A terminal device, comprising: a housing having a flexible structure and being able to bend at the flexible structure; an audio cavity component located within the housing , wherein a deformation state is able to be formed at the audio cavity component corresponding to a deformation occurring at the flexible structure of the housing ; and a processing component, configured to determine, based on the deformation state of the audio cavity component , an audio processing parameter matching the deformation state of the audio cavity component ; characterized in that the terminal device further comprises: a rotation shaft located within the housing , wherein the rotation shaft is configured to, when an external force is applied onto the rotation shaft via the housing , rotate and drive the housing to bend at the flexible structure; wherein the audio cavity component is configured to, when the housing bends, form the deformation state corresponding to the rotation of the rotation shaft ; wherein the audio cavity component comprises: a first audio cavity with a deformable structure and arranged at a side of the rotation shaft facing an inside of the housing ; wherein when the rotation shaft rotates a first rotation angle, the first audio cavity is in a first deformation state; when the rotation shaft rotates a second rotation angle, the first audio cavity is in a second deformation state; and when a rotation angle of the rotation shaft is between the first rotation angle and the second rotation angle, the first audio cavity is in a third deformation state; a second audio cavity , connected to the first audio cavity ; and a third audio cavity , connected to the first audio cavity ; wherein the second audio cavity and the third audio cavity are located on both sides of the first audio cavity . a housing having a flexible structure and being able to bend at the flexible structure; an audio cavity component located within the housing , wherein a deformation state is able to be formed at the audio cavity component corresponding to a deformation occurring at the flexible structure of the housing ; and a processing component, configured to determine, based on the deformation state of the audio cavity component , an audio processing parameter matching the deformation state of the audio cavity component ; a rotation shaft located within the housing , wherein the rotation shaft is configured to, when an external force is applied onto the rotation shaft via the housing , rotate and drive the housing to bend at the flexible structure; wherein the audio cavity component is configured to, when the housing bends, form the deformation state corresponding to the rotation of the rotation shaft ; wherein the audio cavity component comprises: a first audio cavity with a deformable structure and arranged at a side of the rotation shaft facing an inside of the housing ; wherein when the rotation shaft rotates a first rotation angle, the first audio cavity is in a first deformation state; when the rotation shaft rotates a second rotation angle, the first audio cavity is in a second deformation state; and when a rotation angle of the rotation shaft is between the first rotation angle and the second rotation angle, the first audio cavity is in a third deformation state; a second audio cavity , connected to the first audio cavity ; and a third audio cavity , connected to the first audio cavity ; wherein the second audio cavity and the third audio cavity are located on both sides of the first audio cavity . <EOS>