Poster une réponse  Créer un sujet 
FDA Morphosis
Auteur Message
Audio Pavillon
Pavillonneur
****


Messages : 320
Groupe : Enregistré
Inscription : 13/10/2017
Statut : Hors ligne
Message : #1
RE: FDA Morphosis

xn a écrit :
@Audio Pavillon, le filtre passe bas de sortie d'un ampli class-D n'a pour seul but que de supprimer toute information hors bande audio. Hors ton oreille n'entend rien de ce qui se passe au dessus de 20 kHz (au mieux), c'est elle qui sert de filtre passe bas, et les HP sont eux aussi de formidables filtres passe-bas.

Si tu me trouves un class-D sans filtre passe-bas ...

Citation :
Le passage de PCM à PWM est bien tout ce qu'il y a de plus simple à réaliser. On transforme une valeur numériques en une durée temporelle numérique. C'est ultra simple à faire et sans aucune perte tant que les horloges sont synchrones.

Je crois que tu te leurres.
Il y'a un paquet d'articles qui expliquent par le menu le pourquoi du pas si simple et les causes de distorsions de cette conversion.

Si c'était aussi simple les Hypex guys auraient implémenté ce procédé depuis longtemps, mais ils n'ont à l'heure actuelle aucun projet en ce sens.
La comparaison des courbes de disto est assez symptomatique.

27/12/2017 20:01:26
Trouver tous les messages de cet utilisateur Citer ce message dans une réponse
Poster une réponse  Créer un sujet 

Messages dans ce sujet
FDA Morphosis - jeans - 23/12/2017, 18:12:21
RE: FDA Morphosis - Ragnarsson - 23/12/2017, 18:15:07
RE: FDA Morphosis - Dominique - 23/12/2017, 19:03:11
RE: FDA Morphosis - Ragnarsson - 24/12/2017, 00:34:37
RE: FDA Morphosis - escartefigue33 - 26/12/2017, 17:26:25
RE: FDA Morphosis - xn - 26/12/2017, 18:34:51
RE: FDA Morphosis - rliyung - 26/12/2017, 20:48:09
RE: FDA Morphosis - rliyung - 27/12/2017, 12:00:10
RE: FDA Morphosis - escartefigue33 - 27/12/2017, 09:56:18
RE: FDA Morphosis - xn - 27/12/2017, 12:11:53
RE: FDA Morphosis - rliyung - 27/12/2017, 16:40:32
RE: FDA Morphosis - escartefigue33 - 27/12/2017, 12:51:01
RE: FDA Morphosis - Le Relais Sonore - 27/12/2017, 13:24:25
RE: FDA Morphosis - forr - 27/12/2017, 13:33:46
RE: FDA Morphosis - Audio Pavillon - 27/12/2017, 14:05:12
RE: FDA Morphosis - xn - 27/12/2017, 14:42:23
RE: FDA Morphosis - Audio Pavillon - 27/12/2017, 17:35:55
RE: FDA Morphosis - brunop - 27/12/2017, 16:00:14
RE: FDA Morphosis - Le Relais Sonore - 27/12/2017, 16:29:30
RE: FDA Morphosis - escartefigue33 - 27/12/2017, 17:14:40
RE: FDA Morphosis - forr - 27/12/2017, 19:46:41
RE: FDA Morphosis - escartefigue33 - 27/12/2017, 19:56:47
RE: FDA Morphosis - forr - 27/12/2017, 20:33:17
RE: FDA Morphosis - xn - 27/12/2017, 19:33:59
RE: FDA Morphosis - Audio Pavillon - 27/12/2017 20:01:26
RE: FDA Morphosis - rliyung - 27/12/2017, 21:53:25
RE: FDA Morphosis - xn - 28/12/2017, 11:31:01
RE: FDA Morphosis - rliyung - 28/12/2017, 22:14:24
RE: FDA Morphosis - revilo - 29/12/2017, 12:34:58
RE: FDA Morphosis - xn - 27/12/2017, 20:14:45
RE: FDA Morphosis - escartefigue33 - 28/12/2017, 13:10:46
RE: FDA Morphosis - xn - 28/12/2017, 15:30:57
RE: FDA Morphosis - Le Relais Sonore - 28/12/2017, 15:57:51
RE: FDA Morphosis - escartefigue33 - 28/12/2017, 16:51:53
RE: FDA Morphosis - xn - 28/12/2017, 17:08:19
RE: FDA Morphosis - escartefigue33 - 28/12/2017, 18:07:28
RE: FDA Morphosis - Le Relais Sonore - 28/12/2017, 19:40:46
RE: FDA Morphosis - xn - 28/12/2017, 18:34:13
RE: FDA Morphosis - JM Plantefeve - 29/12/2017, 13:49:52
RE: FDA Morphosis - xn - 29/12/2017, 15:33:22
RE: FDA Morphosis - jsilvestre - 29/12/2017, 18:39:43
RE: FDA Morphosis - thierry38 - 29/12/2017, 15:36:53
RE: FDA Morphosis - xn - 29/12/2017, 15:49:36
RE: FDA Morphosis - thierry38 - 29/12/2017, 17:05:49
RE: FDA Morphosis - JM Plantefeve - 29/12/2017, 17:48:01
RE: FDA Morphosis - xn - 29/12/2017, 17:59:39
RE: FDA Morphosis - xn - 29/12/2017, 19:10:38
RE: FDA Morphosis - jsilvestre - 29/12/2017, 23:10:07
RE: FDA Morphosis - JM Plantefeve - 29/12/2017, 19:32:23
RE: FDA Morphosis - xn - 29/12/2017, 19:48:57
RE: FDA Morphosis - JM Plantefeve - 29/12/2017, 20:53:56
RE: FDA Morphosis - xn - 29/12/2017, 21:34:33
RE: FDA Morphosis - jys - 29/12/2017, 22:12:37
RE: FDA Morphosis - xn - 30/12/2017, 12:26:09
RE: FDA Morphosis - jsilvestre - 30/12/2017, 17:57:05
RE: FDA Morphosis - xn - 30/12/2017, 18:50:13
RE: FDA Morphosis - Jean-ClaudeRL - 30/12/2017, 20:18:31
RE: FDA Morphosis - escartefigue33 - 31/12/2017, 09:54:25
RE: FDA Morphosis - Audio Pavillon - 31/12/2017, 16:36:49
RE: FDA Morphosis - narshorn - 31/12/2017, 17:10:48
RE: FDA Morphosis - JM Plantefeve - 31/12/2017, 16:03:58
RE: FDA Morphosis - xn - 02/01/2018, 03:21:55
RE: FDA Morphosis - xn - 31/12/2017, 20:12:24
RE: FDA Morphosis - Audio Pavillon - 31/12/2017, 20:35:58
RE: FDA Morphosis - narshorn - 31/12/2017, 20:46:21
RE: FDA Morphosis - Dominique-Tanguy - 01/01/2018, 09:39:08
RE: FDA Morphosis - Jean-ClaudeRL - 01/01/2018, 10:20:20
RE: FDA Morphosis - narshorn - 01/01/2018, 11:48:11
RE: FDA Morphosis - jeans - 01/01/2018, 11:49:57
RE: FDA Morphosis - Jean-ClaudeRL - 01/01/2018, 11:57:58
RE: FDA Morphosis - escartefigue33 - 01/01/2018, 12:06:50
RE: FDA Morphosis - rliyung - 01/01/2018, 13:15:18
RE: FDA Morphosis - narshorn - 01/01/2018, 19:51:16
RE: FDA Morphosis - narshorn - 01/01/2018, 14:33:45
RE: FDA Morphosis - jys - 01/01/2018, 15:23:11
RE: FDA Morphosis - Grand_Floyd - 01/01/2018, 15:26:52
RE: FDA Morphosis - JM Plantefeve - 01/01/2018, 20:28:24
RE: FDA Morphosis - escartefigue33 - 01/01/2018, 20:36:12
RE: FDA Morphosis - jys - 02/01/2018, 00:33:19
RE: FDA Morphosis - Dominique-Tanguy - 01/01/2018, 20:37:56
RE: FDA Morphosis - JM Plantefeve - 01/01/2018, 20:47:33
RE: FDA Morphosis - Dominique-Tanguy - 02/01/2018, 10:40:35
RE: FDA Morphosis - rliyung - 02/01/2018, 00:56:19
RE: FDA Morphosis - JM Plantefeve - 02/01/2018, 10:10:50
RE: FDA Morphosis - xn - 02/01/2018, 10:41:47
RE: FDA Morphosis - jeans - 02/01/2018, 12:17:38
RE: FDA Morphosis - jys - 03/01/2018, 01:01:15
RE: FDA Morphosis - jeans - 04/01/2018, 12:56:59
RE: FDA Morphosis - jimbee - 05/01/2018, 17:29:26
RE: FDA Morphosis - jeans - 05/01/2018, 17:52:54
RE: FDA Morphosis - xn - 05/01/2018, 20:19:47
RE: FDA Morphosis - jys - 06/01/2018, 02:17:21
RE: FDA Morphosis - narshorn - 06/01/2018, 09:25:20
RE: FDA Morphosis - jeans - 06/01/2018, 12:18:23
RE: FDA Morphosis - narshorn - 07/01/2018, 15:23:06
RE: FDA Morphosis - jimbee - 06/01/2018, 10:09:29
RE: FDA Morphosis - jeans - 07/01/2018, 17:15:53
RE: FDA Morphosis - jeans - 10/01/2018, 18:50:57
RE: FDA Morphosis - JM Plantefeve - 10/01/2018, 21:04:10
RE: FDA Morphosis - jeans - 10/01/2018, 21:57:44
RE: FDA Morphosis - jeans - 10/01/2018, 23:29:47
RE: FDA Morphosis - rliyung - 11/01/2018, 11:53:23
RE: FDA Morphosis - jimbee - 11/01/2018, 14:02:30
RE: FDA Morphosis - jeans - 11/01/2018, 15:50:02
RE: FDA Morphosis - jimbee - 11/01/2018, 19:33:34
RE: FDA Morphosis - xn - 11/01/2018, 08:07:21
RE: FDA Morphosis - escartefigue33 - 11/01/2018, 09:15:31
RE: FDA Morphosis - jeans - 11/01/2018, 12:59:23
RE: FDA Morphosis - xn - 11/01/2018, 21:46:11
RE: FDA Morphosis - jimbee - 12/01/2018, 17:48:09
RE: FDA Morphosis - thierry38 - 13/01/2018, 16:57:59
RE: FDA Morphosis - jeans - 13/02/2018, 15:28:50
RE: FDA Morphosis - jm88 - 14/02/2018, 13:36:39
RE: FDA Morphosis - jeans - 14/02/2018, 16:14:36
RE: FDA Morphosis - jm88 - 15/02/2018, 13:27:25
RE: FDA Morphosis - jeans - 16/02/2018, 19:01:25
RE: FDA Morphosis - narshorn - 16/02/2018, 19:16:39
RE: FDA Morphosis - calivin - 16/02/2018, 19:40:10
RE: FDA Morphosis - jm88 - 16/02/2018, 20:24:09
RE: FDA Morphosis - folkdeath95 - 17/02/2018, 13:12:37
RE: FDA Morphosis - narshorn - 17/02/2018, 11:52:25
RE: FDA Morphosis - thierry38 - 17/02/2018, 13:06:31
RE: FDA Morphosis - jm88 - 17/02/2018, 13:48:36
RE: FDA Morphosis - thierry38 - 17/02/2018, 15:24:57
RE: FDA Morphosis - jm88 - 18/02/2018, 09:43:48
RE: FDA Morphosis - forr - 18/02/2018, 13:35:26
RE: FDA Morphosis - jm88 - 18/02/2018, 17:43:59
RE: FDA Morphosis - forr - 18/02/2018, 18:39:32
RE: FDA Morphosis - jm88 - 18/02/2018, 22:13:59
RE: FDA Morphosis - forr - 19/02/2018, 01:48:05
RE: FDA Morphosis - jm88 - 19/02/2018, 09:53:24
RE: FDA Morphosis - rliyung - 18/02/2018, 09:55:14
RE: FDA Morphosis - Dominique-Tanguy - 18/02/2018, 10:10:26
RE: FDA Morphosis - jm88 - 18/02/2018, 13:28:06
RE: FDA Morphosis - Dominique-Tanguy - 18/02/2018, 14:20:27
RE: FDA Morphosis - folkdeath95 - 18/02/2018, 15:46:59
RE: FDA Morphosis - forr - 18/02/2018, 17:32:01
RE: FDA Morphosis - jm88 - 18/02/2018, 17:40:31
RE: FDA Morphosis - forr - 18/02/2018, 18:52:02
RE: FDA Morphosis - jm88 - 18/02/2018, 22:16:59
RE: FDA Morphosis - Grand_Floyd - 19/02/2018, 09:44:10
RE: FDA Morphosis - jm88 - 19/02/2018, 09:55:55
RE: FDA Morphosis - forr - 19/02/2018, 12:54:34
RE: FDA Morphosis - jm88 - 19/02/2018, 10:07:52
RE: FDA Morphosis - escartefigue33 - 18/02/2018, 17:50:39
RE: FDA Morphosis - narshorn - 18/02/2018, 18:03:41
RE: FDA Morphosis - escartefigue33 - 18/02/2018, 18:54:30
RE: FDA Morphosis - jys - 18/02/2018, 18:17:32
RE: FDA Morphosis - JM Plantefeve - 18/02/2018, 20:53:59
RE: FDA Morphosis - escartefigue33 - 18/02/2018, 21:58:21
RE: FDA Morphosis - xn - 18/02/2018, 22:34:45
RE: FDA Morphosis - jm88 - 19/02/2018, 09:33:01
RE: FDA Morphosis - jys - 19/02/2018, 01:02:37
RE: FDA Morphosis - Audio Pavillon - 19/02/2018, 11:20:18
RE: FDA Morphosis - jm88 - 19/02/2018, 20:55:28
RE: FDA Morphosis - Grand_Floyd - 19/02/2018, 12:55:34
RE: FDA Morphosis - Audio Pavillon - 19/02/2018, 15:04:54
RE: FDA Morphosis - escartefigue33 - 19/02/2018, 16:04:23
RE: FDA Morphosis - Grand_Floyd - 19/02/2018, 17:08:42
RE: FDA Morphosis - JM Plantefeve - 19/02/2018, 21:08:30
RE: FDA Morphosis - escartefigue33 - 19/02/2018, 21:27:41
RE: FDA Morphosis - narshorn - 19/02/2018, 23:01:48
RE: FDA Morphosis - jeans - 24/02/2018, 22:19:35
RE: FDA Morphosis - jimbee - 09/04/2018, 17:30:14
RE: FDA Morphosis - narshorn - 09/04/2018, 18:49:20
RE: FDA Morphosis - Jerome775 - 28/09/2018, 17:26:46
RE: FDA Morphosis - jmg - 28/09/2018, 20:11:46
RE: FDA Morphosis - Jerome775 - 29/09/2018, 17:49:42
RE: FDA Morphosis - JM Plantefeve - 10/12/2018, 20:48:29
RE: FDA Morphosis - jeans - 11/12/2018, 13:07:48
RE: FDA Morphosis - calivin - 11/12/2018, 13:44:36

Voir une version imprimable
Envoyer ce sujet à un ami
S'abonner au sujet | Ajouter le sujet aux favoris

Aller à :