Monitor having base with sound reproducing element for providing sound frequencies at self-resonant frequency
AssigneeNokia Technology GmbH
InventorTommi Raussi
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Abstract
The invention relates to a monitor comprising a picture tube and an audio part mounted on a base. The picture tube unit (1) of the monitor includes main sound reproduction elements (6, 7) for the production of sound frequencies deviating from the self-resonant frequency. The base (2) comprises a bass unit which is used to reproduce sound frequencies at the self-resonant frequency. Thus, it is possible to dampen the vibration caused by the self resonant frequencies so that these frequencies do not harmfully interfere with the picture display. The invention is applicable especially in connection with a picture tube operating have a fine pitch shadow mask.
Claims8
A monitor comprising a picture tube unit (1) with a self-resonant frequency, a base (2) and sound reproduction elements that provide audio output signals with an audio frequency causing undesirable vibration of the picture tube unit (1) when the audio frequency is at or substantially around the self-resonant frequency, characterized in that
- the sound reproduction elements include a main sound reproduction element (6, 7) and an additional sound reproduction element (16);
- the picture tube unit (1) is mounted on the base (2) and includes the main sound reproduction element (6, 7) to reproduce substantially audio frequencies other than the self-resonant frequency, and
- the base (2) has the additional sound reproduction element (16) arranged therein to reproduce separately sound frequencies at or substantially around the self-resonant frequency to minimize the undesirable vibration of the picture tube unit (1) at the self-resonant frequency.
Dependencies are inferred from the claim text.