Family S
Synthetic — Classical psychoacoustics
The computer builds the sound from numbers, and what changes between trials is one of those numbers.
Design
- Where the sound comes from
- built by the computer at the moment it is played
- Level policy
- measured against the listener's own quiet threshold, set at the start of the session
- A typical trial
- two or three short sounds differing in one thing
- The question
- how much of this can you hear
- Setup step
- about 90 seconds at the start of every session, and it is required
- Storage
- none. Nothing is uploaded; the sound is made on the device
The experiments
12 implemented experiments using 3 test methods. Each entry gives the session duration and test method.
4ATEST NOISEBAND MASKING Runs in your browser
How loud does a brief beep have to be before it stands out of a noise you are already hearing?
4BTEST GAP ANOMALY Runs in your browser
How deep does a brief dip in a continuous noise have to be before you notice it?
4CTEST CLICK AUDIBILITY Runs in your browser
How quiet can a click get before it disappears into the noise it is buried in?
4DTEST SPECTRAL FLASH Runs in your browser
How big does a brief change in one frequency band have to be before it stands out of the rest?
4ETEST AM FLUTTER Runs in your browser
How deep does a brief wobble in loudness have to be before you catch it?
4FTEST PITCH WOBBLE Runs in your browser
How far does a tone's pitch have to move, briefly, before you notice it moved?
4GTEST STEREO JUMP Runs in your browser
How far does a centred sound have to move, briefly, before you notice the move?
4HTEST PHASE BREAK Runs in your browser
How much do the two ears' signals have to disagree before a centred image comes apart?
4ITEST CODEC BURST Runs in your browser
How much damage does a brief stretch of audio have to take before you hear that it is damaged?
4JTEST REVERB DISTURBANCE Runs in your browser
How much extra reverberation does a space have to gain, briefly, before you notice?
4KTEST TEXTURE ODDBALL Runs in your browser
How much does the grain of a noise have to change, briefly, before you hear the change?
5TEST GAP DETECTION Runs in your browser
How short a silence can you hear inside a noise, and how does that depend on the noise's bandwidth?