Range: The range between the highest and lowest pitches of an instrument or human voice.
Timbre: Also known as sound, one of the basic attributes of sound, such as Erhu and Pipa, is different timbre.
Sound dyeing: The opposite of music's natural neutrality, that is, sound dyes some characteristics that it did not have. For example, the kind of sound that comes from speaking to a jar is a typical sound dyeing. Sound coloring indicates that there are more (or less) components in the replayed signal, which is also a distortion.
Distortion: The output of the device can not completely reproduce its input, resulting in waveform distortion or signal components increase or decrease.
Dynamics: The range of areas that allow recording of maximum and minimum information.
Transient response: The ability of equipment to follow burst signals in music. The equipment with good transient response should respond as soon as the signal arrives, stop as soon as the signal stops, and never drag mud with water. (Typical instrument: piano)
Signal-to-noise ratio (SNR): Also known as signal-to-noise ratio (SNR), the useful components of a signal are often expressed in decibels when compared with the strength of a noise. The higher the signal-to-noise ratio of the device, the less noise it produces.
Air sense: Acoustic term used to denote the openness of a treble or the space between instruments in a sound field. At this time, the high frequency response can be extended to 15 kHz-20 kHz. The antonyms are "dull" and "thick".
Low-frequency extension: refers to the lowest frequency that an audio device can reproduce. It is a scale used to determine the extent to which the sound system or speaker can descend during bass playback. For example, a small subwoofer can extend to 40 Hz at low frequencies, while a large subwoofer can dive to 16 Hz.
Bright: refers to highlighting the high frequency band of 4kHz-8kHz, when the harmonic is relatively stronger than the fundamental wave. Brightness itself is not a problem. Live concerts have bright voices. The problem is that it's so bright that it's annoying to be too bright (or even screaming).