The _ speaker speaker type (horn type)

The classification method of the loudspeaker is classified according to the working principle: the speakers are mainly divided into the electric speaker, the electromagnetic speaker, the static type and the piezoelectric speaker.
1、Electric speaker: the speaker uses a power conductor to make a sound circle, and when an audio current signal is entered in the voice coil, the voice coil is equivalent to a current carrying conductor. If it is placed in a fixed magnetic field, according to the principle of the action of the current carrying conductor in a magnetic field, the voice coil is proportional to the frequency of the audio frequency and the direction changes with the audio current. In this way, the voice coil will vibrate in the magnetic field, and drive the vibration of the diaphragm, and the air around the diaphragm is also vibrating, so that the electrical signal is converted into sound waves. This speaker is the most widely used.
2、Electromagnetic loudspeaker: also called reed loudspeaker, the sound source signal current through the voice coil will put soft material made of reed magnetized and magnetized can vibration reed and magnet mutual attraction or rejection, generating a driving force, so that the vibration of the vibrating diaphragm and pronunciation.
3、Electrostatic speaker: the speaker uses the principle of capacitance, is about to electrically conductive film and fixed electrode in the opposite polarity configuration, forming a capacitor. The sound source signal is applied to the poles of the capacitor, and the electric field intensity is changed to produce the attraction, which drives the vibration of the diaphragm.
4、Piezoelectric speaker: the use of piezoelectric material by the electric field role in the occurrence of deformation of the principle, the piezoelectric element placed in the electric field of the audio current signal, so that the occurrence of displacement, and thus produce a reverse voltage effect, and finally drive the diaphragm sound.
According to the shape of the film shape: the main speakers have a cone, Hira Igata, the ball shaped, ribbon shaped, thin, etc..
1、The most widely used in the conical diaphragm loudspeaker is the conical paper bowl loudspeaker, which is the most common and widely used speaker in the electric loudspeaker, especially the application of the low.
2、Flat panel speaker: is also an electric type loudspeaker, its vibrating film is flat, the overall vibration directly to the outside radiation sound. Its plane vibration film is a circular plate, the middle of the plate is made of aluminum foil, the peak of the core, both sides covered with glass fiber. Its frequency characteristic is relatively flat, bandwidth and distortion is small, but the rated power is small.
3、Dome - shaped Speaker: a ball - shaped speaker is one of the electric speakers. The working principle of the ball is the same as that of a paper bowl. The salient features of the spherical dome shaped speaker are good transient response, low distortion, good directivity, and low efficiency, which are used as the medium and high - high unit of the speaker system.
4、Horn speaker: working principle and electric horn loudspeaker cone loudspeakers same. Diaphragm horn loudspeaker is ball shaped, or other shapes. The difference between the speaker and the other speakers mainly lies in its acoustic radiation mode, the cone loudspeaker and dome loudspeaker is composed of a vibrating diaphragm directly encouraged the surrounding air will sound radiated out of the direct radiation, and horn loudspeaker is the diaphragm generates sound the horn radiation into space, and indirectly radiation. Horn loudspeaker biggest advantage is high efficiency, harmonic distortion is smaller and strong direction, but the band is narrow, poor low-frequency response. So much as a speaker system, the use of high and medium.
According to the burst frequency: can be divided into the woofer, mid-range loudspeaker, loudspeaker, full range speaker etc..
1、Bass speaker: the main player of the low frequency signal is called the bass speaker, the bass performance is very good. Bass speaker for the lower limit of low frequency playback down as far as possible extension and the caliber of the speaker do are relatively large, generally 200mm, 300-380mm specifications of different caliber woofer, with large input power. In order to improve the tolerance value of the amplitude of the vibration cone, often with soft and wide support edge, such as edge, edge, edge skin insulation etc.. Under normal circumstances, the larger the bass speaker's caliber, the better the low frequency sound quality, the greater the input power.
2、Midrange speaker: speaker mainly play the intermediate frequency signal known as midrange loudspeaker. Can achieve convergence of frequency Squawker woofer and tweeter's music playback. Because if accounted for the entire range of leading range and feeling of the human ear of intermediate frequency than other bands sensitive and mediant loudspeaker sound quality requirement is high. A cone shaped, dome and horn type etc.. As the main performance requirement is the mediant loudspeaker, sound pressure frequency characteristics of Qu Xianping bear, small distortion, good directivity.
3、A speaker of a high frequency signal that is called a high pitched speaker. Treble speaker for playback of high frequency limit frequency access to human ears upper limit of hearing frequency 20KHz and smaller diameter, membrane vibration is tough. And low, mediant loudspeaker compared, tweeter performance requirements in addition to the same and the tenor unit, also called the playback frequency upper limit to the high input capacity to. The commonly used high - frequency speaker is a variety of forms, such as paper basin, Hira Igata, ball top, ribbon, etc..
4、Full frequency speaker: full frequency speaker is refers to the ability to also cover bass, midrange and treble the band speakers can play the whole range of audio signals. The theoretical frequency range is from tens of Hz to 20kHz, but in fact it is very difficult to use a speaker, so most of them are made of double paper basin speakers or coaxial speakers. Double paper basin speakers in the large diameter of the speaker with a small caliber of the paper bowl, used to replay the high frequency sound signal, which is conducive to the improvement of the upper limit value of the frequency response. Coaxial speaker is a two different caliber of the bass speaker with a high pitched speakers installed on the same central axis.