No, sound is not considered a matter wave. Sound waves are mechanical waves that require a medium (like air, water, or solid objects) to travel through. They are a form of vibration or disturbance in the medium that propagates through the medium by transferring energy from one particle to another. Sound waves are longitudinal waves, meaning that the particles of the medium move in the same direction as the wave.
Matter waves, on the other hand, are a concept from quantum mechanics, which describes the wave-like behavior of particles, like electrons, that exhibit both particle and wave properties. These waves are associated with the probability of finding a particle in a certain position and do not require a medium to propagate.
In short, sound is not a matter wave because itβs a mechanical wave that depends on the motion of particles in a medium, while matter waves are related to quantum particles like electrons and do not require a medium.