D e f inición Es la percepción de nuest ro cerebro de las vibraciones m ecánicas que producen algunos cuerpos y que llega a nuest ro oído a t ravés de un m edio Am plit ud Ca r a ct e r íst ica s
Longit ud de onda Frecuencia Espect ro
Esp e ct r o sonor o hum a no (20 hz a 20000 hz) Rango de frecuencias que los hum anos som os capaces de percibir
Inf r a sonid os Por debajo de los 20 hz, lo perciben los cet áceos Ult r a sonid os Por encim a de los 20000 hz, lo perciben los cánidos y los m urciélagos
Sonid o conf or t a b le Hast a 80 Db
Audio digit al
Am p lit ud d e l sonid o Hace referencia al volum en y se m ide en Decibelios (Db)
Ruid o De 80 a 120 Db Um b r a l d e l d olor De 120 a 180 Db D a ño f ísico A part ir de 180 Db
D ig it a liza ción d e l sonid o
Conve r t ir la ond a a na lóg ica a va lor e s d ig it a le s El est ándar de m uest reo es de 44,1 Khz a 16 bit s est éreo COD EC ( COD if ica d or D ECod if ica d or ) Soft ware que perm it e reproducir un form at o de audio digit al Sin com p r e sión Guardan t oda la inform ación a m áxim a calidad (10 Mb/m in aprox.) CDA, WAV ...)
For m a t os d e sonid o d ig it a l
Com p r e sión sin p é r d id a Ut ilizan algorit m os para reducir el t am año (5 Mb/m in aprox.) (FLAC, AIFF...) Com p r e sión con p é r d id a Elim inan las part es de la onda que no est án dent ro del espect ro hum ano (1 Mb/m in aprox.) (MP3, OGG, WMA...)
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