What are the specific requirements for the performance of Bluetooth speakers?
Publish Time: 2024-08-22
The performance requirements of Bluetooth speakers usually include the following aspects:
Bluetooth connection performance
Bluetooth version: The higher the Bluetooth version, the faster the transmission speed, the lower the power consumption, the stronger the connection stability, the wider the signal coverage, and the more compatible devices. The mainstream in the market is Bluetooth 5.0 and above.
Compatibility: It should be able to be successfully paired with a variety of common Bluetooth devices (such as mobile phones, tablets, laptops and other devices with different operating systems and brands), and the pairing process is simple and fast without complicated operations.
Transmission distance: In an ideal environment without physical barriers, it should have a long transmission distance, generally at least about 10 meters; in the case of physical barriers such as doors and walls, it can also maintain a certain effective connection distance and signal stability.
Anti-interference ability: In a complex environment with other radio signals (such as routers, other 2.4G devices, etc.) around, it can still be stably connected and is not easily disturbed and disconnected, stuck and other problems.
Audio performance
Sound quality:
Frequency response: It should cover a wide frequency range to accurately restore sounds of different frequencies, such as rich bass (such as 20Hz - 200Hz), full midrange (200Hz - 2000Hz) and clear treble (2000Hz - 20000Hz).
Distortion: The lower the better. Low distortion can ensure that the output sound signal is as close as possible to the input audio signal, avoid sound distortion, and make the played music real and natural.
Signal-to-noise ratio: A higher signal-to-noise ratio means that when the speaker plays audio, the signal sound is clearer and louder than the background noise. Generally, a signal-to-noise ratio greater than 70dB can meet the basic requirements. The higher the value, the better the audio quality.
Channel: Dual-channel or multi-channel Bluetooth speakers can provide richer stereo sound effects and spatial sense than mono, giving users an immersive feeling.
Volume: It has a large enough volume output capacity to meet the needs of different scenarios, and can provide clear and loud sound whether in a quiet indoor environment or a noisy outdoor environment.
Sound positioning: For some specific types of music (such as symphony, etc.) or game scenes, it can accurately present the location of different instruments or sound sources, enhancing the layering and realism of the audio.
Functional characteristics
Battery life: The battery capacity should be large enough to ensure a long use time after a single charge, such as continuous playback time of 6-10 hours or more, and the charging speed is fast. For Bluetooth speakers that are often used outdoors, battery life is particularly important.
Waterproof and dustproof performance: If used outdoors or in an environment where it may be exposed to water and dust, it should have a certain waterproof and dustproof level, such as IPX4 and above, which can effectively prevent water splashes and dust from entering the speaker and avoid damaging the internal circuit components.
Convenience of operation: The control buttons are reasonably designed and easy to operate. For example, they have clear function buttons for volume adjustment, play/pause, switching tracks, etc. Some also support touch control or remote control through mobile phone APP.
TWS function (True Wireless Stereo): Two Bluetooth speakers that support this function can form a stereo system, realize the separation of left and right channels, and provide a wider sound field and stronger sound effects.
Voice prompts: When turning on, pairing, low battery, etc., the user can be prompted by voice to understand the working status of the speaker.
Built-in microphone: used to realize the Bluetooth call function, and the call quality is clear, without obvious noise, echo and other problems, which can meet the needs of users when answering calls.
Appearance design
Size and weight: Design reasonable size and weight according to the usage scenario and needs. For example, portable Bluetooth speakers should be small and light, easy to carry; while home Bluetooth speakers are relatively flexible in size and weight, but the rationality of the placement space should also be considered.
Material and craftsmanship: The shell material should have good texture and durability, such as metal, plastic and other materials, with fine surface treatment technology, without defects, burrs and other problems, which can not only improve the aesthetics of the speaker, but also ensure its stability and reliability during use.
Color and shape: The appearance color and shape should conform to the current aesthetic trend, have a certain sense of fashion and personalized characteristics, be able to attract consumers' attention, and be coordinated with the use environment.
