Speaker configuration
AssigneeMartin Auto Limited
InventorAmbrose C. T. Thompson
Life of this patent
Estimating the term…
Abstract
A method of configuring an array of speaker elements is disclosed. The method computes a sound that pressure level at various points in the venue and is evaluated by various objective functions. The configuration of a candidate array is changed, for example by the orientation or position of the speakers and the sound field is recalculated. The process is then iterated until an acceptable configuration is found. The real physical array of speakers is then configured in that manner. The method also provides a 3D plot of the sound pressure level displayed against freguency and position in the venue.
Claims29
A method of configuring an array of speaker elements for use in a venue, comprising
- (a) providing an initial candidate configuration for the array and iterating the steps of:
- (i) computing, with a computer and using a radiation model, the sound field produced by the array having the selected configuration at a plurality of points in venue, and
- (ii) evaluating, with a computer an objective function involving the calculated sound field at a plurality of audience positions in the venue,
- (iii) selecting a new candidate configuration for the array,
- and (b) configuring the array in accordance with a selected one of the configurations of the array produced by the iterations.
A method of configuring a line array of speaker elements for use in a venue, the speaker elements being linked and the angles between the speaker elements being adjustable, the method comprising
- (a) providing an initial candidate configuration for the array, wherein the configuration of the candidate array is parameterised in terms of the orientation of the elements of the array, and iterating the steps of:
- (i) computing, with a computer and using a radiation model, the sound field produced by the array having the selected configuration at a plurality of points in venue, and
- (ii) evaluating, with a computer an objective function that is, or comprises, a sum over a plurality of audience positions of a measure indicative of the difference between the magnitude of the calculated sound field and a target value for the magnitude of the sound field at those positions,
- (iii) selecting a new candidate configuration for the array by changing the parameters,
- and (b) configuring the array in accordance with a selected one of the configurations of the array produced by the iterations by adjusting the angles of the speaker elements of the line array accordingly.
A computer readable memory storing program instructions that when run by a computer causes the computer to execute a process comprising the steps of:
- receiving an initial candidate configuration for an array of speaker elements, and
- iterating the steps of:
- (i) computing, using a radiation model, the sound field produced by the array having the selected configuration at a plurality of points in venue, and
- (ii) evaluating an objective function involving the calculated sound field at a plurality of audience positions in the venue,
- (iii) selecting a new candidate configuration for the array.
A sound pressure plot device comprising:
- a sound field radiation model calculator arranged to compute using a radiation model the sound pressure at a plurality of points in a venue produced by an array of speaker elements in particular configurations,
- an optimiser arranged to choose a configuration for the speaker elements based on the outputs of the sound field radiation model calculator, and
- a plotter arranged to provide a 3D plot of the sound pressure determined by the sound field radiation model calculator, the 3D plot having two axes against which sound pressure is plotted that are frequency and position in the venue.
A sound pressure plot device comprising a plotter arranged to provide a 3D plot of the sound pressure, the 3D plot having two axes against which sound pressure is plotted that are frequency and position in the venue.
Dependencies are inferred from the claim text.