Systems and methods for suppressing sound leakage
AssigneeShenzhen Shokz Co., Ltd.
InventorsXin Qi, Fengyun Liao
Life of this patent
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Abstract
A bone conduction speaker includes a housing, a vibration board and a transducer. The transducer is located in the housing, and the vibration board is configured to contact with skin and pass vibration. At least one sound guiding hole is set on at least one portion of the housing to guide sound wave inside the housing to the outside of the housing. The guided sound wave interfaces with the leaked sound wave, and the interfacing reduces a sound pressure level of at least a portion of the leaked sound wave. A frequency of the at least a portion of the leaked sound wave is lower than 4000 Hz.
Claims20
A method, comprising:
- providing a speaker including:
- a housing;
- a transducer residing inside the housing and configured to generate vibrations, the vibrations producing a sound wave inside a cavity of the housing and causing a leaked sound wave spreading outside the housing at least from a portion of the housing;
- and
- at least two sound guiding holes located on the housing and configured to guide the sound wave inside the cavity of the housing through the at least two sound guiding holes to an outside of the housing, the guided sound wave having a phase different from a phase of the leaked sound wave, the guided sound wave interfering with the leaked sound wave in a target region, and the interference reducing a sound pressure level of the leaked sound wave in the target region, wherein a difference between distances from the at least two sound guiding holes to the portion of the housing from which the leaked sound wave is spread outside the housing is less than 5 mm.
A speaker, comprising:
- a housing;
- a transducer residing inside the housing and configured to generate vibrations, the vibrations producing a sound wave inside a cavity of the housing and causing a leaked sound wave spreading outside the housing at least from a portion of the housing;
- and
- at least two sound guiding holes located on the housing and configured to guide the sound wave inside the cavity of the housing through the at least two sound guiding holes to an outside of the housing, the guided sound wave having a phase different from a phase of the leaked sound wave, the guided sound wave interfering with the leaked sound wave in a target region, and the interference reducing a sound pressure level of the leaked sound wave in the target region, wherein a difference between distances from the at least two sound guiding holes to the portion of the housing from which the leaked sound wave is spread outside the housing is less than 5 mm.
Dependencies are inferred from the claim text.