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Concepts

Short, practical explanations of the ideas behind StudioTools — useful on their own, whatever tools you use.

Audio files

PCM, sample rate, bit depth, channels, WAV / AIFF / CAF, chunks.

The bext chunk, the time reference, coding history.

RIFF INFO, AIFF, CAF, ID3 — where metadata lives and how it gets lost.

LUFS, LRA, true peak, EBU R128 and streaming targets.

How StudioTools knows what your DAW is doing.

Coming soon

bext: The Broadcast Wave chunk in a WAV file. More
Bit depth: How precisely each sample is stored (16, 24, 32-bit float). More
Chunk: A labelled block of data inside a WAV, AIFF or CAF file. More
dBFS: Level relative to digital full scale. More
dBTP: True-peak level. More
Dual mono: A stereo file with identical left and right channels. More
EBU R128: European loudness recommendation: −23 LUFS. More
FourCC: The four-character ID of a chunk or metadata field, e.g. IART. More
HUI: A control-surface protocol DAWs use over MIDI. More
iXML: Production sound metadata in WAV files. More
LRA: Loudness range, in LU. More
LUFS / LU: Units of perceived loudness / loudness difference. More
PCM: Uncompressed digital audio. More
RF64 / BW64: WAV variants for files over 4 GB. More
Sample rate: Samples per second, e.g. 48 kHz. More
Time reference: Where a Broadcast Wave file starts on the timeline. More
True peak: The estimated peak between samples. More