Loudspeaker and method of making same
AssigneeNew Transducers Limited
InventorsAndrew D. Bank, Ian D. MacFarlane, Keith D. Hills, Paul Burton, Neil Harris
Life of this patent
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Abstract
A loudspeaker includes an assembly of at least two bending wave panel-form acoustic members each having a set of modes which are distributed in frequency. The parameters of at least two of the acoustic members are selected so that the modal distributions of each acoustic member are substantially different. The arrangement is such that the modal distributions of the assembly of acoustic members are interleaved constructively in frequency. A transducer applies bending wave energy to the acoustic members to cause them to resonate to produce an acoustic output. A method of making such a loudspeaker is also provided.
Claims43
A loudspeaker, comprising:
- an assembly of a plurality of bending wave panel-form acoustic members each having a set of modes which are distributed in frequency, the parameters of at least two of the acoustic members being selected so that the modal distributions of each acoustic member are substantially different and the arrangement being such that the modal distributions of the assembly of acoustic members are interleaved constructively in frequency;
- and at least one transducer to apply bending wave energy to the acoustic members to cause them to resonate to produce an acoustic output.
A method of making a bending wave panel-form loudspeaker, comprising:
- selecting at least two bending wave panel-form acoustic members each having a set of modes which are distributed in frequency, such that the modal distributions of each acoustic member are substantially different:
- assembling the acoustic members such that the modal distributions of the assembly of acoustic members are interleaved constructively in frequency;
- and
- coupling at least one transducer to the assembly to apply bending wave energy to the acoustic members to cause them to resonate to produce an acoustic output.
Dependencies are inferred from the claim text.