The basic concept of stereo HiFi appreciation

A noun, the electroacoustics explanation

1 it is pure: two meanings: (1) refers to the instantaneous pressure changes at the sound; intercropping sine (2) refers to a definite single tones.

2: refers to pitch in the lowest frequency composite sound.

3 these partials in higher frequency sound: compound, its frequency components of pitch could pitch is a multiple of frequency, also can not. All kinds of instruments with different method can produce a quantity and strength of different components, even the sound the same also can have different pitch of timbre.

4 sound: elastic medium wave propagation, originated in a voice shaking. Body, Acoustic range for the above 20KHz, 20Hz - 20KHz acoustic frequency for ultrasonic frequency waves, 20Hz below for lethal infrasonic sound, ultrasonic and wares generally cannot cause hearing, only the frequency between them, we can listen to the sound of waves to hear the sound and called.

May: refers to the field is medium soundwave area. Different source and environment can be formed in different fields.

6: "volume loudness," the human ear to the volume of a kind of feeling. Depends on intensity and frequency and waveform.

7. Also called "YinPin tone:", mainly by its homophonic variability and various homophonic relative amplitude.

Second, the person of the auditory characteristics

The human ear to the voice, and the sound tones, and sensitive degree is different, large difference.

1 to reproduce human ears: sound direction and distance, the ability to discern location is very strong. The hearing ear. "call" characteristic reproduce

2 for small sense loudness, as long as loudness increases slightly ear can feel, but when a voice to increase capacity, even if again after the value of human feeling, but no significant change. Usually the hearing by frequency can be divided into three parts to determine the relationship between low, medium and high frequency. Namely: bass frequency band, 20Hz - 160Hz alto 160Hz - 2500Hz, high frequency 2500Hz 20KHz one.

3 timbre feeling: refers to the human ear to tone of a kind of special hearing in Taiwan sex.

4 focus: one of the auditory characteristics from many voices can be focused to a certain point. If we hear the symphony, energy and listening to the sound of playing the violin, and other instruments of music will be cortex inhibition, make you feel hearing is simple violin. This inhibitory ability because of the person different, often do exercise of hearing suppression ability is strong, we put the human ear hearing characteristics such as "focus on effect". Do the exercise, can improve the human ear hearing the sound of a spectrum analysis, the quality and the ability to identify and level.

Third, the influence of the main technical quality, tone

1 frequency range (units) : power amplifier speed regulation in the distortion degree and rated power output of working conditions, namely the bandwidth of the lowest frequency amplifier to the highest frequency range between.

2 the frequency response (unit: dB dB) : power amplifier output gain over the input signal frequency change and ascension or attenuation and phase lag and variable frequency with the input signal. The index is the quality inspection power amplifier is one of the most important, the smaller the db, power amplifiers, frequency response curve of the flat, distortion, the reduction of signal and the ability to reproduce. A good sound equipment, except to the various Musical Instruments, but also the phonological reappearance of instruments, the position of distance, the scene reappear.

Four, hi-fi meaning

Whatever personal preference is what color, or if the timbre and original play musical instrument tone with hearing differences, there can be a good equipment. Hi-fi stereo (Hi), the real meaning of Fi reductive degree is high. If you can produce the audio equipment of original Musical Instruments, then not hi-fi equipment. When we use the subjective judgment hearing a stereo, should pay enough attention to this point, not because of personal preference and influence the correct judgement and improve the capability of identification. We will improve the ability of music appreciation, must listen more and more. Each kind of instrument has its unique spectrum, tone, play music, speaker system of sound and practical instrument playing tone is different from those how etc. In contrast, listening to understand some of the first acoustic nouns concept, one of the auditory characteristic and the audio equipment of main technical parameters.