Meaning Of Microphone & Microphone Information

Meaning of microphone - On this occasion I will share a chapter that I think is important especially for those of you who work on the acoustic field. Do you know the microphone? Here are some explanations about the microphone, the type of microphone and some important things about mikrophon. Happy reading

Microphone Characteristics

The most important characteristics of microphones for live sound applications are their operating principle, frequency response and directionality. Secondary characteristics are their electrical output and actual physical design.

Operating principle
 
The type of transducer inside the microphone, that is, how the microphone picks up sound and converts it into an electrical signal.A transducer is a device that changes energy from one form into another, in this case, acoustic energy into electrical energy. The operating principle determines some of the basic capabilities of the microphone. The two most common types are Dynamic and Condenser. is a meaning of microphone.

Dynamic microphones

employ a diaphragm/ voice coil/magnet assembly which forms a miniature sounddriven electrical generator. Sound waves strike a thin plastic membrane (diaphragm) which vibrates in response. A small coil of wire (voice coil) is attached to the rear of the diaphragm and vibrates with it. The voice coil itself is surrounded by a magnetic field created by a small permanent magnet.

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It is the motion of the voice coil in this magnetic field which generates the electrical signal corresponding to the sound picked up by a dynamic microphone. Dynamic microphones have relatively simple construction and are therefore economical and rugged. They can provide excellent sound quality and good specifications in all areas of microphone performance. meaning of microphone - In particular, they can handle extremely high sound levels: it is almost impossible to overload a dynamic microphone. In addition,dynamic microphones are relatively unaffected by extremes of temperature or humidity. Dynamics are the type most widely used in general sound reinforcement.

Meaning Of Microphone & Type of microphone

Condenser microphones
 
are based on an electricallycharged diaphragm/backplate assembly which forms a sound-sensitive capacitor. Here, sound waves vibrate a very thin metal or metal-coated-plastic diaphragm.The diaphragm is mounted just in front of a rigid metal or metal-coated-ceramic backplate. In electrical terms this assembly or element is known as a capacitor (historically called a “condenser”),which has the ability to store a charge or voltage.

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When the element is charged, an electric field is created between the diaphragm and the backplate, proportional to the spacing between them. It is the variation of this spacing, due to the motion of the diaphragm relative to the backplate, that produces the electrical signal corresponding to the sound picked up by a condenser microphone.

The construction of a condenser microphone must include some provision for maintaining the electrical charge or polarizing voltage. An electret condenser microphone has a permanent charge, maintained by a special material deposited on the backplate or on the diaphragm. Non-electret types are charged (polarized) by means of an external power source.

The majority of condenser microphones for sound reinforcement are of the electret type.All condensers contain additional active circuitry to allow the electrical output of the element to be used with typical microphone inputs. This requires that all condenser microphones be powered: either by batteries or by phantom power (a method of supplying power to a microphone through the microphone cable itself).

Meaning Of Microphone - There are two potential limitations of condenser microphones due to the additional circuitry: first, the electronics produce a small amount of noise; second, there is a limit to the maximum signal level that the electronics can handle. For this reason, condenser microphone specifications always include a noise figure and a maximum sound level. Good designs, however, have very low noise levels and are also capable of very wide dynamic range.

Condenser microphones are more complex than dynamics and tend to be somewhat more costly. Also, condensers may be adversely affected by extremes of temperature and humidity which can cause them to become noisy or fail temporarily.However, condensers can readily be made with higher sensitivity and can provide a smoother, more natural sound, particularly at high frequencies. Flat frequency response and extended frequency range are much easier to obtain in a condenser. In addition,condenser microphones can be made very small without significant loss of performance.

Read too : How to Learn Vocal Music Simple & Easy

So little explanation can I say about Meaning Of Microphone & Microphone Information. Hopefully this discussion can be useful for you who read it. I also apologize for any shortcomings in terms of science that I mastered. Keep abreast of information about music and science at musicsains.blogspot.co.id

How to Learn Vocal Music Simple & Easy

How to learn vocal music - Vocal Techniques is an ongoing (three or four year) course of study that develops the fundamentals of good singing through group and voice classes. Techniques of study include exercises that develop singing skills, repertoire in several languages and formal and informal performances. It is an essential course for every vocal major each year, and a yearly requirement for graduation from The Duke Ellington School of the Arts. 

Content Standards 

Six DCPS Content Standards are basic to the core skills, concepts and knowledge for vocal techniques courses : 

Students Sing Alone and with Others, a Varied Repertoire of Music Representing Diverse Genres, Styles and Cultures Students Read, Notate, and Interpret Notational Symbols for Rhythmic and Melodic Patterns Students Listen, Analyze, Compare and Describe Different Forms of Music  Students Critique Their Own Performance and the Performances of Others

Students Identify, Investigate and Interpret Relationships Among the Principles of Music and Other Disciplines. How to learn vocal music ? is Easy to learn.

Students Explore a Variety of Heritages from Music of Many Cultures 

How to Learn Vocal Music is Easy 

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Course Outline 

Primary to the study of vocal techniques are the fundamentals of singing—posture, breath management, vowel production, consonant production, musical line, vocal flexibility and the ability to interpret music with expression and appropriate style. Each student is expected to make progress in each area of the fundamentals of singing through class participation and daily practice. 

Students will learn the physiology of the voice and apply that knowledge to their technical studies. They will study vocal hygiene and professional care of the voice, diction in several languages, and they will be introduced to the International Phonetic Alphabet. Students will apply their music reading and writing skills to the study of voice. 

Students will memorize repertoire in the songs’ original languages, and they will be able to translate and interpret texts and poetry. They will learn and demonstrate appropriate stage presence, poise and discipline. 

Grading and Evaluation Procedures 

Students are graded on class work each advisory and on a jury each emester. Class works includes learning and performing classical vocal literature as ined below. Class grades may also include written work (song translations ,omposer papers, program notes, concert reports, etc.) or any criteria the acherdeems necessary to the development of the student. 

how to learn vocal music - Jury grades are determined yaveraging the grades given by the teacher/evaluators on the faculty jury el. The jury grade counts for 50% of the class grade for advisories 2 and 4. nts who fail the final jury may be asked to transfer from Ellington. Seniors cted to give a senior recital of not more than 20 minutes during their senior year, reflecting the music they have studied while at Ellington. Those who are not able to give a recital must perform a senior jury with the same repertoire criteria. 

All students are expected to treat each other and their teachers with respect and to follow the guidelines given in the Music Department Handbook and the Duke Ellington School of the Arts Community Handbook. 

Vocal students are expected to purchase their own music for vocal classes. Individual teachers will assign books in class. Specific songs are assigned by individual voice teachers, but general guidelines for study are outlined below. 

1st Year Each semester: 2 songs in Italian, 1 Spiritual, 1 English Song 2nd Year Each semester: 1 song in Italian, 1 German, 1 Spiritual, 1 English 3rd Year Each semester: 4 songs in 3 languages Senior Year 4 songs in 3 languages for Senior Hearing, Limit of 20 minutes of music for Senior Recital

Maybe this is all I can say on this occasion, hopefully what we have learned this time about How to Learn Vocal Music Simple & Easy  can be useful for you all, apologize for all mistake and see you again stay at musicsains.blogspot.co.id

windows 7 record audio | How to Record Sound From Computer Windows 7

Windows 7 record audio - How to Record Sound From Computer Windows 7, the discussion that has past, we have tried to learn some very important things. It has to do with how a sound from the surrounding environment that naturally can be used to accelerate plant growth.  And yesterday we were talking about, that many things that need to be studied detail. Among these things are technically how we create a sound file in an audio format that will be used to undertake stimulus to our plant.

How to Record Sound From Computer Windows 7

One of the most basic things for doing this is to get the sound of nature. The sound of birds we have set that will be the object to be used later. We have described how we can obtain this sound. One way is to record the sound of the object. Means, the next step is we will record the sound of birds.windows 7 record audio  Before we go any further to perform these activities. We must know what we have to prepare and how do we do to record the sound of the bird. Here are some things that we have to prepare in advance

windows 7 record audio

1. Objects that we will record the sound (Bird)

2. The tool that we will use to make the recording sound

Let us describe one by one

First we must have an object that we will record his voice. In this case we agreed that we would use the sound of birds, so prepare a bird that can already sounded loud and shrill. Maybe you can buy in pet stores. 

Second, you need to prepare a tool or instrument would you use to record the sound of birds which we prepared earlier. Well, in which case we will use a computer and a device with the type of condenser microphone for recording sound. Why do we use a condenser microphone? This is because the type of microphone that has characteristics that are very sensitive to sound at high frequencies.

How to Record Sound From Computer Windows 7 :

After we prepare all the needs we had. Maybe there among all the readers who do not know, How to record a sound with a computer. Now we will discuss the technical to do it. We can immediately practice with the equipment that we have prepared earlier. We will record the sounds of birds with a microphone and a computer to save the audio file recording. windows 7 record audio

Keep in mind, to help us in the recording. Prepare a condenser microphone small size, you can get at an electronics store. Microphones commonly used by TV news anchor or reporter media. Obviously select the one that has a 3.5 mm jack so you can connect directly to the mic hole on the computer or your note book.

Condenser  Microphone

Next we prepared a notebook computer or a device for recording sound. Please turn on your computer and open the windows program recording, or you can also use another audio program to do this. Here we will use the Windows Sound Recorder for recording sound.

Windows Sound Recorder

The steps to record a sound with computer

1. Connect the mic on the device of your computer, and make sure your microphone to work  normally.
2. Perform a test in advance, if your computer is in a state of setting the right 
3. Perform recording mixer settings on your computer for good results 
4. Put the microphone on the object with the right (not too close and not too far away) 
5. Begin to record and store audio on your computer 
6. Perform the recording several times to a vote where the most good

 After you obtain the recording with good quality, we will continue the next process is to synthesize sound. Means we're doing a synthetic voice to the sound of the birds that we recorded earlier. We will study it at the next opportunity. See you again soon and hopefully useful. windows 7 record audio and How to Record Sound From Computer Windows 7 

Deriving The Wave Equation | Wave Equation In Fluid Dynamics

Deriving The Wave Equation - So far in this book we have dealt with vibrations. These are processes that vary as functions of time.We were able to describe relevant types of vibrations with common differential equations. 

This chapter now focuses on waves, which are processes that vary with both time and space. Their mathematical description requires partial differential equations. Motivated by the electroacoustic analogies, we start this chapter with an excursion into electromagnetic waves. This excursion will bring us back to sound waves in the next section1. Deriving The Wave Equation

Equivalent circuit for a differential section of a homogeneous, lossless electrical transmission line

Figure 7.1 illustrates the equivalent circuit for a elementary section of a homogeneous,

lossless electrical transmission line. For this section, the following loop and node equations hold, 7 The Wave Equation in Fluids

The following two linear differential equations are obtained by neglecting  higher-order differentials, This set of equations shows that a temporal variation of the slope of one of the variables results in a proportional spatial variation of the slope of the other. This causes that the total energy on the line swings between two types  of complementary energies, namely,

Deriving The Wave Equation

• magnetic energy per length, W_ = 1  2L_ i2

• electric energy per length, W_ = 1   2C_ u2

The two linear differential equations (7.3) can be combined into a differential equation of second order, which is

This is the so-called wave equation, here in the formulation for electromagnetic  waves on an electrical transmission line. Hereby c line, el is the propagation speed of electromagnetic waves on the transmission line, namely,

In acoustics we also have waves that propagate along one coordinate, for example, in gas-filled tubes with small diameters compared to wavelength.Such longitudinal compression waves are schematically sketched in Fig

Deriving The Wave Equation, One-dimensional longitudinal acoustic wave. Zones of compression and rarefaction are schematically indicated Two complementary forms of energies are as well required for these types of waves to occur, but in this case we choose energies per volume to be compatible  with the use of p and v as characteristic sound-field quantities. We thus get  7.1 Derivation of the One-Dimensional Wave Equation 89

• potential energy per volume, W__ = 1 2κp2 κ ...volume compressibility
• kinetic energy per volume, W__ = 1 2_ v2 _ ...mass density

Mimicking the wave equation for the electromagnetic waves, we now suggest the following wave equations for one-dimensional acoustic waves,

and the combined second order expression as

with the propagation speed of sound waves to be

The pressing question now is whether these supposed equations, which are  so neatly analogous to electric expressions, are actually in compliance with physical reality. 

The answer is yes, at least approximately. Yet, there are a number of features of the media where sound exists that must be idealized. The following section will elaborate on them. Deriving The Wave Equation

Sourch : Acoustic Engineering Book

How to Perform a Sound Shyntesis To Make Copies of original

How to Perform a Sound Shyntesis To Make Copies of original

How to Perform a Sound Shyntesis To Make
 Copies of original

In the discussion that has been past we have discussed briefly the technical understanding and how to synthesize sound. This problem that takes a long time for lay people to learn, and can to learn this . However, this may only be done if you seriously pay attention and learn what would be discussed at this time. We will discuss in detail the chapter on this one. That is how we create artificial sounds of certain frequencies which will be used to perform the stimulation of the plants that we planted.

Before we start doing the synthesis of sounds, you should be able to know some very important things about the surrounding noise, frequency and  what used to doing it.

Frequency

Frequency is the number of occurrences of a repeating event per unit time. For more details and to find out more about the frequency you can learn here. Most important in the development of this is that you know how much the frequencies that will be used to stimulate our plants. If not clear, you can learn more on our earlier discussion here. Then we take only the frequency of the bird. Bird frequency is the frequency of sound synthesis fitting for us later.

Spectrum analysis.

Before performing sound synthesis process, you also need to know also about the spectrum analysis. Spectrum analysis is a way to determine the value of the frequency of a free sound of the natural surroundings. We do not need to be difficult because now many computer programs that have the ability to perform spectrum analysis on a sound file that we record. Call it Soundfrog. The program can analyze the sound spectrum to generate the data range of the main frequency and its derivatives. You can learn it exclusively here.

Mixing a few sound

If you are able to identify and locate the main and supporting frequency of a sound that we record from the wild. Next we will bring together some of the main frequency and multiple frequency derivative into a new sound. There are many ways you can do to make this work. You can choose yourself which is easiest for you. You can do with audio mixing program or with a mathematical software which is very popular Matlab. But it also seems to me difficult to do, because you also have to learn how to use this program to create a sound file. It will take a very long time.

Apparently so many things we have to learn before doing this job. To be able to absorb all the knowledge that we learn. Perhaps we first end this discussion. We will conduct a detailed discussion of each of these points. For example we will learn how to record the sound of a bird or animal, which we synthesis. Then we will proceed to the next step. See you in the next time.