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Audio Production This PowerPoint presentation was prepared by David Christensen, Technical Director for Centrum.  www.david-christensen.com  for use class presentations during Centrum’s Blues and Chamber Music workshops in 2007. There are two files…the MHTML file made from PowerPoint, which you of course have found. (Note: Click “slide show” in the lower right for full screen viewing.) There is limited audio in the presentation, so turn up your volume.  There is also a file called  samples of A.wav  If you load this file into any audio editing program (including Audacity a free program you can download) you will see the wave forms for a pure 440 Hz tone (A) and the wave form for the note A from a human voice, a flute, a guitar and a piano.  This helps in understanding harmonics/overtones. The program will suggest when you want to look at this file. I hope you find the program of interest.  I’d love to hear your comments.  David Christensen  [email_address]
Audio Production Basics & Techniques for Demo Recording David Christensen, Technical Director for Centrum www.david-christensen.com Prepared for the 2007 Port Townsend Jazz and Chamber Music Festival
Audio Production Basics Goal:  Make someone's ear drum move.
Side view of an ear drum
Side view of an ear drum
Side view of an ear drum
Creating a wave form Time Frequency Volume
Creating a wave form Time Frequency Volume
Simple wave form – A 440 Time Frequency Volume (click the speaker icon to hear tone)
Audio Production Basics Just what do we hear  and how loud is too loud
What can we hear? ,[object Object],[object Object],[object Object],[object Object]
What can we hear? ,[object Object],[object Object],[object Object],[object Object],[object Object]
What can we hear? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Audio Production Basics How does this relate to what we want to record?
 
So… What is it that creates the Timbre or Uniqueness of a Sound ,[object Object]
So… What is it that creates the Timbre or Uniqueness of a Sound ,[object Object],[object Object]
So… What is it that creates the Timbre or Uniqueness of a Sound ,[object Object],[object Object],[object Object]
Overtone Progression ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Overtone Progression ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Overtone Progression ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Overtone Progression ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Overtone Progression ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Overtone Progression ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
Audio Production Basics What does sound look like?
[object Object]
Audio Production Basics Analog  vs.  Digital No…we are not going to discuss which is better!
Analog vs. Digital Audio ,[object Object],[object Object]
Analog vs. Digital Audio ,[object Object],[object Object],[object Object],[object Object]
Analog vs. Digital Audio ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Analog vs. Digital Audio
[object Object],[object Object],[object Object],[object Object],[object Object],Analog vs. Digital Audio
Digital File Formats ,[object Object],[object Object]
Digital File Formats ,[object Object],[object Object]
Digital File Formats ,[object Object],[object Object]
Digital File Formats ,[object Object],[object Object],[object Object],[object Object],[object Object]
Digital File Formats ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Audio Production Basics What do you need to know about recording digitally?
Ideally ,[object Object]
Ideally ,[object Object],[object Object]
Ideally ,[object Object],[object Object],[object Object]
Audio Production Basics Best ways to record
Record to what? ,[object Object],[object Object],[object Object]
Record to what? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Record to what? ,[object Object],[object Object],[object Object],[object Object]
Audio Production Basics Recording volume level
Set record level so the loudest sounds are down 10dB  from 0
When recording digitally DO NOT allow the volume level to exceed 0dB
Audio Production Basics Once you arrive at a recording level for a piece, do not change it for different movements!
Audio Production Basics Microphones
Audio Production Basics Microphones The Microphone Book John Eargle
Microphones ,[object Object]
Microphones ,[object Object],[object Object],[object Object]
Microphones ,[object Object],[object Object],[object Object],[object Object]
Microphone Characteristics  ,[object Object],[object Object],[object Object],[object Object],[object Object]
Microphone Characteristics  ,[object Object],[object Object],[object Object]
Microphone Characteristics  ,[object Object],[object Object],[object Object],[object Object],[object Object]
Microphone Characteristics  ,[object Object],[object Object],[object Object]
Microphone Characteristics  ,[object Object],[object Object],[object Object],[object Object],[object Object]
Microphone Characteristics  ,[object Object],[object Object],[object Object],[object Object]
Audio Production Basics Mic placement (a good mic in the wrong place sounds like _ _ _ _!)
Mic Placement ,[object Object]
Mic Placement ,[object Object],[object Object]
Mic Placement ,[object Object],[object Object],[object Object]
Mic Placement ,[object Object],[object Object],[object Object],[object Object]
Mic Placement ,[object Object],[object Object],[object Object],[object Object],[object Object]
Audio Production Basics Is Stereo Important?
Audio Production Basics Is Stereo Important? Yes!
Stereo Preception ,[object Object],[object Object]
Stereo Preception ,[object Object],[object Object],[object Object]
Stereo Preception ,[object Object],[object Object],[object Object],Stereo perception for frequencies below 700hz is primarily through time arrival.
Stereo micing for groups ,[object Object]
Stereo micing for groups ,[object Object],[object Object]
Stereo micing for groups ,[object Object],[object Object],[object Object]
Audio Production Basics Post Production  (or OK, it’s recorded…now what?)
Post Production Options ,[object Object]
Post Production Options ,[object Object]
Post Production Options ,[object Object],[object Object]
Post Production Options ,[object Object],[object Object]
Post Production Options ,[object Object],[object Object]
Post Production Options ,[object Object],[object Object],[object Object]
Before Normalizing
Normalized
IMPORTANT Adjust volume equally for all cuts of a classical recording. Normalizing
Track 1  - 6 dB Track 2  - 12 dB Track 3 - 5 dB Track 4 - 4.5 dB  Raise volume of each track 4 dB leaving .5 dB headroom. Normalizing
Audio Production Basics Ways to get your demo  where you want it.
What format for your demo ,[object Object],[object Object]
What format for your demo ,[object Object],[object Object],[object Object]
What format for your demo ,[object Object],[object Object],[object Object],[object Object]
What format for your demo ,[object Object],[object Object],[object Object],[object Object],[object Object]
Preparing your demo disk ,[object Object],[object Object]
Preparing your demo disk ,[object Object],[object Object],[object Object]
Preparing your demo disk ,[object Object],[object Object],[object Object],[object Object]
Preparing your demo disk ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Preparing your demo disk ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Audio Production Basics Questions – Discussion – Experiment?

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Audio Production

  • 1. Audio Production This PowerPoint presentation was prepared by David Christensen, Technical Director for Centrum. www.david-christensen.com for use class presentations during Centrum’s Blues and Chamber Music workshops in 2007. There are two files…the MHTML file made from PowerPoint, which you of course have found. (Note: Click “slide show” in the lower right for full screen viewing.) There is limited audio in the presentation, so turn up your volume. There is also a file called samples of A.wav If you load this file into any audio editing program (including Audacity a free program you can download) you will see the wave forms for a pure 440 Hz tone (A) and the wave form for the note A from a human voice, a flute, a guitar and a piano. This helps in understanding harmonics/overtones. The program will suggest when you want to look at this file. I hope you find the program of interest. I’d love to hear your comments. David Christensen [email_address]
  • 2. Audio Production Basics & Techniques for Demo Recording David Christensen, Technical Director for Centrum www.david-christensen.com Prepared for the 2007 Port Townsend Jazz and Chamber Music Festival
  • 3. Audio Production Basics Goal: Make someone's ear drum move.
  • 4. Side view of an ear drum
  • 5. Side view of an ear drum
  • 6. Side view of an ear drum
  • 7. Creating a wave form Time Frequency Volume
  • 8. Creating a wave form Time Frequency Volume
  • 9. Simple wave form – A 440 Time Frequency Volume (click the speaker icon to hear tone)
  • 10. Audio Production Basics Just what do we hear and how loud is too loud
  • 11.
  • 12.
  • 13.
  • 14. Audio Production Basics How does this relate to what we want to record?
  • 15.  
  • 16.
  • 17.
  • 18.
  • 19.
  • 20.
  • 21.
  • 22.
  • 23.
  • 24.
  • 25.
  • 26.
  • 27.
  • 28. Audio Production Basics What does sound look like?
  • 29.
  • 30. Audio Production Basics Analog vs. Digital No…we are not going to discuss which is better!
  • 31.
  • 32.
  • 33.
  • 34.
  • 35.
  • 36.
  • 37.
  • 38.
  • 39.
  • 40.
  • 41. Audio Production Basics What do you need to know about recording digitally?
  • 42.
  • 43.
  • 44.
  • 45. Audio Production Basics Best ways to record
  • 46.
  • 47.
  • 48.
  • 49. Audio Production Basics Recording volume level
  • 50. Set record level so the loudest sounds are down 10dB from 0
  • 51. When recording digitally DO NOT allow the volume level to exceed 0dB
  • 52. Audio Production Basics Once you arrive at a recording level for a piece, do not change it for different movements!
  • 53. Audio Production Basics Microphones
  • 54. Audio Production Basics Microphones The Microphone Book John Eargle
  • 55.
  • 56.
  • 57.
  • 58.
  • 59.
  • 60.
  • 61.
  • 62.
  • 63.
  • 64. Audio Production Basics Mic placement (a good mic in the wrong place sounds like _ _ _ _!)
  • 65.
  • 66.
  • 67.
  • 68.
  • 69.
  • 70. Audio Production Basics Is Stereo Important?
  • 71. Audio Production Basics Is Stereo Important? Yes!
  • 72.
  • 73.
  • 74.
  • 75.
  • 76.
  • 77.
  • 78. Audio Production Basics Post Production (or OK, it’s recorded…now what?)
  • 79.
  • 80.
  • 81.
  • 82.
  • 83.
  • 84.
  • 87. IMPORTANT Adjust volume equally for all cuts of a classical recording. Normalizing
  • 88. Track 1 - 6 dB Track 2 - 12 dB Track 3 - 5 dB Track 4 - 4.5 dB Raise volume of each track 4 dB leaving .5 dB headroom. Normalizing
  • 89. Audio Production Basics Ways to get your demo where you want it.
  • 90.
  • 91.
  • 92.
  • 93.
  • 94.
  • 95.
  • 96.
  • 97.
  • 98.
  • 99. Audio Production Basics Questions – Discussion – Experiment?