Alesis 3630 manuel d'utilisation
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Un bon manuel d’utilisation
Les règles imposent au revendeur l'obligation de fournir à l'acheteur, avec des marchandises, le manuel d’utilisation Alesis 3630. Le manque du manuel d’utilisation ou les informations incorrectes fournies au consommateur sont à la base d'une plainte pour non-conformité du dispositif avec le contrat. Conformément à la loi, l’inclusion du manuel d’utilisation sous une forme autre que le papier est autorisée, ce qui est souvent utilisé récemment, en incluant la forme graphique ou électronique du manuel Alesis 3630 ou les vidéos d'instruction pour les utilisateurs. La condition est son caractère lisible et compréhensible.
Qu'est ce que le manuel d’utilisation?
Le mot vient du latin "Instructio", à savoir organiser. Ainsi, le manuel d’utilisation Alesis 3630 décrit les étapes de la procédure. Le but du manuel d’utilisation est d’instruire, de faciliter le démarrage, l'utilisation de l'équipement ou l'exécution des actions spécifiques. Le manuel d’utilisation est une collection d'informations sur l'objet/service, une indice.
Malheureusement, peu d'utilisateurs prennent le temps de lire le manuel d’utilisation, et un bon manuel permet non seulement d’apprendre à connaître un certain nombre de fonctionnalités supplémentaires du dispositif acheté, mais aussi éviter la majorité des défaillances.
Donc, ce qui devrait contenir le manuel parfait?
Tout d'abord, le manuel d’utilisation Alesis 3630 devrait contenir:
- informations sur les caractéristiques techniques du dispositif Alesis 3630
- nom du fabricant et année de fabrication Alesis 3630
- instructions d'utilisation, de réglage et d’entretien de l'équipement Alesis 3630
- signes de sécurité et attestations confirmant la conformité avec les normes pertinentes
Pourquoi nous ne lisons pas les manuels d’utilisation?
Habituellement, cela est dû au manque de temps et de certitude quant à la fonctionnalité spécifique de l'équipement acheté. Malheureusement, la connexion et le démarrage Alesis 3630 ne suffisent pas. Le manuel d’utilisation contient un certain nombre de lignes directrices concernant les fonctionnalités spécifiques, la sécurité, les méthodes d'entretien (même les moyens qui doivent être utilisés), les défauts possibles Alesis 3630 et les moyens de résoudre des problèmes communs lors de l'utilisation. Enfin, le manuel contient les coordonnées du service Alesis en l'absence de l'efficacité des solutions proposées. Actuellement, les manuels d’utilisation sous la forme d'animations intéressantes et de vidéos pédagogiques qui sont meilleurs que la brochure, sont très populaires. Ce type de manuel permet à l'utilisateur de voir toute la vidéo d'instruction sans sauter les spécifications et les descriptions techniques compliquées Alesis 3630, comme c’est le cas pour la version papier.
Pourquoi lire le manuel d’utilisation?
Tout d'abord, il contient la réponse sur la structure, les possibilités du dispositif Alesis 3630, l'utilisation de divers accessoires et une gamme d'informations pour profiter pleinement de toutes les fonctionnalités et commodités.
Après un achat réussi de l’équipement/dispositif, prenez un moment pour vous familiariser avec toutes les parties du manuel d'utilisation Alesis 3630. À l'heure actuelle, ils sont soigneusement préparés et traduits pour qu'ils soient non seulement compréhensibles pour les utilisateurs, mais pour qu’ils remplissent leur fonction de base de l'information et d’aide.
Table des matières du manuel d’utilisation
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Page 1
A L ES I S 3630 Reference M a nu a l[...]
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Page 2
1.1 INTRODUCTION Thank you for purchasing the Alesis 3630 Dual Channel Compressor/ Limiter with Gate. This cost-effective gain control device complements any studio with several important features. For more information on the significance of these features, refer to the Appendix "About Compression and Limiting." • Stereo or dual mono op[...]
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Page 3
Here are some typical applications for the 3630: • Even out a vocalist's dynamics to compensate for poor mic or vocal technique. • Increase a guitar's (or other stringed instrument's) sustain. • Smooth out bass sounds for a more consistent level. • Prevent peaks common in many source signals, such as drums, from overloading t[...]
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Page 4
nels, synthesizers, and other unbalanced signal sources. Microphones and guitars can be used with the level switch set to -10dBV (see below). Guitars with exceptionally low output pickups may require a preamp for best results. The input impedance is greater than 100k Ω . Side chain This stereo jack allows for insertion of other signal proces- sor[...]
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Page 5
1.3 HOOKING UP POWER Hooking up power involves the rear panel power jack and front panel on-off switch. Power jack Plug the AC adapter output in here. Use only the AC adapter supplied with the 3630; use of any other AC adapter will void your warranty. To prolong the AC adapter's life, unplug it when not in use (turning the 3630's power sw[...]
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Page 6
Threshold (-40 to +20 dBu) Sets the level above which signals will be compressed or limited. Rotating the control clockwise raises the threshold, thus clamping sig- nals at a higher level and reducing the amount of compression or lim- iting. Ratio (1:1 to ∞ :1) Sets the compression slope, which determines how the output signal will change in rela[...]
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Page 7
Peak mode. RMS mode automatically adjusts the attack time, depend- ing on the characteristics of the signals being processed. In peak mode , this control sets how fast the limiter's internal circuitry reacts to changes in input level. The longer the attack time, the more of a signal's dynamics are "let through" before the limiti[...]
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Page 8
1.5 FRONT PANEL COMPRESSOR/LIMITER SWITCHES Each switch has an in and out position. The legend above each switch shows which status is associated with which switch position. Peak - RMS With peak response, the 3630 responds to signal peaks to insure that these peaks do not exceed a particular threshold. This mode is ideal when using the 3630 to avoi[...]
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Page 9
goes into limiting. With the Link switch out, Channels A and B oper- ate independently as two monophonic compressor/limiters. With the Link switch in, Channel A's controls become master controls for Channels A and B, with the exception of the input/output and the +4 dBu/-10 dBV switches which will continue to operate indepen- dently. The stere[...]
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Page 10
Threshold to OFF. Turn on all instruments to be gated but do not pass program material through them (For example, turn your microphone on but do not sing through it). Increase the Threshold (clockwise) until the red CLOSE LED comes on. Any background noise should now be eliminated. Example: To remove hiss from a guitar amp signal, set the Threshold[...]
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Page 11
Noise Gate Meter (Open or Closed) When the noise gate is closed (i.e., the input signal is below the noise gate threshold), the red Close LED is lit. When the noise gate is open and letting through the input (i.e., the input signal is above the noise gate threshold), the green Open LED is lit. The red Close LED fades from on to off over the time se[...]
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Page 12
Keying Application: Ducking A typical use of keying is to lower background music in the presence of narration. This is called ducking because the music "ducks" to get out of the way of the narration. A similar application would be to lower the level of a rhythm guitar while a vocalist is singing. To perform duck- ing: 1. Process the signa[...]
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Page 13
Frequency-Dependent Limiting Application: De-Essing Some vocalists and announcers, especially if equalized for more treble, will produce excessive "sibilance" ("S" sounds, concentrated mostly in the upper midrange and treble). In this situation, the limiter would ideally limit the signal only when high frequency "S" so[...]
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Page 14
1.9 TROUBLESHOOTING Noisy or "squeezed" sound - Too low a limiting threshold and/or too high a compression ratio can result in such problems as squeezed, un- natural sounds or excessive noise. Remember, limiting lowers the in- put signal's dynamic range. If the input signal has a dynamic range of 60 dB and you apply 15 dB of limiting[...]
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Page 15
Heavy distortion - If the +4/-10 switch is set to -10, try setting it to +4. Gate opens but will not close again- This may be caused by improper Threshold adjustment. Reset the gate as explained in Section 1.6, under Threshold . Gate "chatters"- Reduce Threshold level and/or increase Rate control until a smooth transition occurs. 1.10 363[...]
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Page 16
1.11 APPENDIX: About Compression, Limiting, and Noise Gating Compression and limiting both affect a signal's dynamic range, although in slightly different ways. This type of signal processing can be used as an effect (e.g., increase a guitar or cymbal's sustain) or for more practical applications, such as avoiding tape saturation or restr[...]
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Page 17
AMPLITUDE VS. TIME However, the maximum peak signal level has gone from 100 in the first drawing to 50 in the second drawing. Therefore, the overall signal sounds softer. By adding output gain, we can give the limited signal a peak value of 100 again. AMPLITUDE VS. TIME 16[...]
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Page 18
This limited, amplified signal has a much higher average level than the original signal. This is why limited signals can "jump out" at you and have more punch. Commercials, for example, are often heavily limited so that they have as high an average signal level as possible. Radio and TV stations also use limiting to cope with the medium&a[...]
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Page 19
The speed with which a limiter responds to the input signal is also im- portant. If the limiter tries to follow every little nuance of music, the sound can be overly "choppy." Often, you'll want the limiter to affect dynamic range over a somewhat longer period of time. The Release control sets this time period. Clamping a signal too [...]
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Page 20
Noise Gating To understand a gate's principle of operation, consider a "manual noise gate." Suppose you're listening to an audio signal being processed by a relatively noisy effect. As long as the audio signal is present, its level will generally be higher than the noise, thus masking it. However, when the audio signal goes away[...]