Before you work with audio, there are some digital audio fundamental terms that you need to understand. These words span from sound waves and frequencies to audio bit depth and sample rate. What is audio bit depth? In this video, join author Cheryl Ottenritter as she shares what audio bit depth is and how it is used in digital audio.
- Okay, so now that we've learned about sample rate…and how sample rate conversion can work,…we're going to jump into the other part of digital audio…that can cause some confusion, and that's bit depth.…It's also called word length…and it's how many bits per word or sample that defines…the resolution of the digital audio, the zeros and the ones.…Quantization, is how these bits are then distributed…among the zeros and ones, the data points.…The higher the bit rate, the more fine the resolution…between the data points, the better the digital reproduction…can actually be.…
It is also very finely in tune with the dynamic range…or the dynamic resolution of the digital audio.…Sample rate is one thing, how many snapshots per second.…But bit depth actually gives you how much resolution…within that sample that you can go.…It relates to dynamic range.…Meaning how softly and how loudly you can reproduce…that digital audio.…And this is very, very important.…
It's more important than people realize because basically…what happens is that we have different ranges for bit rate.…
Author
Released
12/21/2018- Identifying audio frequencies
- How sample rate is used in digital audio
- Using audio meters for a better mix
- Signal flow and gain stages
- Mixing with perceived loudness (LKFS) in mind
- Common audio deliverables
Skill Level Beginner
Duration
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Introduction
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1. Digital Audio Fundamentals
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Identifying frequencies4m 8s
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Understanding sample rate5m 36s
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Audio bit depth5m 51s
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2. Audio Meters: A Visual Tool
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Understanding decibel2m 53s
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What do the colors mean?3m 45s
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3. Perceived Loudness: Mixing with LKFS in Mind
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What is perceived loudness?2m 11s
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4. Signal Flow and Gain Stages
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What is gain vs. volume?4m 8s
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Prefader vs. postfader7m 40s
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5. Sound Field, Track Layouts, and Deliverables
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Common audio track layouts4m 26s
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Conclusion
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Next steps16s
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Video: Audio bit depth