Audio recording. S kills : microphone position and adjustment C oncepts : clipping, dynamic range, sample frequency and size, amount of data and information captured, fidelity. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. .
Skills: microphone position and adjustment
Concepts: clipping, dynamic range, sample frequency and size, amount of data and information captured, fidelity
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.
Shift to append
Explain your answer using the word “information.”
Explain your answer using the word “bit.”
Like Goldilocks said, just right
The signal is
The signal does not use the full dynamic range
Control panel > Sound > Record > Properties > Levels
Record something with the microphone volume set too highso clipping occurs. What does it sound like?
Record something in which you speak very quietly, then amplify it. How is the sound quality?
Record something at 8,000 Hz – how does the sound quality compare to a 44,100 Hz recording?
If you make a ten second recording at 8,000 Hz with 16 bit samples, how large will the file be?
If you make a 60 minute recording at 44,100 Hz with 32-bit samples, how large will the file be?
We said high fidelity recordings produce large files. What do we do to reduce the size of a file before we distribute it?
Audacity audio recorder and editor:
Audacity audio recorder and editor, portable version:
Audacity "how to" videos:
LAME, an mp3 encoder for Audacity:
FFMpeg, a WMA encoder for Audacity:
Audacity keyboard shortcuts:
Audacity: how-to presentation:
Audacity threaded discussion forum:
Audacity tutorial (on Mac, but good for Windows too):
Neil Young on the need for higher quality music audio:
LAME download manual page:
Home of the LAME project:
Why Mike Cheng started the LAME project:
FFMpeg, a WMA encoder for Audacity (to export .wav files):