Nokia Technologies Oy

Oticon A/s

Tuomas Virtanen

Antti Johannes Eronen

Miikka Tapani Vilermo

Joonas Nikunen

Miska Matias Hannuksela

Jussi Artturi Leppänen

Mikko Tapio Tammi

Igor Danilo Diego Curcio

Niels Henrik Pontoppidan

Victor Popa

Elina Elisabet Helander

Toni Heittola

Thomas Barker

Annamaria Mesaros

Katariina Jutta Mahkonen

The application relates to a hearing device comprising a) an input unit for delivering a time varying electric input signal representing an audio signal comprising at least two sound sources, b) a cyclic analysis buffer unit of length A adapted for storing the last A audio samples, c) a cyclic synthesis buffer unit of length, where L is smaller than A, adapted for storing the last L audio samples, which are intended to be separated in individual sound sources, d) a database having stored recorded sound examples from said at least two sound sources, each entry in the database being termed an atom, the atoms originating from audio samples from first and second buffers corresponding in size to said synthesis and analysis buffer units, where for each atom, the audio samples from the first buffer overlaps with the audio samples from the second buffer, and where atoms originating from the first buffer constitute a reconstruction dictionary, and where atoms originating from the second buffer constitute an analysis dictionary. The application further relates to a method of separating audio sources, and e) a sound source separation unit for separating said electric input signal to provide separated signals representing said at least two sound sources, the sound source separation unit being configured to determine the most optimal representation (W) of the last A samples given the atoms in the analysis dictionary of the database, and to generate said at least two sound sources by combining atoms in the reconstruction dictionary of the database using the optimal representation (W). The invention may e.g. be used for hearing devices, e.g. hearing aids, headsets, ear phones, active ear protection systems, handsfree telephone systems, mobile telephones, teleconferencing systems, public address systems, classroom amplification systems, etc.

Hearing device comprising a low-latency sound source separation unit

A method comprising: receiving input signals for multiple channels; and parameterizing the received input signals into parameters defining multiple different object spectra and defining a distribution of the multiple different object spectra in the multiple channels.

Multi-channel encoding and/or decoding using non-negative tensor factorization

An apparatus comprising: an input configured to receive at least two audio signals; a frequency domain transformer configured to transform the at least two audio signals into a frequency domain representation of the at least two signals; a spatial covariance processor configured to generate an observed spatial covariance matrix from the frequency domain representations of the at least two audio signals; a beamformer configured to generate a spatial covariance matrix model comprising at least one beamformer kernel; a matrix factorizer configured to generate a linear magnitude mode! of audio objects; to combine the spatial covariance matrix model and the linear magnitude model; and further configured to determine at least one combination parameter, such that the at least one parameter for the combination attempts to optimise the combination; and a separator configured to cluster the audio objects based on the at least one combination parameter to create separated audio sources.

Spatial audio apparatus

An apparatus comprises a dereverberation module for generating a dereverberated audio signal based on an original audio signal containing reverberation, and an audio-analysis module for generating audio analysis data based on audio analysis of the original audio signal and audio analysis of the dereverberated audio signal.

Audio signal analysis

Various methods are described for generating an audio summary representing a location on a place exploration service. One example method may comprise receiving at least one audio file. The method may further comprise dividing the at least one audio file into one or more audio segments. Additionally, the method may comprise determining a representative audio segment for each of the one or more audio segments. The method may further comprise generating an audio summary of the at least one audio file by combining one or more of the representative audio segments of the one or more audio segments. Similar and related methods, apparatuses, and computer program products are also provided.

Method and apparatus for generating an audio summary of a location

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Tampere, Finland

Tuomas Virtanen