English to Czech Tech/Engineering Music acoustics

Little distortions in sound which are caused by overcoming the state of inertia of the given object when it is physically induced (struck) to produce sound.¨

...the moment you switch on the generator or strike the tuning fork you create little distortions called onset transietn distortions. That is to say, the sound fist has to overcome its own inertia to be set in motion, and in doing this little imperfections crep into it.