摘要:
The present invention concerns a method for calibrating an array of receivers (ri), each receiver being configured for receiving a signal transmitted by at least one transmitter (si), and echoes of the transmitted signal as reflected by one or more reflective surfaces (w), said method comprising the following steps: sorting said echoes, by assigning each echo to a reflective surface or to a combination of reflective surfaces (w) calibrating said array of receivers (ri) based on said sorting.
摘要:
A method for determining the location of a transmitter (respectively a receiver) in a space defined by one or more reflective surfaces, including the steps of sending a signal from the transmitter (respectively from a set of transmitters); receiving by a set of receivers (respectively by a receiver) the transmitted signal and echoes of the transmitted signal reflected by the reflective surfaces; finding by a first computing module the location of the virtual sources (respectively virtual receivers) of the echoes; mirroring by a second computing module the virtual sources (respectively virtual receivers) into the space and obtained mirrored virtual sources (respectively mirrored virtual receivers); combining by a third computing module the mirrored virtual sources (respectively mirrored virtual receivers) so as to obtain location of the transmitter (respectively the receiver). This method makes use of echoes for localizing the source (respectively receiver) when there is no line of sight between the transmitter(s) and the receiver(s).
摘要:
A method for determining the geometry and/or the localisation of an object comprising the steps of: sending one or more signals by using one transmitter; receiving by one or more receivers the transmitted signals and the echoes of the transmitted signals as reflected by one or more reflective surfaces building by a computing module a first Euclidean Distance Matrix (EDM) comprising the mutual positions of the receivers; adding to the EDM matrix a new row and a new column, the new row and a new column comprising time of arrivals of said echoes and computing its rank or distance to an EDM matrix determining the geometry and/or the position of the object based on said rank or distance.
摘要:
A method for presenting to a user of a wearable audio device a modified audio scene together with additional information related to the audio scene, comprising: capturing audio signals with a plurality of microphones; outputting an audio signal with a plurality of acoustical transducers; processing the captured audio signals, the processing comprising filtering, equalization, echoes processing and/or beamforming; separating audio sources from the processed audio signals; selecting at least one separated audio source; classifying at least one said selected audio source; retrieving additional information related to the classified audio source; presenting the additional information to the user.
摘要:
An acoustic processing method for M acoustic receivers comprising the steps of: Determining a beamforming weight vector with M weights for the M acoustic receivers based on at least one the steering vector of at least one real acoustic source, on steering vectors of image sources of the at least one real acoustic source and on a first matrix depending on the covariance matrix of the noise and/or on at least one interfering sound source, wherein each of the image sources corresponds to one path of the acoustic signal between one of the at least one real source and one of the M acoustic receivers with at least one reflection; and linearly combining the M acoustic signals received at the M acoustic receivers on the basis of the M weights of the beamforming vector
摘要:
A method for determining the location of a transmitter (respectively a receiver) in a space defined by one or more reflective surfaces, including the steps of ending a signal from the transmitter (respectively from a set of transmitters); receiving by a set of receivers (respectively by a receiver) the transmitted signal and echoes of the transmitted signal reflected by the reflective surfaces; finding by a first computing module the location of the virtual sources (respectively virtual receivers) of the echoes; mirroring by a second computing module the virtual sources (respectively virtual receivers) into the space and obtained mirrored virtual sources (respectively mirrored virtual receivers); combining by a third computing module the mirrored virtual sources (respectively mirrored virtual receivers) so as to obtain location of the transmitter (respectively the receiver). This method makes use of echoes for localizing the source (respectively receiver) when there is no line of sight between the transmitter(s) and the receiver(s).