What is Sound?
Sound is a form of energy created when air is disturbed in some
way causing changes in air pressure that radiate from the source of the sound in waves. Sound can be airborne; typically that of a human voice or impact: for instance the sound of heavy footsteps on a floor.
Sound waves vibrate at different rates or frequencies as they move through the air and are measured in cycles per second or Hertz; the faster a sound wave passes a given point, the shorter the wavelength and in turn the higher the frequency. Vibrations in the air caused by the sound determine how loud it is; the stronger the vibrations the greater the ’amplitude’. The length or duration of a sound i.e. it’s reverberation time or echo, is determined by the extent to which the energy is expended on contact with surfaces within a room.
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【introduce】 |
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【Product specifications】 |
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【Product Configuration】 |
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【Technical Parameters】 |
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【Color Appearance】 |
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【Features】 |
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Our production time is approximately 3 to 4 weeks. This allows for sufficient time to manufacture the products with quality and attention.
Regarding the transportation terms, we offer a variety of options. EXW (Ex Works) means the buyer takes responsibility for transportation from the seller's premises. FOB (Free on Board) transfers responsibility to the buyer once the goods are on board the ship at the port of departure. CIF (Cost, Insurance and Freight) includes the cost of the goods, insurance, and freight to the destination port. DDU (Delivered Duty Unpaid) delivers the goods to the buyer's specified location without the payment of customs duties. DDP (Delivered Duty Paid) includes the delivery of the goods with all duties paid to the buyer's location. This diverse range of transportation terms gives our customers flexibility and choice to meet their specific needs and preferences.