In audio , the dynamics of a bit is the variation in loudness involving notes or phrases. Dynamics are indicated by specific musical notation, frequently in some detail. But, dynamics markings still need interpretation by the performer depending on the musical context: for instance that a piano marking in one part of a bit might have quite different objective loudness in a different piece, or possibly a different section of the exact same piece.
The implementation of dynamics also extends beyond loudness to add changes in timbre and at times tempo rubato. Dynamics are one of the notable elements of music. Used efficiently, dynamics help musicians communicate feeling or a distinct state, and maintain interest and variety in a musical performance.
Further, a dynamic marking does not necessarily only have an effect on loudness of the music. A forte passage is not usually“the same as a piano passage but louder”. Instead, a musician will often use another approach to other aspects of expression such as timbre or even articulation to further illustrate the differences.
Sometimes this might also extend to tempo. It’s important for a performer to be able to control dynamics and tempo independently, and thus rookie musicians are often instructed”do not speed up just because it is getting louder!” . However, in some circumstances, a indicating might indicate a change of tempo.