Foreword: We read a lot of commentary on home theater equipment in magazines or on the website, and we will use some audio terminology. For example, image, low frequency, two-way, three-way, inverted design and so on. For many primary home theater enthusiasts, these words may be relatively new, but due to professional limitations, it is difficult for us to directly get more information to help understand the product. Therefore, to overcome the first hurdle of audio entry, we must first understand the meaning of these words. Here China Home Theater Network summarizes all common home theater audio terminology and gives a detailed introduction. Today, we will explain to you some of the home theater audio professional vocabulary that we have contacted with introductory articles, contact with product manuals, and often encountered. Here we divide it into two parts, namely the speaker part and the sound card part. Speaker articles: Sound effects, sounds and sound quality 1, sound effects: In general, after the original sound is recorded, the sound wave modification in the mixer will have some unreasonable effects. In hardware, this process is usually done through the DSP chip, and if the software is used, it can also achieve some effects. Sound effects can also be achieved through software A variety of sound effects can be achieved by making some adjustments to the audio file. 2, sound quality: Unlike sound effects, sound quality is a name that reflects the characteristics of the equipment itself. He can't change without modifying the hardware. Therefore, the sound quality and sound effects are essentially different. What is the sound quality? Sound quality is actually the quality of sound. When you are talking about the quality of a pair of shoes. You must refer to fit, comfortable, and durable, rather than referring to its shape, not good-looking, not fashionable. Similarly, when you are talking about the sound quality of a sound equipment, you are not saying how it is level or positioning, but rather refer to this equipment as "tolerant"! Therefore, measuring equipment Whether the sound quality is good or not, there is actually only one standard, and it is resistant to hearing. 3, tone: The cello has a fascinating tone The tone is the color of the sound. In English, the sound quality (TONE QUALITY) and the sound (TIMBRE or TONE COLOR) at a glance, it is not the same thing. Usually, the warmer the sound, the softer the sound; the colder the sound, the harder the sound. Physically, the tone is also called a sound, which is a feature of the sound that is felt by the hearing. Pure tone does not have a tone problem, and polyphony has a different tone. The tone is mainly determined by the spectrum of the sound, that is, the composition of the pitch and each harmonic, and also related to the time characteristics of the waveform, sound pressure and sound. If the record of the phonograph reverses, the spectrum of the sound does not change, but the tone changes significantly. It is. This means that the tone is largely related to the characteristics of the amplitude rise and fall of each overtone at the beginning and at the end. Although everyone has different opinions, "beauty" still has a "consensus" that everyone recognizes. You can't say that a person with a nose is "the embodiment of beauty"; the same you can't say the sound. This is our consensus on the beauty of the sound. 4. Crossover point: In general, the speaker unit that does not pass the aperture is suitable for the application of the band. Therefore, it is difficult to achieve the desired playback effect with only one unit. Therefore, most speakers use the lowest two-way design. Edifier R1900RII 06 version of the crossover When it comes to the crossover point, you can't say the frequency divider. The frequency divider actually achieves the purpose of shunting the audio signal by different impedances of the different frequency signals through the LC oscillator circuit components. Therefore, it is actually a high-pass filter circuit and a low-pass filter circuit. The high-pass filter circuit can pass the high-frequency signal, and the low-pass filter circuit can pass the low-frequency signal. The crossover point refers to the lowest value of the signal frequency of the high-pass filter circuit of the frequency divider in the ideal state, or the highest value of the signal frequency of the low-frequency filter. 5. Sensitivity: Treble units generally have higher sensitivity than woofer units For the amplifier, the sensitivity generally refers to the voltage of the signal applied to the input terminal when the rated output power or voltage is reached, so it is also called the input sensitivity. For the speaker, the sensitivity refers to applying 1W of input power to the speaker. How many decibels of sound pressure can be produced at a distance of 1 meter ahead. Therefore, to measure whether a set of speakers is good or not, the sensitivity of the unit is more valuable than the impedance index, and the unit with large impedance is not necessarily difficult to push. 6, sound field The sound field is literally interpreted as the space occupied by the elastic medium in which sound waves exist. In actual commentary articles, we often describe the directivity of a speaker with sound field openness. It actually refers to the width of the sound that the speaker can reflect when we actually listen to it (the sense of depth is the noun that describes the depth of the sound field). 7, directionality
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