signal to an updated target direction; selecting an updated directional transfer function pair associated with the updated target direction wherein the updated directional transfer function pair is selected from a plurality of directional transfer functions and the updated directional transfer function pair is more closely associated with the updated target direction than the first directional transfer function pair; and processing the at least one ambient audio sig
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: January 19, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Mikko-Ville Laitinen, Miikka Vilermo, Mikko Tammi
  • Patent number: 10873814
    Abstract: An apparatus including a predetermined shape, the apparatus including at least three microphones, wherein at least one pair from the at least three microphones comprises including two microphones which are separated by a shorter distance of the predetermined shape than at least one other microphone pair of the predetermined shape; and a processor configured to: receive at least three microphone audio signals from the at least three microphones; analyse at least the microphone audio signals from the two microphones to determine a directional ambiguity decision; and analyse the microphone audio signals from at least one of the other microphone pairs to determine at least one sound characteristic other than the direction ambiguity.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: December 22, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Juha Vilkamo, Miikka Vilermo, Mikko Tammi
  • Patent number: 10869155
    Abstract: Apparatus including a processor configured to: provide a position for at least one sound source relative to a reference position; analyse at least one input audio signal associated with the at least one sound source to determine at least one gain value based on the at least one input audio signal and the position for the at least one sound source relative to the reference position; and synthesize at least two output channels based on the at least one input audio signal, a directional transfer function pair, the at least one gain value and the position for the at least one sound source relative to the reference position.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: December 15, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Jorma Makinen, Mikko Tammi, Mikko-Ville Laitinen, Jussi Virolainen
  • Publication number: 20200321013
    Abstract: An apparatus for spatial audio signal encoding, the apparatus comprising at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: determine, for two or more audio signals, at least one spatial audio parameter for providing spatial audio reproduction, the at least one spatial audio parameter comprising a direction parameter with an elevation and an azimuth component; define a spherical grid generated by covering a sphere with smaller spheres, the smaller spheres arranged in circles of spheres wherein a first circle of spheres comprises one of the smaller spheres located with a centre at an elevation of 90 degrees relative to a reference direction of the sphere; and convert the elevation and azimuth component of the direction parameter to an index value based on the defined spherical grid.
    Type: Application
    Filed: December 28, 2017
    Publication date: October 8, 2020
    Inventors: Lasse Juhani Laaksonen, Anssi Sakari Rämö, Adriana Vasilache, Mikko Tammi, Miikka Vilermo