Patent ID: 6204830
Filing Date: 2001-03-20
Classification: H04N

Abstract:
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 thatthe 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, andthe 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.