Higher bit depth reduces quantization noise by resolving more amplitude values
Evidence
The bit depth depends on the software; for instance, an 8-bit sample can resolve 256 (28) different amplitude values, and a 16-bit sample can resolve 65,536 (216) values. A high value of bit depth reduces the quantization noise introduced when the approximation between analog value and digitized version is too coarse. — Almo Farina, Soundscape Ecology, 1959
Categorization
- DEFINE: Quantifies bit-depth resolution and the quantization-noise mechanism.
- XREF: connects to: Digital audio capture is governed by sampling rate and bit depth — Almo Farina, Soundscape Ecology: Principles,…, 1948; Quantization noise drops by 6 dB per added bit while hearing spans 130 dB; Quantization always injects noise that lowers audio signal-to-noise ratio — David Howard, Jamie Angus, coustics and Psychoacoustics, 2651 (+1 more)
Broader Connections
- Quantization noise drops by 6 dB per added bit while hearing spans 130 dB
#expands(0.95) - Each added quantization bit yields 6dB SNR improvement
#corroborates(0.95) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 408 - Quantization always injects noise that lowers audio signal-to-noise ratio
#corroborates(0.80) — David Howard, Jamie Angus, coustics and Psychoacoustics, 2651