What is a chord?

The chord here is also called polyphony, which refers to the sum of the pronunciation numbers of each channel in MIDI, which is different from the chord in music theory. Chord ringtones are richer in timbre and more stereoscopic than the previous monophonic ringtones. At present, there are many kinds of chords in domestic mobile phones, such as 4, 16, 24 and 40.

The number of chords in a mobile phone is equal to the number of tracks in midi format, but each track of the mobile phone is a single-tone track, which is the biggest difference from midi that we often listen to on the computer, and also the origin of the influence of chord number on the ringtone effect.

A chord is a combination of three or more sounds at the same time or successively according to a certain interval relationship, which is called "chord". In traditional harmony, three-dimensional superposition is the principle of chord formation. Usually pronounced at the same time When you press 1, 3, 5 on the piano at the same time, the sound is major triad with 1 as the root. The advantage of chords is that the sound is full, beautiful and expressive. Major triad sounds loud, and the minor chords are euphemistic.

The so-called electronic music midi format is to record the timbre, sound name, loudness, angle, time and so on of each sound, and query the color library according to the record to get the sound to be emitted. Simply put, each track corresponds to an instrument, and the music played by the instrument at each moment is recorded in a specific format. For example, at a certain moment, a chord composed of the above-mentioned 135 is recorded on the audio track defined as piano, and then the chip queries the sound library to get the corresponding sound effect, and then performs synthetic playback. Therefore, the sound library is the key factor that affects whether midi is good or not, and a good sound library occupies a lot of space.

The method of recording music by mobile phone is the same as or similar to midi. The recorded sounds are all single tones, and no complicated chord sound effects are recorded. In that case, why are our mobile phones so beautiful? Since you can't press "135" on one piano at the same time, you can press 1, 3 and 5 on three pianos at the same time. In fact, this is how cell phone chords are realized. Although this kind of chord is not as good as the real chord, it is almost confusing to release it from the mobile phone. This process of changing a chord on one instrument into a single tone of N instruments seems to be called "chord decomposition". If you often use psmplay to convert ringtones, when the converted midi is complicated, you will be prompted that "the number of broken strings exceeds16 ..." Similarly, many songs that sound good on the computer are directly transmitted to the mobile phone without decomposition, and the effect is much worse. As long as you look at it with a good midi editing software, you can find that there are often many tracks in a song with the same tone, and each track is a tone.

Therefore, a 16 "chord" mobile phone can make five instruments emit three chords at the same time, and a 40 "chord" mobile phone can make five instruments emit seven chords at the same time, or 13 instruments emit three chords at the same time, or ...... The more "chords" there are, the more combinations there may be, and the richer the timbre will be. This is the sound effect difference caused by the number of "chords" in mobile phones.

At present, the mobile phone ringtones sold in the domestic market can be roughly divided into monosyllabic ringtones, 3 chord ringtones, 4 chord ringtones, 16 chord ringtones, 32 chord ringtones, 40 chord ringtones and 64 chord ringtones. Monotone and chord are very different; The tones of chord 4 and chord 16 are too simple and quite different. The ringtones of chords 40 and 32 are not very different, but the ringtones of chords 64 and 40 are very different. In short, triad and quartile are a level, 16 chord is a level, 32 chord and 40th chord are a level, and 64 chord is a level.

We ordinary consumers can't hear the difference between chords because our ears are not professionally trained. If each of us can hear how many chords there are in a piece at a time, then everyone can become a musician. Chords only play the role of embellishment, which does not mean that the more chords, the more beautiful the music will be.