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5 knocks on the glass door.
UCS Category: DOORKnck ⊕The UCS, for "Universal Category System", is a public domain initiative by Tim Nielsen, Justin Drury and Kai Paquin, among others. This is a list of fixed and consistent categories for classifying sound effects. It provides consistency in a filename structure to make naming and categorizing easier for anyone who maintains their own personal or professional library. This sound library meets the UCS 8.1 categorization. Click to display the full UCS list.
Type: Alone sound
Channels: Stereophonic ⊕- Monophonic : Is single-channel. Typically there is only one microphone, one loudspeaker.
- Stereophonic : Is a method of sound reproduction that creates an illusion of directionality and audible perspective.
- Ambisonic : aims to create a multi-channel sound space. Used, for example, in virtual reality.
Conditions: ⊕A "studio" sound has been recorded in a reverb-free place.
An "outdoor" sound contains disruptive elements. The sound is not totally pure. There is sometimes a little wind, some rumors, etc.
A "indoor" sound usually contains a strong reverb. It can not, for example, be used to sound an image taken outdoors.
Sampling Rate: 44,100 Hz ⊕Search : Defines the number of samples per seconds taken from a continuous signal to make a discrete signal. The unit for sampling rate is hertz.
- 44,100 Hz : CD Audio quality.
- 48,000 Hz : The standard used by professional digital video equipment such as tape recorders, video servers, vision mixers and so on.
- 96,000 Hz : DVD-Audio, some LPCM DVD tracks, BD-ROM (Blu-ray Disc) audio tracks, HD DVD (High-Definition DVD) audio tracks.
Bit depth: 16 Bits ⊕More : In digital audio, bit depth describes the number of bits of information recorded for each sample.
- 16 bits : CD quality audio. A standard used by media professionals.
- 24 bits : DVD-Audio, which can support up to 24-bit audio.
Sound n°: 320
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BigSoundBank.com is a library of royalty free sounds, free of charge and public domain sounds. The best quality soundbank for commercial and personal projects. Sounds effects, ambiences, soundscapes and atmospheres in MP3, WAV, BWF, AIFF, OGG, FLAC, AAC and M4A formats. Listen and download ! For audiovisual, cinema, theater, video games, radio, development, powerpoint, virtual reality, 3D, metaverse, and more media productions.