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sustain

In sound and music, an envelope describes how a sound changes over time. It may relate to elements such as amplitude (volume), frequencies (with the use of filters) or pitch. For example, a piano key, when struck and held, creates a near-immediate initial sound which gradually decreases in volume to zero.
Envelope generators, which allow users to control the different stages of a sound, are common features of synthesizers, samplers, and other electronic musical instruments. The most common form of envelope generator is controlled with four parameters: attack, decay, sustain and release (ADSR).

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  1. Framing

    Vaillant ecoFIT Sustain boiler query.

    I have a Vaillant ecoFIT Sustain (system?), boiler, with hot water tank. We have hot water and radiators heat fine. My query is that only the radiator symbol on the boiler has been set (70 degrees), the ‘tap‘ symbol says ‘off’. I guess it’s the same temperature for both hot water and to heat...
  2. voyagerxp

    How To Pressurise An Ecotec Sustain 28 R1 Boiler

    As the title say can you advise me on how to pressurise an Ecotec Sustain 28 R1 boiler. The old boiler at my old property was an older model and when istalled the guy showed me how to do it.It was simply turn one tap and turn the other until pressure was set then turn the taps back to default...
  3. K

    Vaillant ecoTec Sustain and an Automatic Bypass

    Hello all I hope you are well. This is my first Post here so..... I recently had a Vaillant ecoTec Sustain (Combi) installed under the ECO Grant Scheme to replace a 14 Year Old Ideal ISAR HE24. When the Ideal was installed in 2008 for my Mum there was also an Automatic Bypass (ABBV1) fitted...
  4. R

    F22 ecofit sustain vailliant

    Hi I have an ecofit Sustain 835 boiler and I recently removed a radiator to paint behind the skirting and now when I have replaced the radiator I have an error code f22 I know this is the water pressure however I can’t seem to see the valves under the boiler to increase the pressure again I...
    • Raz
    • Thread
    • america ecofit f22 sustain usa vailliant
    • Replies: 3
    • Forum: USA
  5. J

    Gas Rate eco tec sustain

    looking at the manual for an Eco Tec Sustain and the gas rate is in two sections, one for H gas and one for P gas. Can someone explain what H and P is ? I feel like this is something obvious I know but I have a mind blank :confused:
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