One plant that responds to sound-induced vibration is Mimosa pudica, also known as the "sensitive plant." Vibrations induce electrical signals across the leaflets of this plant, and cells at the base of the leaflets respond to these action potentials osmotically. This response results in a sharp change in the turgor pressure in these pulvinus cells, and that pressure change, in turn, results in the folding of the blade at the pulvinus. Another pulvinus at the base of the petiole may also respond if the vibration is severe enough. This kind of response is known as seismonasty. How would this plant respond in terms of growth if its leaves were kept closed by constant vibration? If you think very long about photosynthesis in leaves as the driving force for growth, you will realize that continuous leaflet closure would inhibit rather than stimulate the growth of the plant. Indeed loud sounds (vibrations really) have been reported to negatively impact plant growth. But I could be wrong, because there is no actual report or scientific study in relations of botanic enrichment due to sound. Just keep in mind that your plants can and will benifit off of this. I like to call this process EVS(electronic vibration showers). Stimulates the moving flow of Nitrogen in the plants system. Thus preping factors of which create C21,H30,O2 (THC).