🕩 U+1F569 Unicode文字
Unicode
U+1F569
🕩
数値文字参照
🕩 🕩
URLエンコード(UTF-8)
%F0%9F%95%A9
ユニコード名
RIGHT SPEAKER WITH ONE SOUND WAVE
一般カテゴリ－
Symbol, Other（記号，その他）
Base64エンコード : 8J+VqQ==
「🕩」に似ている意味の文字
🕩の説明
A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A speaker system, also often simply referred to as a "speaker" or "loudspeaker", comprises one or more such speaker drivers, an enclosure, and electrical connections possibly including a crossover network. The speaker driver can be viewed as a linear motor attached to a diaphragm which couples that motor's movement to motion of air, that is, sound. An audio signal, typically from a microphone, recording, or radio broadcast, is amplified electronically to a power level capable of driving that motor in order to reproduce the sound corresponding to the original unamplified electronic signal. This is thus the opposite function to the microphone; indeed the dynamic speaker driver, by far the most common type, is a linear motor in the same basic configuration as the dynamic microphone which uses such a motor in reverse, as a generator.
The dynamic speaker was invented in 1925 by Edward W. Kellogg and Chester W. Rice issued as US Patent 1,707,570. Apr 2, 1929. When the electrical current from an audio signal passes through its voice coil—a coil of wire capable of moving axially in a cylindrical gap containing a concentrated magnetic field produced by a permanent magnet—the coil is forced to move rapidly back and forth due to Faraday's law of induction; this attaches to a diaphragm or speaker cone (as it is usually conically shaped for sturdiness) in contact with air, thus creating sound waves. In addition to dynamic speakers, several other technologies are possible for creating sound from an electrical signal, a few of which are in commercial use.
In order for a speaker to efficiently produce sound, especially at lower frequencies, the speaker driver must be baffled so that the sound emanating from its rear does not cancel out the (intended) sound from the front; this generally takes the form of a speaker enclosure or speaker cabinet, an often rectangular box made of wood, but sometimes metal or plastic. The enclosure's design plays an important acoustic role thus determining the resulting sound quality. Most high fidelity speaker systems (picture at right) include two or more sorts of speaker drivers, each specialized in one part of the audible frequency range . The smaller drivers capable of reproducing the highest audio frequencies are called tweeters, those for middle frequencies are called mid-range drivers and those for low frequencies are called woofers. Sometimes the reproduction of the very lowest frequencies (20-~50 Hz) is augmented by a so-called subwoofer often in its own (large) enclosure. In a two-way or three-way speaker system (one with drivers covering two or three different frequency ranges) there is a small amount of passive electronics called a crossover network which helps direct components of the electronic signal to the speaker drivers best capable of reproducing those frequencies. In a so-called powered speaker system, the power amplifier actually feeding the speaker drivers is built into the enclosure itself; these have become more and more common especially as computer speakers.
Smaller speakers are found in devices such as radios, televisions, portable audio players, personal computers (computer speakers), headphones, and earphones. Larger, louder speaker systems are used for home hi-fi systems (stereos), electronic musical instruments, sound reinforcement in theatres and concert halls, and in public address systems.[出典:Wikipedia]
🕩の文字を使った例文
🕩 前進、右旋回、停止、左旋回、バック...この5つの操作によって、私たちは自動車を操作しています。しかし、自動車にはそれ以外にもたくさんのシステムがあります。例えば、加速・減速やブレーキ操作を行うことで、車両は速度の変化に対応し、目的地に到着することができます。 🕩 また、自動車は燃料を燃焼させることで動いていますが、エンジンの油圧や冷却水、ベルトやプーリーなどの部品も必要不可欠です。これらの部品を正常に動かすためには、車両の適切なメンテナンスが不可欠です。そうすることで、車両の寿命を延ばし、安全かつ快適なドライブを実現できます。 🕩 しかし、自動車にはまだまだ進化の余地があります。近年では、自動運転技術や環境に優しい電気自動車の普及が進んでいます。自動運転技術を採用することで、ドライバーの負担が軽減されたり、交通事故のリスクを低減することが期待されています。また、環境に優しい電気自動車は、排出ガスを大幅に削減することができます。 🕩 さらに、自動車は人間の生活に密接に関係しています。自動車を運転することで、仕事や学校、買い物など、日々の生活がよりスムーズになることができます。また、自動車業界は多大な経済効果を持ち、雇用を生み出し、地域の経済発展にも貢献しています。 🕩 ただし、自動車が抱える問題もあります。交通事故は、毎年多くの人命を奪っています。また、燃料を燃やすことで発生するCO2は、地球温暖化に大きく関与しています。これらの問題に対しては、ドライバーの安全運転や、環境への配慮が求められています。 🕩 未来の自動車は、より安全で、より環境に優しく、より便利なものになることが期待されています。自動運転技術の発展や、電気自動車の普及など、さまざまな技術の進化が期待されています。私たちは、技術の発展に伴い、自動車が持つ最大の可能性を追求し、より快適で安全な社会の実現を目指していきたいと思います。(この例文はAIにより作成されています。特定の文字を含む文章を出力していますが内容が正確でない場合があります。)