Systems and methods for generating device-related transfer functions and device-specific room impulse responses

A computer-implemented method for generating a device-specific room impulse response (DSRIR) describing an acoustic characteristic of a device and a room as received by the device, wherein the device includes at least a first microphone, the method comprising:

• generating an at least first device-related transfer function (DRTF), wherein the at least first device-related transfer function describes the acoustic characteristic of the device as received by the at least first microphone, wherein generating the at least first device-related transfer function further comprises:
• obtaining a device mesh model representing a geometry of the device and the position of the at least first microphone on the device mesh model,
• arranging a digital representation of a device receiver array including a plurality of digital representations of device receivers around the device mesh model, such that a distance between any of the digital representations of the device receivers and the device mesh model is not smaller than a predetermined distance,
• determining, on the device mesh model, a first closest mesh element, which is closest to the at least first microphone,
• arranging a digital representation of a first source-correction microphone located at a first source distance from the first closest mesh element, wherein the first source distance is smaller than the predetermined distance,
• digitally emitting a first impulse signal using the first closest mesh element as a sound source,
• determining a first source correction signal using a wave-based solver, wherein the first source correction signal describes the first impulse signal as received at the first source-correction microphone,
• determining a plurality of first device impulse responses using a wave-based solver, wherein each first device impulse response describes an impulse response of the first impulse signal received at the respective device receiver,
• determining a plurality of first source-corrected device impulse responses by source-correcting each of the plurality of first device impulse responses using the first source correction signal,
• generating the at least first device-related transfer function of the device for the at least first microphone by combining the plurality of first source-corrected device impulse responses,
• determining an energy content for at least one frequency of the at least first device-related transfer function,
• generating a spatial room impulse response (SRIR), wherein the spatial room impulse response describes the acoustic characteristic of the room from at least one room sound source in the room and received at an at least one listening point in the room from at least one direction, wherein generating the spatial room impulse response further comprises:
• a obtaining a 3D room model representing a geometry of the room and at least one acoustic characteristic,
• arranging at least one digital representation of the at least one room sound source in the 3D room model,
• arranging a digital representation of a room receiver array including a plurality of digital representations of room receivers, wherein the room receiver array is centered on the at least one listening point in the 3D room model and wherein the plurality of digital representations of room receivers is determined based on the energy content for the at least one frequency of the at least first device-related transfer function,
• digitally emitting a room impulse signal from the at least one room sound source,
• determining a plurality of room impulse responses using at least a wave-based solver for at least one wave-based frequency, wherein each room impulse response describes the emitted room impulse signal as received at a corresponding one of the plurality of digital representations of room receivers,
• generating a spatial room impulse response based on the plurality of room impulse responses,
• generating the device-specific room impulse response (DSRIR) by combining the at least first device-related transfer function and the spatial room impulse response.