In the first lesson about Sound, we learned about what is sound and about the different microphones.

First of all, sound is a longitudinal wave. There are 2 types of wave, transverse and Longitudinal. In a speaker, there is air molecules between the speaker and the receiver. The air molecules vibrates against each other and move back and forth.

Microphones

Dynamic microphones

Dynamic microphones contains a magnet around the microphone with a coil of wire. When someone speak, the diaphragm vibrates which creates a signal . It is suited mostly for handling high volumes.

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Condenser Microphones

Condenser microphones has a stronger audio signal. It is most sensitive to sound.It is usually suited to capture subtle nuances in sound. Although, it is not ideal for high volumes a still makes them prone to distortion.

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Polar Pick Up Patterns

Polar pickup pattern takes a range of where the sound can be picked up from. It can tell us how loud the sound is.

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Types of Pick Up Patterns

Omnidirectional

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This picks up audio equally in all directions. They can be used for choirs, orchestras, debates and anything else that involves recording ambient sound.

Cardioid

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Cardioid polar pattern is like a heart shape. Cardioid polar pick up patterns pick-up sound within 120° of the direction they face. There is very little sound coming from the sides, and barely no sound picked up from behind. These can be used for interviews in crowded areas like karaoke, musicians seeking to record the sound of one instrument.

Hyper Cardioid

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They are slightly narrower than the Cardioid. These picks up sound within 100°. They reject more sound from the sides and picks up little from behind. it has the same uses as the Cardioid but with some background noises for ambience.

Figure of Eight

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It picks up sound from front of microphone and rear, not the side. They can be used in lectures and presentations.

Shotgun

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It picks up sound from anything which is in front but not the sides as much. It can pick up sound from behind,but not as much as in front.

 Foley practical

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foley-sound

In this practical, we had to recreate sounds, using any material we found or any surfaces around the college. The sounds we had to recreate are footsteps, space, human voice, water, the sound of our own choice and rain. We recorded the sound by using a microphone which can adjust the polar pattern.  We had to make sure the microphone was as close as possible to where the Foley sound effect would take place. We used Mono so that it can be heard equally all around, by making sure there is no noise in between the recorded audio to not have any interference.

The footstep was done by me, Lydia and Kyle doing footsteps. The horse hooves sound was done by using the back of the chairs of the media room. The human voice was done by speaking to it, me and Kyle had to say a sentence so that it records our own voice. Space was quite a hard one, but after many thinking, we thought of using the hand dryer by putting our hand under it to sound like a spaceship flying.

I learned that you can make many sounds of the film using the right material. It is very interesting that you can use a variety of materials to create the sound that suits the action being done. I think the sound that worked well was the horse hooves. It sounded like a horse galloping. The running water was like running water itself. We used the water from the tap to create the sound of running water. For the rain, I tapped the plastic frame of a photo using my nails. The sound of my choice was the door squeaking. I did that by moving the door to recreate the sound.

The thing which I would change, the material used when doing a sound effect, because there might be another material used which can work better than what I did. I could also repeat it again to see if it is the same sound as the first time I tried.

Microphones and Pick Up Pattern practical

In this lesson, we had to record using a microphone in 4 different locations, 2 interior locations and 2 outdoors locations. For each recordings, we had to write about what we heard and in which position did the sound came from.

polar-pattern

 Location 1- Drama Hallway

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In this first recorded audio, I heard mostly student chatting on my right side, the volume.

150 Degrees – This time the sound was louder, we can clearly hear the students chatting much clearer than the mono pick up pattern. There was also rattling noises behind, which was a pen drop.

Location 2 – Outside Drama

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Mono – Using the mono, I can mostly hear the generator spinning and a voice at the end.

150 Degrees – In this one, I can also mostly hear the generator, there were a few background noises in between, but that is all I can hear

Location 3 – Front of college

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Mono – I can hear chattering and a background noise of a car.

150 – This time I can hear the engine of the motorbikes more than when it was on Mono

Location 4 – Library

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Mono – I can hear chattering in the background; and some sound of computer tapping the background

150- I can also hear chattering and some background noises

In Location 1, it was not the sound I wanted for 150 degrees because I can hear rattling noises behind which was not meant to be in the recording. In Location 2, the only sound I was meant to hear was the generator. There was no other interference. In location 3, there was the rattling sound which I could closely hear. The noise which I wanted to hear more was the student talking and the engine of the motorbike. So some were the sound I wanted but not all of it. In location 4, the sounds which I heard was  chatting and some tapping noises of the computer in the background which is exactly what I wanted to hear. There was no interference.

REFERENCE:

Harmony Central, No date, Available at: http://www.harmonycentral.com/articles/what-you-need-to-know-about-microphone-polar-patterns, Accessed on 3/10/2016

Harmony Central, No date, Available at: http://www.harmonycentral.com/articles/what-you-need-to-know-about-microphone-polar-patterns, Accessed on 3/10/2016

Harmony Central, No date, Available at: http://www.harmonycentral.com/articles/what-you-need-to-know-about-microphone-polar-patterns, Accessed on 3/10/2016

Lennon Bus, Available at, http://www.lennonbus.org/index.php?/blog/posts/infoblog_-_microphone_pickup_patterns1/, Accessed on 3/10/2016

Lennon Bus, Available at, http://www.lennonbus.org/index.php?/blog/posts/infoblog_-_microphone_pickup_patterns1/, Accessed on 3/10/2016

Media College, No date, Available at: http://www.mediacollege.com/audio/microphones/dynamic.html, Accessed on 3/10/2016

Media College, No Date, Available At:  http://www.mediacollege.com/audio/microphones/condenser.html, Accessed on 3/10/2016

Pattern, No Date, Available At: http://htepattern.net/cardioid-polar-pattern/, Accessed on 3/10/2016

 

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