rumble filter造句

• The rumble filter prevents this noise from being amplified and sent to the loudspeakers.
• Rumble filters are high-pass filters applied to the removal of unwanted sounds near to the lower end of the audible range or below.
• Underneath these controls were a series of black push buttons which allowed control of the input sources as well as loudness, high pass filters, rumble filters and tape bypass.
• The switches for some settings, such as the on-off switch for the speaker-protection limiter or a low-pitch " rumble filter " ( designed to protect speakers from very low sounds ), may be hidden behind a screwed-on door or metal plate.
• A " rumble filter " is a high pass ( low cut ) filter with a cutoff typically in the 20 to 40 Hz range; this is the low frequency end of human hearing . " Rumble " is a type of low frequency noise produced in record players and turntables, particularly older or low quality models.