The high frequency separation and low frequency extension of a mid-range speaker are important indicators for evaluating the performance of a speaker, and they have a direct impact on the sound quality and listening experience. Below, I will evaluate these two indicators and explore their impact on sound quality by combining relevant theories and practices.
Firstly, treble separation refers to the clarity and resolution of a speaker's sound within the high-frequency range. In music or film works, the high-frequency part is an important component that includes details of vocals, instruments, and high-frequency notes. A high frequency separation is manifested as the delicacy, clarity, transparency, and layering of high frequencies, which can accurately reproduce subtle differences in the sound source, making it sound pleasant and comfortable. On the contrary, if the separation of high notes is poor, high-frequency music or sound is prone to become blurry, distorted, and rough, making it difficult to accurately distinguish the differences in instruments and sound sources, which affects the listener's listening ability and auditory enjoyment.
The key to achieving high frequency separation lies in the high-frequency unit of the speaker. Common high-frequency units include dynamic coils, piezoelectric ceramics, and soft hard material membrane vibrators. These high-frequency units have their own characteristics and advantages, but regardless of the type of high-frequency unit used, they need to have a wide frequency response range, low distortion, and good sound wave directionality in order to effectively transmit high-frequency music signals.
Secondly, low-frequency extension refers to the ability of a speaker in the low-frequency range, also known as the depth and extension of bass. The low-frequency part is an important vocal frequency band for heavy metal, bass drums, low-frequency effect sounds, etc. in music and movies, which affects the intensity, shock, and realism of music. A speaker with good low-frequency extension can output rich low frequencies, giving people a strong sense of impact and the foundation of a music venue.
To achieve good low-frequency extension, it is necessary to consider the design and tuning of the low-frequency unit of the speaker. Common low-frequency units include pneumatic vibrators, negative edge diaphragm vibrators, coaxial low-frequency units, etc. These low-frequency units have different working principles and characteristics, but all require large diaphragm area, suitable radiation aperture, effective power input, and other features to output rich low-frequency music in the low-frequency range.
High frequency separation and low frequency extension are important indicators that need to be comprehensively considered in speaker design. The two complement each other and jointly determine the sound quality and performance ability of the speaker. A speaker should be able to achieve good balance and extension in both high and low frequency ranges, ensuring clarity and delicacy of high frequencies while outputting rich bass.
In addition to high frequency separation and low frequency extension, there are other indicators that also have a significant impact on the sound quality of a speaker, such as frequency response, distortion, and dynamic range. In practical applications, it is necessary to comprehensively consider these indicators and select suitable speaker products based on specific audio application needs and user preferences.
