What is Recording Software?

Recording software is a computer software for recording purposes that runs under the background of a personal computer. You can record the internal or external sound of the computer, save the recording file in digital audio format, and save it to the hard disk permanently.

Recording software

Recording software is a computer software for recording purposes that runs under the background of a personal computer. You can record the internal or external sound of the computer, save the recording file in digital audio format, and save it to the hard disk permanently.

Chinese name

Recording software

Use

Save sound

Principle

Electromagnetic induction

Features

Keep forever

1. It can record the internal or external sound of the computer (such as the microphone, line input, Internet broadcast or sounds played by various audio and video playback software), and save the recorded file as digital audio formats such as WAV, MP3, WMA, M4A, etc. Hard drive.

2. Support multiple sound cards and selective recording of different hardware ports.

3. Silent recording in the background.

4, with volume adjustment, task timing recording and other functions.

5, with certain advanced features such as male and female voice change.

6. Friendly interface, operation is usually simple and convenient.

The sounding principle of the speaker in the speaker is actually very simple, that is, the electromagnetic current phenomenon is used to convert the changing current into the vibration of the pelvic membrane, thereby generating air vibration, and then the human ear will hear the sound. Therefore, as long as the frequency is within the acceptable range of the human ear and a sufficiently strong current is input to the horn, the human ear can obtain the sound pressure within a sufficiently close sound field distance, that is, hear the sound. Of course, in addition to the speakers on multimedia active speakers, there are current amplification and power amplification devices. The approximate role of these devices is to amplify the input current and power to the range where the speakers can produce sound. The function of the sound card on the computer is to buffer, process, shunt, and convert digital audio data from the CPU, and then transmit the current carrying the analog signal to the speaker through the audio interface to make it sound.

Now that the principle of electric sound should be relatively clear, Edison invented the gramophone to use this principle, engraving the curve of the sound wave on the record, and then passing the stylus along the wave line to generate vibration, and the current can be amplified by the sound . This is actually what is called an analog signal, that is, a smooth curve is used to represent sound waves, but computer data can only be represented by 1 and 0, then how should a computer represent sound waves?

Converting analog audio to digital audio is called sampling in computer music. The main hardware device used in the process is analog to digital converter (Analog to Digital Converter, ADC). The sampling process actually converts the electrical signal of a normal analog audio signal into a number of binary codes 0 and 1 called "Bits". These 0 and 1 constitute a digital audio file.

How does digital audio play out? First, the music described by a large number of numbers is sent to a line called Digital to Analog Converter (DAC). It digitally plays back a series of corresponding voltage values, then passes through a holding line that helps to stabilize, and finally the signal is output by a low-pass filter. In this way, the relatively smooth analog signal with a pulsating voltage can continue to be sent to the amplifier and speaker, and the current is amplified and then converted into sound.