Sound detecting alarm

The invention discloses a sound detecting alarm which comprises a sound detecting module and an SCM control module, wherein the sound detecting module can preset characteristic frequency to be detected by adjusting a knob, detect various characteristic sounds, such as breath sound, footstep sound, impact sound of jewelries, sound emitted by paper medium objects, and the like and generate a trigger signal when detecting the sound at the preset frequency; the SCM control module is used for receiving the trigger signal of the sound detecting module and transmitting a corresponding control command to a voice alarm playing circuit and a wireless transmitting module so that the voice alarm playing circuit and the wireless transmitting module execute an alarm function; the voice alarm playing circuit can prerecord alarm prompting sound and play an alarm prompt under the action of the command of the SCM control module; and the wireless transmitting module transmits wireless information under the action of the command