Mobile Public Toilet Audio
The audio applications in mobile public toilets are mainly reflected in three aspects: creative design, voice prompts, and privacy protection.
Audio elements in creatively designed public toilets: Some mobile public toilets incorporate audio functions into their appearance through innovative design, creating unique landscapes. For example, the tape recorder-shaped mobile public toilet built by HNA Catering Truck replicates the design of an old-fashioned tape recorder with a burgundy body, featuring oversized speakers, vintage dials, and telescopic antennas, giving it the overall appearance of a 'giant audio system'. This design not only meets the basic functional needs of the toilet but also makes it a distinctive landmark in scenic areas or public spaces through a dual experience of sight and sound, combining practicality with artistry.
Intelligent functions of voice prompt devices: The human body induction voice prompt device developed by Shenzhen Waytronic is a common audio application in mobile public toilets. This device uses a pyroelectric sensor to detect when people pass by and automatically plays prompt sounds (such as 'Welcome to use' or 'Please maintain hygiene'). It supports MP3 audio format and custom voice functions, allowing it to play civilized prompts or advertising content. Some models also have timing functions, can be connected to a mobile app to set playback times, and integrate additional functions such as clock displays and relay switch outputs. For example, through relays, it can control the lighting, ventilation system, or counters in the toilet to achieve people flow statistics and improve management efficiency.
Privacy protection technology of audio devices: For public restroom scenarios, audio devices protect user privacy by playing running water sounds, white noise, or music to create a masking effect. The core technologies include:
- Audio source: Stored on chips or memory cards, supporting cross-fade between multiple audio tracks to avoid auditory fatigue;
- Control logic: Triggered by infrared sensors, manual buttons, or delayed start-up to accommodate different usage habits;
- Sound system: Requires optimization of sound pressure level, directivity, and adaptive volume functions to ensure reasonable sound coverage without interfering with the external environment. In addition, for scenarios such as public restrooms and hotel rooms, the trigger methods and installation positions of audio devices are optimized accordingly. For example, infrared sensors are used for automatic playback in public restrooms, while manual control options are provided in hotel rooms to balance privacy protection and user experience.
