[Professional audio system] The difference between professional audio equipment and home audio
The composition of professional speakers
Professional audio equipment consists of monitor mixers; power amplifier mixers; portable mixers; power amplifiers; dynamic microphones; condenser microphones; wireless microphones; speakers; monitor speakers; power amplifier speakers; subwoofers; equalizers; mixing Sounder; Effects; Delay; Compressor; Limiter; Crossover; Noise Gate; CD player; Recording deck; DVD player; Projector;
There are many types of loudspeakers: according to their energy conversion methods, they can be divided into electric type, electromagnetic type, piezoelectric type, digital type, etc.; according to the diaphragm structure, they can be divided into single cone, composite Paper cone, composite horn, coaxial, etc.; according to the beginning of the diaphragm, it can be divided into cone type, dome type, flat type, belt type, etc.; according to the playback frequency, it can be divided into high frequency, medium frequency, low frequency and Full-band loudspeaker; According to the magnetic circuit form, it can be divided into external magnetic type, internal magnetic type, dual magnetic circuit type and shielded type; Speaker; according to the diaphragm material, it can be divided into paper and non-paper cone speakers.
The cabinet is used to eliminate the acoustic short circuit of the speaker unit, suppress its acoustic resonance, widen its frequency response range and reduce distortion. The box shape structure of the speaker is divided into bookshelf type and floor type, as well as vertical type and horizontal type. The internal structure of the box has various forms such as closed type, inverted type, band-pass type, empty paper cone type, labyrinth type, symmetrical drive type and horn type. The most used are closed type, inverted type and band-pass type. .
The frequency divider has the difference of power frequency division and electronic frequency divider. The main functions of both are frequency band division, amplitude-frequency characteristic and phase-frequency characteristic correction, impedance compensation and attenuation. The power divider is also called a passive post-stage frequency divider, which is divided after the power amplifier. It mainly consists of passive components such as inductors, resistors, capacitors and other passive components to form a filter network, and sends the audio signals of each frequency band to the speakers of the corresponding frequency band for playback. Its characteristics are low cost, simple structure, suitable for amateur work, but its disadvantages are large insertion loss, low efficiency and poor transient characteristics.
The difference between professional audio and home audio
A brief analysis of the difference between professional audio and home audio:
Professional audio generally refers to professional entertainment venues such as dance halls, karaoke halls, theaters, conference rooms and stadiums. Depending on the venue, the sound requirements are different, venue size and other factors. Configure sound system solutions for different places.
General professional audio has high sensitivity, high sound pressure, good strength, and high power withstand. Compared with home audio, its sound quality is hard and its appearance is not very delicate. However, the performance of the monitor speakers in professional audio is close to that of home audio, and the appearance is generally more delicate and small, so this type of monitor speakers is also often used in home Hi-Fi audio systems.
Home audio configuration:
1. Audio source: the source of sound, which is common in home audio systems The audio sources include cassette recorders, CD players, LD players, VCD players and DVD players.
2. Amplifying equipment: In order to effectively and efficiently introduce loudspeaker sound, the signal output by the sound source generally needs to be power amplified. Now the common amplifying equipment is AV power amplifier, generally transistor power amplifier, but now some enthusiasts also In love with tube amplifiers.
3. Sound-reproducing equipment: the speaker, whose performance will directly affect the listening effect.
4. Connection line: including the connection line from the audio source to the amplifier and the connection line from the amplifier to the speaker. The distinction of sound quality
The sound quality of speakers is very important. The quality of sound quality determines the influence of music on people’s mind and body. Cultivating people’s temperament, making people’s body and mind reach a harmonious state, people’s body and mind at the same time have a healthy sublimation, therefore, the quality of sound quality is equal to the quality of the body.
Good sound quality gives people an immersive feeling. This feeling comes from the depths of the soul and comes from the most authentic part of people. It brings people a feeling like It is a mother’s love for her children, which moistens things silently, but it does exist. Only one sound, it brought the shock of the soul.
The ultimate goal of the home audio system is to get the ideal listening effect, such as the sound effect of the theater at home. However, families are different from theaters. Therefore, the acoustic effects required for enjoying different types of sound are different. For pop music, classical music, light music, etc., various musical instruments are required to be correctly restored. , a sense of envelopment, etc.
Professional audio equipment has high requirements for users, and has a very good understanding of the functions and use of various equipment, professional theoretical knowledge, accurate listening ability, strong debugging level, Emphasizes troubleshooting and troubleshooting. A properly designed professional audio system should not only focus on the design and debugging of the electro-acoustic system, but should take into account the actual sound propagation environment and perform accurate on-site tuning in it. Therefore, the difficulty lies in the design and debugging of the system. .
