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Microphones and Mixers

Spencer Fuller Colin Rex and Chase Lefort. Microphones and Mixers. Mixers. What is a mixer? A mixer is a piece of equipment used in the production of audio, by connecting all of the input with the outputs. What are the different sections of a mixer?

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Microphones and Mixers

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  1. Spencer Fuller Colin Rex and Chase Lefort Microphones and Mixers

  2. Mixers • What is a mixer? • A mixer is a piece of equipment used in the production of audio, by connecting all of the input with the outputs. • What are the different sections of a mixer? • There are three sections to a mixer: the patch bay, the output section, and the channel strips.

  3. Patch Bay • The patch bay is the part of the mixer that houses all of the hardware input connections. PATCH BAY

  4. Microphone/Guitar Inputs • Located on the patch bay these inputs are used to record directly from a microphone or electric guitar into the Mackie Mixer

  5. Output Section • The output section is where you control the final mix that comes out of the mixer. OUTPUT SECTION

  6. Specific sections of the Output Section • Headphone & Speaker Volume Knobs- Puts audio into the microphones and monitor speakers • Control Room-designates what audio is sent to the monitor speakers and headphones • Main Mix Volume Fader-This fader controls the overall volume of your mix • Sub-Out Volume Faders-Channels 1 and 2 control how loud the left and right audio channels are going into the computer

  7. Channel Strips • The controls for each of the inputs connected to the mixer are called the channel strip. CHANNEL STRIPS

  8. Specific sections of the Channel Strips • Trim Knob- Controls the upper volume of each channel • Auxiliary Sends- How sound is sent and received • Equalizer Knobs- Manipulates frequencies • Pan- Puts sound in either left or right speaker • Solo & Mute Buttons-Solo makes this the only channel that you are able to hear • Channel Volume Fader- Adjust output volume of each input • Channel Assign Buttons-Designates which output the given input is routed to

  9. Volume • Volume on the mixer is measured in decibels, or dB.  As a dB value decreases, the audio volume goes down. As it increases, the volume gets louder. To take proper care of the mixer, you should avoid pushing the faders past 0dB.

  10. Microphones • What is a microphone? • A microphone is a sensor or transducer that converts sound into an electrical signal. Microphones are used in many everyday applications such as phones, tape recorders, hearing aids, and TV and radio broadcasting. • There are many types of microphones, but the most popular types are dynamic, condenser, ribbon, and USB microphones.

  11. Dynamic Microphone • Dynamic microphones are the most ideal kind of microphone for on-stage performance. These microphones work via electromagnetic induction and are resistant to moisture and relatively inexpensive.

  12. Condenser Microphone • Condenser microphones are used mostly in studios because of their sensitivity to loud sounds and the fact that they're much more fragile than dynamic microphones. You’ll find condenser microphones onstage at live music venues for use as drum overheads or for use in orchestral or choral sound reinforcement.

  13. Ribbon Microphone • In ribbon microphones, a voltage is induced at right angles to both the ribbon velocity and magnetic field direction. As the sound wave causes the ribbon to move, the induced voltage in the ribbon is proportional to the particle velocity in the sound wave.

  14. USB Microphone • In 2005, more affordable USB microphones were introduced, meaning that musicians, vocalists and voiceover professionals could finally record their voice or music with sound quality similar to that of much more expensive sound cards and A/D converters, software, and studio microphones and cables. • The next slide exhibits many styles of USB microphones.

  15. USB Microphone (cont.)

  16. Fiber Optic Microphone • A fiber optic microphone converts acoustic waves into electrical signals by sensing changes in light intensity, instead of sensing changes in capacitance or magnetic fields as with conventional microphones

  17. Microphone and Mixer Video • http://www.youtube.com/watch?v=AIdi0PdG0so • http://www.youtube.com/watch?v=oI6Xh04Sp7o

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