Digital Audio Assessment

2.4 Digital and Analogue

✓Apply the file-size formula: bytes = (sample rate × bit depth × channels × duration) ÷ 8
✓Use the ratio shortcut to compare two versions of the same audio file
✓Distinguish between uncompressed, lossless and lossy file formats
✓Locate the ADC in a typical recording signal chain
✓Identify common audio artefacts (mp3 pre-echo, tape hiss, aliasing)