Patents Assigned to SDA Software Design Ahnert GmbH
  • Patent number: 11087031
    Abstract: The invention relates to a method for determining a configuration for a loudspeaker arrangement for radiating sound into a space, wherein the method comprises the following steps: providing an initial configuration having initial configuration parameters for a loudspeaker arrangement for radiating sound into a space in the computer, determining configurations having respectively associated configuration parameters by means of a target function-based optimisation method, wherein, proceeding from the initial configuration, in the computer a sound field for the space and/or parts thereof into which sound is to be radiated is determined iteratively to a candidate configuration by means of simulation, a value of a target function associated with the candidate configuration and the simulated sound field is determined and a new candidate configuration for the loudspeaker arrangement is selected, and selecting a configuration having configuration parameters from the iteratively determined candidate configurations in
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: August 10, 2021
    Assignee: SDA SOFTWARE DESIGN AHNERT GMBH
    Inventor: Stefan Feistel
  • Patent number: 9060222
    Abstract: The invention relates to a process for determining an averaged frequency-dependent transfer function for a perturbed linear time-invariant system by means of an evaluation device, wherein the process comprises providing frequency-dependent reference signals derived from excitations input in a linear time-invariant system, providing frequency-dependent measuring signals for the linear time-invariant system associated with the frequency-dependent reference signals, and determining an averaged frequency-dependent transfer function for the linear time-invariant system, in that, using signal deconvolution of mutually associated measuring and reference signals, frequency-dependent transfer functions are determined and the frequency-dependent transfer functions are averaged, and wherein during determination of the averaged frequency-dependent transfer function at least a part of the determined frequency-dependent transfer functions is included in the averaging corresponding to a respectively associated frequency-dep
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: June 16, 2015
    Assignee: SDA SOFTWARE DESIGN AHNERT GMBH
    Inventors: Stefan Feistel, Alexandru Radu Miron, Wolfgang Ahnert, Rainer Feistel
  • Patent number: 8208647
    Abstract: Embodiments of the invention can relate to methods and devices for determining a room acoustic impulse response in a time domain. In one embodiment, an acoustic input signal from an acoustic signal source is emitted into an acoustic room, an acoustic output signal is detected by an acoustic measuring device in the room and fed from the acoustic measuring device to an evaluating device and, via the evaluating device, from a reference signal corresponding to the acoustic input signal, and the acoustic output signal, if necessary after prior processing of the acoustic output signal, a room acoustic impulse response in the time domain of the acoustic room is calculated in realtime and prepared for output in that, temporally in parallel and continuously, the acoustic input signal is emitted, the acoustic output signal is detected and, via the evaluating device, the room acoustic impulse response in the time domain is determined.
    Type: Grant
    Filed: July 5, 2008
    Date of Patent: June 26, 2012
    Assignee: SDA Software Design Ahnert GmbH
    Inventors: Wolfgang Ahnert, Stefan Feistel, Alexandru Radu Miron
  • Publication number: 20120143553
    Abstract: The invention relates to a process for determining an averaged frequency-dependent transfer function for a perturbed linear time-invariant system by means of an evaluation device, wherein the process comprises providing frequency-dependent reference signals derived from excitations input in a linear time-invariant system, providing frequency-dependent measuring signals for the linear time-invariant system associated with the frequency-dependent reference signals, and determining an averaged frequency-dependent transfer function for the linear time-invariant system, in that, using signal deconvolution of mutually associated measuring and reference signals, frequency-dependent transfer functions are determined and the frequency-dependent transfer functions are averaged, and wherein during determination of the averaged frequency-dependent transfer function at least a part of the determined frequency-dependent transfer functions is included in the averaging corresponding to a respectively associated frequency-dep
    Type: Application
    Filed: May 21, 2010
    Publication date: June 7, 2012
    Applicant: SDA SOFTWARE DESIGN AHNERT GMBH
    Inventors: Stefan Feistel, Alexandru Radu Miron, Wolfgang Ahnert, Rainer Feistel
  • Publication number: 20090010443
    Abstract: Embodiments of the invention can relate to methods and devices for determining a room acoustic impulse response in a time domain. In one embodiment of a method, an acoustic input signal from an acoustic signal source is emitted into an acoustic room, an acoustic output signal is detected by an acoustic measuring device in the room and fed from the acoustic measuring device to an evaluating device and, by means of the evaluating device, from a reference signal corresponding to the acoustic input signal, and the acoustic output signal, if necessary after prior processing of the acoustic output signal, a room acoustic impulse response in the time domain of the acoustic room is calculated in real time and prepared for output in that, temporally in parallel and continuously, the acoustic input signal is emitted, the acoustic output signal is detected and, by means of the evaluating device, the room acoustic impulse response in the time domain is determined.
    Type: Application
    Filed: July 5, 2008
    Publication date: January 8, 2009
    Applicant: SDA SOFTWARE DESIGN AHNERT GMBH
    Inventors: Wolfgang Ahnert, Stefan Feistel, Alexandru Radu Miron