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curiosoperoinutil.com :: Ver Tema - separar sonido
curiosoperoinutil.com
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separar sonido
https://curiosoperoinutil.com/forum/viewtopic.php?f=2&t=644
Página 1 de 1

Autor:  Pipistrellum [ Sab 15 Jul 2006, 16:08 ]
Asunto:  separar sonido

En capitulo de Fauna callejera, el presentador iba narrando por la calle e iban quitando el sonido de la gente, luego el del trafico, el de los locales hasta que solo dejaban el sonido de los grillos de las macetas.

Como se hicieron para eliminar los demas sonidos? Supongo que utilizaran un microfono cercano, pero quedarian parte del sonido ambiente.


Una tecnica para quitar el ruido, es captar el ruido y luego invertirlo ( la presiones negativas son positivas y viceversa). Al mezclarlo con el ruido original se anulan las dos ondas.
Pero debe ser exacto.

Las tecnicas que he comentado son eficaces? hay alguna otra?

GATO edita: pip, por mucho que te repitas, no llegarás antes a la medalla de neutrinos

Autor:  chemist [ Sab 15 Jul 2006, 16:11 ]
Asunto: 

Quizá simlpemente se haga con el software adecuado que permita separar los diferentes sonidos y borrar el deseado

Como en la típica película que llama el secuestrador para pedir el rescate y el chicho listo del FBI se coge el ordenador, quita la voz y demás y se puede escuchar de fondo la fuente de tal plaza o el reloj de tal sitio

Edit: dicho sea desde el nivel usuario

Autor:  Adama [ Sab 15 Jul 2006, 18:07 ]
Asunto: 


Autor:  Ganon [ Sab 15 Jul 2006, 21:04 ]
Asunto: 


Autor:  eljose [ Dom 16 Jul 2006, 23:50 ]
Asunto: 

Un sonido, aparte de la intensidad y del tono tiene un determinado timbre. El timbre es lo que hace que distingamos los diferentes instrumentos de una orquesta aunque toquen la misma nota. El timbre depende de la combinación de armónicos sobre la fundamental. Así que supongo que será matemáticamente posible obtener los armónicos y separarlos.

Autor:  rmcantin [ Lun 17 Jul 2006, 01:28 ]
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Autor:  Remo [ Lun 17 Jul 2006, 07:17 ]
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Autor:  Pipistrellum [ Lun 17 Jul 2006, 08:06 ]
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Autor:  ReiVaX18 [ Lun 17 Jul 2006, 13:46 ]
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Autor:  KillerRex [ Lun 17 Jul 2006, 15:15 ]
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Autor:  andreito [ Lun 17 Jul 2006, 16:27 ]
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Autor:  Case [ Lun 17 Jul 2006, 23:54 ]
Asunto: 


Autor:  deffan [ Mié 19 Jul 2006, 09:17 ]
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Autor:  Pipistrellum [ Jue 27 Jul 2006, 08:03 ]
Asunto: 


Autor:  Pipistrellum [ Jue 24 Ago 2006, 17:10 ]
Asunto: 


Autor:  rmcantin [ Vie 25 Ago 2006, 02:42 ]
Asunto: 


Autor:  Titto_ [ Vie 25 Ago 2006, 03:07 ]
Asunto: 


Autor:  Garvm [ Vie 25 Ago 2006, 08:37 ]
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Autor:  Pipistrellum [ Vie 25 Ago 2006, 12:34 ]
Asunto: 


Autor:  Ender [ Vie 25 Ago 2006, 13:32 ]
Asunto: 


Autor:  rmcantin [ Vie 25 Ago 2006, 17:01 ]
Asunto: 

Matematicamente si, salvo que las antenas fueran totalmente independientes.

Es decir, el modelo de un MIMO (y no me refiero a un tio con la cara pintada de blanco) es:

$m[1]

Por lo tanto, para una matriz H y W generales, cada salida "y" contienen informacion de varias fuentes "x" (como las grabaciones de una fiesta).

La unica forma de resolverlo a lo bruto es si la matriz H*W es diagonal, es decir, las antenas son independientes, o, referido al Cocktail Party problem, grabaras a cada persona por separado.

Y aun asi, seguiriamos teniendo el problema del ruido "n".

(Vaya post que me ha quedado, no apto para cardiacos)

Autor:  Ender [ Vie 25 Ago 2006, 19:04 ]
Asunto: 


Autor:  chemist [ Vie 25 Ago 2006, 19:07 ]
Asunto: 


Autor:  Kramer [ Vie 25 Ago 2006, 19:45 ]
Asunto: 


Autor:  chemist [ Vie 25 Ago 2006, 19:48 ]
Asunto: 


Autor:  Ender [ Vie 25 Ago 2006, 20:38 ]
Asunto: 


Autor:  ocularis [ Vie 25 Ago 2006, 23:23 ]
Asunto: 


Autor:  EvilWolf [ Sab 26 Ago 2006, 03:52 ]
Asunto: 

Es un problema bastante común en las expresiones de este tipo. Se oyen una vez y como quedan más cultas que la leche, se usan a mansalva sin tener ni idea de que quieren decir en realidad o como se pueden escribir.

Apostaría que en ésto los españolitos somos pioneros, en hacer o destrozar nuestra propia visión de las expresiones.

Autor:  Ender [ Sab 26 Ago 2006, 05:06 ]
Asunto: 


Autor:  ocularis [ Sab 26 Ago 2006, 12:55 ]
Asunto: 


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