For the reading in this week, to be honest, the theoretical knowledge of sound is a little boring. And I did spend lots of time to understand and receive all the knowledge, but I still feel it is hard to remember all the knowledge, especially the part of microphone. Too many types of microphone need to be identified, and various functions of each microphone need to be known. Finally, I found out that it is not necessary to remember all the microphone types, and also it is difficult to remember without real goods.
After reading this article, I did know lots of new and interesting knowledge of sound. Firstly, it is the importance of sound. Except visual, sound is another good way to help imaging. Sound helps people to understand what they see with eyes, helping them to make sure are there any other meaning behind visual. For example, environmental sound can help people to find out the location of sound source. When people hear the sound of running water, they will know the sound source is near the river, sea or lake. Now, I remember the reading and lecture last week, deaf people cannot hear, but they still can fill sound and beat. Actually, sound is not simple, and a good audio can be felt by everyone.
The next part is about the definition of sound. Because sound is created by physical vibration, all the knowledge in this part is physics knowledge, a little boring. When a sound is made, the molecules in the air surrounding it are displaced and then pull back slightly, creating a pressure followed by release. That is the wave of sound. Wavelength, frequency, pitch, amplitude and velocity are proper noun of sound. The shorter the wavelength is, the higher the frequency. The larger vibration is represented by a taller sound wave.
About recording sound, the reading discusses the differences between analog recording and digital recording, and the advantages and disadvantages of analog recording and digital recording.