How accurate can the mobile phone radio be? 150

Compared with the electric piano, the pure artificial tuning will artificially create errors in the treble and bass area, and the two tuning staff explained to me that the human ear does not distinguish between the bass and treble, so the bass should be low, and the treble should be a little higher. Here's their explanation.

The electric piano is carried out exactly according to the 12 equal law, that is, the ratio of the adjacent 2 notes is a fixed 12th root number 2, the mathematical formula is that the A tone is 440 Hz, and the other pitches are 440*2 (m 12), so that the A key of each group on the keyboard becomes 2 minutes 1 of 440, 1 quarter of a year... or 2x, 4x, 8x. This is also the formula for calculating frequency.

According to this formula, all sequences can be listed. It is easy to identify with mobile phone or computer recognition software.

It is also possible to use a mobile phone to tune the piano or computer software, do not use those analog keyboards to tune, the computer version is recommended to use ear training software to tune, the pitch is super accurate, the iOS mobile phone has a sound training software, you will be close to the mobile phone to the piano, the interface displays the name of the scale, the most convenient when tuning the piano, the mobile phone also has some real advance spectrometers, with a fixed frequency generator. It can also be used, and there will be errors in the recognition of the mobile phone tuning, and the performance is those who sing hi c, and the mobile phone software recognizes the same sound. However, the human ear can clearly hear the difference, that is, the ability to recognize harmonics is not accurate.

Glad for your question. As long as you say it in Mandarin, you can basically receive it.

This one is very simple, you can put the sound of the phone.

Go to a place with a good signal to listen to the effect, and if the signal is received, you can't receive it.

There is not much difference, the working principle is basically the same, but there is a slight difference in signal reception, ordinary radios have external antennas, and mobile phones have to be plugged into headphones, so mobile phones may be worse than ordinary radios in signal reception; In operation, ordinary radios are turned knobs to switch channels, while mobile phones can switch channels by pressing buttons or inputs, and the channel switching on mobile phones is more accurate than ordinary radios.

A radio is a small radio receiver. It is mainly used to receive radio broadcasts and listen to radio transmitters, usually entertainment and information programs sent by radio stations. It has radio receivers that are different from those for military use, the latter is not broadcasting.

In fact, in the same place there is a big difference in the main frequency, but due to the limitations of mobile phones, some effects are definitely not as good as ordinary radios.

The frequency and band of the mobile phone network are different from those of the radio station, so the effect will be worse in terms of reception.

In layman's terms, it means that the curvature of the antenna in the mobile phone is suitable for mobile communication, not for radio stations.

The radio on the mobile phone must be plugged into headphones.

Summary. Because the sound generating unit is smaller. The principle of vocalization is also different. The allocation of resources to the body is also different.

The voice unit of the landline is large, and the landline also serves the microphone as a whole, so the sound quality is relatively good. The current mobile phone is different, the sound unit must be made small, one is to make the body more compact, on the other hand, to make room for the motherboard and other parts, and the body resources are allocated to the system as much as possible. Although a small sound generating unit can also make a good sound quality, the cost will be very high, so the small sound generating unit used is quite average, and the natural sound quality will decline.

Why is the radio effect of the mobile phone better than the fixed **.

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The phone is quiet, and the microphone is not very loud.

So the sound is good.

But the call sound quality is not fixed** good.

Because the sound generating unit is smaller. The principle of vocalization is also different. The allocation of resources to the body is also different.

The voice unit of the landline is large, and the landline is also erected to serve the microphone, so the sound quality is relatively good. The current mobile phone is different, the sound unit must be made small, one is to make the body more compact, on the other hand, to make room for the motherboard and other parts, and the body resources are allocated to the system as much as possible. Although the sound unit is small, it can also make a good sound quality, but the cost will be very high, so the small sound unit used is quite general, and the natural sound quality will be reduced.