The range of the human ear is 20-20K Hz, 120-130dB is the limit of humans, and hearing will be damaged if it exceeds 130dB<\/p>\n\n\n\n
Unit of frequency: Hz (Hertz)<\/p>\n\n\n\n
Amplitude range: dB (decibels)<\/p>\n\n\n\n
Sample rate: How many snapshots of sound waves are captured per second. 48kHz = 48k samples per second<\/p>\n\n\n\n
Nyquist theorem: To perfectly record a sound wave with a maximum frequency of f, you need to have a sample rate of at least 2f<\/p>\n\n\n\n
For example, the human ear must have a maximum sampling rate of 20kHz \u2192 at least 40kHz\u2192 so the audio standard is 44.1\/48kHz<\/p>\n\n\n\n
Bit depth: The higher the selection, the higher the sound amplitude controllable range. 24bit can achieve a maximum range of 144dB<\/p>\n\n\n\n
Bit depth affects dynamic range and noise floor<\/p>\n\n\n\n
The higher the number \u2192 the small signal is not lost \u2192 cleaner and more detailed<\/p>\n\n\n\n
The greater the dynamic range\u2192 the difference between loud and quiet can be recorded more cleanly<\/p>\n\n\n\n
Each additional 1 bit increases the dynamic range by approximately 6dB<\/p>\n\n\n\n
24bit \u2248 144 dB<\/p>\n\n\n\n
Quantization Noise: When a sound is digitized, it is forced to round up the error because it “cannot accurately represent the original volume”.<\/p>\n\n\n\n
The higher the bit depth, the smaller the error and the cleaner the sound<\/p>\n\n\n\n
The lower the bit depth, the greater the error and the more obvious the noise<\/p>\n\n\n\n
Noise Floor: The noise floor is “the noise of the device itself”.<\/p>\n\n\n\n
The self-noise of the microphone, the noise of the preamp, the noise of the sound card electronic circuit, and the faint electronic noise of the analog device itself are all noise bottoms. The noise floor itself is determined by the device, not the bit depth.<\/p>\n\n\n\n
The bit depth does not change the “size of the noise floor”, but it can determine whether the sound below the noise floor can be recorded.<\/em><\/p>\n\n\n\n Higher bit depth \u2192 finer volume resolution \u2192 better distinguishing small sounds close to the bottom of the noise<\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" The range of the human ear is 20-20K Hz, 120-130dB is the limit of humans, and hearing will be damaged if it exceeds 130dB Unit of frequency: Hz (Hertz) Amplitude range: dB (decibels) Sample rate: How many snapshots of sound waves are captured per second. 48kHz = 48k samples per second Nyquist theorem: To perfectly […]<\/p>\n","protected":false},"author":61,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-243","post","type-post","status-publish","format-standard","hentry","category-sound-design"],"_links":{"self":[{"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/posts\/243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/users\/61"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/comments?post=243"}],"version-history":[{"count":3,"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/posts\/243\/revisions"}],"predecessor-version":[{"id":246,"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/posts\/243\/revisions\/246"}],"wp:attachment":[{"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/media?parent=243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/categories?post=243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.wsagames.com\/jz15n24\/wp-json\/wp\/v2\/tags?post=243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}