Method for determining a sound field

A non-transitory digital storage medium having stored thereon a computer program for performing a method for determining and/or monitoring a sound field in an enclosed space or at a target position within the enclosed space, the method comprising:

• acquiring data representing at least one acoustic measurement at a single one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position to acquire an interim value set;
• acquiring a room geometry of the enclosed space as second parameter describing the enclosed space;
• wherein acquiring the room geometry either comprises receiving the room geometry from an input or estimating the room geometry based on interim values of the interim value set;
• acquiring a surface impedance as first parameter describing the enclosed space, wherein acquiring the surface impedance comprises estimating the surface impedance based on the interim values of the interim value set;
• determining a model of the enclosed space based on the first parameter and the second parameter;
• and
• estimating a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for one or more positions within the enclosed space,
• wherein acquiring the surface impedance comprises an acoustic surface impedance estimation based on eigenvalue approximation;
• when the computer program is run by a computer.

A determiner for monitoring a sound field in an enclosed space or at a target position within the enclosed space, the determiner comprises:

• an interface for receiving data representing at least two acoustic measurement from a single one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position to acquire an interim value set;
• a processor configured to acquire a room geometry of the enclosed space as second parameter describing the enclosed space, wherein acquiring the room geometry either comprises receiving the room geometry from an input or estimating the room geometry based on interim values of the interim value set, and a surface impedance as first parameter describing the enclosed space, wherein acquiring the surface impedance comprises estimating the surface impedance based on the interim values of the interim value set;
• and to determine a model of the enclosed space based on the first and the second parameter;
• wherein the processor is further configured to estimate a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for one or more positions within the enclosed space;
• wherein acquiring the surface impedance comprises an acoustic surface impedance estimation based on eigenvalue approximation.

A method for determining and/or monitoring a sound field in an enclosed space or at a target position within the enclosed space, the method comprising:

• acquiring data representing at least one acoustic measurement at at least one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position or at a single one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position to acquire an interim value set;
• acquiring a room geometry of the enclosed space as second parameter describing the enclosed space;
• wherein acquiring the room geometry either comprises receiving the room geometry from an input or estimating the room geometry based on interim values of the interim value set;
• acquiring a surface impedance as first parameter describing the enclosed space, wherein acquiring the surface impedance comprises estimating the surface impedance based on the interim values of the interim value set;
• determining a model of the enclosed space based on the first and the second parameter;
• and
• estimating a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for one or more positions within the enclosed space;
• wherein acquiring the interim value set comprises a determination of one or more resonant frequencies and one or more damping coefficients, wherein determining the one or more resonant frequencies and one or more damping frequencies comprises fitting a function to an impulse response, wherein the function comprises the form of h(t)=Σ_(i=1){circumflex over ( )}MA_i e{circumflex over ( )}(σ_i t) cos(ω_i t+ϕ_i), where M is the number of modes, A_i is the amplitude of modular component, σ_i is the damping coefficient, ω_i is the resonant frequency, and ϕ_i is the phase;
• or wherein acquiring the surface impedance comprises an acoustic surface impedance estimation based on eigenvalue approximation.

A determiner for determining and/or monitoring a sound field in an enclosed space or at a target position within the enclosed space, the determiner comprises:

• an interface for receiving data representing at least one acoustic measurement from at least one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position or from a single one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position to acquire an interim value set;
• a processor configured to acquire a room geometry of the enclosed space as second parameter describing the enclosed space, wherein acquiring the room geometry either comprise receiving the room geometry from an input or estimating the room geometry based on interim values of the interim value set, and a surface impedance as first parameter describing the enclosed space, wherein acquiring the surface impedance comprises estimating the surface impedance based on the interim values of the interim value set;
• and to determine a model of the enclosed space based on the first and the second parameter;
• wherein the processor is further configured to estimate a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for one or more positions within the enclosed space;
• wherein acquiring the interim value set comprises a determination of one or more resonant frequencies and one or more damping coefficients, wherein determining the one or more resonant frequencies and one or more damping frequencies comprises fitting a function to an impulse response, wherein the function comprises the form of h(t)=Σ_(i=1){circumflex over ( )}MA_i e{circumflex over ( )}(σ_i t) cos(ω_i t+ϕ_i), where M is the number of modes, A_i is the amplitude of modular component, σ_i is the damping coefficient, ω_i is the resonant frequency, and ϕ_i is the phase;
• or wherein acquiring the surface impedance comprises an acoustic surface impedance estimation based on eigenvalue approximation.

A method for determining and/or monitoring a sound field in an enclosed space or at a target position within the enclosed space, the method comprising:

• acquiring data representing at least one acoustic measurement at at least one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position or at a single one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position to acquire an interim value set;
• acquiring a room geometry of the enclosed space as second parameter describing the enclosed space;
• wherein acquiring the room geometry comprises estimating the room geometry based on interim values of the interim value set;
• acquiring a surface impedance as first parameter describing the enclosed space, wherein acquiring the surface impedance comprises estimating the surface impedance based on the interim values of the interim value set;
• determining a model of the enclosed space based on the first and the second parameter;
• and
• estimating a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for one or more positions within the enclosed space;
• wherein acquiring the surface impedance comprises an acoustic surface impedance estimation based on eigenvalue approximation.

A determiner for determining and/or monitoring a sound field in an enclosed space or at a target position within the enclosed space, the determiner comprises:

• an interface for receiving data representing at least one acoustic measurement from at least one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position or from a single one measurement position within the enclosed space comprising an unknown acoustic environment and/or an unknown single one measurement position to acquire an interim value set;
• a processor configured to acquire a room geometry of the enclosed space as second parameter describing the enclosed space, wherein acquiring the room geometry comprises estimating the room geometry based on interim values of the interim value set, and a surface impedance as first parameter describing the enclosed space, wherein acquiring the surface impedance comprises estimating the surface impedance based on the interim values of the interim value set;
• and to determine a model of the enclosed space based on the first and the second parameter;
• wherein the processor is further configured to estimate a sound field throughout the enclosed space based on the model of the enclosed space, the sound field describing a sound characteristic for one or more positions within the enclosed space;
• wherein acquiring the surface impedance comprises an acoustic surface impedance estimation based on eigenvalue approximation.