decay

In audio, Decay is the manner in which sound ceases. Any acoustic signal or waveform envelope of an electronic musical instrument can be said to have a few components such as attack, internal dynamics, sustain, release and decay which help define the character of the signal or waveform envelope.

Decay – The decay is the progressive reduction in amplitude of a sound over time. The decay phase starts as soon as the attack phase has reached its peak. In the decay phase, the signal level drops until it reaches the sustain level.

decay: the portion of the note immediately after the attack, just between attack and sustain. definition: clearly established pitch and attack. depth: the positive attribute of low notes; a guitar with good depth has strong – not strident, boomy or mushy – bass notes.

Decay Rate (d) is the time taken for the sound pressure level in a room to decay - measured in decibels per second (dB/s) and is related to the reverberation time by the formula T = 60 dB/d. Note : the unit of decay rate is the decibel per second.

to become gradually damaged, worse, or less; to cause something to do this: Sugar makes your teeth decay.

Decay is the time required for the reflections (reverberation) to die away. In most modern music production, reverb decay times between one and three seconds are prevalent. A reverb setting with strong early reflections and a quick decay are a great way to create a stereo effect from a mono source.

decay, decompose, rot, putrefy, spoil mean to undergo destructive dissolution. decay implies a slow change from a state of soundness or perfection. decompose stresses a breaking down by chemical change and when applied to organic matter a corruption. rot is a close synonym of decompose and often connotes foulness.

Create a stable sound field using a sound source. Start a sound measurement instrument, such as a sound level meter. Switch off the sound source and allow the sound to decay. Wait for the background sound to stabilize and stop the measurement.

Decay times show us what happens in what we call the “time domain” – simply put: decay times illustrate what sound does in a room after the initial sound is played from speakers. Certain bass problems in a room like room modes and standing waves cause certain bass notes to resonate or “ring out” in a room.

Sound decay in rooms is usually defined by absorption and scattering properties of surfaces. In some cases sound decay calculation is a rather simple task.

The process by which an unstable atomic nucleus loses energy through radiation is known as radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration).

In chemistry, the decay technique is a method to generate chemical species such as radicals, carbocations, and other potentially unstable covalent structures by radioactive decay of other compounds.