Have you ever wondered why engineers measure audio levels? Or why they use the dB scale? Or what Leq and Dynamic Scales are?
Audio Levels and Readings offers engineers a basic insight into the world of audio levels and metering and covers many topics, from the basics such as what is an audio signal and how does one measure level, through to more complex issues such as Loudness, A-Weighting and how analog levels relate to digital scales.
Link to DK-Technologies website with download; direct link to PDF.