Frequency: The number of times a specified periodic phenomenon occurs within a specified interval.
Wavelength: The distance between one peak or crest of a wave of light, heat, or other energy and the next corresponding peak or crest.
Longitudinal: Vibration parallel to direction of travel.
Transverse: Vibration at right angle to direction of travel.
Videos
Sound waves and their sources
Three different sources of sound give voice to musical instruments: vibrating columns of air, vibrating surfaces and vibrating strings. Musical or not, every sound originates in a vibrating object.
Three auditory afects of musical sounds: loudness pitch and quality.
Notes
Reverberance: is linked to the speed at which sound energy disappears in a room. An unfurnished room with hard surfaces, such as a church, is perceived as being more reverberant than a well-furnished living room.
Soundproofing (sound blocking): If the objective is to stop sound from entering or leaving a space, then you will most likely need sound blocking or soundproofing.
Sound absorption (acoustic enhancement): If the objective is to enhance the properties of sound by improving speech clarity and sound quality, then the answer is sound absorption or acoustic enhancement.
Videos
Sound waves and their sources
Three different sources of sound give voice to musical instruments: vibrating columns of air, vibrating surfaces and vibrating strings. Musical or not, every sound originates in a vibrating object.
Three auditory afects of musical sounds: loudness pitch and quality.
Notes
Reverberance: is linked to the speed at which sound energy disappears in a room. An unfurnished room with hard surfaces, such as a church, is perceived as being more reverberant than a well-furnished living room.
Soundproofing (sound blocking): If the objective is to stop sound from entering or leaving a space, then you will most likely need sound blocking or soundproofing.
Sound absorption (acoustic enhancement): If the objective is to enhance the properties of sound by improving speech clarity and sound quality, then the answer is sound absorption or acoustic enhancement.